Heat & Glo Cosmo 42 Gas Fireplace

Starting at $3,108

Clean lines and elegant ambiance never go out of style. These horizontal gas fireplaces feature a linear design and long ribbon flame to form a broad and warming firescape. Two sizes and several finishing options create a fundamentally modern look for any space.

  • 25,000 – 26,000 BTUs
  • 42" or 32" viewing area
  • Multiple front and interior finishing choices
  • Reflective black glass liner option

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.

IntelliFire™ Ignition System

IntelliFire™ Ignition System

IntelliFire features intermittent-pilot Ignition (IPI) allowing you to conserve fuel and money when the fireplace is not in use.

Limited Lifetime Warranty

Limited Lifetime Warranty

Our Limited Lifetime Warranty is the strongest and most comprehensive in the industry.

Fireplace Safety

Fireplace Safety

At Heat & Glo, we are committed to your safety. We lead the industry with advanced safety developments.

Heat Management Technology

Heat Management Technology

Heat management technology can redirect up to 50% of the heat to another area, also reducing wall temperatures above the fireplace.

Current Offers

Related Products

Heat & Glo Cosmo 32 Gas Fireplace Heat & Glo Cosmo 32 Gas Fireplace
Heat & Glo Metro 32 Gas Fireplace Heat & Glo Metro 32 Gas Fireplace

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.





Remote control



Battery operated remote control


Two elegant front designs to choose from in truly contemporary style

Cosmo42 Tonic Cosmo42 Tonic
Cosmo42 Martini Cosmo42 Martini


Accent the firebox with contemporary media.

Glass Media, Crystal Glass Media, Crystal
Glass Media, Blue Glass Media, Blue
Glass Media, Amber Glass Media, Amber
Glass Media, Black Glass Media, Black
Glass Media, White Glass Beads Glass Media, White Glass Beads
Glass Media, Black Glass Beads Glass Media, Black Glass Beads
Ceramic Fiber Stones Ceramic Fiber Stones

Interior Panels

Complement your flame with the optional Fade-Resistant Reflective Black Glass that displays exceptional angles of the contemporary ribbon of flame.

Fade-Resistant Reflective Black Glass Fade-Resistant Reflective Black Glass

Heat Management & Venting Technology

Technologies to help you manage heat and fireplace placement in your house.

Heat-Zone® Technology Heat-Zone® Technology
Heat-Zone® Plus Technology Heat-Zone® Plus Technology
Heat Duct Technology Heat Duct Technology
Power Venting Technology Power Venting Technology

Log Set

Optional log set with new burner changes the look to match your decor.

Optional Log Set Optional Log Set

Termination Caps

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

High Wind Vertical Termination Cap High Wind Vertical Termination Cap
Horizontal Termination Cap Horizontal Termination Cap
High-Rise Termination Cap High-Rise Termination Cap
FireBrick Termination Cap for Gas FireBrick Termination Cap for Gas
Decorative Radius Cover Decorative Radius Cover
Safety Shield Safety Shield

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: 48
Framing Front Width: 50
Unit Back Width: 37-3/4
Framing Back Width: 50
Unit Height: 41
Framing Height: 40-1/4
Unit Depth: 18-1/4
Framing Depth: 18-1/4
Glass Size: 39-1/16 x 13-1/4
BTU/Hour Input: 26,000

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.

Product Brochures

Architect Guides

Installation Manuals

Service Parts

CAD Drawings