Pennsylvania summers don’t ease you in. One week you’re comfortable, the next your AC is running from 7am to midnight trying to keep up. That’s exactly when you want to know the system has been looked after — and exactly when most people realize they haven’t thought about it since last year.
The good news is that AC summer maintenance isn’t complicated. There’s a short list of things you can do yourself, a separate list that needs a trained technician, and a clear line between the two.
How to Maintain an AC System During Summer Months
Keeping an AC system running well through summer comes down to two things: reducing the load on the equipment and catching small problems before they become failures. Most of what falls under AC summer maintenance is either a 10-minute task or a once-a-year professional visit — and both matter.
The DIY side focuses on airflow and cleanliness. The professional side covers refrigerant, electrical, and mechanical components that need tools and licensing to service properly. Neither replaces the other.
AC Summer Maintenance Tasks You Can Handle Yourself
Check and replace the air filter. This is the single most impactful thing you can do on your own. A clogged filter restricts airflow, reduces cooling capacity, and can cause the evaporator coil to freeze over. During summer, when the system runs for hours at a stretch, check it every 30 days. If you can’t see light through it, replace it. We cover this in detail in our guide to replacing your AC filter for optimal cooling.
Clean around the outdoor unit. The condenser — the large unit outside your home — pulls air through its fins to release heat. Grass clippings, leaves, cottonwood seeds, and general debris collect on those fins and restrict airflow. Turn the system off at the disconnect, then clear a two-foot radius around the unit. Gently rinse the fins from the inside out with a garden hose if there’s visible buildup. Don’t use a pressure washer.
Clear the condensate drain line. Your AC removes moisture from the air and drains it through a PVC line, usually near the indoor air handler. Over summer, algae and mold can build up inside that line and cause a clog — leading to the drain pan overflowing and, in some cases, triggering a safety shutoff. Pour a cup of distilled white vinegar down the drain line every month or two to keep it clear.
Check your thermostat and vents. Make sure supply vents throughout the house are open and unobstructed by furniture or curtains. Confirm your thermostat is responding correctly to adjustments and that the fan is set to AUTO rather than ON — a fan set to ON redistributes moisture the coil has already removed back into your living space.
What a Professional AC Summer Tune-Up Includes
Some components of AC summer maintenance can’t be safely or accurately handled without proper equipment and certification. A professional tune-up covers:
Evaporator and condenser coil cleaning. Both coils collect dirt over time. A dirty evaporator coil can’t absorb heat efficiently; a dirty condenser coil can’t release it. Professional coil cleaning restores heat transfer and keeps efficiency where it should be — something a garden hose can’t do thoroughly.
Refrigerant level check. Low refrigerant is a sign of a leak, not just a recharge situation. A technician will check the charge, identify any leaks, and repair them before adding refrigerant. Handling refrigerant requires EPA Section 608 certification — this is not a DIY task.
Electrical connections and components. Loose or corroded electrical connections are a common cause of system failures mid-season. A technician will inspect and tighten connections, check capacitors and contactors, and test the system’s electrical draw against specifications.
Blower motor and belt inspection. The blower moves conditioned air through your ductwork. A worn belt or failing motor reduces airflow throughout the house. Catching these early prevents a summer breakdown.
Condensate system check. Beyond what you can clear with vinegar, a technician will inspect the full drain system, including the float switch that shuts the system off if the pan overflows.
Total Comfort Solutions’s Total Comfort Club members get priority scheduling and annual tune-up visits as part of their membership — which means the system gets checked before problems surface, not after.
How Often Should You Schedule AC Maintenance in Summer?
Once a year is the standard recommendation for professional AC maintenance, and spring is the ideal time — before peak demand hits and schedules fill up. If you missed the spring window, it’s still worth scheduling during summer. An AC summer tune-up on a system that’s been running for two months is better than skipping it entirely.
On the DIY side, the filter and outdoor unit should be checked monthly during the months the system runs regularly. The condensate drain line is worth a rinse every six to eight weeks.
Signs Your AC Needs More Than Routine Maintenance
Regular AC summer maintenance keeps most systems running well, but some symptoms point to a problem that goes beyond a tune-up:
- Warm or inconsistent air from supply vents, even when the system is running
- Ice on the refrigerant lines or the outdoor unit
- Water pooling around the indoor air handler
- Unusual sounds — rattling, banging, or a high-pitched squeal
- Short cycling — the system turning on and off every few minutes without completing a full cooling cycle
- A spike in energy use without a change in behavior or outdoor temperatures
Any of these warrant a service call, not just a filter change. Left unaddressed, most of these issues get worse through the summer and more expensive to fix.
Keep Your System Running Through the Season
Knowing how to maintain an AC system during summer is half the job — staying consistent with it is the other half. The systems that make it through a Pennsylvania summer without a breakdown are almost always the ones that were checked before the season started and kept up with along the way.
If your system is due for a professional AC summer tune-up, or if something feels off with how it’s running, Total Comfort Solutions Heating & Air Conditioning is available throughout Bucks County and the surrounding area.
Give us a call at (215) 323-5330 or reach out through our contact page to schedule your visit.