{"title":"Radiant Tube Heaters","description":"\u003ch2\u003eHow a Radiant Tube Heater Works\u003c\/h2\u003e\n\u003cp\u003eA gas burner fires down a long steel tube, and a reflector above it aims the infrared energy downward. That energy lands on floors, racking, vehicles and people rather than warming air that would rise straight to the ceiling and stay there. In a building with high ceilings, or a door that keeps opening, that is the difference between heating the space and heating the outdoors.\u003c\/p\u003e\n\u003ch2\u003eStraight tube or U-tube\u003c\/h2\u003e\n\u003cp\u003eA straight run spreads its heat evenly down a long line, which suits an aisle, a row of work benches or a wide patio. A U-tube folds the same burner back on itself, reaching the same output in roughly half the length and concentrating it over a tighter footprint. The deciding factor is usually the clear run you have overhead rather than the output. If you have the ceiling length, the straight tube covers more evenly; if you do not, the U-tube gets the same heat into half the space.\u003c\/p\u003e\n\u003ch2\u003eVented or unvented\u003c\/h2\u003e\n\u003cp\u003eOutdoors and under open cover these run unvented. Indoors you have two options: vent the exhaust through a wall or roof, or run unvented in a space with enough ventilation air. Code sets that minimum at 4 CFM of outdoor air per 1,000 BTU\/hr, so a larger unit run unvented indoors needs real airflow designed in rather than assumed. Settle it with your installer before choosing an output.\u003c\/p\u003e\n\u003ch2\u003eHow these are sized\u003c\/h2\u003e\n\u003cp\u003eRadiant tube heaters are not rated in square feet, and the manufacturers deliberately do not publish a coverage figure. Output is matched to a building with a heat loss calculation alongside the mounting height, because the same heater behaves very differently at 10 feet and at 25. Tell us the building and we can help you work through it.\u003c\/p\u003e\n\u003ch2\u003eWhere to look next\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/collections\/gas-patio-heaters\"\u003eGas Patio Heaters\u003c\/a\u003e covers every gas format including the compact wall and ceiling units that suit a standard patio. \u003ca href=\"\/collections\/infrared-patio-heaters\"\u003eInfrared Patio Heaters\u003c\/a\u003e spans electric as well as gas. \u003ca href=\"\/collections\/patio-heaters\"\u003ePatio Heaters\u003c\/a\u003e is the full category, and \u003ca href=\"\/collections\/patio-heater-accessories\"\u003ePatio Heater Accessories\u003c\/a\u003e carries the mounting kits and controls these units use.\u003c\/p\u003e","products":[{"product_id":"calcana-high-output-stainless-steel-gas-patio-heater","title":"Calcana High Output Commercial and Marine Grade Stainless Steel Gas Patio Heater","description":"\u003ch2\u003eThe Same Heat as a Standard Calcana, in Half the Length\u003c\/h2\u003e\n\u003cimg style=\"float: right;\" alt=\"Calcana Authorized Dealer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/files\/Calcana_Authorized_Dealer_Badge_100x100.png?v=1608274026\" width=\"80\" height=\"80\" data-mce-style=\"float: right;\"\u003e\n\u003cp\u003eCalcana's patented High Output series puts the same BTU output into roughly half the run of their standard heaters. The 5 ft unit delivers 40,000 BTU, which the standard series needs 11.5 ft to produce. The 10 ft unit delivers 75,000 BTU against 21.5 ft on the standard. If you have a short overhead run and real heat to deliver, that is the whole reason this series exists.\u003c\/p\u003e\n\u003cp\u003e\"High Output\" describes density rather than total heat. Both series top out at 75,000 BTU. This one gets there in less space.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCoverage.\u003c\/strong\u003e Calcana rates the 5 ft unit at about 64 sq ft and the 10 ft at about 144 sq ft, for a properly mounted heater in reasonable conditions. Wind will reduce both.\u003c\/p\u003e\n\u003cp\u003eIt mounts overhead or angled off a wall and radiates downward, heating people and surfaces rather than the air. That is what makes infrared work outdoors, where warmed air simply blows away. The burner modulates from 20,000 BTU up to full output, so you are not stuck with one heat level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndoors as well as out.