When temperatures climb into the 90s and beyond, your air conditioner has to work much harder to keep your home comfortable. During periods of extreme heat in Olathe, Overland Park, Lenexa, Shawnee, and throughout Johnson County, there are a few simple things homeowners can do to help their HVAC systems run more efficiently and avoid unnecessary strain.

If your air conditioner seems to be running longer than usual, don't panic. In many cases, that's completely normal during a Kansas City heat wave.

1. Set Your Thermostat and Leave It Alone

One of the most common mistakes homeowners make during extreme heat is constantly adjusting the thermostat.

While it may seem like lowering the temperature several degrees will cool your home faster, your air conditioner doesn't work that way. Most systems cool at the same rate regardless of the thermostat setting.

Instead, choose a comfortable temperature and leave it there. Frequent adjustments and large temperature setbacks can force your system to work harder than necessary.

2. Keep the Cool Air Inside

Your air conditioner can only do its job if the cool air stays where it belongs.

During the hottest parts of the day:

  • Keep exterior doors closed
  • Close blinds and curtains on sun-facing windows
  • Minimize unnecessary trips in and out of the house
  • Seal obvious air leaks around doors and windows

These simple steps can significantly reduce heat gain and help your system maintain indoor comfort more efficiently.

3. Check Your Dampers

If your home has a zoning system or manual dampers in the ductwork, make sure they are properly adjusted for the season.

Properly balanced airflow helps direct cool air where it's needed most and can improve comfort throughout your home.

Not sure if your dampers are set correctly? Our technicians can inspect and adjust them during a maintenance visit.

4. Replace or Clean Your Air Filter

A dirty air filter restricts airflow and forces your air conditioner to work harder.

During peak cooling season, it's a good idea to check your filter monthly. Depending on your filter type, household size, and whether you have pets, replacement may be needed every 1–3 months.

A clean filter can help:

  • Improve airflow
  • Increase energy efficiency
  • Reduce wear and tear on your equipment
  • Improve indoor air quality

5. Keep Supply Vents Clear

Furniture, rugs, curtains, and other household items can block supply vents and reduce airflow.

Walk through your home and make sure all vents are open and unobstructed. This allows cool air to circulate freely and helps maintain consistent temperatures throughout your house.

Why Is My Air Conditioner Running All Day?

One of the most common questions we hear during extreme heat is:

"My AC has been running nonstop. Is something wrong?"

Not necessarily.

Most residential air conditioning systems are designed to maintain indoor temperatures approximately 20 degrees cooler than the outdoor temperature.

For example:

  • If it's 100°F outside, your system may only be able to maintain around 80°F indoors.
  • If it's 95°F outside, maintaining 75°F indoors is often achievable.

During extreme heat events, even a properly functioning system may run for extended periods or nearly continuously as it works to keep up with demand.

If your home suddenly stops cooling, temperatures continue rising indoors, or you notice unusual noises or odors, it's time to call a professional.

Stay Ahead of Summer Breakdowns with Preventative Maintenance

The best way to avoid unexpected AC problems during the hottest days of the year is with regular maintenance.

Routine tune-ups help identify small issues before they become expensive repairs and ensure your system is operating as efficiently as possible.

At One Hour Heating & Air Conditioning of Johnson County, our technicians provide thorough air conditioning maintenance and repair services throughout:

  • Olathe
  • Overland Park
  • Lenexa
  • Shawnee
  • Prairie Village
  • Leawood
  • Mission
  • Merriam
  • Gardner
  • Spring Hill
  • De Soto
  • And surrounding Kansas City communities

Need AC Service in Johnson County?

If your air conditioner isn't keeping up with the heat, our team is ready to help.

Whether you need AC repair, seasonal maintenance, or a system replacement estimate, One Hour Heating & Air Conditioning of Johnson County is here to keep your home comfortable all summer long.

Call us today at (913) ONE-HOUR to schedule service or learn more about our Club Membership maintenance program.