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We’re not a big faceless franchise—we’re your local Heating and Air Pros team serving Longmont, Colorado. We understand the unique challenges homeowners face, from heating system issues to air conditioning breakdowns. Whether you need a routine inspection, emergency repair, or a full system upgrade, you can count on experienced professionals who stand behind their work.
Longmont Heating and Air Pros: Your Local HVAC Experts in Longmont, Colorado
We are your local Longmont Heating and Air Pros, and we have spent years keeping homes comfortable through every kind of weather this part of Colorado throws at us. If you have lived here a while, you already know the routine. A January cold snap rolls down off the foothills and your furnace suddenly matters more than anything else in the house. Then July arrives and the afternoon sun bakes the Front Range until your air conditioning becomes the only thing standing between you and a miserable night. We built this company around those realities, not around a brochure.
When folks search for HVAC in Longmont, they are usually not in the mood for a sales pitch. They want someone who picks up the phone, shows up when promised, and fixes the problem the first time. That is exactly what we do. We handle AC repair and AC installation, heating services of every kind, furnace repair and furnace installation, boiler repair and boiler installation, ductless mini split work, and emergency HVAC repair when something fails at the worst possible moment.
What sets us apart is that we actually understand Longmont homes. We have worked on the older places near Old Town, the newer builds out toward the eastern edge of the city, and everything in between. We know how these houses are heated, where the airflow tends to bottleneck, and what tends to wear out first. That local knowledge saves you time and money, and it means we rarely have to guess.
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Our Heating and Air Conditioning Services in Longmont
Air Conditioning Repair and Installation
Summers along the Front Range can fool you. Mornings feel mild, then the afternoon heat builds fast and your home turns into an oven if the cooling system is not pulling its weight. A reliable air conditioner is not a luxury in Longmont, it is what keeps your family resting easy through the warm stretch from late spring into early fall. When your system struggles, you notice quickly, and so do we.
Common Problems We Fix
- The unit runs all day but the house never really gets cool
- Warm air blowing from the vents when cold air should be coming through
- Strange grinding, buzzing, or rattling sounds from the outdoor condenser
- Water pooling around the indoor unit or a clogged drain line
- The system short cycles, kicking on and off every few minutes
- Some rooms stay cold while others never cool down at all
- A spike in your energy use with no change in how you run the system
- A frozen coil that leaves the whole system gasping
- The AC simply will not start no matter what you do at the thermostat
When we arrive for an AC repair, we start by checking refrigerant levels, electrical connections, the compressor, and airflow, because a cooling problem often traces back to something small that has knocked the whole system out of balance. For AC installation, we size the equipment to your actual home rather than dropping in whatever is biggest. A right-sized system in Longmont runs more efficiently, lasts longer, and keeps every room comfortable instead of just the one nearest the thermostat. That careful approach is the difference between a unit you forget about and one you fight with every July.
Furnace Repair and Installation
Heat is not optional in this town. When the temperature drops and the wind comes barreling off the mountains, a healthy furnace is the heart of a comfortable home. Most Longmont homeowners do not think about their furnace until the morning it refuses to fire up, and by then the house is already getting cold. We would rather catch trouble early, but we are also here the moment things go wrong.
Common Problems We Fix
- The furnace turns on but the air coming out feels lukewarm at best
- Loud banging or popping right when the system starts up
- The blower runs constantly and never seems to shut off
- A burning or musty smell every time the heat kicks in
- The pilot light or igniter keeps failing to stay lit
- Rooms heat unevenly, leaving cold pockets through the house
- The thermostat says one thing but the house feels like another
- Higher heating bills with no clear reason behind them
- The unit cycles on and off far more than it should
Our furnace repair work begins with a real diagnosis. We inspect the heat exchanger, burners, igniter, blower motor, and safety controls so we understand the root of the problem before we touch a single part. When it is time for furnace installation, we walk you through your options and match a system to the size and layout of your home. A properly installed furnace heats your Longmont home evenly, runs quietly, and gives you years of dependable warmth instead of one stressful winter after another.
Boiler Repair and Installation
Plenty of Longmont homes, especially some of the established ones around the center of town, rely on boilers and radiant or baseboard heat. There is a lot to love about that kind of warmth, steady and comfortable without the dry air that forced systems sometimes bring. But a boiler is its own animal, and it takes someone who actually understands hydronic heating to keep it running right. That is where we come in.
Common Problems We Fix
- Radiators or baseboards that stay cold even when the boiler is running
- Strange knocking or gurgling sounds in the pipes
- Pressure that drops too low or climbs too high on the gauge
- Leaks around valves, fittings, or the boiler itself
- The system takes forever to bring the house up to temperature
- The pilot or ignition will not stay lit through a heating cycle
- Uneven heat from one room or one floor to the next
- Rising fuel use that points to a system losing efficiency
- The boiler shuts down on its own and trips a safety lockout
Boiler trouble is rarely as simple as it looks, so our boiler repair process means checking pressure, circulation, the expansion tank, and the controls together rather than chasing one symptom at a time. For boiler installation, we take the time to balance the system across your whole house so every room gets its fair share of heat. Done well, a boiler is one of the most comfortable and long-lasting ways to heat a home in Longmont, and we make sure yours lives up to that promise.