\u003c\/strong\u003e These are certified for outdoor and indoor applications. Outdoors and under open cover they run unvented; for an enclosed space they can be vented through a wall or the roof. Calcana markets the range for mechanical garages, warehouses, greenhouses, car washes and loading docks alongside patios and restaurant terraces. Check the installation manual with your installer for the specific arrangement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTwo stainless grades.\u003c\/strong\u003e Commercial Grade is 304 stainless throughout, which is the full-stainless construction the standard series does not have. Marine Grade steps up to 316 for coastal and saltwater sites where 304 will eventually pit. Choose by site, not by budget: if you can taste salt in the air, take the 316.\u003c\/p\u003e\n\u003cp\u003eWeight is 70 lb for the 5 ft unit and 120 lb for the 10 ft, so plan the mounting structure to suit.\u003c\/p\u003e\n\u003cp\u003eNatural gas or propane, direct spark ignition with no pilot light, CSA approved, 1-year warranty. Made to order, so allow 6 to 7 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Indoor installation requires venting through a wall or roof. See the installation manual.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e Patio Heater, Pre-Assembled Burner Control Housing, and User's Manual\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional Accessories:\u003c\/strong\u003e \u003ca title=\"Overhead Mounting Kits\" href=\"https:\/\/modernblaze.com\/products\/calcana-overhead-mounting-kits\" target=\"_blank\"\u003eOverhead\u003c\/a\u003e and \u003ca title=\"Wall Mounting Kits\" href=\"https:\/\/modernblaze.com\/products\/calcana-wall-mounting-kits\" target=\"_blank\"\u003eWall Mounting Kits\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed help determining the right heater and setup for your space and heating needs? Give us a call at (866) 713-2399 or email us at \u003ca href=\"mailto:support@modernblaze.com\" target=\"_blank\"\u003esupport@modernblaze.com\u003c\/a\u003e and we'll be happy to help.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Calcana","offers":[{"title":"5' Long \/ Natural Gas \/ Commercial Grade","offer_id":32309108965470,"sku":"5122000","price":3227.0,"currency_code":"USD","in_stock":true},{"title":"5' Long \/ Natural Gas \/ Marine Grade","offer_id":32309109031006,"sku":"3162000","price":3736.0,"currency_code":"USD","in_stock":true},{"title":"5' Long \/ Propane \/ Commercial Grade","offer_id":32309108834398,"sku":"5122001","price":3227.0,"currency_code":"USD","in_stock":true},{"title":"5' Long \/ Propane \/ Marine Grade","offer_id":32309108899934,"sku":"3162002","price":3736.0,"currency_code":"USD","in_stock":true},{"title":"10' Long \/ Natural Gas \/ Commercial Grade","offer_id":32309108998238,"sku":"5122004","price":3997.0,"currency_code":"USD","in_stock":true},{"title":"10' Long \/ Natural Gas \/ Marine Grade","offer_id":32309109063774,"sku":"3162004","price":5006.0,"currency_code":"USD","in_stock":true},{"title":"10' Long \/ Propane \/ Commercial Grade","offer_id":32309108867166,"sku":"5122005","price":3997.0,"currency_code":"USD","in_stock":true},{"title":"10' Long \/ Propane \/ Marine Grade","offer_id":32309108932702,"sku":"3162006","price":5006.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/products\/calcana-calcana-high-output-stainless-steel-gas-patio-heater-with-temperature-control-5-long-propane-commercial-grade-14626383298654.jpg?v=1608519701"},{"product_id":"calcana-standard-output-stainless-steel-gas-patio-heater","title":"Calcana Standard Output Stainless Steel Gas Patio Heater","description":"\u003ch2\u003eLong-Run Overhead Infrared, 10 to 20 Feet\u003c\/h2\u003e\n\u003cimg height=\"80\" width=\"80\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/files\/Calcana_Authorized_Dealer_Badge_100x100.png?v=1608274026\" alt=\"Calcana Authorized Dealer\" style=\"float: right;\" data-mce-style=\"float: right;\"\u003e\n\u003cp\u003eCalcana's standard series spreads its heat down a longer run than the \u003ca href=\"https:\/\/modernblaze.com\/products\/calcana-high-output-stainless-steel-gas-patio-heater\"\u003eHigh Output series\u003c\/a\u003e, which is the point rather than a compromise. A long, even band of radiant heat suits an aisle, a walkway or a row of tables better than a short intense one.