Top-rated window a/c unit installers.

Get matched with top window a/c unit installers in Festus, MO

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Window a/c unit installers in Festus

Avatar for Liberty Heating & Cooling

Liberty Heating & Cooling

3236 Ridgetop View Drive
4.80(
41
)
•Approved Pro

Liberty Heating & Cooling

3236 Ridgetop View Drive
4.80(
41
)
•Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
562 local quotes requested

We pride our business on excellent workmanship done by our top notch employees who are the best in the industry. Our prices are hard to beat especially for the quality you will receive every time you choose us. We also specialize in having excellent customer service and do not believe in being pushy at all with our customers. Our reviews will testify to these statements about our business ethics. Our technicians have been specially trained to handle the sophisticated high-efficiency systems currently on the market today. These include all air conditioners, heat pump, furnaces, boilers and tankless water heaters.

"Sam was very courteous and did great work. New Years Day and he came out and did the job quickly. You ask for better service."

Jason P on January 2025

We pride our business on excellent workmanship done by our top notch employees who are the best in the industry. Our prices are hard to beat especially for the quality you will receive every time you choose us. We also specialize in having excellent customer service and do not believe in being pushy at all with our customers. Our reviews will testify to these statements about our business ethics. Our technicians have been specially trained to handle the sophisticated high-efficiency systems currently on the market today. These include all air conditioners, heat pump, furnaces, boilers and tankless water heaters.

"Sam was very courteous and did great work. New Years Day and he came out and did the job quickly. You ask for better service."

Jason P on January 2025

Avatar for Willys Handyman Service

Willys Handyman Service

85 Parkway Drive
4.75(
8
)
•Approved Pro

Willys Handyman Service

85 Parkway Drive
4.75(
8
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
70 local quotes requested

We offer a variety of handyman services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today! I Offer all window and door replacement and/or repair This also includes screen doors. I also offer minor electrical and plumbing repairs. I do a job by job Review on if it’s something I I am comfortable with or qualified for.

"Great. Showed up on time and kept me informed of progress. Finished product was good."

Robin R on June 2025

We offer a variety of handyman services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today! I Offer all window and door replacement and/or repair This also includes screen doors. I also offer minor electrical and plumbing repairs. I do a job by job Review on if it’s something I I am comfortable with or qualified for.

"Great. Showed up on time and kept me informed of progress. Finished product was good."

Robin R on June 2025

Perfect Air

503 Warne St
4.67(
6
)
•Approved Pro

Perfect Air

503 Warne St
4.67(
6
)
•Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
444 local quotes requested

Founded in 1982. Team members that are drug tested and background checked insuring that the people in your home are safe. We specialize in repairing and replacing residential heating and air conditioning systems. "Fixed Right or It's Free" Techs available Sat & Sun call for appointment.

Founded in 1982. Team members that are drug tested and background checked insuring that the people in your home are safe. We specialize in repairing and replacing residential heating and air conditioning systems. "Fixed Right or It's Free" Techs available Sat & Sun call for appointment.

MISSOURI VALLEY RENEWABLE ENERGY

2378 BERKEMEYER RD
No reviews yet

MISSOURI VALLEY RENEWABLE ENERGY

2378 BERKEMEYER RD
No reviews yet
23 years of experience

Auto Transport - United Freight Of America

1844 N Nob Hill Rd
4.84(
920
)

Auto Transport - United Freight Of America

1844 N Nob Hill Rd
4.84(
920
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

Homepro Repair

7119 Michigan Ave.
No reviews yet

Homepro Repair

7119 Michigan Ave.
No reviews yet
26 years of experience

Homepro is a home repair/handyman business that is privately owned and operated in st.louis, There are no other employees besides myself but i have a stable of experienced tradesmen that i hire from time to time to help out as the need arises. There is no charge for us to come out and bid on a job or give an estimate. Minimum charge for any service call where work is performed is $70.00

Homepro is a home repair/handyman business that is privately owned and operated in st.louis, There are no other employees besides myself but i have a stable of experienced tradesmen that i hire from time to time to help out as the need arises. There is no charge for us to come out and bid on a job or give an estimate. Minimum charge for any service call where work is performed is $70.00

Aspen Refrigeration

11764 Westline Industrial Dr
4.00(
1
)

Aspen Refrigeration

11764 Westline Industrial Dr
4.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Aspen Refrigeration

Aspen Refrigeration

CHC Construction LLC

450 Scottsdale Drive
5.00(
1
)

CHC Construction LLC

450 Scottsdale Drive
5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

I am an independent contractor that is here to help you with your home remodeling needs. I provide free estimates and timely service. I have over 15 years contracting experience and would be happy to provide you with a portfolio of my work. I recently started my own independent business to allow me to take my talent to the next level and work as an independent contractor.

