Forge & Flame Discovery II

Plan on about 1,300–2,550 sq ft, sized to warm the main living area where a family spends the winter. It's the midsize Discovery, with Quadra-Fire's Four-Point Burn System, which burns off gases rising from the wood before they leave the chimney.

Expect approximately 7–10 hours per load from the 1.89 cubic foot firebox, which takes logs up to 16 inches. The Discovery II has a 78% efficiency rating and EPA-certified emissions of 1.9 grams per hour; for longer burns and 18-inch logs, the Discovery III is the next size up.

When you light or reload, you push the ACC knob to open extra start-up air, and the timer closes it on its own after about 20 minutes so the burn settles without you. The separate burn rate control then sets how much air feeds the fire and how much heat you get.

Yes. Each side holds three nominal 12 by 12 inch noncombustible tiles, which must measure 11-11/16 to 11-7/8 inches square and no more than 5/16 inch thick. You can also use the included solid side panels and leave them black or repaint them with 300°F high-temp paint.

No, the fan is sold separately. The optional 160 cfm fan kit runs on 115 volts at 1.2 amps and helps spread warmth through the room. An outside air kit is the other listed add-on.

With vertical double-wall pipe, the Discovery II can sit 6-1/2 inches from the back wall and 13 inches from a side wall; with single-wall pipe those grow to 11-3/4 and 16 inches. It's also listed for an alcove up to 48 inches deep when you use double-wall connector pipe.

In the US, the non-combustible floor protector must reach 16 inches in front of the glass and 8 inches to each side of the loading door, and the brochure lists a 31-5/8 by 39 inch minimum; Canada requires 18 inches in front. If you vent horizontally, it also runs under the flue pipe and 2 inches beyond each side.

Yes, as long as it isn't in a sleeping room. A mobile home install needs the OAK-ACC outside air kit, a #8 copper ground wire to the home's frame, listed double-wall connector pipe with a spark arrestor, and a floor, ceiling and walls that stay structurally intact.