Schedule a Service
Professional tune-ups are important, but they happen once or twice a year. What you do in the months between those visits has a big effect on how well your heating and cooling system performs, how much it costs to run and how likely it is to fail on the hottest or coldest day of the year.
This checklist breaks HVAC maintenance into simple tasks McKinney homeowners can handle themselves, plus the work that should be left to a professional.
Every Month
Check the Air Filter
Pull it out and look. If it is gray and you cannot see light through it, replace it. During spring pollen season and peak summer, filters may need changing more often than the package says, especially with pets.
Look at the Thermostat
Make sure schedules still match your routine and the batteries are fresh.
Walk Past the Vents
Keep supply vents open and return grilles clear of furniture, rugs and curtains.
Glance at the Secondary Drain
Find the pipe that ends near your eaves or above a window. If water is dripping from it, the primary condensate drain may be clogged and should be checked.
Every Season
Spring
- Schedule an AC tune-up.
- Clear debris, cottonwood and grass clippings from around the outdoor unit.
- Gently rinse the outdoor coil with a garden hose if it looks dirty, without opening the unit.
- Test cooling on a warm day.
Summer
- Keep two feet of clearance around the outdoor unit.
- Trim shrubs that have grown in.
- Watch for ice on refrigerant lines or water near the indoor unit.
Fall
- Schedule heating maintenance.
- Test the heat before the first cold snap.
- Test smoke and carbon monoxide alarms.
- For heat pumps, confirm heating mode and backup heat work.
Winter
- Keep the outdoor heat pump unit clear of leaves and ice buildup.
- Avoid running heat pumps on emergency heat unless needed.
- Keep storage boxes away from attic or closet furnaces.
Once a Year
- Check that the attic platform and walkway to the equipment are clear and safe.
- Look at the drain pan under the attic unit for water or rust.
- Make sure exterior vents for high-efficiency furnaces are not blocked.
- Review energy bills for unusual changes compared with last year.
What You Should Leave to a Professional
Some maintenance tasks require training, tools or safety precautions:
- Testing capacitors, contactors and electrical connections
- Measuring refrigerant pressures and temperature split
- Cleaning indoor coils and blower components
- Clearing and treating condensate drain lines
- Inspecting burners, flame sensors, igniters and venting on gas furnaces
- Testing heat pump defrost controls and reversing valves
Never open electrical panels on the outdoor unit; components can hold a charge even with power off.
What Skipping Maintenance Can Cost
| Skipped task | Possible result |
|---|---|
| Filter changes | Frozen coils, overheating, weak airflow |
| Drain clearing | Attic pan overflows and ceiling stains |
| Coil cleaning | Longer run times and higher bills |
| Electrical checks | Mid-summer failure to start |
| Furnace safety checks | Ignition problems and unsafe operation |
Why Maintenance Matters More in McKinney
Long Cooling Seasons
Air conditioners often run from spring well into fall. More hours means more wear.
Hot Attics
Most equipment and ductwork sit in attics, where heat stresses drains and connections.
Pollen and Dust
Spring pollen, cottonwood and dust from nearby construction can load filters and coils quickly.
Sudden Freezes
Heating systems need to be ready for cold fronts that arrive quickly.
Signs Your System Needs a Professional Now
- Breakers tripping
- Ice on the refrigerant lines
- Water overflowing near the indoor unit
- Burning or gas smells
- Grinding or screeching noises
- The system running constantly without reaching the setpoint
Schedule HVAC Maintenance With ClassicABC
ClassicABC Heating & Air helps McKinney homeowners keep their systems ready year-round, backed by over 40 years of industry experience.
- Spring AC tune-ups and fall heating tune-ups
- Clear findings reviewed with you after every visit
- 10% off for veterans, senior citizens and teachers on eligible services
Call 214-310-2665 or schedule maintenance online. Learn more about AC maintenance in McKinney and heating maintenance in McKinney.
Frequently Asked Questions About HVAC Maintenance in McKinney, TX
How often should I schedule HVAC maintenance?
Once in spring for cooling and once in fall for heating.
How often should I change my HVAC filter?
Check it monthly and replace it when dirty.
Can I clean my outdoor AC unit myself?
You can clear debris and gently rinse the coil. Leave anything inside the unit to a professional.
Why does water drip from a pipe outside my house?
That is often the secondary drain, which means the primary drain may be clogged.
Does maintenance really prevent breakdowns?
It cannot prevent every failure, but it helps catch weak parts and clogged drains early.
