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Modern Flames Redstone 42-Inch Built-in Electric Fireplace Insert (RS-4229)

SKU RS-4229

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The Redstone Fireplace Insert Will Exceed the Expectations You Have for Your Living Room

A lot of rooms are already well-designed, but sometimes freshening up its look would be nice, especially when the decors are so old. An easy way to do this would be to enhance the focal point of your space, which is often a fireplace.

However, using traditional or gas fireplaces involves many chores and is difficult to install. If you have an old fireplace or an existing opening, then you're in luck! The Redstone is a modern fireplace insert that has a classic look without the drawbacks of a traditional model.

Featuring Hybrid-FX™ Flame Technology to independently control the flame, ember bed, and downlight colors, thermostat, remote, and timer, this fireplace is perfect for adding style, warmth, and ambiance to any room. This fireplace comes with two trims. Designed for easy installation, just slide it in an existing zero-clearance fireplace, and add the trim for a perfect finish. It can also be installed on any wall with a 10-inch depth. Installing this fireplace can be a DIY job.

Modern Flames' Hybrid-FX™ Flame Technology is a better version of their realistic award-winning flame technology. This new technology allows independent control of the flame and ember bed colors allowing more colors and more vibrant flames. A tall viewing area with a colorful display combined with log and glass media makes this fireplace a stunning wall accent.

Redstone can easily heat up a small room or provide supplementary heat to a large room. At its highest setting, it is capable of producing 5,000 BTUs of heat, which is good enough to heat a room up to 400 square feet. Or, set it to a particular temperature from 68 to 88 °F using the touch control panel or remote included with the fireplace.

Upgrade your existing wood-burning fireplace and experience living in a much more beautiful residential or commercial space. Buy it now and we'll give you free shipping on top of an awesome deal!

This fireplace is also available in other sizes: Modern Flames Redstone Series Collection

What's Included: Electric Fireplace, Remote Control, Glass Media, Log Set, Trim Kits, and User's Manual

Optional Accessories: Cannon Balls

Finish the Look of Your Fireplace with a Mantel:

Click here to see all Fireplace Mantels

Modern Flames Redstone Built-in Electric Fireplace Insert Videos:


  • An electric fireplace is a safer and cleaner alternative to gas fireplaces
  • Can be Built-In or have a Clean Face Installation to fit your decor
  • Emits no heat upwards, so it can be installed beneath a TV
  • No venting requirement makes it easier to install
  • Has 10 Flame Color Options to set the mood
  • Has 10 Ember Bed Color Options for even better aesthetics
  • Hybrid-FX™ flame technology uses high-intensity RGB LED lights and reflection for a realistic flame effect
  • 10 Down Light Color Options beautifully illuminate the logs and crystals
  • Low Energy LED Flame Technology saves electricity
  • Variable Flame and Heat with Thermostat automatically adjusts the heat output according to the room temperature
  • Flame operates with or without the heater to enjoy its beautiful display all year
  • Sleep Timer can be set from 30 mins. to 8 hours, so it shuts off on its own
  • With 2 Heat Settings, 1465 W on High and 750 W on Low setting, to provide better comfort
  • Includes Clear Crystal Media, Log Set, and a Finish Trim Kit
  • Comes with a sleek remote to easily control the fireplace features
  • Touch Button Controls for added accessibility
  • Simplifies installation with easy Do it Yourself Instructions
  • Approximately 40 Decibels
  • Heats 400 sq. ft. with 5000 BTUs
  • Plugs into a standard 120V outlet
  • 120 V
  • Dedicated 15 Amps (or higher) breaker required
  • Dimensions: 27" H x 39 3/4" W x 9 7/8" D
  • Viewing Area: 24" H x 38 1/2" W
  • UL Listed
  • 1-Year Limited Warranty

This fireplace is also available in other sizes: Modern Flames Redstone Series Collection

What's in the Box:

  • Electric Fireplace - 1 pc.
  • Remote Control - 1 pc.
  • Glass Media - 1 bag
  • Log Set - 1 set
  • Trim Kits - 2 sets
  • User's Manual - 1 pc.



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.

In the unlikely event of a problem occurring due to a manufacturing fault within 24 months from the date of purchase of the fireplace, parts will be supplied for repair of the product of the product will be replaced free of charge. Repair or replacement is at the option of Modern Flames. 

Defects must be brought to the attention of Modern Flames Technical Service Department by contacting Modern Flames at 877-268-9353 or 3423 E. Atlanta Ave., Phoenix, AZ 85040. Please have proof of purchase, catalogue/model, and serial numbers available when calling. Limited warranty requires a proof of purchase of the product. 

What this limited warranty does not cover

This limited warranty does not cover consumable items such as the bulbs and the fuses which have a limited lifespan. 

This limited warranty does not apply to products that have been repaired (except by Modern Flames or its authorized service representatives) or otherwise altered. This warranty does further not apply to defects resulting from misuse, abuse, accident, neglect, incorrect installation, water damage, improper maintenance or handling, or operation with an incorrect power source. 

Click Here to Download a PDF Warranty Document.

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