Whether it's a sudden breakdown or a planned efficiency upgrade, Longmont HVAC has you covered with expert diagnosis, quality installs, and friendly, on-time service.
A house with no cooling in summer or no heat in winter can't be put on hold, so we don't. We send experienced technicians out for same-day visits and repairs built around how these systems actually fail in our local homes.
Most of the calls we answer come down to two things: a house that won't cool, or a house that won't heat. Here's how we handle both.
A dead air conditioner on a hot afternoon is the call we run most. The usual culprit is a small electrical part, a capacitor or contactor, that our trucks carry, so most AC repairs are finished in one visit. Pricing is upfront, and we'll tell you honestly whether a repair is worth it on an older unit.
When the furnace clicks but never lights, lights and shuts off, or runs without warming the house, the cause is usually one component. We test the ignition, airflow, and safety controls to find it. You'll get a clear quote first, plus a safety check of the combustion and venting while we're there.
One call handles it all. AC repairs, furnace service, heat pumps, mini-splits, duct cleaning, and emergencies, handled by experienced professionals.
New air conditioners sized by load calculation and commissioned properly.
One call for any breakdown, heating or cooling, with the fault found and fixed.
Heat pumps sized for your climate, with backup heat set up correctly.
Quiet, efficient ductless systems with clean line-set installs.
Honest repair-or-replace advice, and clean changeouts when it's time.
Dust, odors, and weak airflow traced back to the ductwork and fixed.
High-efficiency furnaces sized for your home and vented correctly.
Cold air back fast, with the common parts already on the truck.
Complete heating and cooling systems designed around your home's actual load.
Seasonal tune-ups that catch small problems before they strand you.
Igniters, flame sensors, blowers, and boards fixed, most in one visit.
Heating systems of every type repaired and tested before we leave.
Get a rate over the phone from our expert technicians, fast, professional service.
Call (970) 602-4958Wondering if it's bad enough to call? These are the most common heating and cooling problems we solve in homes across the area.
Low refrigerant, a failed compressor start, or a dirty condenser can all masquerade as the same symptom. Real diagnosis beats parts-swapping every time.
AC repairShort cycling wastes gas, stresses the heat exchanger, and never quite warms the house. We find the safety control tripping it and fix the cause.
Furnace repairThat slow decline in performance isn't age, it's neglect compounding. A proper clean-and-tune brings most systems back to spec in one visit.
Maintenance & tune-upsA system past 12 to 15 years that needs a repair every season is telling you something. We'll give you the honest math on repair versus replacement.
System replacementDust settling everywhere within a day of cleaning, musty odors when the system kicks on, or allergy flare-ups indoors all point to the ductwork.
Air duct cleaningAdditions and bonus rooms rarely get enough duct capacity. A dedicated ductless head fixes the problem permanently.
Mini-split installationWhen the heat is out in January, hours matter. Our local technicians roll out same-day with stocked trucks, ready to repair on the spot.
We don't cut corners. Our team is experienced, background-checked, and fluent in every major brand, from a 20-year-old gas furnace to the newest inverter-driven heat pump.
You'll get a clear written quote before any work starts, and the price you approve is the price you pay. That's why so many customers call us back.
A proper repair includes the details: static pressure check, capacitor test under load, combustion analysis on furnaces, and a clean condensate path that won't back up in August.
Longmont HVAC has been keeping homes comfortable in this community and the surrounding CO towns for years. We understand the local climate and the wear it causes because this is our home, not just our service area.
Every technician on our team is seasoned, background-checked, and trained across air conditioners, furnaces, heat pumps, and ductless systems. We tailor every recommendation around the system you have and the way you use it. When you need help, you want a team that can be there fast, not a franchise dispatcher hundreds of miles away.
Talk to someone who actually knows heating and cooling. Honest, no-pressure pricing over the phone.
From the first call to the final airflow check, our method is built to solve the problem completely the first time.
Reach us at (970) 602-4958. We'll ask what the system is doing, give honest first guidance over the phone, and set up a visit at your convenience.
A technician evaluates the unit on-site, confirms exactly what's wrong, and lays out a plan and a price before any work begins.
Most repairs finish the same visit, our trucks carry the common parts. Replacements are installed to code with proper sizing, sealed connections, and clean workmanship.
The job isn't done until conditioned air is flowing and verified. We'll also show you the simple habits, and offer the maintenance schedule, that add years to the system's life.
Upfront pricing · Same-day service available
Speed matters when the temperature is climbing or dropping. This is the sequence our team runs through, from the moment your call comes in to the moment your system is running again.
When you call (970) 602-4958, you reach our local team directly. We listen to what's going on, note the details that matter, and get you on the books, often within hours, with quick guidance on what to do until we arrive.
There's no waiting around for days. A fully equipped technician pulls up to your home, often same-day, with the parts already on board to diagnose and start fixing right then.
The technician confirms exactly what failed and why, then fixes it on the spot, and if the system is beyond saving, walks you through right-sized replacement options with real numbers and a realistic timeline.
We don't disappear once the visit is done. We follow up to confirm everything is holding, and for systems in their later years we'll suggest the maintenance rhythm that keeps them reliable instead of surprising you.
"Our restaurant's rooftop unit failed on a Friday with a full weekend of reservations booked. Their team had us cooling again before the dinner rush. They clearly understood what downtime costs a Longmont business, and they came back the next week to fully service the second unit. Customer for life."
"From the estimate to the final walkthrough, the whole install was clear and professional. The crew wore shoe covers, put down drop cloths, hauled off the old equipment, and the final bill matched the quote to the penny. The new system is so quiet we barely notice it running. I'd send anyone in Longmont their way."
"Years of dust, pet hair, and who knows what else came out of our ducts. After the cleaning, rooms that never got air finally do, and my wife's morning allergies have all but disappeared. They showed us before-and-after photos of everything they pulled out."
We treat your home the way we'd treat our own: thoroughly, honestly, and with an eye on the long term. Here's the standard you can count on from us every time.
Hands-on experience is the gold standard for HVAC work. Every technician on our team has years of field experience across air conditioners, furnaces, heat pumps, and ductless systems, ensuring your home is serviced according to proven best practices.
We size every replacement to an actual load calculation rather than defaulting to whatever's on the truck. Installations get done to code: correct gas and electrical work, balanced airflow, and full commissioning. You get a system that performs for years, not just on day one.
Our team believes in keeping systems alive with simple, scheduled care. If you want years more from your current equipment, our spring and fall maintenance visits clean coils, verify the charge, and test every safety control. It's that simple. This approach is why so many homeowners recommend us.
We cover every community listed below with same-day and scheduled HVAC service.
Complete HVAC care in Lakewood. Repairs, installations, duct cleaning, and seasonal tune-ups.
HVAC service in LakewoodExperienced HVAC technicians serving the Fort Collins area. Upfront pricing and honest recommendations.
HVAC service in Fort CollinsReliable comfort solutions for Aurora homeowners. From quick repairs to full system replacements and upgrades.
HVAC service in AuroraTrusted heating and cooling service for Denver homes and businesses. Fast response when the AC or furnace quits.
HVAC service in DenverKeeping Greeley comfortable in every season. Diagnose, repair, replace, done right the first time.
HVAC service in GreeleyColorado Springs's go-to team for AC repair, furnace service, heat pumps, and mini-splits. Same-day appointments available.
HVAC service in Colorado SpringsStraight answers from the technicians who fix these systems every day.
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Read MoreWaiting only makes a failing system worse and the house less livable. Call now and our experienced team can respond fast with upfront pricing.
Call (970) 602-4958 Now