How Often Should You Service Your AC in Connecticut?

If you're a homeowner in Fairfield County or Westchester County, your air conditioning system works hard during our hot, humid summers. Regular maintenance isn't optional — it's essential for keeping your system running efficiently and avoiding costly emergency repairs.

Here's our professional recommendation on how often to service your AC, and what that service should include.

The Short Answer: Once a Year

Every AC system should be professionally serviced once per year, ideally in the spring before you need it. Think of it like an oil change for your car — skip it, and you're asking for trouble.

For homes with central AC and a separate heating system, the schedule looks like this:

• Spring (April–May): AC tune-up
• Fall (September–October): Heating system check

If you have a heat pump that handles both heating and cooling, we recommend service twice a year since the system runs year-round.

What's Included in a Professional AC Tune-Up?

A thorough AC maintenance visit takes 60–90 minutes and includes:

• Refrigerant check — verify charge level, check for leaks
• Electrical inspection — test capacitors, contactors, wiring connections
• Thermostat calibration — ensure accurate temperature readings
• Condensate drain cleaning — prevent water damage and mold growth
• Coil cleaning — dirty coils reduce efficiency by 20–30%
• Air filter check — replace if needed
• Blower motor inspection — check belt tension, lubricate bearings
• Ductwork inspection — check for leaks, disconnections
• Performance measurement — verify supply/return temperature differential (should be 15–20°F)

The Real Cost of Skipping Maintenance

We see it every summer: a homeowner calls for emergency AC repair on the hottest day of the year. More often than not, the problem could have been prevented with a spring tune-up.

Here's what deferred maintenance actually costs:

A well-maintained AC system lasts 15–20 years. A neglected one? Often just 8–12 years. That's potentially $10,000+ in premature replacement costs.

DIY Maintenance Between Professional Visits

Between annual tune-ups, homeowners can do a few things to keep their system running well:

1. Change your air filter every 1–3 months. This is the single most important thing you can do. A dirty filter restricts airflow, reduces efficiency, and can freeze your evaporator coil.
2. Keep the outdoor unit clear. Maintain 2 feet of clearance around your condenser. Trim bushes, remove leaves and debris.
3. Check your thermostat. Make sure it's set to "Auto" not "On" (running the fan constantly wastes energy and doesn't cool better).
4. Listen for unusual sounds. Grinding, squealing, or banging noises mean something is wrong — call a professional.

Maintenance Plans: Worth It?

We offer maintenance plans that include annual tune-ups for both your AC and heating system. Plan members get priority scheduling (important during heat waves), discounted repair rates, and peace of mind. Ask us about our current plans when you call.