An outdoor air conditioning condenser unit positioned on a concrete pad next to a blue-sided house, surrounded by green shrubs and flowering hydrangeas at sunset.

AC Maintenance in Boulder, CO

Tell us about your system, and a licensed contractor who covers Boulder County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
Aerial view of a square outdoor air conditioning condenser unit on a concrete pad beside a house wall with a sliding glass door.

Boulder's real threat to your AC is the weather outside it, not the heat

Summer afternoons here average 78°F, mild enough that your air conditioner is rarely working hard. What it has to survive is everything else. Boulder County has logged 125 hail events and 120 damaging wind events over the past ten years, with hail up to 3 inches recorded. That kind of weather bends fins, dents the cabinet, and can knock the unit out of alignment without you ever seeing it happen.

A tune-up is when a contractor catches that damage. Bent fins choke airflow, a knocked loose panel lets water in, and a unit that's shifted on its pad can strain the lines running to it. None of that shows up as a problem until the next hot stretch, when the system that looked fine all spring suddenly can't keep up.

78°F
the average summer afternoon it cools against
125 hail events
in ten years, and hail bends the fins on outdoor coils
120 wind events
in ten years, and wind drives debris into outdoor units
Isometric line illustration of a cutaway house showing an indoor air handler with branching ducts in the attic space, connected by a line set to an outdoor condenser unit beside the building, with simple furniture in two rooms.
Your air conditioner works hardest from July through August.

NOAA nClimDiv, 1991–2020 normals

What does AC maintenance include?
A contractor checks the refrigerant level, cleans the outdoor coil, and tests the electrical connections and capacitor. They also clear the condensate drain and confirm the system cycles on and shuts off the way it should. The filter gets checked too, since a dirty filter restricts the airflow the whole system depends on. Boulder homes see so little real cooling season that this checkup is really about making sure the system still works on the handful of hot days when it's asked to run.
How often does an air conditioner need maintenance?
Once a year is standard, done before the weather turns warm. That gives a contractor a chance to catch a weak capacitor or a low refrigerant charge before the system has to work. Boulder has recorded 125 hail events and 120 damaging wind events over the past ten years, and either can bend the fins or dent the coil on an outdoor unit. A yearly visit is a good time to have that kind of damage looked at even if the system still seems to run fine.
Is AC maintenance worth it?
Yes, because most of what causes an air conditioner to fail is something a contractor can catch ahead of time, like a weak capacitor or a coil that's losing its ability to shed heat. Skipping it doesn't save the system anything. It just means the problem gets found when the unit quits instead of before. In Boulder, where hail and high wind hit often enough to matter, a yearly check is also a chance to catch storm damage to the outdoor unit before it turns into a bigger repair.