
The cost of a new AC unit depends on the size and type. Our guide breaks down AC replacement cost factors so you can decide which option matches your budget.
How cool is too cool?
Your central air conditioner can run continuously when it's in good working order, but window and wall AC units need rest after 8 to 12 hours.
Expect to pay $10 to $50 for replacement air filters when running your AC continuously, as nonstop operation requires more frequent filter changes throughout the year.
You should schedule regular AC service before summer starts to keep your system running efficiently and prevent emergency repairs during the hottest days.
Hiring a local air conditioning repair professional provides reliable support for diagnosing coolant leaks and addressing worn parts when your AC runs constantly without cooling properly.
When you’re battling summer temps, sometimes ice cream isn’t even enough to beat the heat. On these sweltering days, you may be tempted to keep your central air or window unit running nonstop. But how long can you run an air conditioner continuously without running into trouble?
If your central AC is in good working order, running it nonstop shouldn’t be a problem. While you may have heard that HVAC units can overheat, if your air conditioner is in good shape, it shouldn’t have an issue running 24/7, even in warm weather. This is why regular tune-ups and inspections, especially before the hottest months, are a must.
Get your HVAC system serviced and inspected at least once per year. For extra peace of mind, call in a pro twice annually: once before the hottest months of the year and again before the coldest time of year.
The type of air conditioner you have impacts if you can safely run it continuously.
For example, most window units and wall air conditioners aren’t as powerful. These should only run between eight and 12 hours before you give them a break.
So, yes, you can run your air conditioner continuously. However, the real question is: “Why does your air conditioner need to run all day?”
If your air conditioner needs to run continuously to keep your house cool, it might be time to call in a pro for repair or think about getting your AC replaced. In addition to running nonstop, here are some other signs that your AC unit needs some extra attention:
The room or house still feels humid: Air conditioners pull humidity from the air to keep things cool. If your home is still humid, even with the AC running, it might be time to call for HVAC repair.
Strange noises: Most air conditioners aren’t completely silent. However, if you notice strange or loud noises coming from your AC, loose or broken parts may be the culprit.
Energy bills are up: If you notice a jump in your electricity bill, an aging or inefficient AC unit could be to blame.
Leaks: Coolant leaking out of your central air conditioning system spells big trouble. Call a local air conditioning repair company immediately if you notice fluid leaking.
If your AC won’t cool the house down without running constantly and you notice any of the above, it’s probably time to call for HVAC repair.
Do you prefer the feel of nonstop AC in your home? Choosing to run the system 24/7 can keep your home cool and keep the air moving, but there are drawbacks.
Higher electricity bills: You’ll use a lot more power if your AC runs constantly, which means you’ll see a significant increase in monthly electric bills.
Quicker wear and tear: Your AC’s parts eventually wear down with normal use, so you expect them to wear down much faster with continuous AC running.
More filters needed: You’ll need to replace your air filters more often if the AC is always on. HVAC filters cost $10 to $50 a pop, which adds up.

Keeping your air conditioner in good shape means it can cool down your house faster. This way, you don’t have to run it all the time to maintain your desired temperature. Consider these regular maintenance tips to keep your AC running smoothly:
Remove window units seasonally: Keeping a window unit installed year-round makes it harder for your central HVAC unit to heat the room in the winter and shortens the life span of the air conditioner. Learn how to install a window AC unit so that you can confidently take it out in the winter and reinstall it in the spring.
Clean your window unit: Regularly cleaning your window AC unit will keep it running as efficiently as possible. Cleaning your window AC unit takes less than an hour and can be done with supplies you already have at home.
Schedule regular service: Before the weather heats up each year, consider calling the pros to ensure everything’s in working order. The average AC service costs $200, and nipping any issues in the bud could mean avoiding emergency repairs in the dog days of summer.
Regularly replace filters: Consistently changing your filter helps your AC run more efficiently and keeps the air in your home cleaner. How often you replace a filter will depend on how thick it is, but most people have to replace filters between once a month and once every three months.
Great company! Price was competitive, technician showed up on time and completed the job (exterior electric Radon fan replacement) quickly. Would hire them again.
As usual with ECO, tech Jordan was outstanding, very professional, very knowledgeable, and very thorough with repairs made to tankless water heaters. Very highly recommend ECO!!!
Raven and crew does absolutely fantastic job. They are very professional if any concerns were to occur with any of her work she always took responsibility and finished out with a great job. I have worked with her business for a year and have always been satisfied. Very trusted business and...
I would recommend this company to anyone! He showed up on time, was friendly, completed a very difficult repair on our dryer vent cover, was responsive, and pricing was extremely fair and competitive. I would have him back to do any of our repairs or cleanings without hesitation!
Ace Fireplace Services' chimney sweep service is truly exceptional. They used advanced technology to ensure a thorough cleaning process, and my chimney has never looked better. I highly recommend their services.
The technician was very professional and friendly. He answered all my questions and was very thorough. He left the fireplace area very clean . He inspected from the roof and advised me as to other work that might need to be done. There was no pressure there. I was very satisfied with the...
Excellent experience with hiring Tether House to Mount our 77’ Samsung TV in our bedroom. Fast, friendly, and knowledgeable. Highly recommend.
On time, clean and finished fast. Windows seem sturdy and the finish is good. Caulking was done with no smudges. Would recommend.
Great job...edging and pre clean up went well with a great job with seal coat. Friendly, efficient and professional.
Good workers and they do a good job.
From average costs to expert advice, get all the answers you need to get your job done.

The cost of a new AC unit depends on the size and type. Our guide breaks down AC replacement cost factors so you can decide which option matches your budget.

A worn AC fan motor can cause your system to overheat. Budget for AC unit fan motor costs, including parts and labor, with this guide.

A clear AC drain line keeps your system at its best. Learn how to clean your AC drain line with household ingredients and tools you already have.

How long do air conditioner coils last? Find out the average lifespan, factors that impact it, signs it’s time to replace your coils, and more.

Is your AC constantly running? There are a few common culprits, including dirty components or loose wiring. Here’s how to identify and fix the problem.

When the temperature rises, you may wonder if it’s bad to keep turning the AC on and off. Find out the pros and cons of doing so and how to conserve energy.