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Window a/c unit installers in Castle Rock

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 Wild Water Plumbing Heating and Cooling
Wild Water Plumbing Heating and Cooling
7731 Dry Willow Way
5.00(
11
)
Approved Pro
Wild Water Plumbing Heating and Cooling
7731 Dry Willow Way
5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
863 local quotes requested

At Wild Water Plumbing, Heating and Cooling we provide free estimates with no trip fees. We're a locally owned small business, proudly staffed by fully licensed technicians. We look forward to serving you.

"Professional. Good at explaining and investigating. Good work. Fair prices."

David B on March 2025

At Wild Water Plumbing, Heating and Cooling we provide free estimates with no trip fees. We're a locally owned small business, proudly staffed by fully licensed technicians. We look forward to serving you.

"Professional. Good at explaining and investigating. Good work. Fair prices."

David B on March 2025


Avatar for Tipping Hat Plumbing, Heating & Electric
Tipping Hat Plumbing, Heating & Electric
608 Garrison St
3.90(
107
)
Approved Pro
Tipping Hat Plumbing, Heating & Electric
608 Garrison St
3.90(
107
)
Approved Pro
Customers say: Super punctual
2699 local quotes requested
19 years of experience

Here at Tipping Hat Plumbing, Heating & Electric our focus is Good Old Fashioned Service. Plumbing, Heating, Cooling, Drain Cleaning and Electric service that is done right, that will last and skillfully completed by one of our hard working, courteous service specialists.

"Very expensive. $600/hr labor cost. Just got a quote today for plumbing and electrical. 2 days of electrical work quoted for $10,000. 4 days of plumbing work quoted for $20,000 Cost of materials is for all work combined is probably $1,000. Roughly that makes $600/hr. That is simply outrageous."

Rudy Y on April 2024

Here at Tipping Hat Plumbing, Heating & Electric our focus is Good Old Fashioned Service. Plumbing, Heating, Cooling, Drain Cleaning and Electric service that is done right, that will last and skillfully completed by one of our hard working, courteous service specialists.

"Very expensive. $600/hr labor cost. Just got a quote today for plumbing and electrical. 2 days of electrical work quoted for $10,000. 4 days of plumbing work quoted for $20,000 Cost of materials is for all work combined is probably $1,000. Roughly that makes $600/hr. That is simply outrageous."

Rudy Y on April 2024


Avatar for Colorado Bear Heating & Air
Colorado Bear Heating & Air
2237 Deer Hollow Tr
5.00(
11
)
Approved Pro
Colorado Bear Heating & Air
2237 Deer Hollow Tr
5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

We specialize in all phases of heating and cooling services, installs, repairs, maintenance, and more! We are family. We are focused on the needs of our customer base & dedicated to providing our clients with an exceptional service experience, superior to other service providers in our marketplace. Our quick response time, strong communication skills, compassionate drive, and thoroughness sets us apart from other providers.

"they did an excellent job. were knowledgeable and professional."

Mansour R on December 2024

We specialize in all phases of heating and cooling services, installs, repairs, maintenance, and more! We are family. We are focused on the needs of our customer base & dedicated to providing our clients with an exceptional service experience, superior to other service providers in our marketplace. Our quick response time, strong communication skills, compassionate drive, and thoroughness sets us apart from other providers.

"they did an excellent job. were knowledgeable and professional."

Mansour R on December 2024


Avatar for Tuscan Electric Heating & Plumbing
Tuscan Electric Heating & Plumbing
4301 S. Federal Blvd
5.00(
12
)
Approved Pro
Tuscan Electric Heating & Plumbing
4301 S. Federal Blvd
5.00(
12
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1934 local quotes requested

At Tuscan Electric Heating & Plumbing, we take immense pride in being your trusted local family-owned business, dedicated to delivering excellence in home service. With a commitment to professionalism and a wealth of expertise accumulated, we're here to redefine your experience in electrical, heating, cooling, and plumbing solutions.

"Excellent work. They charged me a fair price and the work was done in a timely manner. I thought I might have needed some additional circuits installed and they told me that I only needed one additional circuit that needed to be installed. A couple of other companies quoted me a price that was twice as much without coming out to look at what needed to be done. Jim came out for the estimate and Jake performed the work. /i could not recommend Tuscan more highly."

steven g on January 2025

At Tuscan Electric Heating & Plumbing, we take immense pride in being your trusted local family-owned business, dedicated to delivering excellence in home service. With a commitment to professionalism and a wealth of expertise accumulated, we're here to redefine your experience in electrical, heating, cooling, and plumbing solutions.

"Excellent work. They charged me a fair price and the work was done in a timely manner. I thought I might have needed some additional circuits installed and they told me that I only needed one additional circuit that needed to be installed. A couple of other companies quoted me a price that was twice as much without coming out to look at what needed to be done. Jim came out for the estimate and Jake performed the work. /i could not recommend Tuscan more highly."

steven g on January 2025


Avatar for Peak Home Performance
Peak Home Performance
1125 N. Newport Road
4.08(
13
)
Approved Pro
Peak Home Performance
1125 N. Newport Road
4.08(
13
)
Approved Pro
Customers say: Quality work
771 local quotes requested
6 years of experience

Since day one, we’ve been dedicated to providing our community with a level of service in HVAC that just doesn’t currently exist. Over 30 years of experience. Their former experience of operating a successful HVAC company led to them opening Peak Home Performance with a passion and dedication unseen in our area.