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Quality Services
Heating Services
A dependable heating system is essential for keeping your home or business warm and comfortable during colder months. From consistent heat to energy efficiency, every component plays a key role in maintaining a safe and cozy environment.
Furnace Repair
A faulty furnace can quickly leave your home or workplace feeling cold and uncomfortable. Whether it’s no heat, unusual noises, or inconsistent temperatures, even small issues can signal bigger problems. That’s why we respond quickly to diagnose and restore your system.
Furnace Installation
Installing a new furnace is one of the best ways to improve comfort and energy efficiency. Whether you are replacing an outdated system or installing a new unit, the right setup ensures reliable performance and long-term savings.
Boiler Services
Boilers provide consistent and efficient heating for many homes and businesses. Whether you need repair, maintenance, or a full replacement, keeping your boiler system in top condition is essential for reliable warmth and performance.
Air Conditioning Services
A reliable air conditioning system is essential for maintaining comfort in your home or business. From consistent cooling to improved energy efficiency, every component plays a key role in keeping your space comfortable year-round.
AC Repair
A malfunctioning air conditioner can quickly make your home or workplace uncomfortable. Whether it’s warm air, strange noises, or weak airflow, even small issues can lead to bigger problems. That’s why we respond quickly to diagnose and restore your system.
AC Installation
Installing a new air conditioning system is one of the best ways to improve comfort and energy efficiency. Whether you are replacing an outdated unit or setting up a new system, choosing the right AC can make a big difference in performance and long-term savings.
Ductless AC
Ductless mini-split systems offer flexible and energy-efficient cooling without the need for traditional ductwork. They are ideal for homes, additions, or specific rooms where targeted temperature control is needed.
Ductless Mini Split Repair and Installation
Not every space in a Longmont home is well served by ductwork. Finished basements, additions, sunrooms, converted garages, and older houses without existing ducts all benefit from a different approach. Ductless mini split systems heat and cool those spaces directly, room by room, with impressive efficiency and almost no noise. We have installed and serviced a lot of these around town, and they solve comfort problems that traditional systems simply cannot.
Common Problems We Fix
- One zone refuses to heat or cool while the others work fine
- The indoor head leaks water down the wall
- Weak airflow even when the unit is set to run hard
- The remote or controls stop responding to commands
- Ice forming on the indoor or outdoor unit
- A musty smell coming from the wall-mounted head
- The system runs but never reaches the temperature you set
- Clicking or buzzing from the outdoor compressor
- A unit that powers down unexpectedly during operation
When we handle ductless AC repair, we look closely at the refrigerant lines, the individual zones, and the connection between indoor heads and the outdoor unit, since these systems depend on every part working in sync. For ductless AC installation, placement is everything, and we plan each head so it covers the space without wasting energy. The payoff is targeted comfort exactly where you want it, lower operating costs, and a quiet system that fits the way you actually use your Longmont home.
Emergency HVAC Repair
Heating and cooling systems have a way of failing at the worst times, late at night, over a holiday weekend, or in the middle of the coldest stretch of the year. When that happens, you do not need a runaround. You need someone local who can respond fast. Our emergency HVAC repair service exists for exactly those moments, when waiting is not an option and your family needs the system back up now.
Common Problems We Fix
- The furnace dies completely on the coldest night of the winter
- The air conditioning quits during a brutal summer heat wave
- A burning smell or smoke coming from the equipment
- A gas odor near the furnace or boiler that needs immediate attention
- Water leaking fast enough to threaten floors or ceilings
- A complete loss of heat with young children or older family at home
- Loud bangs or a sudden shutdown that leaves the house unsafe
- A boiler tripping its safety lockout over and over
- A frozen or failed system right before a cold front arrives
In an emergency, our first job is to make your home safe, then get your comfort back as fast as we responsibly can. We arrive ready to diagnose the failure on the spot, and because we know Longmont homes and the systems in them, we usually pinpoint the issue quickly. We will be straight with you about what went wrong and what it takes to fix it. The long-term value of a fast, honest emergency response is simple, you sleep easier knowing your local HVAC pros pick up when it counts.
Why Longmont Homeowners Choose Longmont Heating and Air Pros
Deep Local Expertise
We are not a regional outfit parachuting in from somewhere down I-25. We are the trusted local experts in Longmont for heating and cooling, and we know this community because we work in it every day. We understand how homes near Old Town hold heat differently than the newer builds on the east side, and how a place tucked near the foothills handles wind and cold in its own way. That familiarity means we walk into your home already knowing what to look for, which gets your system running right that much faster.
