Top-rated window a/c unit installers.

Get matched with top window a/c unit installers in your area

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.

Window a/c unit installers in Littleton

Cornell's Brother
8801 W Belleview Ave G203
New on HomeAdvisorNew on Angi
Approved Pro
Cornell's Brother
8801 W Belleview Ave G203
New on AngiNew on HomeAdvisor
Approved Pro
10 years of experience
Free onsite estimate

Cornell's Brothers is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 15 years of experience serving Lakewood, CO and surrounding areas. There is no job too big, or too small for our team. Call today...

Cornell's Brothers is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 15 years of experience serving Lakewood, CO and surrounding areas. There is no job too big, or too small for our team. Call today...


Avatar for Coal Creek Heat, LLC
Coal Creek Heat, LLC
30934 Skyline Drive
5.00(
4
)
Approved Pro
Coal Creek Heat, LLC
30934 Skyline Drive
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

We provide our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems, as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Devin was so professional and knowledgeable. Great company and service!! Highly recommend."

James M on May 2020

We provide our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems, as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"Devin was so professional and knowledgeable. Great company and service!! Highly recommend."

James M on May 2020


Avatar for My Sons Fences And Landscape Contractors LLC
My Sons Fences And Landscape Contractors LLC
679 S Reed Ct
5.00(
9
)
Approved Pro
My Sons Fences And Landscape Contractors LLC
679 S Reed Ct
5.00(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1224 local quotes requested

Is your current landscape losing its charm, or are you in search of the perfect landscaping idea to elevate your home’s aesthetics? Look no further because we are the Colorado Landscaping Company you want to handle your next landscaping project. Here at My Son’s Landscaping & Fencing, we are a team of experienced Colorado Landscaping experts specializing in breathing new life into outdoor spaces in Colorado. Our expertise covers landscape construction all types of fences, patios, decks, lawns, backyards, and gardens. Big or small projects we got you covered!

"I’m thoroughly impressed by the professionalism and work product of My Sons Fences and Landscape. They built me a gorgeous custom fence that has quickly held up against record snowfall and hurricane force winds. Ulises and his crew were a pleasure to work with - responsive, timely, great communication and follow-up, and excellent results. I will certainly hire them again for other projects. I highly recommend their services. I couldn’t be more pleased with how my fence turned out!!"

Nina P on April 2024

Is your current landscape losing its charm, or are you in search of the perfect landscaping idea to elevate your home’s aesthetics? Look no further because we are the Colorado Landscaping Company you want to handle your next landscaping project. Here at My Son’s Landscaping & Fencing, we are a team of experienced Colorado Landscaping experts specializing in breathing new life into outdoor spaces in Colorado. Our expertise covers landscape construction all types of fences, patios, decks, lawns, backyards, and gardens. Big or small projects we got you covered!

"I’m thoroughly impressed by the professionalism and work product of My Sons Fences and Landscape. They built me a gorgeous custom fence that has quickly held up against record snowfall and hurricane force winds. Ulises and his crew were a pleasure to work with - responsive, timely, great communication and follow-up, and excellent results. I will certainly hire them again for other projects. I highly recommend their services. I couldn’t be more pleased with how my fence turned out!!"

Nina P on April 2024


Avatar for Viking Inc. Heating, A/C & Misc. Plumbing, Inc.
Viking Inc. Heating, A/C & Misc. Plumbing, Inc.
3746 Lincoln Ave
4.70(
10
)
Approved Pro
Viking Inc. Heating, A/C & Misc. Plumbing, Inc.
3746 Lincoln Ave
4.70(
10
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
235 local quotes requested

Family owned & operated for over 35 yrs. Honest & reliable heating and A/C which includes repair and service of all brand furnaces, boilers and A/C. New installation of furnaces, boilers & A/C. Humidifiers, water heaters, air cleaners and misc. plumbing issues. Install new gas lines for adding stoves, driers etc.; New construction

"Viking had serviced my furnaces and air conditioners in the past. Price was a little high but work was satisfactory. This year, I called four times and used their web site over a six week period to try to schedule a service appointment for the air conditioners. Although I was always told their scheduler would get back to me they never did. A big waste of my time and past money trying to establish a service relationship I could count on. I gave them a "D": rather than an "F" as their call service at least answered all though that was it."

Bruce M on July 2020

Family owned & operated for over 35 yrs. Honest & reliable heating and A/C which includes repair and service of all brand furnaces, boilers and A/C. New installation of furnaces, boilers & A/C. Humidifiers, water heaters, air cleaners and misc. plumbing issues. Install new gas lines for adding stoves, driers etc.; New construction

"Viking had serviced my furnaces and air conditioners in the past. Price was a little high but work was satisfactory. This year, I called four times and used their web site over a six week period to try to schedule a service appointment for the air conditioners. Although I was always told their scheduler would get back to me they never did. A big waste of my time and past money trying to establish a service relationship I could count on. I gave them a "D": rather than an "F" as their call service at least answered all though that was it."

