Chaska 335S

Gas Insert Fireplace by Kozy® Heat Fireplaces

  • Viewing area: 29 3/8” x 15-13/16”
  • Ceramic Glass
  • Millivolt Valve System

The Kozy® Heat Fireplaces Chaska 335S is a high-quality gas insert with a millivolt valve system. It will transform an ineffective wood-burning fireplace into an energy efficient answer to heat your room. It is suitable for locations with an existing masonry fireplace and will revitalize and revamp your room.

Modern Living High Quality Fireplace Gas Insert – Chaska 335S

The Chaska 335S gas insert may be the answer you have been waiting for to modernize your room. It will fit into the frame of your old masonry fireplace to provide a superb heat source and a beautiful addition.

High Efficiency Benefits – Millivolt Gas Insert

The gas insert operates with natural gas at 36,000 BPU/hr input and with LP gas operates at 36,500 BPU/hr input. Natural gas efficiency is 80%, and LP gas is 75%. It provides long term economic benefits that are appealing to any homeowner.

Appealing Features for the 335S Gas Insert

Kozy Heat Fireplaces Inserts are known for superior workmanship and quality. The Chaska 335S operates with an effectively and reliably millivolt valve system, co-linear air kit, and fan kit.

Choose from nine screen front options available in various colors, refractory options, and our choice of a shroud trim.

Once you design your gas insert to match your décor you can relax knowing you have chosen a reliable and well-made gas insert to complete your room. The transformation will beckon you to sit back and enjoy the warmth.


  • Viewing area: 29 3/8” x 15-13/16”
  • 36,000 BTU/hr Input NG
  • 36,500 BTU/hr Input LP
  • Ceramic Glass
  • Fan Kit
  • Co-Linear Air Duct
  • Accepts 3” Combustion Air / 3”
  • Upper Hood & Lower Grill Exhaust
  • Innovative vent connection system
  • High/Low Regulator Speed Control with Receptacle
  • Assembly Log Set Engineer-designed burner system
  • Certified to ANSI Z21.88 Vented Gas Heater
  • MV
    • ENERGUIDE P.4 NG/LP | 65.74% / 66.63%
    • Steady State NG/LP | 80% / 75%
    • AFUE % NG/LP | 73.8% / 76.2%
  • Efficiencies Glossary:
    • P.4 Efficiency (ENERGUIDE) is an efficiency rating more recognized in Canada to measure annual fireplace efficiency.
    • Steady State Efficiency is a measure of how efficiently your fireplace converts fuel to heat once it is warmed up and operating at a steady temperature.
    • Annual Fuel Utilization Efficiency (AFUE) is a measurement of the fireplace's ability to convert fuel to heat over a longer period of time including the cycling on and off time period.
  • Screen Front
    • For options and pictures, look at the Chaska brochure.

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