Root-Cause Diagnostics
Anyone can swap a part and hope. We would rather find out why the part failed in the first place. When a homeowner near Southmoor Park called us about a furnace that kept shutting down, the easy move would have been to replace the igniter and leave. Instead we traced it to a restricted flue, fixed the real problem, and the furnace has run clean ever since. Root-cause diagnostics save you from paying twice for the same headache, and they are the reason our repairs tend to stick.
Respect for Your Home
Your home is not a job site to us, it is where your family lives. We lay down protection, wear shoe covers, and clean up before we leave so the only sign we were there is a system that works the way it should. We treat a tidy basement utility room with the same care as a finished living space. Homeowners notice that, and it is one of the reasons so many of our calls come from neighbors who were referred by someone down the street.
Modern Systems Expertise
HVAC technology keeps moving, and we move with it. From high-efficiency furnaces to variable-speed air conditioning and modern ductless mini splits, we stay current on the equipment that makes a real difference in a Longmont home. A family out near the Prospect neighborhood came to us wanting better comfort in a hard-to-heat addition, and a properly placed ductless system solved it without tearing into walls for ductwork. Knowing the newer options means we can match the right solution to your home instead of forcing an old approach onto a new problem.
Dependable Scheduling and Emergency Response
When we give you a window, we show up in it. Your time matters, and we run our days so you are not stuck waiting around wondering if anyone is coming. When something fails outside normal hours, our emergency HVAC response is ready, because a furnace does not check the calendar before it quits. Whether it is a scheduled installation or a midnight no-heat call, you can count on your local Longmont Heating and Air Pros to be there when we say we will.
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Our Service Process
- You reach out and we listen. When you call, we ask the right questions to understand what your system is doing and how urgent it is. That conversation alone often tells us a lot about what is going on inside your Longmont home before we even arrive.
- We diagnose the real problem. Our technician inspects the system thoroughly, tests the components, and finds the actual root of the issue rather than the first symptom we see. You get a clear explanation in plain language, not a wall of jargon.
- We do the work right. Once you know what is going on and how we plan to fix it, we get to work with the proper parts and methods. Whether it is a quick repair or a full installation, we do it to last, not just to get through the day.
- We confirm everything works. Before we leave, we test the system, check that every room is responding the way it should, and clean up after ourselves. You are left with a home that is comfortable and a system you can trust through the next season.
Service Area in and Around Longmont, Colorado
Longmont is home base for us, and we cover the whole city, from the established streets around Old Town to the newer neighborhoods spreading out toward the east. We are just as comfortable working in Spring Gulch, Southmoor Park, the Prospect neighborhood, or the family streets near downtown. Wherever you are inside the city, we are close enough to respond quickly and familiar enough with the area to get straight to work.
Beyond the city limits, we proudly serve the surrounding communities that share our part of Colorado. Up in Mead, we handle everything from furnace repair to ductless installs for homes spread across that growing area. In Lyons, where the canyon weather can be its own challenge, we keep heating and cooling systems running through the seasonal swings. And up in Allenspark, where mountain elevation makes dependable heat absolutely essential, we are there for the homeowners who need a team that understands high-country comfort. No matter which of these towns you call home, you get the same local care and the same straight answers.
Professional HVAC Repair vs DIY Attempts
There is a real satisfaction in fixing things around the house yourself, and for plenty of jobs that instinct serves you well. Heating and cooling systems, though, are a different story. Modern HVAC equipment combines electrical components, refrigerant under pressure, gas connections, and tightly tuned controls, and a small mistake in any one of those areas can turn an inconvenience into a genuine hazard. We have been called out to plenty of homes in Longmont where a well-meaning repair attempt made the situation worse and more expensive than the original problem.
Take refrigerant, for example. It is not something you can simply pour in like oil in a car. Handling it requires the right tools, the right training, and an understanding of how the whole system behaves under pressure. Get it wrong and you can damage the compressor, the single most expensive part of an air conditioner. The same goes for gas furnaces and boilers, where a missed connection or an overlooked safety control is not just a comfort issue, it is a safety one. These are the moments where guessing has real consequences.
There is also the matter of diagnosis. A furnace that will not heat could be tracing back to a dozen different causes, and swapping parts one at a time hoping to get lucky burns money fast. Our technicians read the whole system the way someone reads a familiar street, recognizing the patterns because we have seen them so many times in Longmont homes. That experience turns a frustrating afternoon of trial and error into a focused repair that actually solves the problem.
None of this means you should feel helpless. Changing your air filter, keeping the outdoor unit clear of leaves and debris, and paying attention to early warning signs are all genuinely useful things you can do. But when it comes to the inner workings of your system, leaning on professional HVAC repair protects your home, your equipment, and your family. It is the difference between a quick fix that lasts and a project that keeps coming back.