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThree sizes.\u003c\/strong\u003e The 10 ft unit produces 40,000 BTU and covers about 104 sq ft. The 15 ft produces 50,000 BTU over about 180 sq ft. The 20 ft produces 75,000 BTU over about 312 sq ft. Overall lengths are 11.5, 16.5 and 21.5 ft, so measure the run before choosing.\u003c\/p\u003e\n\u003cp\u003eEach burner modulates rather than running flat out, from a 20,000 BTU minimum on the smallest unit up to full output, so you can dial the heat to the evening.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndoors as well as out.\u003c\/strong\u003e These are certified for outdoor and indoor applications. Outdoors and under open cover they run unvented; enclose the space and they can be vented through a wall or the roof. Calcana markets the range for mechanical garages, warehouses, greenhouses, car washes and loading docks as well as patios and restaurant terraces. Settle the venting arrangement with your installer from the installation manual.\u003c\/p\u003e\n\u003cp\u003eThey are also built for altitude, rated to 2,000 ft in the USA and 4,500 ft in Canada as standard, which matters more than people expect: a heater that fires fine at sea level can underperform badly at elevation.\u003c\/p\u003e\n\u003cp\u003eConstruction is a 304 stainless burner box with aluminum reflectors. If you need stainless throughout, or 316 marine grade for a coastal site, that is the High Output series.\u003c\/p\u003e\n\u003cp\u003eWeights run 70, 95 and 110 lb by length. Natural gas or propane, direct spark ignition with no pilot light, CSA approved, 1-year warranty. Made to order, so allow 6 to 7 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Indoor installation requires venting through a wall or roof. See the installation manual.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e Patio Heater, Pre-Assembled Burner Control Housing, and User's Manual\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional Accessories:\u003c\/strong\u003e \u003ca title=\"Overhead Mounting Kits\" href=\"https:\/\/modernblaze.com\/products\/calcana-overhead-mounting-kits\" target=\"_blank\"\u003eOverhead\u003c\/a\u003e and \u003ca title=\"Wall Mounting Kits\" href=\"https:\/\/modernblaze.com\/products\/calcana-wall-mounting-kits\" target=\"_blank\"\u003eWall Mounting Kits\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed help determining the right heater and setup for your space and heating needs? Give us a call at (866) 713-2399 or email us at \u003ca href=\"mailto:support@modernblaze.com\" target=\"_blank\"\u003esupport@modernblaze.com\u003c\/a\u003e and we'll be happy to help.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Calcana","offers":[{"title":"10' Long \/ Propane","offer_id":32309109096542,"sku":"5260201","price":3227.0,"currency_code":"USD","in_stock":true},{"title":"15' Long \/ Propane","offer_id":32309109129310,"sku":"5260205","price":3530.0,"currency_code":"USD","in_stock":true},{"title":"20' Long \/ Propane","offer_id":32309109162078,"sku":"5260210","price":3899.0,"currency_code":"USD","in_stock":true},{"title":"10' Long \/ Natural Gas","offer_id":32309109194846,"sku":"5260200","price":3227.0,"currency_code":"USD","in_stock":true},{"title":"15' Long \/ Natural Gas","offer_id":32309109227614,"sku":"5260206","price":3530.0,"currency_code":"USD","in_stock":true},{"title":"20' Long \/ Natural Gas","offer_id":32309109260382,"sku":"5260209","price":3899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/products\/calcana-calcana-standard-output-stainless-steel-gas-patio-heater-with-temperature-control-10-long-propane-14626383790174.jpg?v=1608520968"},{"product_id":"ndustria-nhe-indoor-outdoor-infrared-straight-gas-heater","title":"NDUSTRIA™ NHE Indoor\/Outdoor Infrared Straight Gas Heater","description":"\u003ch2\u003eA Radiant Tube Heater for Shops, Warehouses and Covered Patios\u003c\/h2\u003e\n\u003cimg height=\"80\" width=\"80\" style=\"float: right;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/files\/Copy_of_Authorized_Dealer_Badge_73bf205c-2e2a-4d9e-ab4a-18b3e3341c0b.jpg?v=1615253544\" alt=\"Ndustria Authorized Dealer Badge\" data-mce-style=\"float: right;\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/files\/Copy_of_Authorized_Dealer_Badge_73bf205c-2e2a-4d9e-ab4a-18b3e3341c0b.jpg?v=1615253544\"\u003e\n\u003cp\u003eThis is a gas-fired low-intensity infrared tube heater, the same class of equipment used to heat warehouses, manufacturing floors, aircraft hangars and vehicle service centers. Roberts-Gordon builds it. It also works over a covered patio, which is how most people find it.