Compared across 4 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The Mr. Heater Big Maxx is a natural gas unit heater for garages, workshops and small commercial spaces, rated at 200,000 BTU and intended for roughly 670 square feet. It hangs from the ceiling and needs a gas line, venting and typically a 120V power source, so it is an installed appliance rather than a plug-in space heater. It is built for hard-wired, permanent heat in spaces that are not part of the main house. The best new price is $1,738.99 at Blain's Farm & Fleet as of November 8, 2026, with four stores listing it new.
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Lowest price we've seen: $1,738.99 on Nov 8 at Blain's Farm & Fleet. Tracked across 4 stores since Nov 8.
Owner feedback on the Big Maxx line centers on strong heat output and a straightforward ceiling install once gas and venting are in place. Complaints tend to involve installation cost and noise from the burner and fan.
