Takes about a minute. No obligation.
A compressor or a condenser coil that's failed once tends to be nearing the end either way. If this is the second or third repair call on the same unit in a short span, that pattern matters more than the specific part this time. A system that's otherwise been left alone and just hit its first real problem is a different story than one that keeps finding new ways to fail.
A straight answer on what's actually wrong, not just a part number. Whether the refrigerant in your system is still easy to get, since older systems use a type that's being phased out and harder to source. And whether the fix solves the problem in front of you or just buys time before the next one shows up.
NOAA nClimDiv, 1991–2020 normals
AC here runs May through October.
The first hot stretch in May is when a weak compressor or capacitor that made it through last summer finally gives out.
Electricity here runs 14.94 cents a kilowatt-hour, higher than a lot of the country. A failing capacitor or a dirty coil makes the compressor work harder to do the same job, and that shows up on the bill before it shows up as a breakdown. Run a struggling system through a Fort Worth summer and you're paying that penalty for months, not days. Fixing it early costs less than feeding a bad unit all season.
Problems tend to show up in the first weeks of the season, when the load hits a part that was already weak.
Find a contractorBefore anyone comes out, check the easy things first. Look at the thermostat and make sure it's set to cool and set below room temperature, not just sitting there. Go to the breaker panel and check that both the furnace and the outdoor unit breakers are on, since a tripped breaker will stop the whole system cold. Pull the air filter and hold it up to a light. If you can't see light through it, that's choking off airflow and can freeze the coil or strain the compressor. Walk outside and look at the condenser unit itself. Leaves, grass clippings or a cover left on will block airflow the same way a dirty filter does, and clearing the area around it is worth doing either way. If there's ice on the indoor coil or the refrigerant line, shut the system off and let it thaw completely before anyone touches it, since running it iced up just adds strain. Check the drain line near the indoor unit for standing water, and if there's a shutoff switch nearby that's tripped, that usually means the pan sensed water where it shouldn't be. None of this fixes a bad capacitor or a low charge, but it rules out the simple stuff before a tech has to.
Warm air out of the vents, a system that won't shut off, or short cycling where it kicks on and off every few minutes. Sometimes it's a sound instead, a hard clank at startup, a squeal from the outdoor unit, or a hiss that wasn't there before. Water pooling near the indoor unit usually means a clogged drain line or a frozen coil that's started to thaw. Any of these is worth a call, not a wait and see.
Warm air can mean a low refrigerant charge, a failed capacitor, or a compressor that's wearing out, and a tech needs to check which one before anything gets replaced. Ice on the coil almost always points to restricted airflow or a charge that's off, and running the system that way just puts more strain on the compressor. A clanking sound at startup often means a part has worked loose. A squeal from the outdoor unit usually means a motor bearing is going. None of these get better by running the system longer.
Estimates for a typical Tarrant County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Texas 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.
A diagnostic starts outside, not at the thermostat. The tech checks the capacitor first, since that part fails more than any other and takes seconds to test. Next is the refrigerant charge, measured at the lines rather than guessed from how the air feels. The coil gets a look too, front and back, for ice or a coating of dirt thick enough to block airflow. Electrical connections get checked for a loose wire or a burnt contactor, since a connection that's worked itself loose can mimic a failing part that's actually fine. Only after all of that does a tech say what's actually wrong, and that order matters more than how fast the visit goes.