"They were professional and helped us solve the problem."

Joy R on January 2025

Since day one, we’ve been dedicated to providing our community with a level of service in HVAC that just doesn’t currently exist. Over 30 years of experience. Their former experience of operating a successful HVAC company led to them opening Peak Home Performance with a passion and dedication unseen in our area.

"They were professional and helped us solve the problem."

Joy R on January 2025


Avatar for 100% Service Inc.
100% Service Inc.
4061 South Broadway
4.50(
8
)
Approved Pro
100% Service Inc.
4061 South Broadway
4.50(
8
)
Approved Pro
478 local quotes requested
29 years of experience

100% Service Inc is a full service heating, cooling, water heaters and piping repair Company. Heater = Boilers, furnaces, service and replacement cooling = air conditioning, evap. coolers. water heaters = service and replacement

"Top-notch service. I would highly recommend to anyone needing work done on the heating and air conditioner"

Tony C on June 2024

100% Service Inc is a full service heating, cooling, water heaters and piping repair Company. Heater = Boilers, furnaces, service and replacement cooling = air conditioning, evap. coolers. water heaters = service and replacement

"Top-notch service. I would highly recommend to anyone needing work done on the heating and air conditioner"

Tony C on June 2024


Avatar for TACTIHVAC LLC
TACTIHVAC LLC
6485 Lazy Stream Way
5.00(
5
)
Approved Pro
TACTIHVAC LLC
6485 Lazy Stream Way
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
404 local quotes requested

TactiHvac: Tactical Comfort, Mission Accomplished At TactiHvac, we don’t just fix heating and cooling systems—we’re on a mission to save your home from the perils of bad air. Based in Colorado Springs, Jesse Joseph and his crew of HVAC commandos specialize in precise diagnostics, tactical repairs, and flawless installations for residential heating and cooling systems. Think of us as the special forces of climate control: no air too dusty, no furnace too fried, and no AC too ancient to escape our expertise. Armed with 47 years of combined industry experience and a commitment to delivering top Residential HVAC equiptment like Rheem, Weather King and Sure Comfort systems; we don’t just bring the heat (or the chill); we bring peace of mind to you and your family, for decades to come. What makes us different? When the heat shuts off and things go bump in the night; We're the team that runs toward the sound of squeaky furnaces and suspicious noises in the basement and attics, not away from them. Whether it’s an AC add-on, a furnace swap, or a total system overhaul, TactiHvac operates with tactical precision and a practical approach for your family and your wallet. You'll get top-tier service without the runaround because we value your comfort—and your time. As proud supporters of our veterans, we’ve partnered with the American Warrior Initiative to replace furnaces for elderly and disabled vets. This isn’t just a job; it’s a chance to give back to the community we love. So, if your HVAC system is waving the white flag, call TactiHvac at (719) 425-3799. We’ll be there faster than you can say, “Why is my house so cold?"

"Jesse & Josh, Are very professional, they take the time to go over everything with you before starting the work. VETERAN friendly Company with very competitive rates. After trying several other BIG Companies here in town I chose TACTI HVAC and will choose them again. HIGHLY RECOMMEND!"

BIG SGT LLC Jonathon N on November 2024

TactiHvac: Tactical Comfort, Mission Accomplished At TactiHvac, we don’t just fix heating and cooling systems—we’re on a mission to save your home from the perils of bad air. Based in Colorado Springs, Jesse Joseph and his crew of HVAC commandos specialize in precise diagnostics, tactical repairs, and flawless installations for residential heating and cooling systems. Think of us as the special forces of climate control: no air too dusty, no furnace too fried, and no AC too ancient to escape our expertise. Armed with 47 years of combined industry experience and a commitment to delivering top Residential HVAC equiptment like Rheem, Weather King and Sure Comfort systems; we don’t just bring the heat (or the chill); we bring peace of mind to you and your family, for decades to come. What makes us different? When the heat shuts off and things go bump in the night; We're the team that runs toward the sound of squeaky furnaces and suspicious noises in the basement and attics, not away from them. Whether it’s an AC add-on, a furnace swap, or a total system overhaul, TactiHvac operates with tactical precision and a practical approach for your family and your wallet. You'll get top-tier service without the runaround because we value your comfort—and your time. As proud supporters of our veterans, we’ve partnered with the American Warrior Initiative to replace furnaces for elderly and disabled vets. This isn’t just a job; it’s a chance to give back to the community we love. So, if your HVAC system is waving the white flag, call TactiHvac at (719) 425-3799. We’ll be there faster than you can say, “Why is my house so cold?"