\u003c\/p\u003e\n\u003cp\u003eInfrared heat works differently from a forced-air furnace. Instead of warming the air, which then drifts off or stratifies at the ceiling, the tube radiates directly onto floors, equipment and people. In a building with high ceilings or a door that keeps opening, that is the difference between heating the space and heating the outdoors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSix outputs, 40,000 to 150,000 BTU.\u003c\/strong\u003e The tube length follows the output: 11 ft 6 in at 40,000 BTU up to 41 ft 6 in at 150,000. Recommended mounting height climbs with it, from 8 ft on the smallest to 20 ft on the largest, so the ceiling you have narrows the choice before anything else does.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStraight tube or U-tube.\u003c\/strong\u003e This is the straight version, a single run. If you do not have 20 to 40 ft of clear ceiling to run it along, the \u003ca href=\"https:\/\/modernblaze.com\/products\/ndustria-nhe-indoor-outdoor-infrared-u-tube-gas-heater\"\u003eU-Tube model\u003c\/a\u003e folds the same burner into roughly half the length. Same heat, half the run.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVented or unvented.\u003c\/strong\u003e Outdoors and in open covered areas it runs unvented. Indoors it can be vented through a 4 in flue, or run unvented if the space has enough ventilation air. Code sets that figure: unvented infrared heaters need at least 4 CFM of outdoor air per 1,000 BTU\/hr, so a 100,000 BTU unit needs 400 CFM. Worth settling with your installer before you pick an output.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOn sizing.\u003c\/strong\u003e Roberts-Gordon does not publish a square-foot rating for these, and that is deliberate rather than an omission. Coverage depends on mounting height, ceiling height and how much heat the building loses, so these are sized with a heat loss calculation rather than off a chart. If you tell us the building, we can help you work through it.\u003c\/p\u003e\n\u003cp\u003eRuns on natural gas or propane, fires on direct spark ignition with no standing pilot, and is CSA and ANSI certified. Made in the USA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Covered and walled spaces, temporary or permanent, may need venting installed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e Straight Tube Heater, Reflector, and User's Manual\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo you live in places above 4,000 ft. elevation or need help determining the right heater and setup for your space and heating needs? Give us a call at (866) 713-2399 or email us at \u003ca href=\"mailto:support@modernblaze.com\" target=\"_blank\" data-mce-href=\"mailto:support@modernblaze.com\"\u003esupport@modernblaze.com\u003c\/a\u003e and we'll be happy to help.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Ndustria","offers":[{"title":"Natural Gas \/ 137\" Long (40000 BTU)","offer_id":39261811015774,"sku":"NDHEV.40SHNG","price":2567.35,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 257\" Long (60000 BTU)","offer_id":39261811146846,"sku":"NDHEV.60SHNG","price":3011.48,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 257\" Long (80000 BTU)","offer_id":39261811277918,"sku":"NDHEV.80SHNG","price":2994.83,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 377\" Long (100000 BTU)","offer_id":39261811408990,"sku":"NDHEV.100SHNG","price":3232.28,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 377\" Long (125000 BTU)","offer_id":39261811540062,"sku":"NDHEV.125SHNG","price":3224.9,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 497\" Long (150000 BTU)","offer_id":39261811671134,"sku":"NDHEV.150SHNG","price":3726.92,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 137\" Long (40000 BTU)","offer_id":42779086094430,"sku":"NDHEV.40SHPP","price":2567.35,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 257\" Long (60000 BTU)","offer_id":42779086127198,"sku":"NDHEV.60SHPP","price":3011.48,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 257\" Long (80000 BTU)","offer_id":42779086159966,"sku":"NDHEV.80SHPP","price":2994.83,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 377\" Long (100000 BTU)","offer_id":42779086192734,"sku":"NDHEV.100SHPP","price":3232.28,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 377\" Long (125000 BTU)","offer_id":42779086225502,"sku":"NDHEV.125SHPP","price":3224.9,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 497\" Long (150000 BTU)","offer_id":42779086258270,"sku":"NDHEV.150SHPP","price":3726.