Serving Longmont, CO & Surrounding Areas (970) 602-4958
(970) 602-4958

HVAC Denver, CO

#1 Rated HVAC Repair in Denver, CO

Professional AC repair, heating installation, and full HVAC service for local homes, businesses, and the surrounding neighborhoods.

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HVAC technicians serving Denver

Experienced HVAC Pros You Can Count On

Local HVAC systems work hard. Seasonal extremes, daily cycling, and airborne dust all shorten equipment life. Longmont HVAC understands these challenges and provides responsive heating and cooling service tailored to this community.

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Expert Heating & Cooling Solutions for Denver

For Denver residents, Longmont HVAC is the way around every bad HVAC experience you've heard about: the vague quotes, the mystery invoices, the replacement pitch for a system that needed a $40 part. We do it differently. You talk to a real person, a technician shows up on time, the diagnosis is explained clearly, and the price is agreed before any work begins. From emergency repairs to planned upgrades, all handled by seasoned technicians who know the area.

Heating and Air Conditioning Service Across Denver

We service every type of heating and cooling equipment you'll find in local homes and businesses, from central air conditioners and gas furnaces to heat pumps and ductless mini-splits. It doesn't matter whether the building is a starter home, a townhome, or a storefront. Our technicians understand the local weather, the age and construction of local homes, and the code requirements that apply to new installations, and that knowledge shows up in every diagnosis.

Most homeowners we meet need one of three things: a repair, a replacement, or regular maintenance. Repairs are usually straightforward: a burned contactor, a dirty flame sensor, a slow refrigerant leak, or a worn-out blower motor. When we replace a system, it gets a proper load calculation, not a guess based on the old unit's tonnage, which keeps temperatures even and stops the new equipment from short-cycling itself to an early death. Maintenance visits include coil cleaning, a refrigerant charge check, safety control testing, and a static pressure reading, which does more than anything else to extend equipment life.

Local businesses receive the same attention. An overheated storefront or a freezing office drives customers and staff away, so our commercial crews focus on fast diagnosis and keep common parts on board for rooftop units, split systems, and ventilation equipment. Property managers, restaurant owners, and retailers can ask us to work around their operating hours whenever possible.

Fast HVAC Response in Denver

When your system quits, how quickly help arrives matters more than anything else. For that reason, we keep our schedule flexible across the area and answer every call with a live person. Emergency calls typically see a technician within a day, and we treat a failed furnace in a cold snap or a dead AC in the heat ahead of routine work.

Here's what we see most often when something breaks at home: warm air from the AC, a condenser that hums but won't start, a furnace that lights for a few seconds and quits, a breaker that trips every time the system kicks on, an evaporator coil that has iced over, a condensate drain backed up into the furnace cabinet, or a thermostat that has quit. Nearly all of these trace back to a part we already carry: capacitors, contactors, igniters, flame sensors, universal control boards, and standard fittings. You get the price before any work starts, with no surprises on the invoice.

Two situations call for a quick step from you before our technician gets there. The first is an iced-over air conditioner: switch the system off at the thermostat and set the fan to "on" so the moving air thaws the coil, because continuing to run it can flood the drain pan and damage the compressor. The second is a furnace that short-cycles or produces a burning smell. Turn it off at the service switch and call us. Those few minutes can prevent a much larger repair.

How Denver Homeowners Can Extend HVAC Life

A little routine care is the difference between a system that runs for years and one that breaks down in the middle of the season. Our advice for homeowners is a short list: a new filter every one to three months, at least two feet of open space around the outdoor condenser, a gentle rinse each spring for the condenser coil, and a professional tune-up every spring and fall, so problems are found while they're still inexpensive.

The age of your equipment matters just as much. With regular service, a central air conditioner typically lasts 12 to 15 years, a furnace 15 to 20, and a heat pump 10 to 15. Once a system passes that range and starts acting up, like rising energy bills, rooms that never reach the setpoint, or one repair after another, it's time to plan a replacement. Replacing on your own schedule costs less and is far less stressful than an emergency swap during the first heat wave of summer.

Minor issues don't stay minor when they're ignored. Take a weak capacitor: swapping it out is a quick, affordable repair, but left alone for a season, it can burn out the compressor, and just like that a minor fix becomes a full system replacement. That's why we ask homeowners to save our number in their phone and reach out at the first sign of trouble. Catching it early saves time and money and spares you a few miserable nights.

