HVAC Repair in Longmont, CO80503
Arctic Air Heating & Cooling dispatches licensed, insured heating and air conditioning technicians toLongmont and the 80503 ZIP code 24 hours a day, 7 days a week. Target response time in this service zone: 60-90 minutes.
Dry air, wide day-to-night swings and high altitude all change how combustion and refrigerant systems behave. Across the 80503 area that translates into a steady stream of failed capacitors, clogged filters, dying blower motors and refrigerant leaks — most of which we can diagnose and repair in one visit.
Talk to a live dispatcher in Longmont
Serving 80503 and Boulder County — no phone trees, no callback waiting.
- We test airflow and static pressure, not just refrigerant charge
- Combustion and carbon monoxide testing on every furnace call
- Digital condition report sent to you the same day
- Financing available on qualifying replacements
★★★★★4.9 average · 272 verified reviews
- Licensed & Insured Technicians
- Background-Checked Crews
- Upfront Flat-Rate Pricing
- Same-Day & Next-Day Service
- No Overtime Charges
- All Work Warrantied
The Longmont80503 calls we answer most often
If your system is doing any of the following, it is worth a diagnostic before the fault gets more expensive.
Refrigerant leak at a flare or coil connection
Thermostat reading several degrees off from reality
Heat pump stuck blowing cold air in heating mode
Yellow or orange burner flame instead of steady blue
Short cycling — on and off every few minutes
Furnace lights then shuts down after a few seconds
Heating and air conditioning service built around Longmont
Homeowners across Longmont call us when the system simply will not keep up. Dry air, wide day-to-night swings and high altitude all change how combustion and refrigerant systems behave. That is why we staff a live dispatch line around the clock instead of routing you to a queue.
In the 80503 area we see a lot of attic-mounted air handlers. Attic heat soak in summer and cold-soak in winter both shorten component life and make insulation checks part of a proper diagnosis.
The busiest week of our year in Longmont is the first stretch of sustained june weather. Systems that idled all season fail in clusters.
Typical Longmont service pricing
| Service | Typical Range |
|---|---|
| Diagnostic / service call | $79 – $158 |
| Capacitor replacement | $189 – $441 |
| Contactor replacement | $200 – $473 |
| Refrigerant leak repair + recharge | $336 – $945 |
| Blower motor replacement | $473 – $998 |
| Compressor replacement | $1,470 – $3,045 |
| Hot surface igniter / flame sensor | $168 – $420 |
| Furnace control board | $399 – $893 |
| Condensate drain / float switch | $137 – $357 |
| Thermostat install (wired or smart) | $158 – $473 |
| Duct cleaning (whole home) | $399 – $945 |
| Full system replacement (installed) | $6,300 – $13,650 |
Market ranges reported for Longmont, CO and the wider Mountain West region. Your flat-rate quote is confirmed on site before any work begins.
Services available in 80503
Residential and light commercial, all major brands, all hours.
Air Conditioning Repair in Longmont
Diagnosis and repair for central air conditioners, heat pumps in cooling mode, ductless mini-splits and packaged rooftop units.
Furnace Repair in Longmont
Gas, propane, oil and electric furnace troubleshooting and repair.
HVAC Installation & Replacement in Longmont
Full system replacement and new construction installs with a Manual J load calculation so the equipment is actually sized for your home.
Heat Pump Repair & Service in Longmont
Heat pump diagnosis and repair for both heating and cooling operation, including cold-climate units, defrost board failures, reversing valve problems, auxiliary heat strip faults and refrigerant charge issues.
24/7 Emergency HVAC Repair in Longmont
Around-the-clock response for no-heat in freezing weather, total AC failure during a heat wave, gas smells, carbon monoxide alarms, water flooding from the indoor unit and complete system shutdowns.
Air Duct Cleaning & Sealing in Longmont
Whole-home duct cleaning and aeroseal-style duct sealing to recover lost airflow, reduce dust and lower the load on your equipment.
HVAC Maintenance & Tune-Up in Longmont
Seasonal precision tune-ups that catch failing components before they strand you.
Commercial HVAC Service in Longmont
Service for light commercial and commercial properties including rooftop packaged units, VRF and VRV systems, split systems, make-up air units and building automation controls.
What happens when you call
No forms, no waiting for a callback window. One phone call starts the whole process.
- Step 1: Call the dispatch lineYou reach a live dispatcher, not a recording. They confirm your address, the symptom you are seeing and how urgent it is.
- Step 2: Get matched to the nearest licensed techDispatch routes your job to the closest available licensed technician who already carries the common parts for your equipment.
- Step 3: On-site diagnosis with a flat quoteThe tech tests the system, shows you what failed and gives you a written flat-rate price before any work starts.
- Step 4: Approved repair, same visit when possibleMost repairs are finished on the first visit. If a part has to be ordered you get a firm return window, not a maybe.
Servicing Longmont and Boulder County
Our 80503 coverage zone centres on Longmont and extends to the surrounding communities listed below. Every technician dispatched into this area is licensed, insured and background-checked, and every job carries a workmanship warranty.
What Longmont homeowners say
“The technician showed me photos of the corroded coil and explained the whole thing without talking down to me.”
— Robert L., verified Longmont customer
“AC died during a heat advisory. Dispatch was honest that it would be a few hours, then called me the moment a slot opened.”
— Angela W., verified Longmont customer
Longmont80503 HVAC questions, answered
What brands do you service in Longmont?
All of them. Our 80503 technicians are trained on Rheem, Bryant, Carrier, Mitsubishi Electric and essentially every other residential brand sold in Colorado, including discontinued lines. We keep a broad parts catalogue on the trucks for exactly that reason.
Why is my furnace short cycling?
Short cycling in Longmont most often comes from a restricted airflow path — a loaded filter, a closed register, an undersized return — or from an oversized unit. It can also be a failing flame sensor or a pressure switch fault. We measure static pressure and temperature rise before concluding anything, because guessing at this one is expensive.
What causes water to leak from the indoor unit?
Almost always a blocked condensate drain line, a failed drain pan float switch, or a frozen coil melting faster than the pan can handle. In Longmont we see algae and dust clogging drain lines constantly during June through August. It is a fast fix but ignoring it ends in ceiling damage.
Is my carbon monoxide risk something I should worry about?
With any combustion appliance, yes. A cracked heat exchanger can spill carbon monoxide into the living space, and it is odourless. We perform combustion analysis and a CO test on every furnace and boiler call in Longmont, and we recommend a working CO alarm on every level of the home regardless of who services your equipment.
Do you charge extra for nights, weekends or holidays?
No. Our pricing in Colorado is the same at 2am on a holiday as it is at 2pm on a Tuesday. Emergency calls are dispatched the same way as scheduled calls and carry no overtime premium.
Is my system low on refrigerant, or is it leaking?
Refrigerant does not get "used up" the way fuel does. If your charge is low, there is a leak somewhere — usually at a flare connection, a schrader core or the evaporator coil. We locate and repair the leak rather than simply topping up the charge, because a top-up alone will fail again.
HVAC service near Longmont, CO
We also cover these Colorado communities with the same 24/7 dispatch line.
Need HVAC help in Longmont 80503?
If you are not sure whether it is worth repairing, call (866) 548-3173 anyway. A flat-rate diagnostic tells you the real number, and you decide from there.
(866) 548-3173Answered 24 hours a day, 365 days a year