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/products\/ndustria-ndustria-nhe-outdoor-infrared-gas-heater-27961256411230.jpg?v=1628727883"},{"product_id":"ndustria-nhe-indoor-outdoor-infrared-u-tube-gas-heater","title":"NDUSTRIA™ NHE Indoor\/Outdoor Infrared U-Tube Gas Heater","description":"\u003ch2\u003eThe Same Output as a Straight Tube, in Half the Length\u003c\/h2\u003e\n\u003cimg height=\"80\" width=\"80\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/files\/Copy_of_Authorized_Dealer_Badge_73bf205c-2e2a-4d9e-ab4a-18b3e3341c0b.jpg?v=1615253544\" alt=\"Ndustria Authorized Dealer Badge\" style=\"float: right;\" data-mce-style=\"float: right;\"\u003e\n\u003cp\u003eThis is a gas-fired low-intensity infrared tube heater with the burner tube folded back on itself. It is the version to buy when the heat you need does not fit the ceiling you have. Roberts-Gordon builds it for warehouses, shops, hangars and vehicle service bays, and it works equally well over a covered patio.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFive outputs, 65,000 to 150,000 BTU, in 13 to 23 ft.\u003c\/strong\u003e Compare that with the \u003ca href=\"https:\/\/modernblaze.com\/products\/ndustria-nhe-indoor-outdoor-infrared-straight-gas-heater\"\u003estraight-tube model\u003c\/a\u003e, which needs 21 to 41 ft for the same range. At 150,000 BTU the straight run is 41 ft 6 in and this one is 23 ft. Nothing is gained or lost in heat output, only in how the run fits your building.\u003c\/p\u003e\n\u003cp\u003eThe trade is real, though. A U-tube concentrates its heat over a shorter footprint, so it warms a tighter area more intensely. A straight tube spreads the same output down a longer line. For a narrow bay or a defined seating area, the U-tube is usually the better shape. For a long aisle or a wide patio, the straight run covers it more evenly.\u003c\/p\u003e\n\u003cp\u003eInfrared heats objects rather than air, which is why it holds up in buildings with high ceilings, frequent door openings, or any space where warmed air would simply escape.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMounting height runs 9 to 20 ft\u003c\/strong\u003e depending on output, so check your clear ceiling height before choosing. Mounted too low and the heat is uncomfortable underneath; too high and it thins out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVented or unvented.\u003c\/strong\u003e Unvented outdoors and in open covered areas. Indoors, either vent it through a 4 in flue or provide ventilation air, which code puts at a minimum of 4 CFM per 1,000 BTU\/hr.\u003c\/p\u003e\n\u003cp\u003eRoberts-Gordon publishes no square-foot coverage figure for these. Sizing is done from the building's heat loss and the mounting height, not from a chart, and we are happy to help you work through it.\u003c\/p\u003e\n\u003cp\u003eNatural gas or propane, direct spark ignition, CSA and ANSI certified. Made in the USA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Covered and walled spaces, temporary or permanent, may need venting installed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e U-Tube Heater, Reflector, and User's Manual\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo you live in places above 4,000 ft. elevation or need help determining the right heater and setup for your space and heating needs? Give us a call at (866) 713-2399 or email us at \u003ca href=\"mailto:support@modernblaze.com\" target=\"_blank\"\u003esupport@modernblaze.com\u003c\/a\u003e and we'll be happy to help.