AC Repair
Diagnosis and repair for systems that are blowing warm, short-cycling, leaking or refusing to start.
Learn moreComfort
you can
count on
Expert heating and cooling services for homes and businesses across Phoenix and surrounding cities. Dependable solutions, exceptional workmanship, and service you can trust.
- Licensed · Bonded · InsuredYour safety is our priority
- Expert TechniciansTrained on every major brand
- 24/7 ServiceWe are here when you need us
- Satisfaction GuaranteedQuality work, every time
What we do
Heating and cooling work, done properly
Repairs when something fails, replacements when repair stops making sense, and maintenance so neither happens at the worst possible moment.
AC Installation
Right-sized replacement systems, installed with the ductwork, airflow and refrigerant charge verified.
Learn moreFurnace Repair
No-heat calls, short-cycling, ignition faults and blower problems on gas, propane and electric furnaces.
Learn moreHeat Pumps
Air-source and ductless mini-split systems that heat and cool from a single piece of equipment.
Learn moreMaintenance & Tune-Ups
Seasonal inspection and cleaning that catches small faults before they become a no-heat or no-cool call.
Learn moreIndoor Air Quality
Filtration, ventilation and humidity control for homes with dust, allergy or stuffiness problems.
Learn more
About NorthStar HVAC
Residential and light commercial heating, ventilation and air conditioning — repair, replacement and maintenance.
- Diagnosis before parts, priced before the work starts
- Phoenix, AZ
- (602) 203-2395
- northshvac@gmail.com
- Open 24 hours, 7 days a week
Why homeowners call us back
Measured, explained, then fixed
Guesswork is what makes HVAC expensive. Every visit starts with readings, and you see them before you approve anything.
Diagnosis before parts
Readings first — static pressure, temperature split, electrical draw. The measurement decides the repair, so you are not paying for parts that were never the problem.
Options, not pressure
Where there is a repair path and a replacement path, you get both, in writing, with the trade-offs explained. The decision stays yours.
Sized for your home
Replacements start with a load calculation instead of copying the nameplate on the old unit — the single biggest factor in whether a new system actually feels better.
Clean work, documented
Commissioning readings are recorded at start-up so there is proof the system is running to specification when we leave.
Licensed
Licensed contractor
Insured
Liability coverage in force
Bonded
Surety bonded
24/7 emergency service
Someone answers around the clock
8 communities served
Local crews, local drive times
How it works
Four steps, no surprises
From the first call to a working system, here is exactly what happens.
Tell us what is happening
Call or send the form. Describe the symptoms, the equipment and how urgent it is.
Get a scheduled window
You get an appointment window rather than an open-ended wait, and a heads-up before the technician arrives.
Diagnosis and options
The system is measured and tested, then you get the findings and the options — in writing, before work starts.
The work, done properly
Repairs are completed and verified with readings. The work area is left clean.
Reviews
What customers say
Averaging 5 out of 5 across 2 published reviews.
Great HVAC company! Professional, honest, and knowledgeable, with very reasonable pricing. Excellent service. I highly recommend them!
Najibullah NoorGlandale · September 2026Review published on Google — view original Such great service from the most honest technician I’ve ever dealt with! The price was very affordable, and the issue was solved within just a few minutes. Several big-name HVAC companies were unable to fix my AC and instead tried to convince me that I needed a completely new unit. Thankfully, I finally found NORTHSTAR HVAC LLC. They diagnosed and fixed the problem quickly, saved me a couple thousand dollars, and even provided a service warranty. I highly recommend NORTHSTAR HVAC LLC to anyone looking for honest, reliable, and affordable HVAC service!
Yahya NasratPeoria · September 2026Review published on Google — view original
Service areas
Where we work
Local crews mean shorter drive times and same-region parts. If your town is not listed, call (602) 203-2395 — we may still cover you.
Equipment we service
26 brands, six manufacturers
Most badges on a furnace belong to one of six parent companies. Find yours below — if it is not listed, call and ask; the odds are we still carry the parts.
Carrier Brands
Eight badges, one manufacturer — parts and diagnostics carry across all of them.
Carrier
Bryant- Payne
- Heil
Tempstar- Arcoaire
- Comfortmaker
- Day & Night
Next step
Ready to get your system sorted?
Tell us what it is doing and we will tell you what it takes to fix it. No pressure, no jargon.
Open 24 hours, 7 days a week