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Furnace repair cost in Dallas Fort Worth averages $288 to about $300, and most jobs fall between $95 and $767. The heat exchanger is the outlier at $1,000 to $3,500, but Carrier and Goodman warranty that part for 20 years and for life on qualifying furnaces, so a covered repair is often mostly labor.

The best air conditioner for garage with no windows, for a space you use often, is a ductless mini split. It pairs an indoor unit with an outdoor unit, so heat leaves through the wall, and the same system heats the garage in winter. Portable units work only when their exhaust is vented outdoors.

Here’s the direct answer: treat a rotten egg smell from your AC as a natural gas leak until a professional proves otherwise. Gas utilities add a sulfur based odorant called mercaptan to naturally odorless natural gas for exactly this reason, so your nose is the alarm system. Leave the house, call 911 and Atmos Energy at 866.322.8667 from outside, and only look at the other three causes after the gas has been ruled out.

Quick answer: Most garages need a mini split between 9,000 and 24,000 BTU. A one-car garage usually lands at 9,000 to 12,000 BTU, a two-car garage at 12,000 to 18,000 BTU, and a three-car garage at 18,000 to 24,000 BTU. In DFW, plan on the higher end of each range because of our heat, weak garage insulation, and west-facing doors. The only way to lock in the exact number is a load calculation done by a licensed pro.