Kozy Heat Chaska 34 Glass

It's sized for roughly 850–1,700 sq ft. Kozy Heat's brochure rates the Chaska 34 at 34,000 BTU/h maximum and 18,500 minimum on both natural gas and propane. Its EnerGuide P.4 efficiency is listed at 73.22% on natural gas and 76.49% on propane.

It needs an opening at least 23-1/2 inches high, 33-1/2 inches wide at the front, 24-1/2 inches wide at the back, and 16-3/8 inches deep. It goes into an existing wood-burning masonry or factory-built fireplace, and its chimney must be at least 7 inches inside (factory-built) or 6 x 8 inches (masonry). If your fireplace is narrower, the Chaska 29 and Chaska 25 need smaller openings.

It vents straight up the existing chimney through dual 3-inch aluminum flexible liners, one for exhaust and one for outside combustion air, so the system is sealed from the room. The brochure lists vertical termination only, with a vent run of 10 to 50 feet. Approved systems include Kozy Heat #816, Simpson Dura-Vent, Selkirk Metalbestos, Ameri-Vent, and ICC.

Plan on a screen front, a shroud, and glass media—the brochure lists the front and the media as required and says the shroud is required for installation. Media choices are 1/2-inch crushed glass in reflective midnight or reflective copper, or crystal kits in seabreeze, black, amber, or glacier, with an optional beach accent kit. Shrouds come in black at 27 x 40, 30 x 44, or 33 x 46 inches, or as a blank shroud, and black enamel panels, an accent light, the fan, and the remote come standard.

Mostly, yes. It uses Kozy Heat's electronic ignition system, and the Chaska 34 manual says the burner can light and run on a backup pack of four AA batteries when the power is out. The fan and the accent light don't run on battery power, so they stop until power returns.

The included Komfort Kontrol remote turns the fire on and off and adjusts the flame height, the fan speed, and the light kit. It also has a thermostat function and lets you switch from intermittent ignition to a continuous pilot. A Sit Proflame wall-mount transmitter is available as an option.

Yes. The brochure rates the Chaska 34 at the same 34,000 BTU/h maximum and 18,500 minimum on propane as on natural gas. The Chaska 34 manual says the insert is manufactured for natural gas and converts with a kit sold separately, and the option list includes a propane valve step motor for this model.

A 9-inch-deep combustible mantel needs 16 inches above the top of the insert, and it can get 1 inch deeper for every added inch of height. The low mantel kit, which fits only the rectangular or prairie screen front, lets a 6-inch mantel start 11 inches above the top, or a 9-inch mantel at 14 inches. Combustible side walls need 6 inches, and the ceiling must be at least 55 inches above the fireplace enclosure floor. Neither the manual nor the brochure gives a separate TV rule, so plan any TV around these clearances with your installer.

The Chaska 34 manual says yes to both. It may be installed in a bedroom, and in an aftermarket, permanently located manufactured home (USA only) or mobile home where local codes don't prohibit it. It still has to go into an existing wood-burning fireplace and chimney that meet the size requirements.