Frequently Asked Questions
How quickly can you respond to an HVAC problem in Longmont?
For most calls in Longmont, we can get to you the same day or the next, and for true emergencies like a furnace that has died in the cold, we respond as fast as we safely can. Because we are local, we are rarely far from your door.
Is it better to repair my old furnace or replace it?
It depends on the age of the unit, how often it has needed repairs, and how efficiently it runs. We will give you a straight assessment so you can decide. If a repair makes sense, we say so. If you are pouring money into a failing system, we tell you that too.
How often should I have my HVAC system serviced?
We recommend having your heating system checked before winter and your air conditioning checked before summer. Two seasonal visits a year catch small issues before they become breakdowns, which matters with the temperature swings we get along the Front Range.
Why are some rooms in my house hotter or colder than others?
Uneven temperatures usually point to airflow issues, ductwork problems, or a system that is not sized correctly for the home. It is a common complaint in older Longmont houses especially, and it is almost always fixable once we find the cause.
Do you work on ductless mini split systems?
Yes. We handle both ductless AC repair and ductless AC installation throughout the area. These systems are a great fit for additions, basements, and homes without existing ductwork, and we have installed many of them across Longmont.
My AC is running but the house will not cool down. What is wrong?
That symptom can come from low refrigerant, a dirty coil, a failing compressor, or an airflow restriction, among other things. Rather than guess, we diagnose it properly so you are not paying for a part that was never the real issue.
Do you handle boiler systems?
We do. A number of Longmont homes use boilers with radiant or baseboard heat, and hydronic systems take specific knowledge to service well. We are comfortable with both boiler repair and boiler installation, and we balance the whole system so every room heats evenly.
What should I do if I smell gas near my furnace?
Leave the home, get everyone out, and call your gas utility from a safe distance. Once the area is safe, reach out to us and we will inspect the system to find the source and make sure everything is operating safely before you rely on it again.
Is there a good HVAC company near me in Longmont?
You are looking at it. We are based right here and serve the entire city along with Mead, Lyons, and Allenspark. Being local means faster response, real familiarity with area homes, and a team your neighbors already know.
How do I know what size system my home needs?
Proper sizing comes from looking at your home’s square footage, layout, insulation, and how it is used, not from a rule of thumb. We take the time to size equipment correctly so your system runs efficiently and keeps the whole house comfortable.
Can a new system really lower my energy use?
Often, yes. Modern high-efficiency furnaces, air conditioners, and ductless systems use noticeably less energy than older equipment. When we replace an aging system in a Longmont home, many homeowners see the difference reflected in their monthly bills.
What causes a furnace to short cycle?
Short cycling, where the furnace turns on and off rapidly, can stem from an oversized unit, a clogged filter, a faulty thermostat, or an overheating safety shutoff. It wears out the system fast, so it is worth diagnosing rather than ignoring.
Do you offer emergency HVAC repair after hours?
Yes. Systems do not fail on a convenient schedule, so our emergency HVAC repair is available when you need it most. If your heat is out in the cold or your cooling has quit in a heat wave, reach out and we will respond quickly.
Will you clean up after the work is done?
Always. We protect your floors, keep the work area tidy, and clean up completely before we go. We treat your home with respect, and we want the only thing you notice after we leave to be a system that works the way it should.
Comfort You Can Count On in Longmont
At the end of the day, heating and cooling come down to trust. You are letting someone into your home to handle systems your family depends on, and you deserve a team that takes that seriously. We have built our name in Longmont one honest repair and one careful installation at a time, and we intend to keep it that way. When you choose us, you are choosing neighbors who know this city, who show up when promised, and who fix the real problem instead of the easy one.
Whether it is a sweltering July afternoon or the coldest morning of January, your local Longmont Heating and Air Pros are ready. From AC repair and furnace repair to boiler work, ductless systems, and emergency response, we bring the same expertise and care to every call across Longmont, Mead, Lyons, and Allenspark. Let us show you why so many homeowners here count on us season after season. Contact us today.
Zip codes we serve: 80501, 80503, 80504, 80542, 80540, 80510
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
Area We Are Servicing
Final Thoughts on Home Comfort & HVAC System Care
Taking care of your home means maintaining your heating and air conditioning systems. Simple steps like scheduling regular HVAC maintenance, replacing air filters, and checking your thermostat can make a big difference. However, when professional service is needed, it’s important to trust a team with the experience to handle it properly.
At Longmont Heating and Air Pros, we proudly serve Longmont by keeping essential comfort systems running safely and efficiently year-round. We take pride in our work and in supporting our community with reliable long-term solutions. We look forward to serving you. We also serve the Firestone area at Firestone Heating and Air Pros.