Common HVAC Problems in Denver

HVAC systems in this area face a familiar set of problems. Hard-running summers push compressors and capacitors to their limits, and humidity and airborne grit slowly foul outdoor condenser coils, cutting efficiency years before the equipment should show its age. Dirty filters quietly starve systems of airflow, freezing evaporator coils in summer and overheating furnace heat exchangers in winter, damage that builds slowly and out of sight.

We also see the full range of component failures in local homes: weak capacitors that leave the condenser humming without starting, contactors with pitted points, cracked igniters and dirty flame sensors that lock furnaces out on cold mornings, refrigerant leaks that turn into long lukewarm afternoons, and blower motors worn down by years of restricted airflow. The area's older housing stock adds its own layer, undersized returns, leaky or crushed ductwork, and additions that no duct run ever reached.

Every one of these problems is fixable, and most are much less expensive when caught early. If your system is doing anything unusual, strange noises, weak airflow, rooms that won't hold temperature, bills creeping upward, a quick diagnostic visit from our team catches the small problem before it becomes an expensive one. Give us a call at (970) 602-4958 to set up a visit.

Trusted Local Service

We know this area inside and out, including the climate patterns and housing stock that affect local comfort systems. From iced-over coils to furnaces flashing error codes, our technicians are equipped to handle it all.

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Heating & Cooling Services We Provide

From single-family homes to commercial properties, our team covers every comfort need in the area, including:

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The Reason Denver Keeps Calling Us

Longmont HVAC treats this community like home turf, because it is. We show up when we say we will, we diagnose before we quote, and we put real numbers on both repair and replacement so you can decide with facts instead of pressure. Our technicians are seasoned on everything from 20-year-old furnaces to inverter heat pumps, our trucks carry the parts that actually fail, and our work is checked in every mode before we go. It's the reason so much of our local work comes from referrals.

Your HVAC Questions Answered

The brand rarely matters to us. Our technicians regularly service Carrier, Trane, Lennox, Rheem, Goodman, York, and the other major names you'll find around here. On the ductless side, we see plenty of Mitsubishi, Fujitsu, and LG. Most repairs use universal parts that ride on the truck, and brand-specific components are quick to source when a repair calls for them.
First, rule out the easy stuff. Confirm the thermostat is in cooling mode and the batteries aren't dead, replace the filter if it's dirty, and look at the breakers for the indoor and outdoor units. Ice on the copper lines or an outdoor unit that hums without running means it's time to shut the system off, because continuing to run it risks damaging the compressor. Call us at (970) 602-4958 and we'll send a technician your way without delay.
There isn't one magic number, but a few rules of thumb help. Most component failures on systems under about 10 years old are worth the repair. Past the 15-year mark, or after a compressor or heat exchanger failure at any age, replacing the system usually makes better financial sense, especially with the efficiency gains newer equipment offers. We'll show you both numbers up front and let you decide, because we'd rather earn your trust than sell you a system you don't need yet.
Most calls get a same-day appointment, and a home with no heat or no cooling gets priority over routine work. When you reach us at (970) 602-4958, you'll get a straight arrival window, and because the technician arrives with capacitors, contactors, igniters, and motors already on board, most repairs wrap up in one trip.
Yes. Our seasonal tune-ups clean coils and burners, verify refrigerant charge and combustion, test capacitors and safety controls, and check airflow end to end, with cooling in spring and heating in fall. It's the most reliable way to extend equipment life and avoid a breakdown in the middle of a heat wave or cold snap, and it often pays for itself in energy savings over time.
It depends on the job. Repairs usually come in between $150 and $650, depending on the failed part and the type of system. A complete system replacement generally costs about $5,000 to $12,000 installed, depending on size and efficiency rating. Before any work starts, we provide a written quote based on the diagnostic, and that number doesn't change.
Absolutely. Mini-splits are ideal for additions, garages, sunrooms, and older homes that never had ductwork. We size each zone to the room it serves, position the indoor and outdoor units carefully, and handle the line set, condensate drainage, and electrical connections correctly. If central equipment serves you better, we'll tell you that too.
Yes. We repair every major brand of air conditioners, furnaces, heat pumps, and ductless mini-splits. When a system is beyond saving, we handle the complete replacement: hauling away the old equipment, putting in a correctly sized new system, and testing everything in every mode. You get a clear quote for each option before deciding.

Also Serving Nearby Communities

Beyond this community, we cover the surrounding towns with the same fast service.

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