Heatilator Caliber nXt Gas Fireplace

Starting at $3,468

The Caliber nXt provides is one of the most dependable high-efficiency gas fireplaces on the market today. Realistic logs and bold flames fill the large viewing area with a beautiful, roaring fire. This unit includes a standard fan, allowing for even heat distribution.

  • 36" or 42" viewing area
  • Brick interior enhances flames and glowing embers
  • Make it your own with multiple fronts and finishes

Heatilator Caliber nXt Overview

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Key Features and Technologies

Direct Vent Technology

Direct Vent Technology

With Direct Vent Technology, your fireplace can use outside air for combustion, expelling 100% of the combustion exhaust and by-products.

Is This Product Right For You?

Room Size





BTU/Hr Input

20,000 to


Estimated Hourly Operating Cost



Recommended Maintenance






Model Comparison

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Have complete control over your fire. Controls listed are tested and approved for recommended use with the hearth systems indicated.


A variety of available front and operable door options offer a tailored appearance to any hearth. A wide range of color options will complement any home décor.


Our refractory offers an authentic appearance with remarkable brick detail.

Traditional Traditional
Herringbone Herringbone


An impressive selection of designs are available in a variety of material.

Stone Surrounds

Enhance the beauty of a fire with natural stone surround options in marble, granite and slate.

Absolute Black Granite Absolute Black Granite
Beige Marble Beige Marble
Caledonia Granite Caledonia Granite
Green Granite Green Granite
Marron Brown Marble Marron Brown Marble
New Venetian Granite New Venetian Granite
Slate Slate
Tan Brown Granite Tan Brown Granite
Wheatfield Granite Wheatfield Granite

Cast Mantels

Personalize your fireplace with a cast mantel by Fireside Furnishings. Our cast fireplace mantels range from classic to modern designs.


The shelf mantel is available in 48”, 59” or 72” lengths and with designs that accent any room.

Heat Management Technology

Technologies to help you manage the heat throughout your house.

Termination Caps

As the finishing touch, termination cap options are both functional and beautifully designed.

Dimensions in inches. Refer to installation/owner's manual for detailed specifications on installing this product. Hearth & Home Technologies reserves the right to update units periodically. Product installation must adhere strictly to instructions shipped with product.

Model Specifications


Unit Front Width: 41
Framing Front Width: 42
Unit Back Width: 28-1/2
Framing Back Width: 42
Unit Height: 39-7/8
Framing Height: 40-1/8
Unit Depth: 21
Framing Depth: 22
Glass Size: 35 x 24-1/8
BTU/Hour Input: 40,000


Unit Front Width: 48
Framing Front Width: 49
Unit Back Width: 35-1/2
Framing Back Width: 49
Unit Height: 41-7/8
Framing Height: 42-1/8
Unit Depth: 21
Framing Depth: 22
Glass Size: 42 x 26-1/8
BTU/Hour Input: 45,000

Efficiency Chart


Steady State: 78%
AFUE: 65%
Canada EnerGuide: 67%


Steady State: 84%
AFUE: 66%
Canada EnerGuide: 68%

Heat output will vary depending on the type of fuel used. The flame and ember appearance may vary based on the type of fuel burned and the venting configuration used. Actual product appearance, including flame may differ from image shown. Refer to the owner's manual for complete clearance requirements and specifications. Product specifications and pricing subject to change without notice. For testing and listing information please refer to the owner's/installation manual.

*For select products: Heating capacity to be used as a guide only. See your local dealer for help in determining the product that best suits your heating needs based on climate and home efficiency.

†For wood-burning appliances: Actual burn times will vary based on how the appliance is operated, load size, moisture content and type of wood used, and installation.

Sign up to get your personalized coupon for $100 off a fireplace, stove or insert. Offer expires 12/23/2016.

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