Complete air conditioning services for homes and businesses near you
Full-Service Air Conditioning Services In Longmont, Colorado
At Longmont Heating and Air Pros, we offer complete air conditioning services including installation, repair, and maintenance. Our skilled technicians ensure your system runs efficiently year-round, helping you stay cool while reducing energy costs. Whether you need routine maintenance or a full system upgrade, we deliver reliable solutions tailored to your needs.
Air Conditioning Services in Longmont, Colorado
We are your local Longmont Heating and Air Pros, and cooling is a big part of what we do all summer long. A Front Range summer keeps you honest. The mornings feel mild, then the afternoon sun climbs and the house heats up fast, and that is when your air conditioner has to earn its keep. Whether your system needs a repair, a full replacement, or you are weighing a ductless setup for a room that never stays comfortable, you want a team that knows the local homes and does the work right.
That is exactly what we do. We are the trusted local air conditioning experts in Longmont, and we cover the full range of cooling work under one roof, repair, installation, central air, and ductless mini split systems. We have worked on just about every kind of setup in just about every kind of home around here, from the older places near Old Town to the newer builds spreading east. We diagnose accurately, install carefully, and stand behind what we do.
Whether you are in the heart of Longmont, out in Mead, up the canyon in Lyons, or high in Allenspark, your local HVAC pros you can count on are ready to keep your home cool and comfortable.
Our Air Conditioning Services in Longmont, Colorado
Air Conditioning Repair
When your air conditioner falters in the middle of a warm Longmont stretch, daily life gets uncomfortable fast. Sleep suffers, the house feels stuffy, and the system runs harder while delivering less. A prompt, accurate repair restores that easy comfort you stop thinking about when everything works. Our summers bring strong afternoon sun and real temperature swings, so a system that is even slightly off struggles noticeably, which is why a quick fix that actually addresses the cause matters so much here.
Common Problems We Fix
- The unit runs all day but the house never really cools off
- Warm air drifting from the vents when it should be cold
- Grinding, buzzing, or rattling from the outdoor unit
- Water pooling around the indoor equipment or a clogged drain line
- The system short cycles, kicking on and off every few minutes
- Some rooms stay warm while others cool down just fine
- A spike in energy use with no change to how you run things
- A frozen coil that leaves the system gasping for air
- The AC refusing to start no matter what the thermostat says
When we come out for an AC repair, we work through the system methodically instead of jumping to conclusions. We check refrigerant levels, electrical connections, the compressor, the capacitor, airflow, and the thermostat in a logical order, because a cooling problem often traces back to one small thing throwing the whole system off. We carry common parts so many repairs are finished in a single visit. Once we find and correct the root cause, we test the system to confirm it is cooling properly and running safely, so your Longmont home stays comfortable for the rest of the season rather than facing the same breakdown again next week.
Air Conditioning Installation
A new cooling system is one of the bigger comfort decisions a homeowner makes, and getting the installation right is what determines whether you enjoy it for years or fight with it from day one. Longmont summers are warm and dry with strong sun, and a properly sized, properly installed unit keeps the whole house steady through the hottest weeks instead of leaving you with hot upstairs bedrooms and a cool main floor. The quality of the install matters as much as the equipment itself.
Reasons Homeowners Choose a New System
- An aging unit that keeps needing repairs and cannot keep up anymore
- A system using an outdated refrigerant that has grown costly to service
- Energy use climbing year after year with the same old equipment
- Rooms that never cool down no matter how the system runs
- A home addition the existing system was never sized to handle
- Buying a home with a tired air conditioner near the end of its life
- Noise from a worn-out unit that has become hard to ignore
- Wanting a quieter, more efficient system before the next hot summer
- A complete failure that makes replacement smarter than another repair
The work starts well before anything gets mounted. We size the system to your actual home, looking at square footage, layout, insulation, and how the sun hits the house, because an oversized unit short cycles and an undersized one never catches up. We remove and dispose of the old equipment, prepare the connections, set the new components, handle the refrigerant and electrical work properly, and test the full system to confirm it cools evenly throughout your Longmont home. A clean, correct installation is what delivers years of quiet, efficient comfort rather than a system that disappoints from the start.
Central Air Conditioning Services
Most Longmont homes with ductwork rely on central air to cool the whole house from a single system, so when something goes wrong, every room feels it at once. Whether you need a central system repaired, replaced, or simply running better, getting it right affects the comfort of the entire home for years. We have spent a lot of summers keeping central systems working through the hottest weeks across the area, and we know what these homes need.
