How Much Does It Cost To Run A Window Air Conditioner?
Got 2 minutes? Use our quick guide to calculate how much a window air conditioner could cost you to run. With simple tips to get the most out of your AC.
Read MoreIn these hot summer months, nothing could be better than that blast of cool air when you walk back in the door.
But nothing could be worse than an outsized electricity bill—or, worse, an air conditioner repair bill. Is it safe to leave the air conditioner running all day? Is it expensive?
Because of the energy it takes to get started, an air conditioner can be more efficient when left on, even when we leave for errands. Only when you can leave it off for hours, like during the work day or at night, is it always a better choice to turn it off. Otherwise, just adjust the thermostat!
Although we all like easy answers, the truth is there are many factors that influence the cost of running your air conditioner. Some of these are obvious, such as the price of electricity or the outside temperature. Others are trickier to measure. Whether your home is well-insulated, how large of an area you’re trying to cool, how the rooms are laid out (and whether doors are open)—even where the thermometer is can affect how your air conditioner runs! See our helpful guide here for all you need to know about what influences the cost, as well as some helpful calculators specific to window air conditioners.
There are a lot of online sources that tell us that running our AC all day every day can get expensive. Not only does it start to wear out the unit, but it can drive up electricity bills. Some of these lists speak in the most dramatic terms, making us feel like running the air conditioner is the worst thing we can do. After reading that kind of article, we might want to just throw out the whole thing!
But the truth is summer is hot and it’s important to our health that we have relief from the heat.
It’s impossible to get work done in a hot room. When it comes to whether or not to run your air conditioner – you’re worth it!
Although running the air conditioner is more expensive than leaving the house sweltering, a hospital bill costs you all of those savings and then some: at $3000-$7000, a trip to the hospital costs so much that you could run a window unit for a century. So while we might not want to run our AC on the first warm day of spring, there really is no other choice when the dog days of summer roll around again.
Since we know we should use our air conditioner when it gets hot, the question we have to answer is when and how long should your air conditioner run?
First, we need to distinguish between active running and just being on.
Your air conditioner can be set to cool the house to 70 degrees all day, but if your house never gets higher than 68, it won’t spend very much time being active. Meanwhile, if your air conditioner is set to 70 but it can’t cool the house below 80, it will overstress itself chugging along endlessly.
The first thing to recognize is the limits of your air conditioner. Most air conditioners can cool a room or house by 20 degrees Fahrenheit (see our article on how cold to set your AC). On very hot days, this might mean setting your thermostat higher than you would like. Of course, every degree difference in your AC setting can save up to 5% of the electricity it consumes, so you should already consider leaving it a little higher than you otherwise might. After all, there are plenty of other good ways to keep cool without relying on the AC!
How do you know if your air conditioner is working too hard? The general rule is that your air conditioner should run for 15-20 minutes at a time.
If you don’t feel any change in that time, either your air conditioner is a poor fit for your home or there may be a problem with it. When you set the unit to cool down to a lower temperature, it might run longer, and that’s okay once in a while! However, if it regularly takes a half hour or more to make a difference, make sure it’s working properly and consider looking into a bigger one.
Surprisingly, the opposite problem also exists. It’s very possible to have an air conditioner that’s too big. An outsized unit will cool your house down, and it will do it very quickly. However, rather than running for twenty minutes every once in a while, this big unit will run less than ten minutes at a time all the time. Constantly turning on and off is a process known as short cycling. Short cycling doesn’t only lead to an unsteady temperature, but it causes power spikes and inefficient electricity usage. You’ll find yourself paying a lot more in the long run.
An air conditioner running too long or too short of a cycle time may warrant a professional look.
Coming home to an icy blast in the height of summer is the best part of the working day. But is it sensible to leave the AC on for eight hours or more while we’re out and about? In terms of simple energy consumption, it’s simply better to leave it off. Of course, that’s not the whole story. There are a few variables to keep in mind.
Although it’s never free to run the AC, it can be more efficient to keep it running more often than you’d think.
Take advantage of long hours out and of nighttime chill to let it rest, but don’t be afraid of your air conditioner. Especially on hot, busy days, we should all take the opportunity to chill out.
If this information helped you out, please consider taking a look at the related articles below!
Thanks for reading, and stay cool out there!