"Jesse & Josh, Are very professional, they take the time to go over everything with you before starting the work. VETERAN friendly Company with very competitive rates. After trying several other BIG Companies here in town I chose TACTI HVAC and will choose them again. HIGHLY RECOMMEND!"

BIG SGT LLC Jonathon N on November 2024


Avatar for Behold Heating & Cooling Services
Behold Heating & Cooling Services
9800 Mt Pyramid Ct #4040
4.92(
26
)
Approved Pro
Behold Heating & Cooling Services
9800 Mt Pyramid Ct #4040
4.92(
26
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
1405 local quotes requested

Behold the Difference! Every day we are invited into our customer’s homes. Into their safe place and sanctuary. Quite often this is in the midst of a concern or issue that needs to be fixed! With an extensive background that spans well beyond just the trades, we love to be different. In addition to decades of industry experience, we bring some secret sauce - we love to take all the time needed to help, to make sure you are comfortable, and to provide amazing solutions. Come BEHOLD the difference! "Unfortunately we do not service or intall swamp or evaporative coolers".

"Excellent, thorough, timely and cost effective"

Meredith F on April 2025

Behold the Difference! Every day we are invited into our customer’s homes. Into their safe place and sanctuary. Quite often this is in the midst of a concern or issue that needs to be fixed! With an extensive background that spans well beyond just the trades, we love to be different. In addition to decades of industry experience, we bring some secret sauce - we love to take all the time needed to help, to make sure you are comfortable, and to provide amazing solutions. Come BEHOLD the difference! "Unfortunately we do not service or intall swamp or evaporative coolers".

"Excellent, thorough, timely and cost effective"

Meredith F on April 2025


Avatar for High 5 Plumbing, Heating, Cooling & Electric
High 5 Plumbing, Heating, Cooling & Electric
15710 W COLFAX AVE
4.69(
75
)
Approved Pro
High 5 Plumbing, Heating, Cooling & Electric
15710 W COLFAX AVE
4.69(
75
)
Approved Pro
Customers say: Quick response
2994 local quotes requested
13 years of experience

If you have any plumbing, heating, cooling or electrical issues at all, contact the experts at High 5 today. We are highly experienced and extensively trained. Using state-of-the-art equipment and a comprehensive understanding of plumbing and HVAC, we handle all of your needs in a timely and professional manner. Whether you need to install, repair, or replace piping, unclog a toilet, replace your ceiling fan, repair an electrical box, install a new air conditioner, need furnace maintenance, or more, they can handle it quickly and efficiently. With High 5, you can count on their expert plumbers, electricians, and HVAC technicians to show up as at your home on time and ready to work. We are well-known among their customers and neighbors for our ethical and honest mode of operation. Many other companies take advantage of their customers’ lack of experience and provide low-quality services at exorbitant rates. At High 5, we've built our business based on honesty, integrity, quality work, and exceptional service at fair pricing. Because of these values, it has allowed us to employ the best of the best in our professional fields. Contact us today and schedule an in-home cost estimate for your plumbing, HVAC or electrical in the Denver area. We proudly offer a Senior Discount and Military Discount of 10% off up to $100.

"The project went smoothly, from the inititial call to setting the date and the actual work. The plumber was friendly and professional and showed up on time. He had all the required parts on his truck and completed the job within 30 minutes. The project rate ended up being in the ballpark of what I expected. It would have been nice to have some idea of the price before they showed up though. This seems to be an overall issue with Angi's list with 5+ vendors wanting to show up at you house before providing an estimate. It's probably the nature of the work..."

Matt B on August 2024

If you have any plumbing, heating, cooling or electrical issues at all, contact the experts at High 5 today. We are highly experienced and extensively trained. Using state-of-the-art equipment and a comprehensive understanding of plumbing and HVAC, we handle all of your needs in a timely and professional manner. Whether you need to install, repair, or replace piping, unclog a toilet, replace your ceiling fan, repair an electrical box, install a new air conditioner, need furnace maintenance, or more, they can handle it quickly and efficiently. With High 5, you can count on their expert plumbers, electricians, and HVAC technicians to show up as at your home on time and ready to work. We are well-known among their customers and neighbors for our ethical and honest mode of operation. Many other companies take advantage of their customers’ lack of experience and provide low-quality services at exorbitant rates. At High 5, we've built our business based on honesty, integrity, quality work, and exceptional service at fair pricing. Because of these values, it has allowed us to employ the best of the best in our professional fields. Contact us today and schedule an in-home cost estimate for your plumbing, HVAC or electrical in the Denver area. We proudly offer a Senior Discount and Military Discount of 10% off up to $100.

"The project went smoothly, from the inititial call to setting the date and the actual work. The plumber was friendly and professional and showed up on time. He had all the required parts on his truck and completed the job within 30 minutes. The project rate ended up being in the ballpark of what I expected. It would have been nice to have some idea of the price before they showed up though. This seems to be an overall issue with Angi's list with 5+ vendors wanting to show up at you house before providing an estimate. It's probably the nature of the work..."

Matt B on August 2024

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Showing 1-10 of 966

Window a/c unit installations FAQs

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 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.
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