Signs Your Central System Needs Attention
- Weak airflow from the vents even with the system running hard
- The whole house cooling unevenly from floor to floor
- The outdoor condenser running but no cool air reaching the rooms
- The system tripping its breaker repeatedly
- Ice building up on the refrigerant lines or indoor coil
- A noticeable jump in energy use during the cooling season
- Short cycling that never lets the house reach temperature
- Strange smells coming through the ductwork when the system runs
- The thermostat reading and the actual room temperature never matching
With central air, the issue can live in the equipment or in the ductwork, so we evaluate the whole system rather than just the unit outside. We check the condenser, compressor, coil, and refrigerant charge, then look at airflow through the ducts, since leaky or undersized ducts can mimic or worsen a failing unit. Because the same blower often serves both heating and cooling, we make sure our work does not overlook something that causes trouble later. After we are done, we verify cooling and airflow in each room and confirm the system runs safely, so your Longmont home gets dependable, whole-house comfort.
Ductless Mini-Split AC Installation and Repair
Ductless mini split systems have become a favorite way to cool the spaces a central system cannot easily reach, additions, finished basements, sunrooms, converted garages, and older Longmont homes that were never built with ductwork. They condition each zone independently, quietly and efficiently, so you control comfort room by room. Whether you are adding a new ductless system or fixing one that has started acting up, this is work that rewards specific knowledge, and we have plenty of it.
Common Problems We Fix
- One zone refuses to cool while the others work fine
- The indoor head dripping water down the wall
- Weak airflow even with the unit set to run hard
- The remote or controls no longer responding to commands
- Ice forming on the indoor or outdoor unit
- A musty odor coming from the wall-mounted head
- The system running but never reaching the set temperature
- Clicking or buzzing from the outdoor compressor
- A unit powering off on its own mid-cycle
For a ductless AC repair, we look closely at the refrigerant lines, the individual zones, the condensate drainage, and the link between the indoor heads and the outdoor unit, since these systems depend on every part staying in sync. A leaking head often points to a clogged condensate line, while a zone that will not cool can mean a refrigerant or control issue. For installation, placement and sizing make all the difference, so we plan each head to cover its space efficiently. Either way, we confirm every zone is cooling and draining properly, so your ductless system delivers quiet, targeted comfort right where you want it in your Longmont home.
Reach out to us for assistance.
Why Longmont Homeowners Choose Longmont Heating and Air Pros
We Handle Every Kind of Cooling Work
Cooling problems do not stick to one type of equipment, and neither do we. Repair, installation, central air, ductless mini splits, we do all of it, which means you have one local team for whatever your home needs rather than juggling different companies. The older homes around Longmont often run systems added onto over the years, the newer ones lean on modern central air, and plenty of additions rely on ductless setups. Having worked across all of these in the area means whatever your situation, we have very likely handled it before.
We Diagnose to the Root Cause
The fastest way to waste money on cooling work is to swap a part and hope. We would rather find out why it failed. When a homeowner near Southmoor Park called us about an air conditioner that kept freezing up, the easy move would have been to thaw it and leave. Instead we traced it to a low refrigerant charge from a slow leak, fixed the leak, and the system has cooled cleanly ever since. That discipline is why our repairs hold and our installs perform the way they should.
We Are Genuinely Local
We are not a regional outfit routing calls in from down I-25. We live and work right here, so when your cooling quits during a hot Longmont afternoon, we are rarely far away, and we know how comfort needs differ between Old Town and the newer subdivisions on the east side. Being your local air conditioning experts in Longmont means familiar, responsive service rather than a crew learning your area on the fly.
We Respect Your Home
Whether it is a quick repair or a full-day installation, we treat your home with care. We lay down protection, wear shoe covers, keep the work area tidy, and clean up completely before we leave, hauling away old equipment so you are not left with it. Homeowners across Longmont notice, and it is one of the reasons so much of our work comes from neighbors who were glad they called and passed our name along.
We Give Honest Guidance
Sometimes a repair is clearly right, and sometimes an aging system has reached the point where a replacement makes better sense. We tell you plainly which situation you are in, without pushing you toward more than you need. That honesty is how we have built our name in Longmont over the years, and it is why homeowners keep calling and keep sending their neighbors our way, season after season.
