What Is Normal Temperature for AC in Summer?

Table of Contents

If you’re wondering what temperature your AC should be set to during summer in Tempe, the short answer is somewhere between 72 and 78 degrees Fahrenheit. Studies show the median indoor comfort range during summer months falls between 70 and 75 degrees Fahrenheit, though many homeowners in the Phoenix metro area push their systems harder given that outdoor temperatures regularly climb past 110°F.

In Tempe specifically, your air conditioner isn’t just a comfort appliance. It’s working against some of the most intense heat in the country. According to the U.S. Department of Energy, air conditioners account for about 12% of total home energy expenditure nationally, but in hot desert climates like ours, that number climbs significantly higher. That’s why keeping your system in peak condition matters year-round, not just when it starts struggling.

Here are some things you can get done with the help of your local Tempe air conditioning maintenance specialists to make sure you can handle the desert heat all summer long.

Change Your Filter

Changing your filter regularly is one of the simplest but most important things you can do for your air conditioning system.

  • For optimal efficiency, the government program Energy Star recommends changing your filter once a month, though in Tempe’s dusty, dry environment, some homeowners find they need to do it even more frequently.
  • Always switch your AC off before removing the filter to prevent shock and debris from entering the unit.
  • Replacing the filter regularly helps reduce energy consumption and improves indoor air quality, which matters especially during Tempe’s high-pollen and high-dust seasons.
  • According to the EPA, a clogged filter can increase your system’s energy use by 5 to 15%, a real concern when your AC is running nearly nonstop from May through September.
  • If you’re not sure how to replace your filter or which type to use, our team offers affordable AC repair and maintenance services to walk you through it.

Test That Your Thermostat Is Working

Your thermostat is the primary line of communication between you and your AC system, and when that communication breaks down, your home comfort suffers.

  • It’s worth troubleshooting your thermostat before diving deeper into AC maintenance, since some problems aren’t related to your cooling system at all.
  • Once a month, check that your heater and air conditioner settings are correct. Many programmable thermostats will flag a linking issue and offer maintenance prompts on their own.
  • If you have an older thermostat, you can do a basic test by having someone stand near the furnace while you turn it on to confirm they can hear it start up.
  • You can also remove the thermostat from the wall and visually inspect it for damage or faulty wiring.
  • Smart thermostats have become increasingly popular in the Tempe area because they allow homeowners to manage cooling costs remotely, which is helpful when summer temperatures spike unexpectedly. Our team can help you explore a thermostat upgrade if your current setup is giving you trouble.

Have a Professional Tempe AC Company Clean Your Coils

Because your outdoor unit sits in direct sun here in Tempe, the evaporator and condenser coils are especially prone to dust and debris buildup. Our desert air carries fine particles that settle on coil surfaces and reduce efficiency over time.

Before cleaning, always disconnect power to your air conditioner using the shut-off box near the unit. Then remove any leaves, dirt, or debris from around the coils to ensure proper airflow. A 2023 report from the Air Conditioning Contractors of America found that dirty coils can reduce AC efficiency by up to 30%, making this one of the most impactful maintenance steps you can take.

If you want to stay ahead of breakdowns during the hottest months, our AC maintenance plans are designed to keep your system running efficiently all year. Rescue One Air has earned more than 2,500 five-star reviews from homeowners across the Tempe area, and our technicians are available seven days a week from 7 a.m. to 8 p.m. for both routine and emergency service.

If you need to cool your home and avoid costly repairs, contact us.

FAQs

What temperature should I set my AC to in summer?

Most specialists recommend keeping your thermostat between 72 and 78 degrees Fahrenheit during summer. In Tempe, where outdoor temps can exceed 110°F, staying consistent with your set temperature and keeping up with maintenance helps your system manage the load without overworking.

How often should I change my AC filter in Tempe, AZ?

Energy Star recommends changing your filter monthly, but Tempe homeowners often benefit from doing it more frequently due to the dry, dusty desert environment. Checking your filter every two to three weeks during peak summer is a smart habit.

Why is my AC running constantly but not cooling my home?

This often points to a dirty filter, low refrigerant, or clogged coils. In the summer heat we get in Tempe, even a small drop in efficiency can make it hard for your system to maintain a comfortable indoor temperature. A professional inspection can quickly pinpoint the issue.

How does Tempe’s heat affect my AC lifespan?

Air conditioners in the Phoenix metro area work significantly harder than in moderate climates. The combination of high temperatures, dry air, and dust puts extra strain on compressors and coils over time. Regular maintenance, including coil cleaning and filter changes, can meaningfully extend your system’s life.

When should I call a professional for AC help in Tempe?

If your home isn’t reaching your set temperature, your energy bills have jumped unexpectedly, or your system is making unusual noises, it’s time to call in a pro. Rescue One Air is available seven days a week with extended hours to handle both urgent repairs and routine tune-ups.

Contact Us