What Should I Do If My Heater Is Not Working in My House?

Start with a few quick checks, then schedule a technician. Clark Heating & Cooling repairs furnaces and heat pumps in Phoenix and nearby cities. Repairs include a 1-year parts and labor warranty (freon excluded). Our diagnostic is $55 on weekdays or $89 on weekends, waived if a repair is done at the visit.

• Set thermostat to Heat; raise 3–5°F; replace batteries.
• Check the breaker and furnace switch.
• Replace a clogged air filter.
• For heat pumps, clear debris from the outdoor unit.
• Smell gas? Leave the home and call your utility.

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Updated: 2025-12-13 00:00:00

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Need help in Glendale, AZ? Call (602) 793-2477 or book online.

"Clark responded to my residence same day I called them." — Jon W.