Bruce M on July 2020


Avatar for Handy Mountain Solutions llc
Handy Mountain Solutions llc
10220 City View Drive
5.00(
11
)
Approved Pro
Handy Mountain Solutions llc
10220 City View Drive
5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
110 local quotes requested

I have been helping friends and family preform basic repairs and upgrades to there homes including my own for over 20 years. With a background in Facilities Maintenance, Carpentry and fine wood working I have acquired vast range of valuable skills and take great pride in my work. If your looking for a Handy man that provides outstanding service and beautiful outcomes look no further.

"Jamen was prompt in returning my call for a quote and his prices were very reasonable for installing some ceiling fans. He was thorough and did a great job!"

Cat B on March 2024

I have been helping friends and family preform basic repairs and upgrades to there homes including my own for over 20 years. With a background in Facilities Maintenance, Carpentry and fine wood working I have acquired vast range of valuable skills and take great pride in my work. If your looking for a Handy man that provides outstanding service and beautiful outcomes look no further.

"Jamen was prompt in returning my call for a quote and his prices were very reasonable for installing some ceiling fans. He was thorough and did a great job!"

Cat B on March 2024


Avatar for Mendozas General Maintenance
Mendozas General Maintenance
5.00(
1
)
Approved Pro
Mendozas General Maintenance
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1074 local quotes requested

Mendoza’s is here to cater to your property projects including Deck Building/repair, bathroom remodels, general remodels, plumbing, concrete, indoor and outdoor painting, fencing, etc. We have provided quality and honest work for 15+ years and continue to impress customers and their needs. Mendoza’s is an honest business who will give you affordable prices but fair to my quality of work. I will provide knowledge and advise for your projects. You can contact Mendoza’s at 720-429-9432 and begin your projects today! Antonio Mendoza Owner

"If you have general handyman work that needs to be done, look no further than Mendoza’s General Maintenance. Antonio was efficient, kind, and was so helpful. He was also the most reasonably priced! I am keeping him in mind for future jobs."

Damaris G on May 2025

Mendoza’s is here to cater to your property projects including Deck Building/repair, bathroom remodels, general remodels, plumbing, concrete, indoor and outdoor painting, fencing, etc. We have provided quality and honest work for 15+ years and continue to impress customers and their needs. Mendoza’s is an honest business who will give you affordable prices but fair to my quality of work. I will provide knowledge and advise for your projects. You can contact Mendoza’s at 720-429-9432 and begin your projects today! Antonio Mendoza Owner

"If you have general handyman work that needs to be done, look no further than Mendoza’s General Maintenance. Antonio was efficient, kind, and was so helpful. He was also the most reasonably priced! I am keeping him in mind for future jobs."

Damaris G on May 2025


Tempcontrol
5943 West Alder Ave.
New on HomeAdvisorNew on Angi
Approved Pro
Tempcontrol
5943 West Alder Ave.
New on AngiNew on HomeAdvisor
Approved Pro
430 local quotes requested
26 years of experience

In Business Since 1999 Quality work, knowledgeable techs, and great prices. At Tempcontrol Heating & Air Conditioning, we pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

In Business Since 1999 Quality work, knowledgeable techs, and great prices. At Tempcontrol Heating & Air Conditioning, we pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!


Avatar for Otter HVAC Solutions
Otter HVAC Solutions
1607 Glen Bar Drive
5.00(
6
)
Approved Pro
Otter HVAC Solutions
1607 Glen Bar Drive
5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
497 local quotes requested

In Business Since 2024 Otter HVAC Solutions is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. How We Got Started I chose to work in this industry because Hi there— I’m Mitch Atwell, HVAC and Boiler Technician with over 15 years experience installing and repairing systems. I’m also an Eagle Scout! I’ve worked at all levels of the industry and can help you make the best decisions for your home. I’m here to help you keep the heat on, get some AC, and make your life more comfortable for a comfortable price. Please reach out with any questions!. We started in this industry in 2012. We describe our business as Family owned and operated

"Mitch had it all planned out and was in and out. We now have endless hot water!"

Brad l on February 2025

In Business Since 2024 Otter HVAC Solutions is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. How We Got Started I chose to work in this industry because Hi there— I’m Mitch Atwell, HVAC and Boiler Technician with over 15 years experience installing and repairing systems. I’m also an Eagle Scout! I’ve worked at all levels of the industry and can help you make the best decisions for your home. I’m here to help you keep the heat on, get some AC, and make your life more comfortable for a comfortable price. Please reach out with any questions!. We started in this industry in 2012. We describe our business as Family owned and operated

"Mitch had it all planned out and was in and out. We now have endless hot water!"