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Ndustria","offers":[{"title":"Natural Gas \/ 156\" Long (60000 BTU)","offer_id":39271806042206,"sku":"NDHEV.60THNG","price":3299.07,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 156\" Long (80000 BTU)","offer_id":39271806107742,"sku":"NDHEV.80THNG","price":3282.42,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 216\" Long (100000 BTU)","offer_id":39271806173278,"sku":"NDHEV.100THNG","price":3615.1,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 216\" Long (125000 BTU)","offer_id":39271806238814,"sku":"NDHEV.125THNG","price":3607.72,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 276\" Long (150000 BTU)","offer_id":39271806304350,"sku":"NDHEV.150THNG","price":4014.5,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 156\" Long (60000 BTU)","offer_id":42779085897822,"sku":"NDHEV.60THPP","price":3299.07,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 156\" Long (80000 BTU)","offer_id":42779085930590,"sku":"NDHEV.80THPP","price":3282.42,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 216\" Long (100000 BTU)","offer_id":42779085963358,"sku":"NDHEV.100THPP","price":3615.1,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 216\" Long (125000 BTU)","offer_id":42779085996126,"sku":"NDHEV.125THPP","price":3607.72,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 276\" Long (150000 BTU)","offer_id":42779086028894,"sku":"NDHEV.150THPP","price":4014.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/products\/ndustria-ndustria-nhe-outdoor-infrared-u-tube-gas-heater-natural-gas-60000-btu-u-tube-heater-27980576817246.jpg?v=1628728603"},{"product_id":"ndustria-nbh-indoor-infrared-straight-gas-heater","title":"NDUSTRIA™ NBH Indoor\/Outdoor Infrared Straight Gas Heater","description":"\u003ch2\u003eEight Output Steps, Mounted as High as 25 Feet\u003c\/h2\u003e\n\u003cimg alt=\"Ndustria Authorized Dealer Badge\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/files\/Copy_of_Authorized_Dealer_Badge_73bf205c-2e2a-4d9e-ab4a-18b3e3341c0b.jpg?v=1615253544\" style=\"float: right;\" width=\"80\" height=\"80\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/files\/Copy_of_Authorized_Dealer_Badge_73bf205c-2e2a-4d9e-ab4a-18b3e3341c0b.jpg?v=1615253544\" data-mce-style=\"float: right;\"\u003e\n\u003cp\u003eA gas-fired low-intensity infrared tube heater from Roberts-Gordon, built for the buildings that are hardest to heat: warehouses, distribution floors, manufacturing space, aircraft hangars, loading docks and vehicle service bays. It also serves a large covered patio well.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEight outputs, 40,000 to 150,000 BTU.\u003c\/strong\u003e That is a finer ladder than most tube heaters offer, and it matters when you are matching output to a building rather than rounding up. The steps run 40, 60, 80, 100, 115, 125, 140 and 150 thousand BTU, in tube lengths from 10 ft 11 in to 40 ft 11 in.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIt mounts higher than the NHE.\u003c\/strong\u003e Recommended mounting height runs from 8 to 10 ft on the smallest unit up to 20 to 25 ft on the largest, against a 20 ft ceiling on the comparable \u003ca href=\"https:\/\/modernblaze.com\/products\/ndustria-nhe-indoor-outdoor-infrared-straight-gas-heater\"\u003eNHE straight tube\u003c\/a\u003e. In a tall warehouse or a hangar, that extra reach is the deciding difference.\u003c\/p\u003e\n\u003cp\u003eInfrared heat radiates onto the floor, the racking and the people, rather than warming air that would rise straight to a 25 ft ceiling and sit there. In a high-bay building that is not a refinement, it is the whole reason this equipment exists.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed the same heat in less length?\u003c\/strong\u003e The \u003ca href=\"https:\/\/modernblaze.com\/products\/ndustria-nbh-indoor-infrared-u-tube-gas-heater\"\u003eU-Tube version\u003c\/a\u003e folds the run roughly in half, 12 ft 6 in to 22 ft 6 in for the same outputs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVented or unvented.\u003c\/strong\u003e Unvented outdoors and under open cover. Indoors, vent it through a 4 in flue or supply ventilation air at the code minimum of 4 CFM per 1,000 BTU\/hr.\u003c\/p\u003e\n\u003cp\u003eRoberts-Gordon publishes no square-foot rating. These are sized by heat loss calculation against your building and mounting height, and we can help you work it through.