Why Homeowners Trust Us for their AC services.
We diagnose the issues quickly and accurately — no guesswork
Honest recommendations with no upselling or pressure
Hands-on experience with Colorado’s hottest summers
A local, family-run company you can trust in your home.
AC Services in Longmont & Surrounding Areas
Need AC Services Today?
Call Loos & Sons HVAC for fast, dependable AC experts you can trust. We proudly serve Longmont and Boulder County with honest, reliable service.
Looking for other HVAC services? We also provide Furnace Repair, Heat Pump Installation, Mini Split Services, Boiler Repair, and Geothermal HVAC Solutions throughout Longmont and Boulder County.
A malfunctioning air conditioner can quickly make your home uncomfortable during the summer months. At Loos & Sons HVAC, we diagnose and repair a wide range of air conditioning issues for homeowners throughout Longmont and Boulder County.
Common problems we fix
- Air conditioners blowing warm air
- Frozen evaporator coils
- Refrigerant leaks
- Weak airflow from vents
- Thermostat malfunctions
- Electrical and capacitor failures
- Water leaking around the unit
- Unusual noises or odors
- Systems that won’t start
- High energy bills caused by inefficient operation
Our goal is to identify the root cause of the problem and provide honest recommendations that restore comfort and efficiency.
AC Maintenance & Preventative Service
Regular AC maintenance helps improve efficiency, reduce breakdowns, and extend the life of your cooling system. Our maintenance plans include cleaning, inspections, and performance testing.
Regular maintenance is one of the best ways to extend the life of your air conditioning system. Annual tune-ups help improve efficiency, reduce unexpected breakdowns, and keep your system operating at peak performance.
Our maintenance services include:
- Coil cleaning
- Filter inspection and replacement
- Refrigerant level checks
- Electrical component inspection
- Thermostat testing
- Airflow evaluation
- Overall system performance testing