Window Air Conditioner

A window air conditioner is a self-contained cooling unit designed to fit snugly into a standard window frame, offering an affordable way to beat the heat in individual rooms. From selecting the right BTU capacity for your space to proper installation and seasonal maintenance, there's a lot to consider. Angi helps you find the right pros and resources to keep your home cool and comfortable.

Related to Window Air Conditioner Service

Window Air Conditioner Service Articles and Advice
Barbara Bellesi Zito  •  Apr 10, 2026
How to Secure a Window AC Unit for a Snug, Cool Fit
Learning how to secure a window AC unit will avoid personal injury and damage to your home. It will also protect against theft and break-ins.
Angi  •  Apr 6, 2026
How Much Does Window AC Unit Installation Cost? [2026 Data]
Discover the true window AC unit installation cost to learn about labor, permits, and ways to save on your window AC project.
Lawrence Bonk  •  Apr 5, 2026
How to Install an Air Conditioner in 5 Breezy Steps
Want to keep cool during those harsh summer months, but you don’t have a central HVAC system? Follow these steps on how to install an air conditioner in your window.
Ben Kissam  •  Apr 4, 2026
How to Clean Your Window AC Unit in 8 Simple Steps
Cleaning your window AC unit keeps it running smoothly and can help you save on cooling bills. Just follow these eight simple steps to learn how to clean your window AC unit.
Barbara Bellesi Zito  •  Mar 19, 2026
Here’s Who to Hire to Clean and Repair a Window AC Unit
If your window AC needs some TLC, learn who to hire to clean and repair window AC units. Check out what you can do as a DIYer and what’s best left to a pro.
Veronica Sparks  •  Mar 19, 2026
Who Can Install a Window AC Unit? Your Hiring Guide for AC Installation
Who can install a window AC unit? It may seem like an easy task, but having the right professional install your new unit comes with peace of mind.
Veronica Sparks  •  Mar 19, 2026
Who Fixes Window AC Units? Your Guide to Hiring the Right Pro
Who fixes window AC units? Your comfort is paramount, and we dig into what you need to know about hiring the right pro for your air conditioning repair needs.
Lawrence Bonk  •  Mar 19, 2026
Seasonal Window AC Maintenance Checklists
Keep your window AC running smoothly with this comprehensive maintenance checklist.
Find HVAC Pros near you
Share your project details and we’ll match you with up to 3 available pros near you.
Common Window Air Conditioner Service Questions

A window AC unit is not completely silent. You’ll hear the sound of air blowing, and if you put your ear right up next to the unit, you may hear a slight hiss or gurgle as the refrigerant flows through the system. That said, if your system is making a running water sound, a loud banging sound, a grinding sound, or physically vibrating, you may be facing an issue or malfunction with your AC unit.

Not only do window units require venting to the outdoors, but the same goes for every type of air conditioner. Heated air has to go somewhere and if you vent anywhere but the outside, you are basically wasting money as your home will heat over time and not cool down. Portable AC units feature a tube that connects to the outside and central units include ducts.

To make the most out of your AC, consider implementing the following best practices: 

  • Choose the right size AC for your home to ensure your unit runs as efficiently as possible.

  • Choose a window with shade, as direct sunlight can cause your AC unit to overheat. 

  • Clean or replace the filter at least every two months. 

  • Inspect the AC’s fan and straighten it if necessary. 

  • Discontinue use immediately if you suspect a malfunction, as running the AC while broken can lead to significant issues. 

  • Turn off (or adjust the temperature) when you leave the house.

Water can damage any part of your home from the roof down to the basement. The type and extent of the damage factors heavily into the overall cost of water damage restoration. Some of the most common types of water damage repairs include:

  • Roof repair: $1,100

  • Ceiling repair: $450–$1,600

  • Basement repair and restoration: $500–$2,800

  • Drywall repair: $300–$850

  • Floor and hardwood repair: $200–$550

  • Bathroom fixture repair: $85–$800

  • Leaky plumbing or burst pipe repair: $350–$4,000

  • Mold restoration and removal: $2,225

  • Sump pump installation: $1,200

Window air conditioners typically last eight to 10 years, though some last slightly shorter or longer, depending on quality and maintenance. While AC units become worn down with time, you can extend the lifespan of your window AC by investing in a quality system and having your AC properly and regularly maintained.