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Infratech CD Series 39-Inch 4000W/5000W Dual Element Marine Grade Electric Heater


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One of the Best Electric Heaters, Now More Durable Than Ever

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Achieving comfortable outdoor living or entertaining areas in harsher climates can be a challenge.

Not only do you have to deal with cold weather, but most patio heaters, are prone to damage from exposure to moisture and corrosive sea air.

That's where Infratech's CD 39" Dual Element Marine Grade Electric Heater comes in. With its Marine UpGrade 316 Stainless Steel Construction, this heater is certified to keep your outdoor space warm and cozy without worries about corrosion or damage in harsh environments. In addition to a sleek design that tucks away mounting brackets, an optional flush mount frame provides a seamless installation to the ceiling.

Through infrared heat, not even a fraction of the energy goes to waste, as it only warms up solid objects. The 4000 W and 5000 W models provide enough warmth for areas of 8 x 10 ft and 9 x 10 ft, respectively, in areas with mildly cold temperatures. For more information on setup recommendations, see this helpful Infratech Heat Coverage Guide. Note that heaters of more than 240 V are for commercial use only.

Get twice the power of a Single Element Heater from Dual Element Heaters. With a duplex stack switch, it can be set at high/low. Smart home integration is also available.

Bask in the luxurious warmth of one of the best electric patio heaters on the market. It will match any modern setting. Buy now and enjoy free shipping!

This heater is also available in other sizes: Infratech CD Series Collection

Marine Grade Electric Heaters have a lead time of 1 to 2 weeks. Special orders on custom voltages will take 2 to 4 weeks.

Need help determining the right heater and setup for your space and heating needs? Or, do you need more information about the current lead time? Give us a call at (866) 713-2399 or email us at and we'll be happy to help!

What's Included: Electric Patio Heater, Mounting Bracket, and User's Manual

Optional Accessories: Flush Mount KitOther Control Options, and Access Door

Infratech CD Series Marine Grade Electric Patio Heater Videos:


  • Electric Patio Heater for Outdoor or Indoor use
  • Marine Grade Stainless Steel Construction provides extreme durability in harsh climates (e.g. coastal areas)
  • Quartz Element with approximately 5,000 hours of use
  • Wall or Ceiling Mounted at a height of 8 to 12 ft, freeing up floor space
  • May be angled from 0° to 60° to position heat exactly where you want it
  • Inset Brackets are hidden behind the unit for a clean look
  • Can be flush mounted using an optional flush mount kit (sold separately)
  • For Sleep Timer and other control options, get an Analog Controller or a Home Management System for Smart home integration
  • Minimal Maintenance Costs compared to gas
  • Infratech heaters are compatible with top-selling Smart Home systems like Lutron™, Crestron™, and Control 4™ for a completely modern home.
  • Available in 208V, 240V, 277V, or 480V to suit your needs
  • IPX4 Rating certifies protection from mild splashes of water
  • Heaters greater than 240 Volts are for “Commercial Use Only. Risk of fire. Do not use it as a residential or household heater.”
  • Power: 4,000 or 5,000 Watts
  • Average Coverage Area:
    • 4,000 Watt Model: 8' x 10'
    • 5,000 Watt Model: 9' x 10'
  • BTUs:
    • 4,000 Watt Model: 13,648
    • 5,000 Watt Model: 17,060
  • Dimensions: 8 3/16" H x 39" L x 2 1/2" D
  • UL Listed
  • Made in the USA
  • 3-Year Warranty

This heater is also available in other sizes: Infratech CD Series Collection

What's in the Box:

  • Electric Patio Heater - 1 pc.
  • Mounting Bracket - 1 set
  • User's Manual - 1 pc.


Download Product Manual


The best angle to install this heater is approximately 45º. If installed outdoors, it is best to install it at the "cold side" for efficient heating and under a protective roof or weather cover, whenever possible. Even with its all-weather construction, your heater will last longer and look better if it is protected from rain and snow.

Free and Fast Shipping! Read our full Shipping Policy here.

We offer market-leading 30-Day Free Returns! Read more about our Returns Policy here.

INFRATECH warrants that this electric heater is designed and manufactured to be free from defects in materials and workmanship
for a period of TWO YEARS from original date of purchase.

Click to Download Infratech Warranty Document

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