Schedule a Service
In McKinney, your heating and cooling system rarely gets a real vacation. The air conditioner can start running in April and keep going into October. Then, often with little warning, a cold front drops temperatures below freezing and the heat has to come on strong. Between those extremes are short shoulder seasons that are the best times to prepare.
This guide walks through the year the way your HVAC system experiences it, with what to do, what to watch for and when to call for help.
Spring (March to May): Get Ready for the Long Cooling Season
Spring is the most important season for HVAC planning in North Texas.
What to do:
- Schedule an AC tune-up before the first 90-degree week.
- Replace the air filter; spring pollen loads filters quickly.
- Clear leaves, mulch and cottonwood from around the outdoor unit.
- Test the AC on a warm day so problems show up before peak heat.
What to watch for:
- Warm air from vents on the first warm day
- Unusual noises when the outdoor unit starts
- Musty smells when cooling begins
Appointment availability is usually better in spring than in the middle of summer.
Summer (June to September): Keep the System Running Smoothly
This is when your air conditioner works hardest. Long run times expose weak parts and clogged drains.
What to do:
- Check the filter monthly.
- Glance at the secondary drain outlet near your eaves; water dripping there means the primary drain may be clogged.
- Keep blinds closed on sun-facing windows in the afternoon.
- Avoid big thermostat swings; steady settings are easier on the system.
What to watch for:
- The house falling behind the thermostat in the afternoon
- Ice on refrigerant lines
- Water stains on ceilings below the attic unit
- Breakers tripping
If the upstairs in a two-story home stays several degrees warmer than downstairs, make a note. Fall is a good time to look at zoning, ductwork or a second system.
Fall (October to November): Switch Over to Heating
The cooling season winds down, and the heating system needs to wake up after months of sitting idle.
What to do:
- Schedule heating maintenance before the first cold snap.
- Replace the filter again.
- Test the heat on a cool day.
- Test smoke and carbon monoxide alarms, especially in homes with gas appliances.
- For heat pumps, confirm the system switches modes and backup heat works.
What to watch for:
- A burning smell that lingers beyond the first few minutes
- Furnace lighting and then shutting off
- Heat pump blowing cool air
Fall is also a good time to plan any system replacement, since you are less likely to be rushed.
Winter (December to February): Be Ready for Hard Freezes
Most McKinney winter days are mild, but freezes can be severe, as February 2021 showed.
What to do:
- Keep the outdoor heat pump unit clear of debris and ice buildup.
- Avoid running heat pumps on emergency heat unless needed.
- Keep cabinet doors open under sinks on exterior walls during freezes.
- Know where your water and gas shutoffs are.
What to watch for:
- Heat pump outdoor units staying encased in ice
- Furnace lockouts or blinking error codes
- High-efficiency furnace drains freezing in the attic
Year-Round Habits That Help
- Change or check filters regularly.
- Keep vents and returns open and unblocked.
- Keep the outdoor unit clear on all sides.
- Schedule one cooling and one heating maintenance visit each year.
- Keep notes on any comfort problems so you can share them with your technician.
Signs It Is Time to Call a Professional
- Repeated breaker trips
- Burning or gas smells
- Water overflowing near the indoor unit
- Ice on refrigerant lines in summer
- Loud grinding or screeching noises
- A carbon monoxide alarm (leave the home and call 911 first)
Heating and Cooling Help From ClassicABC
ClassicABC Heating & Air helps McKinney homeowners through every season with over 40 years of industry experience.
- AC and heating repair, maintenance and replacement
- Heat pumps, furnaces and ductless systems
- Upfront pricing before work begins
- 10% off for veterans, senior citizens and teachers on eligible services, plus financing for eligible customers
Call 214-310-2665 or schedule service online. Explore our McKinney air conditioning services and heating and air conditioning services in McKinney.
Frequently Asked Questions About Heating and Cooling in McKinney, TX
When should I schedule AC maintenance?
Spring, before the first heat wave.
When should I schedule heating maintenance?
Fall, before the first cold snap.
How often should I change my filter?
Check it monthly during heavy use and replace it when dirty.
Is a heat pump enough for McKinney winters?
For most days, yes. Backup heat or dual fuel helps during hard freezes.
Why is my upstairs warmer than downstairs?
Heat rises and upstairs rooms sit under a hot attic. Ductwork, zoning or a second system can help.
