HVAC Repair in Plano, TX
Homes here need heat from November through March and cooling from May through October. If your system quits, tell us what it's doing and a licensed contractor who covers Collin County will get in touch.
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Eleven months of work, most of it in the heat
Your system in Collin County barely gets a break. Cooling runs May through October, six months of afternoons that average 93°F, and heat takes over for the five months after that. That is eleven months a year where something is always running.
Those long summer afternoons push the compressor hard for hours at a stretch, and that kind of steady strain is what wears down a capacitor or a contactor before its time. Winter nights averaging 36°F are not extreme, but the furnace still cycles on and off through the night, and each start puts wear on the igniter. Add in the storms, 22 winter storms and 86 damaging wind events over the past ten years, and the power grid takes hits too. Statewide, a third of Texas households lost power for at least 24 hours in 2024. Close to half the homes here heat with electricity, so when the power goes out, the heat goes with it.
- 5 months
- November through March, your system heats
- 6 months
- May through October, it cools
- 36°F
- the average winter night it heats against
- 93°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Texas requires HVAC contractors to hold a state license.
Texas issues the license to the contractor, not to the job, so it covers the person or business doing the work rather than any single repair. TDLR is the agency that licenses HVAC contractors in Texas, and that license is what's on file for the contractor you hire.
For a repair on your heating and cooling system, that license is what stands behind the person doing the work. If gas piping or a gas connection is part of the repair, that connection is the part worth getting right, since a poor seal there is what makes a gas repair dangerous rather than just faulty.
Source: Texas Department of Licensing and Regulation
- Why is my heat not working?
- Start with the thermostat and the breaker before you assume the worst. If the thermostat screen is blank, check the breaker panel, since a tripped breaker is the simplest cause. Nearly half of homes here heat with electricity, and a breaker that trips once will often trip again, so if it keeps happening the system needs a look rather than another reset. If the breaker is fine and the furnace still won't fire, listen for it trying to start. A furnace that clicks a few times and shuts off is usually failing to ignite, and that's a job for a licensed contractor, not something to keep restarting on your own.
- Why is my system running but not cooling the house?
- Check the air filter first. A filter clogged with dust blocks airflow across the coil, and when that happens the coil can ice over, which cuts cooling even though the system is still running. If the filter is clean, go outside and look at the outdoor unit. Leaves, grass clippings, or debris packed against the coil fins stop it from releasing heat, and on a 93°F afternoon that alone can keep a house from cooling down. If both of those look fine and the air moving through the vents feels warm, the system needs a contractor to check refrigerant levels and the compressor.
- What can I check before calling for HVAC repair?
- Check the thermostat, the breaker panel, and the air filter. Make sure the thermostat is set to heat or cool as needed and the batteries aren't dead, since a dead thermostat looks exactly like a dead system. Next check the breaker. This area has seen 86 damaging wind events over the last ten years, so a tripped breaker after bad weather is common and easy to miss. Last, pull the air filter and hold it up to the light. If you can't see light through it, that's blocking airflow and is worth replacing before anything else. If all of that checks out and the system still isn't working right, it's time to call a licensed contractor rather than keep guessing.