AC Repair in Florissant, MO
Air conditioners here run from May through September. If yours quits, tell us what it's doing and a licensed contractor who covers St. Louis County will get in touch.
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Five months of hard running takes its toll
Your air conditioner works from May through September here. On afternoons averaging 87°F, it runs long stretches just to hold the house steady. That kind of demand wears on the capacitor and the compressor, the parts that carry the load every time the unit cycles on.
St. Louis County has also seen 108 damaging wind events and 77 hail storms over the past ten years, with hail up to 2.5 inches. Wind can rattle loose the electrical connections in the outdoor unit. Hail that size can dent the condenser coil or bend its fins. Either one shows up the same way. The air coming from your vents is not as cold as it should be, or the unit outside is running but not keeping up.
- 5 months
- May through September, your air conditioner is on duty
- 87°F
- the average summer afternoon it cools against
- 77 hail events
- in ten years, and hail bends the fins on outdoor coils
- 108 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 St. Louis County, so the repair decision comes down to the unit's condition.
Estimates for a typical St. Louis County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Missouri 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.
- Why is my AC not blowing cold air?
- Most of the time the filter is clogged and starving the system of airflow, or the refrigerant level is low from a leak. A dirty filter forces the coil to work harder and it can ice over, which cuts off cold air even though the unit runs fine. Low refrigerant will not fix itself and needs a contractor to find the leak and repair it. With summer highs averaging 87°F here, a system losing its cooling power shows up fast.
- Why is my AC leaking water?
- Water around your unit usually means the condensate drain line is clogged or the drain pan has rusted through. Algae and dirt build up in that line over a cooling season and block the path water normally takes outside. A frozen coil that then thaws can also dump more water than the pan or drain can handle at once. A contractor can clear the line or replace the pan depending on what they find.
- Why won't my AC turn on?
- Check your thermostat first, since dead batteries or a setting bumped off cool will stop the system before it ever starts. If the thermostat looks right, a tripped breaker or a blown fuse at the outdoor unit is the next most common cause. Florissant sees frequent storms, including 108 damaging wind events over the past ten years, and power surges from those can trip a breaker or damage electrical components. If resetting the breaker does not bring it back on, the system needs a contractor to look at it.