Furnace Repair
Igniters, flame sensors, gas valves, inducer motors, control boards, high-limit switches — full diagnostic and repair.

Furnace, heat pump and gas heating installation and repair for Phoenix Valley winters.
Valley winters aren't Minnesota, but a 38° morning with a broken furnace is still miserable — and dangerous for young children and older adults. Saguaro Mechanical installs, repairs and maintains gas furnaces, electric heat, and heat-pump heating systems across the Phoenix area.
Heating repair is different from cooling repair — combustion, gas pressure, flue draft and carbon-monoxide safety are all on the table. Our technicians are trained and equipped to service every part of a modern gas or electric heating system.
For installations, we size and install high-efficiency furnaces and heat pumps that match your home and your bills — no oversized 100,000-BTU furnace in a 1,500 sq. ft. house.
All gas work is permitted, tested for leaks and combustion, and inspected before we call the job done.
Written scope, fixed pricing, and a real technician on every visit — not a subcontractor you've never met.
Igniters, flame sensors, gas valves, inducer motors, control boards, high-limit switches — full diagnostic and repair.
Reversing valves, defrost boards, auxiliary heat strips — full heat-pump heating diagnostics.
80% and 96% AFUE gas furnaces installed to code with proper venting, gas sizing and combustion-air provisions.
Modern heat pumps deliver efficient heating well below Valley winter lows and double as your summer AC.
CO testing, gas leak testing, heat-exchanger inspection — essential for any older gas furnace.
Annual fall tune-ups so your heat actually works the first cold morning of the year.
Catching these early keeps a $200 repair from becoming a $6,000 replacement. If you're seeing any of these, give us a call.
Real technician callback with an ETA — not a broken 8-hour window.
Combustion, gas pressure, CO reading, electrical — full system check.
Fixed-price repair or replacement quote before work begins.
Most repairs same day; installs scheduled within days, not weeks.
Every gas heating service includes CO testing and combustion analysis. This isn't optional on our jobs.
All new furnace and heat-pump installs are permitted with your city and pass final inspection.
96%+ AFUE gas furnaces and high-HSPF heat pumps can dramatically cut winter utility bills.
Heat pumps pull double duty — heating in winter, cooling in summer, on the same equipment.
For most Valley homes, a heat pump is the better long-term choice: it heats efficiently down through Valley winters and doubles as the summer AC. Gas furnaces make sense in homes with existing gas service and colder winter zip codes.
Any gas furnace 15+ years old should get a professional heat-exchanger inspection and CO test. Cracked heat exchangers can vent CO into the home.
Straight furnace swap is one day. Heat pump install (both indoor and outdoor equipment) is one to two days depending on complexity.
We do — controls, thermostats and breaker-level troubleshooting. For older homes still running electric baseboards, we can also quote heat-pump conversions.
October or early November — before the first cold morning, before the winter service rush.
This service is available in every community we cover — click your area for local details, response times and ZIP-level coverage.