Mezzo See-Through 48ST

Mezzo See-Through 48ST Description

You’ve never experienced modern design like this. Clean. Discreet. Luxurious. We spared nothing, to give you everything. It’s modern design, redefined.

  • 17,500 – 40,000 BTUs
  • Flames spread across a bed of crushed glass, illuminated by LED underlighting
  • Fade-resistant black glass interior adds depth and intensity to the fire
  • Define your design with 2 sizes and multiple customization options
  • Standard IntelliFire™ Plus RC300 remote control
  • See-through design allows you to enjoy the fireplace from two rooms

Direct Vent Technology

With Direct Vent fireplaces and inserts, 100% of combustion exhaust and fumes are removed from your home. These sealed fireplaces provide optimal heat, conserve energy and ensure clean, safe indoor air quality.

IntelliFire™ Ignition System

The IntelliFire™ Ignition System (IPI) is an advanced intermittent pilot ignition system. IPI constantly monitors ignition, ensures safe functioning and conserves up to $10/month in energy costs. 

IntelliFire™ Plus (IPI Plus) takes this technology to the next level with more safety and memory settings and a programmable wireless remote control.

Fade-Resistant Black Glass Interior

A clean modern look never gets dull. Just like this black glass interior. It's hot. And looks that way, too. For the life of your MEZZO.

Clear LED Lighting Technology

Superior performance and extended efficiency. This technology provides high-contrast, brilliant lighting to accentuate the flames. Can be used as mood lighting, with or without the flames.

Heat Zone Technology

Draw heat from your fireplace to another room in your home, up to 20 feet away. When a heat zone kit is run continuously, it can redirect up to 25% of the heat to another area, thus reducing wall temperatures above the fireplace. Two heat zones run continuously will redirect up to 50% of the total heat output.

Heat Duct Technology

Brings the warmth from your fireplace to the rest of your home, by redistributing heat from the fireplace via the furnace ductwork. When a heat duct is run continuously, it can redirect up to 25% of the heat to another area, thus reducing wall temperatures above the fireplace. Two heat ducts run continuously will redirect up to 50% of the total heat output.

Limited Lifetime Warranty

Own with Confidence 
Our Limited Lifetime Warranty is the strongest and most comprehensive in the industry. It illustrates our commitment to producing the best and most reliable products available—and allows you to own your hearth appliance with confidence. Season after season, year after year.

Be sure to register your warranty to stay up-to-date with any pertinent information from Heat & Glo®. Read more specifics on our Limited Lifetime Warranty here.

Fireplace Safety

Fireplace Safety: Our Commitment, Our Promise 
At Heat & Glo®, we are committed to your safety. For more than 9 years, we have included safety barrier screens as “standard equipment” on all Direct Vent gas fireplaces and inserts. These screens help reduce the chance of a potential serious burn.

We’ve also led the industry with other advanced safety developments—automatic intermittent pilot ignition systems and Direct Vent technology, to name a few.


Unit Front Width62"
Framing Front Width60 1/4"
Unit Back Width62"
Framing Back Width60 1/4"
Unit Height42 1/2"
Framing Height42"
Unit Depth18 1/8"
Framing Depth17"
Glass Size47 1/2 x 12 1/2"
BTU/Hour Input40,000
Estimated Hourly Operating Cost$0.42
Recommended MaintenanceAnnual
Room SizeMedium
Steady State Efficiency58.3%
AFUE Efficiency48.3%
Canada EnerGuide Efficiency51.3%