HVAC Repair in Denver, CO
Fast, experienced & Affordable
Same-Day Service When Available
1 year Guarantee
on Parts
Same-Day When Available
Family Owned
TopServ Appliance & HVAC provides fast, professional HVAC repair across Denver and the surrounding metro area.
We fix central AC systems, furnaces, heat pumps, mini-splits, and commercial HVAC equipment — all brands, all configurations, Same-Day When Available seven days a week.
Open every day, 8 AM to 8 PM.
TopServ Appliance & HVAC provides fast, professional HVAC repair across Denver and the surrounding metro area.
We fix central AC systems, furnaces, heat pumps, mini-splits, and commercial HVAC equipment — all brands, all configurations, Same-Day When Available seven days a week.
Open every day, 8 AM to 8 PM.
1 year Guarantee
on Parts
Same-Day When Available
Family Owned
Why Denver Homeowners Choose TopServ for HVAC Repair?
no hidden fees
applicable manufacturer parts warranty
FREE
Service Call With Repair
Honest Prices, Outstanding Results
Promotion For New Customers
What Denver Homeowners Say About Our HVAC Service
Dimitri and team are outstanding in taking care my appliance. They were prompt, professional, diagnosed the problem quickly and provided the fix in one service call. I was impressed as they communicated all of the steps they performed as they were troubleshooting the problem. I was certain I was going to need a new appliance, but within a short amount of time I was back working again. I will use this TopServ Appliance and HVAC for all of my future needs.
Top notch service. Diagnosed our issue promptly. Vlad, our technician, was super friendly and helpful. Would definitely recommend 👍
Your technician was excellent the diagnostic and fixing the problem. The previous company that was here, stop One, did not know what they are doing. Highly recommend your services.
HVAC Problems We Repair Every Day in Denver
Whatever your system is doing — or not doing — our Denver HVAC technicians have diagnosed and fixed it. Here’s what we handle most often.
HVAC system won't turn on
No response at all when you adjust the thermostat can mean a tripped breaker, a blown fuse, a failed control board, a thermostat fault, or a safety limit switch that's triggered and locked the system out. We trace the fault from the thermostat through the control system to the unit and identify exactly where it's breaking down.
Learn More
AC not cooling
The most common summer call we receive. The unit runs, the fan moves air, but nothing cools down. A refrigerant issue, a failed capacitor, a dirty condenser coil, or a compressor fault can all produce this symptom. We diagnose the specific cause and repair it — not guess and replace components until something works.
Learn More
Weak or uneven airflow
If some rooms are well-conditioned and others are consistently too hot or too cold, the problem is usually a blower motor issue, a dirty air handler, a blocked or disconnected duct run, or an undersized system struggling to keep up. We test airflow at the supply registers and trace the restriction.
Furnace not heating
When your furnace runs but produces no heat — or doesn't run at all — the fault can be in the igniter, the flame sensor, the gas valve, the heat exchanger, or the control board. We test the full heating circuit and fix the specific component that's failed.
Learn More
Strange noises — banging, squealing, rattling, clicking
HVAC systems tell you something specific when they make unusual noises. Banging on startup is often a loose panel or a delayed ignition on a gas furnace. Squealing usually means a worn blower belt or bearing. Rattling points to a loose component or debris in the system. Clicking that doesn't resolve into operation suggests a failed capacitor or contactor. We listen, identify, and fix.
Learn More
Burning or musty smells from the vents
A burning smell on first startup can be normal dust burning off — if it clears within a few minutes. If it persists, or if you smell burning plastic, wiring, or metal, shut the system off and call us. A musty smell indicates biological growth in the ductwork or air handler and needs to be addressed at the source, not masked.
Learn More
System short-cycling — turning on and off frequently
A system that starts and stops every few minutes rather than running full cycles is under significant stress — and is almost certainly not conditioning your home effectively. Oversizing, a refrigerant charge issue, a dirty filter, or a failing thermostat can all cause short cycling. We identify the cause and stop the cycle before it damages the compressor.
Thermostat issues
A thermostat that reads incorrectly, doesn't communicate with the system, or sends constant signals can cause the system to behave erratically. We test thermostat calibration, wiring, and communication and determine whether the thermostat or the system itself is the root cause.
Water leaks from the HVAC system
Water around your air handler or indoor unit usually means a clogged condensate drain line — the most common HVAC service issue we handle. A cracked drain pan, a frozen evaporator coil that's thawing, or an incorrect refrigerant charge can also produce water. We clear the drain, address the cause, and verify correct drainage.
Recognize your problem?
Your HVAC System Might Need Service — Even If It’s Still Running
Not every HVAC problem announces itself with a complete shutdown. These are the signs Denver homeowners most often overlook until the system fails entirely at the worst possible moment.
Your utility bills have increased for no obvious reason
A system losing efficiency — from dirty coils, a low refrigerant charge, a struggling blower motor, or duct leakage — runs longer and works harder to achieve the same result. That shows up on your gas and electric bills before it shows up as a breakdown.
Temperatures feel inconsistent from room to room
If one part of your home is comfortable and another never quite gets there, the system is failing to distribute conditioned air effectively. This is either a duct issue or a capacity issue — both are diagnosable and fixable.
The system runs longer than it used to
If your AC or furnace now runs for 45 minutes to reach a temperature that used to take 20, something has changed in the system’s efficiency. Coil condition, refrigerant charge, and duct integrity are the first things we check.
Indoor air feels stuffy, dusty, or humid
Reduced air quality often tracks directly with HVAC performance. A system that isn’t circulating air effectively, or one with a compromised filter system, lets particles and humidity accumulate that should be managed by the equipment.
The system makes any sound it didn’t make a year ago
HVAC equipment changes its sound profile when something is wearing or failing. New rattles, hums, squeals, or clicks are early mechanical signals — and catching them early is always cheaper than waiting.
It’s been more than a year since the system was serviced
Lack of maintenance is the most common reason HVAC systems fail prematurely. If you can’t recall the last professional service, the system is overdue — and likely operating at reduced efficiency.
HVAC Repair Service Across Denver, CO and the Surrounding Metro Area
Brands We Service
We repair all HVAC brands, including:
Carrier, Goodman, Lennox, Trane, Rheem, York, American Standard, Amana, Bryant, Daikin, Payne, Ruud, and more.
HVAC Repair in Denver — Frequently Asked Questions
Ready to Schedule?
Let’s Get You Fixed Today.
✓ No commitment · ✓ Response within 30 min · ✓ Free estimate
