How much does furnace repair cost in Phoenix?

Minor repairs like igniter or thermostat replacement often run $150-$400. Bigger fixes, such as a heat exchanger or blower motor, can run $500-$1,500 depending on the part and labor involved. Get a written diagnostic fee upfront since many companies apply it toward the repair if you move forward.

How often should a furnace be serviced?

Once a year, ideally in early fall before the first cold snap. An annual tune-up catches worn igniters, dirty flame sensors, and early signs of heat exchanger cracks before they turn into a no-heat call in December.

How long does a furnace replacement take?

A standard swap-out with no ductwork changes usually takes a single day, sometimes finishing in 4-6 hours. If ducts need resizing or the unit is being converted from gas to electric or vice versa, expect it to stretch into a second day.

How do I judge the quality of a heating contractor?

Look past the star rating to what reviews actually describe: did they show up when scheduled, explain the diagnosis in plain terms, and stand behind the work with a labor warranty. A contractor who pulls permits for replacements and performs a load calculation instead of guessing at unit size is generally doing the job right.

Heating & Furnace Services in Phoenix, Arizona

Phoenix winters are short, but they're not nothing. Overnight lows in the 40s (and colder snaps into the 30s) are enough to run a furnace or heat pump hard for a few months, and a system that sat idle since March doesn't always fire up clean. This category covers the contractors who install, repair, and maintain the heating side of a home's HVAC system: gas furnaces, electric furnaces, heat pumps, and the ductwork and thermostats that tie them together. We've listed 269 businesses doing this work across the Valley, from small owner-operator crews to larger multi-crew outfits.

What this work covers

Typical jobs include furnace or heat pump repair, annual tune-ups and safety inspections (checking heat exchangers for cracks, testing gas pressure, verifying carbon monoxide levels), full system replacement, and duct sealing or repair when heated air isn't reaching rooms evenly. Because most Phoenix homes run a combined heating and cooling system, a lot of these contractors also handle AC work, so you'll often see overlap with the broader HVAC category.

What to look for before you hire

A current Arizona contractor's license (ROC) and proof of liability insurance
Clear, written estimates that specify equipment brand, model, and BTU/tonnage, not just a lump-sum price
Manufacturer certifications (Trane, Carrier, Lennox, Goodman, etc.) if you're leaning toward a specific brand
A real answer on permit pulling for full replacements, since Phoenix and most surrounding cities require one
Willingness to explain load calculations rather than just swapping in a same-size unit

How we score contractors here

Our ranking weighs verified licensing, review volume and sentiment over time, responsiveness, and how consistently a company shows up for both small repairs and bigger installs, not just one or the other. See the ranked list of heating and furnace contractors in Phoenix for the full breakdown, or read our methodology for exactly how scores are calculated.

Read the ranked guide: Best heating & furnace services in Phoenix View on map →

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All heating & furnace services, ranked by score and relevance

We found 269 businesses offering heating & furnace services; 189 met the criteria for the scored directory. The order weighs each business's overall score by how much of its reviewed work is heating & furnace services, so a lower-scored specialist can rank above a higher-scored generalist. Filter and sort below, or open the full map view.

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When you submit a quote or contact form, your enquiry may be shared with partner providers who can do the work. We may receive a referral fee, but our rankings and scores are based only on our published scoring method and are never affected by referral payments.

Common questions about heating & furnace services

How much does furnace repair cost in Phoenix?: Minor repairs like igniter or thermostat replacement often run $150-$400. Bigger fixes, such as a heat exchanger or blower motor, can run $500-$1,500 depending on the part and labor involved. Get a written diagnostic fee upfront since many companies apply it toward the repair if you move forward.
How often should a furnace be serviced?: Once a year, ideally in early fall before the first cold snap. An annual tune-up catches worn igniters, dirty flame sensors, and early signs of heat exchanger cracks before they turn into a no-heat call in December.
How long does a furnace replacement take?: A standard swap-out with no ductwork changes usually takes a single day, sometimes finishing in 4-6 hours. If ducts need resizing or the unit is being converted from gas to electric or vice versa, expect it to stretch into a second day.
How do I judge the quality of a heating contractor?: Look past the star rating to what reviews actually describe: did they show up when scheduled, explain the diagnosis in plain terms, and stand behind the work with a labor warranty. A contractor who pulls permits for replacements and performs a load calculation instead of guessing at unit size is generally doing the job right.

Guides to choosing heating & furnace services

Furnace and heating repair costs in Phoenix: what changes the price
Typical furnace and heat pump repair prices in Phoenix, why heating equipment ages differently here, and what actually drives the cost up or down.