\u003c\/p\u003e\n\u003cp\u003eNatural gas or propane, direct spark ignition, CSA and ANSI certified, made in the USA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Covered and walled spaces, temporary or permanent, may need venting installed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e Straight Tube Heater, Reflector, and User's Manual\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo you live in places above 4,000 ft. elevation or need help determining the right heater and setup for your space and heating needs? Give us a call at (866) 713-2399 or email us at \u003ca href=\"mailto:support@modernblaze.com\" data-mce-href=\"mailto:support@modernblaze.com\" target=\"_blank\"\u003esupport@modernblaze.com\u003c\/a\u003e and we'll be happy to help.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Ndustria","offers":[{"title":"Natural Gas \/ 131\" Long (40000 BTU)","offer_id":39272275640414,"sku":"NDBH.40SHNG","price":1883.33,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 251\" Long (60000 BTU)","offer_id":39272275673182,"sku":"NDBH.60SHNG","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 251\" Long (80000 BTU)","offer_id":39272275705950,"sku":"NDBH.80SHNG","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 371\" Long (100000 BTU)","offer_id":39272275738718,"sku":"NDBH.100SHNG","price":2481.67,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 371\" Long (115000 BTU)","offer_id":39274884137054,"sku":"NDBH.115SHNG","price":2506.67,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 371\" Long (125000 BTU)","offer_id":39272275771486,"sku":"NDBH.125SHNG","price":2506.67,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 491\" Long (140000 BTU)","offer_id":39274884202590,"sku":"NDBH.140SHNG","price":2878.33,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 491\" Long (150000 BTU)","offer_id":39272275804254,"sku":"NDBH.150SHNG","price":2878.33,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 131\" Long (40000 BTU)","offer_id":42779085635678,"sku":"NDBH.40SHPP","price":1883.33,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 251\" Long (60000 BTU)","offer_id":42779085668446,"sku":"NDBH.60SHPP","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 251\" Long (80000 BTU)","offer_id":42779085701214,"sku":"NDBH.80SHPP","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 371\" Long (100000 BTU)","offer_id":42779085733982,"sku":"NDBH.100SHPP","price":2481.67,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 371\" Long (115000 BTU)","offer_id":42779085766750,"sku":"NDBH.115SHPP","price":2506.67,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 371\" Long (125000 BTU)","offer_id":42779085799518,"sku":"NDBH.125SHPP","price":2506.67,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 491\" Long (140000 BTU)","offer_id":42779085832286,"sku":"NDBH.140SHPP","price":2878.33,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 491\" Long (150000 BTU)","offer_id":42779085865054,"sku":"NDBH.150SHPP","price":2878.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/products\/ndustria-ndustria-nbh-indoor-infrared-straight-gas-heater-27981165953118.jpg?v=1628729149"},{"product_id":"ndustria-nbh-indoor-infrared-u-tube-gas-heater","title":"Ndustria™ NBH Indoor\/Outdoor Infrared U-Tube Gas Heater","description":"\u003ch2\u003eHigh-Bay Heat, Folded into a 22-Foot Run\u003c\/h2\u003e\n\u003cimg alt=\"Ndustria Authorized Dealer Badge\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/files\/Copy_of_Authorized_Dealer_Badge_73bf205c-2e2a-4d9e-ab4a-18b3e3341c0b.jpg?v=1615253544\" width=\"80\" height=\"80\" style=\"float: right;\" data-mce-style=\"float: right;\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/files\/Copy_of_Authorized_Dealer_Badge_73bf205c-2e2a-4d9e-ab4a-18b3e3341c0b.jpg?v=1615253544\"\u003e\n\u003cp\u003eA gas-fired low-intensity infrared tube heater with the burner tube folded back on itself, from Roberts-Gordon. Same equipment class that heats warehouses, manufacturing floors, hangars and service bays, in a shape that fits a shorter building.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSeven outputs, 60,000 to 150,000 BTU, in 12 ft 6 in to 22 ft 6 in.\u003c\/strong\u003e The \u003ca href=\"https:\/\/modernblaze.com\/products\/ndustria-nbh-indoor-infrared-straight-gas-heater\"\u003estraight-tube version\u003c\/a\u003e needs 20 to 41 ft for the same outputs. If your clear run is short but your heat demand is not, this is the answer.