I am an independent contractor that is here to help you with your home remodeling needs. I provide free estimates and timely service. I have over 15 years contracting experience and would be happy to provide you with a portfolio of my work. I recently started my own independent business to allow me to take my talent to the next level and work as an independent contractor.

Men 4ever Working LLC.

13 Rolling Hills Dr.
No reviews yet

Men 4ever Working LLC.

13 Rolling Hills Dr.
No reviews yet
14 years of experience

My business consist of Home Improvement,Hauling,Cleaning Services,Lawn Services, Computer Services,& Custom Designed T-Shirts , Signs And more. 24/7 Services Calls or emails at anytime.

My business consist of Home Improvement,Hauling,Cleaning Services,Lawn Services, Computer Services,& Custom Designed T-Shirts , Signs And more. 24/7 Services Calls or emails at anytime.

CASTELLO PAINTING AND REMODELING

1414 AVION RIDGE DRIVE
5.00(
11
)

CASTELLO PAINTING AND REMODELING

1414 AVION RIDGE DRIVE
5.00(
11
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We have three trustworthy workers. We give free estimates. Small jobs can be paid upon completion, larger job are set up into payment schedule by length of job.

We have three trustworthy workers. We give free estimates. Small jobs can be paid upon completion, larger job are set up into payment schedule by length of job.

...
Showing 1-10 of 728
FAQs for window a/c unit installation projects in Festus, MO

Window AC units can use a significant amount of energy. These units use about 12 to 17 kilowatt-hours per day, significantly more than a refrigerator's one to 1.5 kilowatt-hours per day. To keep your energy costs down, run your window AC only when necessary, keep doors closed to contain the cool air, regularly clean filters and coils, and seal any gaps around the unit to prevent cold air from escaping.

Inexpensive air conditioner units are often not worth it. Low-cost products from popular brands like General Electric, LG, Whirlpool, or Frigidaire may be a reasonable investment. However, putting a small, budget-friendly unit in a large room wastes energy and shortens the life span of the AC since it has to draw more power and work much harder to cool the space. The unit will consume more energy and stress the motor and other internal parts, resulting in early breakdown and costly repairs.

The best deals on window AC units come during the fall when businesses slash prices to clear out old inventory. You can also speak with your local AC installer, who may get you a good deal on a window AC unit since they have access to trade pricing. You can also watch for discontinued products and flash sales in your area.

Window AC repair costs between $110 and $390, with most people paying around $250. Parts cost between $2 and $150, with the rest going toward labor, at around $30 per hour. The occasional one-off repair or a routine AC tuneup cost $75 to $200. Servicing can keep your AC running in good condition for several more years before you need to pay for a replacement unit.

Window AC units last eight to 10 years when installed and maintained correctly. High-quality models last up to 20 years with proper care and routine maintenance. The unit’s longevity depends on its construction quality, regular cleaning, and electrical safety inspections. Keeping the filters and coils clean and addressing minor repairs promptly extends its effective performance and ensures reliable cooling.

The Festus, MO homeowners’ guide to window a/c unit installations

From average costs to expert advice, get all the answers you need to get your job done.

See all articles
  • Technician repairing air conditioner
    After Hours Home Improvement, LLC - Author/Reviewer
    •

    HomeAdvisor's Air Conditioning Repair Cost Guide gives the average price to fix an AC unit in your house. Find the cost of recharging the AC or fixing a freon leak. Get the price to repair or replace a compressor, handler, thermostat, duct, and more.

  • An AC system in the backyard of a house

    This guide explores the average cost of replacing your AC compressor and all of the factors that go into it, including size, type, and brand.

  • Detail of a HVAC system outside a brick house

    The cost of replacing an AC unit fan motor depends on warranties, labor, season, and more. This cost guide covers everything you need to know about this HVAC part.