Top 10 Gas Furnace Repair in Phoenix, AZ
The best gas furnace repair services in Phoenix, AZ for 2026 include Desert Diamond Air Cooling & Heating (4.9), Parker & Sons (4.7), Day & Night Air Conditioning, Heating, & Plumbing (4.9). All diagnose and repair gas furnaces same-day with upfront pricing.
Parker & Sons
Day & Night Air Conditioning, Heating, & Plumbing
Rite Way Heating, Cooling & Plumbing: Phoenix
Goettl Air Conditioning and Plumbing - Phoenix AZ
APES HVAC & Plumbing
Desert Diamond Air Cooling & Heating
1st Choice Plumbing, Air & Insulation
Penguin Air, Plumbing & Electrical
Scottsdale Air Heating & Cooling
Same Day Air Repair
How We Ranked These Phoenix Pros
Our rankings are based on a weighted evaluation of five key factors:
- Licensing & Insurance — All listed businesses hold active state licenses verified through official databases.
- Customer Reviews — We aggregate ratings from Google, Yelp, and the BBB, weighting recency and review volume.
- Response Time — Companies offering same-day or 24/7 emergency service score higher.
- Pricing Transparency — Businesses who offer flat-rate pricing or free estimates rank above those with opaque billing.
- Experience & Longevity — Years serving the Phoenix market and breadth of services factor into overall reliability.
Rankings are reviewed quarterly. Have a correction? Contact us.
Frequently Asked Questions
How much does gas furnace repair cost in Phoenix?
Gas furnace repair in Phoenix costs $100-$400 for common issues (ignitor, thermocouple, blower motor). Heat exchanger replacement costs $500-$1,500. Diagnostic fee is $75-$150, usually applied to repair.
Why is my gas furnace not heating?
Common causes: dirty filter restricting airflow, faulty ignitor or pilot light, bad thermostat, tripped safety switch, or gas supply issue. Check the filter and thermostat first — these fix 30% of no-heat calls.
Is a cracked heat exchanger dangerous?
Yes — a cracked heat exchanger can leak carbon monoxide into your home. If diagnosed, shut off the furnace immediately. Replacement costs $500-$1,500 but if the furnace is 15+ years old, full replacement is usually more cost-effective.