\u003c\/p\u003e\n\u003cp\u003eOne correction worth making, because our own copy used to get this wrong: the U-tube does not produce more heat than the straight tube. Both reach 150,000 BTU. The U-tube reaches it in roughly half the length, and concentrates that heat over a tighter footprint. That is the actual difference.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMounting height runs 10 to 12 ft on the smallest up to 20 to 25 ft on the largest.\u003c\/strong\u003e These are built for tall buildings, and infrared is why: it radiates onto the floor and the equipment instead of warming air that would collect uselessly at a 25 ft ceiling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVented or unvented.\u003c\/strong\u003e Unvented outdoors and under open cover. Indoors, vent through a 4 in flue or provide ventilation air, which code sets at a minimum of 4 CFM per 1,000 BTU\/hr. A 150,000 BTU unit run unvented indoors needs 600 CFM, which is a real design decision rather than a footnote.\u003c\/p\u003e\n\u003cp\u003eNo square-foot rating is published for these. Roberts-Gordon sizes them from building heat loss and mounting height, and so do we. Tell us the building and we will help.\u003c\/p\u003e\n\u003cp\u003eNatural gas or propane, direct spark ignition, CSA and ANSI certified, made in the USA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Covered and walled spaces, temporary or permanent, may need venting installed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e U-Tube Heater, Reflector, and User's Manual\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo you live in places above 4,000 ft. elevation or need help determining the right heater and setup for your space and heating needs? Give us a call at (866) 713-2399 or email us at \u003ca href=\"mailto:support@modernblaze.com\" target=\"_blank\" data-mce-href=\"mailto:support@modernblaze.com\"\u003esupport@modernblaze.com\u003c\/a\u003e and we'll be happy to \u003c\/strong\u003e\u003c\/p\u003e","brand":"Ndustria","offers":[{"title":"Natural Gas \/ 150\" Long (60000 BTU)","offer_id":39272278032478,"sku":"NDBH.60THNG","price":2537.58,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 150\" Long (80000 BTU)","offer_id":39272278065246,"sku":"NDBH.80THNG","price":2537.58,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 210\" Long (100000 BTU)","offer_id":39272278098014,"sku":"NDBH.100THNG","price":2864.48,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 210\" Long (115000 BTU)","offer_id":39275997691998,"sku":"NDBH.115THNG","price":2889.48,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 210\" Long (125000 BTU)","offer_id":39272278130782,"sku":"NDBH.125THNG","price":2889.48,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 270\" Long (140000 BTU)","offer_id":39275998281822,"sku":"NDBH.140THNG","price":3165.92,"currency_code":"USD","in_stock":true},{"title":"Natural Gas \/ 270\" Long (150000 BTU)","offer_id":39272278163550,"sku":"NDBH.150THNG","price":3165.92,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 150\" Long (60000 BTU)","offer_id":42779085373534,"sku":"NDBH.60THPP","price":2537.58,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 150\" Long (80000 BTU)","offer_id":42779085406302,"sku":"NDBH.80THPP","price":2537.58,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 210\" Long (100000 BTU)","offer_id":42779085439070,"sku":"NDBH.100THPP","price":2864.48,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 210\" Long (115000 BTU)","offer_id":42779085471838,"sku":"NDBH.115THPP","price":2889.48,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 210\" Long (125000 BTU)","offer_id":42779085504606,"sku":"NDBH.125THPP","price":2889.48,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 270\" Long (140000 BTU)","offer_id":42779085537374,"sku":"NDBH.140THPP","price":3165.92,"currency_code":"USD","in_stock":true},{"title":"Liquid Propane \/ 270\" Long (150000 BTU)","offer_id":42779085570142,"sku":"NDBH.150THPP","price":3165.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/5357\/products\/ndustria-ndustria-nbh-indoor-outdoor-infrared-u-tube-gas-heater-28358820298846.jpg?v=1628729683"}],"url":"https:\/\/modernblaze.com\/collections\/radiant-tube-heaters.oembed","provider":"Modern Blaze","version":"1.0","type":"link"}