Kozy Heat Nordik 48

It's rated to warm about 1,200–2,400 sq ft. It runs at up to 48,000 BTU/h on either fuel and turns down to 32,000 BTU/h on natural gas or 39,000 on propane. Kozy Heat lists its EnerGuide P.4 efficiency at 74.07% on natural gas and 71.26% on propane.

It's a direct-vent fireplace built for 5 x 8-inch co-axial pipe, and it can be reduced to 4 x 6-5/8-inch pipe with an approved reducer. It vents straight up (3 to 50 feet) or out a wall: With 12 inches of vertical pipe the horizontal run can be up to 24 inches, and the longest setup is 25 feet up plus 25 feet across. The optional Kozy Power Vent (#KPV) is approved for horizontal terminations, and the fireplace can also vent up an existing Class A or masonry chimney with a 4-inch flexible liner.

Yes, as long as the backup batteries are fresh. The control module holds four AA batteries (not included) that keep the burner and flame-height adjustment working when the power goes out, but the fan and lights won't run on battery. For everyday use, the fireplace needs a 120-volt, 6-amp supply that stays live at all times with no switch on it.

It comes with a full-function Proflame 2 remote, and a wall-mount transmitter is an option. The remote can run the fireplace as a room thermostat or in a smart thermostat mode that lowers the flame as the room nears your set temperature. It also controls six flame levels, six fan speeds, the top light's brightness, and the ember-bed light, and it can switch the pilot between on-demand and continuous modes.

Yes, but it's built for natural gas, so propane takes a conversion kit plus a valve stepper motor that's sold separately. On propane the input runs from 48,000 BTU/h down to 39,000 BTU/h, a narrower range than the 32,000 BTU/h low on natural gas. If the fireplace vents out a wall after only 12 inches of rise, or runs on reduced 4 x 6-5/8-inch pipe, the installer also opens the left and right burner air openings to 3/8 inch for propane.

The fan, top light, ember-bed light, and a finishing trim kit come with the fireplace, but a screen front is required and ordered separately. You also choose a log set, with traditional logs listed as the standard media and birch logs as an option. Firebox panels in black glass, black brick, Chicago brick, ledgestone, or herringbone are optional, since the manual treats the panel set as optional.

Yes. The black full rectangle screen front is approved only when the fireplace has the Komfort Zone Kit #KZK-045, a front-plenum kit, and the manual sets the same rule for a non-vented prairie front (NK48-PSF). The vented rectangle and vented prairie fronts and the vintage bronze mission and arched mission fronts work in any install, with or without the kit.

In a standard install, 3/4-inch mantel trim can start 9 inches above the top finishing edge and a 6-inch-deep combustible mantel 12-1/2 inches above it, and the enclosure must be at least 80 inches tall. For a TV, the manual strongly recommends the Komfort Zone Kit, which sends heat out a plenum above the TV and lets a 6-inch mantel sit at the finishing edge, though it raises the minimum enclosure height to 86 inches. A TV recess up to 4-1/4 inches deep is allowed, and the final TV placement rests with the homeowner.

Yes, where local codes allow it. The manual approves it for an aftermarket, permanently located manufactured home (USA only) or mobile home, and it doesn't call for a separate mobile-home kit. The standard floor rule still applies: It sits on wood or a non-combustible surface, or on a metal or wood panel the full width and depth of the unit if the floor is carpet or tile.