Our Service Process
1. You Reach Out and We Listen
When you contact us, we ask the right questions to understand what you are dealing with, whether your system has failed, is struggling, or you are planning ahead. That conversation tells us a lot before we even reach your Longmont home, and it helps us arrive prepared with the right approach.
2. We Assess and Diagnose
Our technician inspects your system and your home carefully, whether that means tracking down the root of a repair or properly sizing a new system. We test components in a logical order and explain what we find in plain language, so you understand the situation and your options clearly.
3. We Do the Work Right
Once you understand the situation, we get to work with the proper parts and methods, carrying common components so many jobs are completed in a single visit. Whether it is a repair or an installation, we do it to last through the cooling season and beyond, not just to get you through the afternoon.
4. We Test, Confirm, and Clean Up
Before we leave, we test the system, confirm it is cooling every room evenly and running safely, and make sure the work is truly complete. Then we clean up after ourselves. You are left with a comfortable home and a cooling system you can trust through the hottest weeks of the year.
Service Area in and Around Longmont, Colorado
Longmont is home base for our cooling work, and we cover the entire city, from Old Town and the streets near downtown to Spring Gulch, Southmoor Park, the Prospect neighborhood, and the growing subdivisions on the east side. Wherever you are inside the city, we bring the same expertise to your repair, installation, or ductless project.
We also serve the surrounding communities that share our corner of Colorado. Up in Mead, the fast-growing family town to the northeast, we handle cooling work of all kinds across its newer neighborhoods. Out in Lyons, the foothills town where the St. Vrain Creeks meet, the strong afternoon sun puts real demand on cooling systems, and we know those homes well. And higher up in Allenspark, the mountain village near Rocky Mountain National Park, cooling needs are lighter but far from zero, since the intense high-altitude sun can heat a room fast, and we tailor our approach to how systems behave at elevation. No matter which of these you call home, you get the same local expertise and care.
Reach out to us for assistance.
Professional Air Conditioning Repair vs DIY Attempts
When the cooling goes out on a hot day, it is tempting to grab some tools and try to handle it yourself. For a few basic things that is reasonable, but most air conditioning work is exactly where DIY attempts go sideways, because these systems involve refrigerant under pressure, high-voltage electrical components, and tightly matched parts that have to work together. A mistake in any of those areas can turn a modest job into an expensive one, or create a genuine safety hazard.
Refrigerant is the clearest example. It is not something you can simply top off like oil in a car. Handling it takes proper tools, training, and an understanding of how the system behaves under pressure, and getting it wrong can damage the compressor, the single most expensive part of the unit. Overcharging or undercharging quietly wrecks efficiency and shortens the system’s life. The electrical side carries its own dangers, from capacitors that hold a charge even with the power off to connections that must be made precisely for the system to run safely.
There is also the matter of diagnosis and sizing. A system that will not cool could trace back to a dozen different causes, and choosing or repairing equipment by guesswork burns money fast. Our technicians read the whole system the way you read weather building over the foothills, recognizing the patterns because we have seen them so often in Longmont homes. That experience turns a frustrating afternoon of trial and error into focused work that actually restores your comfort. Simple upkeep like changing the filter and keeping the outdoor unit clear of debris is genuinely yours to handle, but when it comes to real repair or installation, leaning on a professional protects your equipment, your home, and your wallet.
Heating & Air Conditioning Services
Complete Home Comfort Solutions for Your Property
From heating system repairs to air conditioning maintenance and installations, our team has the tools and expertise to keep your home or business comfortable year-round. We deliver reliable, high-quality HVAC service you can count on.
We Deliver Expert Results
Don’t settle for temporary fixes. We combine years of hands-on experience with modern technology to deliver long-lasting heating and cooling solutions. Our team values your time, your comfort, and your property.
- Heating System Repair & Maintenance
- Furnace Repair & Installation
- Air Conditioning Services
- AC Repair & Tune-Ups
- HVAC Diagnostics & System Checks
- Indoor Comfort Solutions
Frequently Asked Questions
Why is my AC running but not cooling the house?
This is one of the most common cooling calls we get in Longmont, and it rarely comes down to one thing. It could be low refrigerant from a leak, a dirty or frozen coil, a failing compressor, a clogged filter strangling airflow, or a thermostat misreading the temperature. When the system runs nonstop without cooling, it is usually fighting something that blocks its ability to move heat out of the house. Rather than guess, we work through the system methodically to find the actual cause, so the fix holds through the rest of the summer.
