06/11/2026
Seasonal Maintenance: How to Check and Maintain Your Air Conditioning System
When summer heat rolls in, your air conditioning system becomes one of the hardest-working systems in your home. The problem is, most homeowners do not think about their AC until it stops working.
A little maintenance now can help prevent higher energy bills, weak cooling, and surprise breakdowns later.
1. Replace or clean the air filter
Start here. A dirty filter blocks airflow, which makes your AC work harder to cool the house. That extra strain can raise your energy bill and wear down the system faster.
For most homes, filters should be checked monthly during heavy use and replaced as needed.
2. Check your vents and return grilles
Walk through the house and make sure vents are open and not blocked by furniture, rugs, curtains, or storage bins.
Your AC needs proper airflow to cool evenly. Blocked vents can create hot spots and force the system to run longer than necessary.
3. Clear the outdoor unit
The outdoor condenser needs room to release heat. Clear away leaves, weeds, grass clippings, branches, and debris around the unit.
Try to keep at least 2 feet of open space around it. Better airflow outside helps the system cool more efficiently inside.
4. Test the thermostat
Set your thermostat to cooling mode and make sure the system turns on, cools properly, and shuts off when it reaches the set temperature.
If the AC keeps cycling on and off, blows warm air, or struggles to reach the temperature, it may need service.
5. Check for water around the indoor unit
Your AC removes moisture from the air, and that water has to drain properly. If you see water pooling near the indoor unit, you may have a clogged drain line.
Do not ignore it. Drainage problems can lead to water damage, mold concerns, and system shutdowns.
6. Listen for unusual noises
Grinding, buzzing, rattling, or banging sounds are not normal. They can point to loose parts, motor issues, electrical problems, or worn components.
Catching those issues early can help you avoid a bigger repair.
7. Schedule professional maintenance
Some things should be checked by a trained technician, including refrigerant levels, electrical components, coils, drain lines, and overall system performance.
The long-term benefit is simple: better cooling, lower operating costs, fewer emergency repairs, and a longer life for your AC system.
Summer is not the time to find out your air conditioner needed attention months ago.
Nationwide Maintenance can help inspect, maintain, and repair the systems that keep your home safe, comfortable, and running properly.