Why Is My Air Conditioner Not Heating?
Why is your air conditioner not heating? Learn common causes from thermostat settings to reversing valve failure. Compare heat pump vs furnace heating issues for 2026.
Reviews 4.9
(845)
One call solves it all.
We stand behind every repair and installation, ensuring you are happy with the results before we leave.
Our local expertise and commitment to quality have earned us a reputation as a top-rated heating and cooling company.
Heating and cooling issues don't wait for business hours; we are here to help whenever you need us most.
You can trust our trained experts to handle your equipment safely and professionally on every visit.


Our company has operated as a local heating and cooling provider in Largo for more than 17 years. Our crews have served over 12,000 homeowners and business owners facing HVAC issues during that time. Largo HVAC Repair carries a BBB A+ rating backed by hundreds of 5-star reviews. Our technicians identify what failed and why before touching a tool.
Our techs carry deep field knowledge and ongoing training that gets your system fixed right.
We diagnose faults with modern meters and gauges that pinpoint the problem fast.
Simple steps that lower your bills, extend your system life, and keep your home comfortable.
On Energy Bills
with regular maintenance
Replace air filters every 1–3 months to keep your system running efficiently.
Set it to adjust automatically when you’re away or asleep.
Seal windows, doors and ducts to prevent cool air from escaping.
Shade your outdoor unit and windows from direct sunlight to reduce strain.
Ceiling fans help you feel cooler, so you can raise the thermostat and save more.
Routine maintenance keeps your system running at peak efficiency all year long.
Schedule a professional tune-up and keep your HVAC system running efficiently all year long.

Call (727) 614-8917 now and a technician will be on the way before the heat or cold settles in. You get a straight free quote with no charge to come out.
Largo HVAC Repair stands apart from other heating and cooling providers in Largo because every technician trains across all types of HVAC systems. Our customers return because one crew handles the job from diagnosis through final test. With a reputation built on steady local service, we show up when we say we will.
Our friendly team keeps communication clear from the first call through the final check. We explain the problem, answer your questions, and keep you informed about the work. You always know what our technicians are doing and why it matters. Our goal is simple providing reliabl HVAC service that leaves every customer satisfied.
Trusted by homeowners and backed by recognized HVAC service standards.
BBB Accredited Business
ACCA Member Contractor
EPA 608 Certified
RSES Trained Professionals

Reach us at (727) 614-8917 and tell us what your system is doing. We book a visit that fits your schedule, often the same day.
01
Our technician checks the full unit to find the real cause, not just the symptom. We test the parts most crews skip so nothing gets missed.
02
You get the full price and the work plan before anything begins. We answer every question so you know what to expect.
03
Our crew completes the repair and tests the system in front of you. You sign off only once the unit runs the way it should.
04
Plan your HVAC installation, repair, or replacement with confidence. Our experienced team provides accurate project estimates, helping you understand the scope, timeline, and costs for reliable heating and cooling solutions.
We proudly serve the Largo community with reliable HVAC services for homes, apartments, rental properties, and local businesses. Whether you are in West Bay Drive District, near Clearwater-Largo Road District, or living around Largo Mall Activity Center, our technicians are ready to help keep your indoor environment comfortable. We provide air conditioning repair, heating repair, seasonal maintenance, thermostat service, and HVAC system installation, helping Largo property owners maintain reliable indoor comfort throughout the year.
Largo is the third largest city in Pinellas County, Florida, United States, as well as the fourth largest in the Tampa Bay area. As of the 2020 Census, the city had a population of 82,485, up from 77,648 in 2010. Largo was first incorporated in 1905.

Why is your air conditioner not heating? Learn common causes from thermostat settings to reversing valve failure. Compare heat pump vs furnace heating issues for 2026.