Brad l on February 2025


Avatar for Bond Handyman
Bond Handyman
19130 Breton Place
5.00(
5
)
Approved Pro
Bond Handyman
19130 Breton Place
5.00(
5
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
796 local quotes requested

BOND Handyman specializes in drywall installation, repairs, texture matching, and painting. With expertise in minor electrical and plumbing work, plus carpentry skills for home updates, we provide comprehensive home improvement solutions. With 5 years of experience, we deliver top-notch craftsmanship and reliable service. Our goal is to exceed your expectations with every project. Contact us at 719-460-9464 or email me at hadsdesigns@gmail.com for a free estimate and we will transform your space into whatever you can dream up!

"Jake did a great job. He was there when he said he would be, he cleaned up afterward and he did an amazing job installing the baseboards."

Elizabeth B on September 2024

BOND Handyman specializes in drywall installation, repairs, texture matching, and painting. With expertise in minor electrical and plumbing work, plus carpentry skills for home updates, we provide comprehensive home improvement solutions. With 5 years of experience, we deliver top-notch craftsmanship and reliable service. Our goal is to exceed your expectations with every project. Contact us at 719-460-9464 or email me at hadsdesigns@gmail.com for a free estimate and we will transform your space into whatever you can dream up!

"Jake did a great job. He was there when he said he would be, he cleaned up afterward and he did an amazing job installing the baseboards."

Elizabeth B on September 2024


Avatar for Emporia Home Services
Emporia Home Services
7901 Shaffer Pkwy
5.00(
16
)
Approved Pro
Emporia Home Services
7901 Shaffer Pkwy
5.00(
16
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1595 local quotes requested

Heating, Cooling & Electrical Services Emporia is committed to keeping you comfortable in your own home with expert service, quality parts and equipment, as well as unique technology designed and assembled with care by our own engineers right here in Colorado. Emporia proudly serves Littleton, Lakewood, and the Denver Metro area with quality Heating, Ventilation, and Air Conditioning (HVAC) solutions. Our goal is to ensure that every customer receives best-of-class service and reliable products, all at the lowest possible price we can offer.

"Techs arrived on time as scheduled. The job was completed in the estimated time and to my satisfaction."

Michael M on March 2023

Heating, Cooling & Electrical Services Emporia is committed to keeping you comfortable in your own home with expert service, quality parts and equipment, as well as unique technology designed and assembled with care by our own engineers right here in Colorado. Emporia proudly serves Littleton, Lakewood, and the Denver Metro area with quality Heating, Ventilation, and Air Conditioning (HVAC) solutions. Our goal is to ensure that every customer receives best-of-class service and reliable products, all at the lowest possible price we can offer.

"Techs arrived on time as scheduled. The job was completed in the estimated time and to my satisfaction."

Michael M on March 2023

...
Showing 1-10 of 975

FAQs for window a/c unit installation projects in Littleton, CO

Running a window air conditioner to cool a small room often costs less than $4 per day, making it cheaper than central air for single-room cooling. However, central air might be more efficient if you're using multiple window units or need to cool a space larger than 1,000 square feet. Choosing the right size AC is crucial—a unit that's too big or small can waste energy and increase costs.

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 Littleton, CO 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.
Technician services outside AC units and generator
Apr 30, 2025
Apr 30, 2025
Budget for HVAC maintenance costs based on factors such as unit age, time of year, repair task, warranties, condition, service plans, and more.
professional installing home humidifier system
Apr 29, 2025
Apr 29, 2025
Budget for whole-house dehumidifier costs based on factors such as unit type, capacity, efficiency, ductwork, drainage, labor, permits, and more.
Technician performing annual ac tune up
Apr 29, 2025
Apr 29, 2025
Budget for AC evaporator coil replacement costs based on factors such as your AC unit’s tonnage, coil style, professional labor rates, and more.
home air conditioner being recharged with freon
Apr 26, 2025
Apr 26, 2025
Need an AC Recharge? Here’s how much it costs, what factors affect cost, and what to expect.
A boy changing thermostat’s temperature using a smartphone
Apr 25, 2025
Apr 25, 2025
Budget for AC coil cleaning costs based on factors such as cleaning frequency, coil type, cleaning method, accessibility, ongoing maintenance, and more.
Technician checking AC condenser
Apr 22, 2025
Apr 22, 2025
Budget for the cost to replace an AC condenser based on factors such as unit size, repair type, brand, accessibility, labor, and more.
Share project details to get started.