AC Repair in Boulder, MT
If your air conditioner quits, tell us what it's doing and a licensed contractor who covers Jefferson County will get in touch.
Tell us about the job
It takes about a minute.
Boulder doesn't ask much of your AC, except when a storm rolls through
Summer afternoons here average 74°F, mild enough that a lot of homes barely run the air conditioner at all. That's easy duty for the unit itself. The heat isn't what causes most of the trouble here.
Over the ten years from 2015 to 2024, this area recorded 19 hail events and 10 damaging wind events, with hail up to 1.5 inches. The outdoor unit sits outside year round, and hail that size can bend the thin aluminum fins on the coil or dent the fan blade enough to throw it off balance. Wind can drive branches and debris into the cabinet or rock the unit on its pad. If your AC has been fine all summer and suddenly sounds rougher or blows warm air after a storm, that's usually where to look first.
- 74°F
- the average summer afternoon it cools against
- 19 hail events
- in ten years, and hail bends the fins on outdoor coils
- 10 wind events
- in ten years, and wind drives debris into outdoor units
NOAA nClimDiv, 1991–2020 normals
A new air conditioner would save little on running costs in Jefferson County, so the repair decision comes down to the unit's condition.
Estimates for a typical Jefferson County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Montana fuel prices and NOAA climate normals. Your home will differ.
Repair makes sense when a part like a capacitor or contactor has failed.
Replacement makes sense when the compressor has failed or the system uses R-22 refrigerant, which is no longer made.
Montana requires HVAC contractors to hold a state license.
The license is held by the contractor, not tied to this specific repair. Montana's Department of Labor and Industry tests for it and keeps the record. Work under $2,500 does not need a licensed contractor. A straightforward air conditioner repair can fall under that line, depending on what the job costs.
Whoever opens the refrigerant side of your air conditioner has to hold EPA Section 608 certification. That comes from the federal government, not the state, and it applies whether or not the job falls under Montana's licensing threshold.
Source: Montana Legislature
- Why is my AC not blowing cold air?
- The most common reason is low refrigerant from a leak, which means the system needs more than a recharge, since the leak itself has to be found and sealed. A dirty filter or blocked outdoor unit can also cut off airflow enough that what comes out feels warm. If the outdoor fan isn't running while the indoor blower is, that points to an electrical or capacitor problem rather than refrigerant. A contractor will need to check pressures and airflow to know which one it is, since opening the refrigerant side legally requires EPA certification.
- Why is my AC leaking water?
- Water around your indoor unit usually means the condensate drain line is clogged, so water backs up and spills out instead of draining away. It can also mean the evaporator coil has iced over and is now melting, which points to low airflow or low refrigerant as the real cause. A cracked drain pan will do it too, especially on an older unit. Shut the system off if water is pooling near anything electrical, and have a contractor trace it to the source.
- Why won't my AC turn on?
- Start with the thermostat. Check that it's set to cool and the temperature is actually below the room temperature. If the thermostat looks right, check your breaker panel, since a tripped breaker will shut the whole system down with no warning at the unit itself. If the breaker's fine and it still won't start, the capacitor or the control board may have failed, and that's a job for a contractor to diagnose.