Should I repair my air conditioner or replace it?
It comes down to the age of the unit, how often it has needed repairs, and how well it still cools. A relatively young system with a straightforward problem is usually worth repairing. The math shifts when an older unit needs a major component like a compressor, or runs an outdated refrigerant that has become costly. At that point, repair money is often better put toward a newer, efficient system. We lay out both paths honestly for your Longmont home so you can decide what fits your situation.
What size air conditioner does my home need?
Proper sizing comes from a real assessment of your home, its square footage, layout, insulation, and sun exposure, not from a rule of thumb or whatever was there before. An oversized unit short cycles and wears itself out, while an undersized one runs constantly and never catches up on a hot day. When we handle an installation in Longmont, we take the time to size the system to your specific home so it runs efficiently and keeps every room comfortable for years.
How long does an air conditioner last in our climate?
A well-installed, well-maintained system in Longmont typically lasts somewhere in the range of twelve to eighteen years. Our summers are warm but not endless, which is easier on equipment than a humid southern climate, though our temperature swings and dusty conditions take their own toll. Regular service pushes that lifespan toward the upper end, while a neglected unit can fail years early.
Why is my air conditioner freezing up?
A frozen coil usually traces back to restricted airflow or a refrigerant problem. A dirty filter, blocked vents, a failing blower, or a low refrigerant charge can all cause the coil to ice over, which chokes the system further. If you see ice, turn the system off to let it thaw and reach out to us. We find and fix the underlying cause rather than just thawing it, because a coil that froze once will freeze again until the real issue is corrected.
Do you install and repair ductless mini split systems?
Yes, both. We handle ductless installation and repair throughout the area, and these systems take specific knowledge to do well. They are a great fit for additions, basements, and older Longmont homes without ductwork. Whether you are adding a new system or fixing a zone that will not cool, we make sure it delivers the quiet, efficient comfort it is designed for.
Can I add central air to a home without ductwork?
Central air relies on ductwork to distribute cooling, so a home without ducts needs another approach. In many cases a ductless mini split is the better path, cooling specific zones efficiently without the cost and disruption of adding ducts. When we assess your Longmont home, we tell you honestly whether central air or a ductless setup is the smarter fit for your layout and goals.
My AC smells bad when it runs. What does that mean?
Odors point to different problems depending on the smell. A musty smell usually means mold or mildew in the system or drain line, often from excess moisture. A burning or electrical smell is more serious and means you should shut the system off and call us promptly. While air conditioners do not involve combustion, if you ever smell gas anywhere in the home, treat it as urgent. If you smell gas or suspect a gas leak, go outside immediately and call 911 – this is a serious emergency that needs urgent attention from the gas company.
How quickly can you come out?
Because we are based right here and work in the area every day, we are rarely far from your door, and we move quickly on cooling failures during hot weather. We aim to reach you the same day or the next for most calls in Longmont. For neighbors in Mead, Lyons, and Allenspark, timing accounts for the drive, but we plan our days to keep you from waiting in the heat any longer than necessary.
Is there a good company near me for air conditioning service in Longmont and nearby towns?
You are looking at it. We are based right here and serve Longmont along with Mead, Lyons, and Allenspark. Being local means faster response, real familiarity with the homes and systems in each community, and a name your neighbors already know. When you want cooling work done by people who actually know the area, we are genuinely close.
How can I avoid AC breakdowns in the first place?
Regular maintenance is the best prevention. Changing your filter on schedule, keeping the outdoor unit clear, and having the system checked each spring before summer all catch small issues before they become breakdowns. Most failures we see during the hottest weeks trace back to something a seasonal tune-up would have caught. A little upkeep goes a long way toward a system that runs reliably through a Longmont summer.
Stay Comfortable All Summer With One Local Team
Cooling your home well comes down to having a team you trust for whatever the season throws at you, a repair, a new system, or a ductless setup for that one room that never cooperates. We have built our name in Longmont by diagnosing accurately, installing carefully, and treating every home with respect, so you get dependable comfort rather than recurring headaches. When you choose us, you are choosing neighbors who know the area and stand behind their work.
The same goes for our neighbors in Mead, Lyons, and Allenspark, who count on us for the full range of cooling service. Whatever your air conditioning needs this summer, your local Longmont Heating and Air Pros are ready to help. When you are ready to get your home comfortable, contact us today.
Zip codes we serve: 80501, 80503, 80504, 80542, 80540, 80510