Air Conditioner

An air conditioner is a cooling system that removes heat and humidity from your home, keeping indoor spaces comfortable during warm months. Whether you need routine maintenance, a repair, or a full system replacement, understanding your options helps you make smart decisions. From central units to ductless mini-splits, Angi connects you with local pros and resources to keep your home cool all season.
Air Conditioner Service Articles and Advice
You may wonder how to quiet a noisy air conditioner that’s rattling away and disrupting your peace. Learn tips on how to restore peace and quiet to your cool home.
Your AC can overheat for several reasons, such as lack of maintenance and clogged air filters. Learn why your air conditioner is overheating.
Even when you're sweating up a storm on a hot day, your AC should keep its cool. Here's what to do when condensation on your AC signals larger problems.
Have you ever wondered how AC works to make cold air that it pushes through your home? Follow this guide to learn air conditioning basics.
Learn how to save money on air conditioning costs this summer by following this handy guide all about your favorite cooling system.
A new HVAC system can increase your home’s value and decrease future energy bills, which are benefits that attract potential buyers.
Not sure what kind of upkeep your air conditioner needs? Make sure you’re covering all of your bases with this air conditioner maintenance checklist.
When determining your AC coil cleaning cost, you’ll need to factor in the type, cleaning method, and more. Our cost guide will show you what to expect.
Find HVAC Pros near you
Share your project details and we’ll match you with up to 3 available pros near you.
Common Air Conditioner Service Questions

You can buy a new AC capacitor through most big-box home improvement stores, from an HVAC contractor, or from the manufacturer. Use the model number of your air conditioning unit to make sure you purchase the right part for your unit. Also, keep in mind that the cost of this type of part can vary significantly depending on who you purchase it from, so shop around to get the best price.

While you’re busy swapping out that old compressor, now is a great time to have your furnace cleaned and serviced , especially if your home is older and your heating system is as old as your AC unit. Likewise, it’s a good idea to clean your air ducts to ensure air flows properly through the house.

An air conditioner’s watt usage depends on multiple factors, including the type of AC unit, its size, and how often you use it. With that said, most central air conditioners consume between 3,000 and 3,500 watts. Meanwhile, window AC units use 900 to 1,400 watts, and portable air conditioners consume 2,900 to 4,100 watts.

You can protect your air conditioner in the winter by turning off the power at the thermostat and performing routine HVAC maintenance in the spring. Regular maintenance, cleaning, and repair of your AC unit helps protect it and extend its life span. If you have a window AC unit, remove it from the window and store it in a dry place during the winter. Window units cannot withstand freezing temperatures. Keeping them in your window also allows cold air to seep into your home.

Deciding whether to replace just the AC coil or the entire system depends on the age of your unit and the overall cost. Replacing a coil is less expensive than a full system replacement, but it can still be a pricey repair. If your HVAC system is relatively new and still under warranty, or if the replacement cost is significantly lower than a new system, replacing the coil can be a worthwhile investment that restores efficiency and extends the unit's life. However, for older systems (nearing the end of their 10-15 year lifespan) or those with extensive damage, it is often more cost-effective to replace the entire AC unit. Mismatched coils in an older system can lead to inefficiency and future breakdowns, so a full replacement ensures optimal performance and avoids further costly repairs.