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
Window a/c unit installers in Waltham
Chill Zone HVAC 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.
"Chill zone came to install 2 mini splits. They did a fantastic job and left the place clean when they installed it. Our place has been running great ever since!"
Sam R on August 2023
Chill Zone HVAC 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.
"Chill zone came to install 2 mini splits. They did a fantastic job and left the place clean when they installed it. Our place has been running great ever since!"
Sam R on August 2023
CRM OnDemand Handy-Man Services is a proud division of CRM Construction, LLC, a trusted name in home improvement and construction for nearly 20 years. Based in the Groton and Concord area, we provide reliable, high-quality handyman services tailored to meet your home maintenance and repair needs. From small fixes to larger projects, our team specializes in a wide range of services, including carpentry, painting, light plumbing, electrical repairs, installations, and general home maintenance. Backed by the expertise and reputation of CRM Construction, we bring the same level of professionalism and attention to detail to every job, no matter the size. Whether you need help with quick fixes, seasonal home upkeep, or ongoing maintenance, CRM OnDemand Handy-Man Services is your trusted partner. Contact us today for fast, dependable, and affordable handyman solutions delivered with care and precision!
"Chris and his team were outstanding. The project was a full renovation of our 1745 historic home. The project was quite complex but was completed on time, on budget, and of the highest quality. We lived in the home during the renovation and Chris and team were extraordinarily polite, courteous, and very clean. I can't say enough great things about CRM Construction."
Matthew M on January 2024
CRM OnDemand Handy-Man Services is a proud division of CRM Construction, LLC, a trusted name in home improvement and construction for nearly 20 years. Based in the Groton and Concord area, we provide reliable, high-quality handyman services tailored to meet your home maintenance and repair needs. From small fixes to larger projects, our team specializes in a wide range of services, including carpentry, painting, light plumbing, electrical repairs, installations, and general home maintenance. Backed by the expertise and reputation of CRM Construction, we bring the same level of professionalism and attention to detail to every job, no matter the size. Whether you need help with quick fixes, seasonal home upkeep, or ongoing maintenance, CRM OnDemand Handy-Man Services is your trusted partner. Contact us today for fast, dependable, and affordable handyman solutions delivered with care and precision!
"Chris and his team were outstanding. The project was a full renovation of our 1745 historic home. The project was quite complex but was completed on time, on budget, and of the highest quality. We lived in the home during the renovation and Chris and team were extraordinarily polite, courteous, and very clean. I can't say enough great things about CRM Construction."
Matthew M on January 2024
Here at Terry's Home Improvement, we are dedicated to providing you with exceptional customer service. We specialize in providing you with all the different options available to you for your remodeling needs. We are a family owned and operated business, with over 40 years in the construction industry. So stop by today and set up your free no obligation estimate.
"I hired him through Angi, and was really happy with his job and knowledge. He has a lot of experience and know what he is doing. Will fully recommend him and hire him again if I need to do another job at my house."
Andres E on October 2022
Here at Terry's Home Improvement, we are dedicated to providing you with exceptional customer service. We specialize in providing you with all the different options available to you for your remodeling needs. We are a family owned and operated business, with over 40 years in the construction industry. So stop by today and set up your free no obligation estimate.
"I hired him through Angi, and was really happy with his job and knowledge. He has a lot of experience and know what he is doing. Will fully recommend him and hire him again if I need to do another job at my house."
Andres E on October 2022
ThermOil, Inc. offers an extensive range of Heating, Cooling, and Plumbing services to clients throughout Eastern Massachusetts, and has earned a reputation for professional, highly–trained staff; quality products, and constant dedication to our founding principle: Do It Well – Do It Once. We are committed to bringing our clients exceptional, cost–effective solutions that both reduce start–up costs and trim expenses over the life of our products. And we’re proud to have a long history with industry leaders in the heating, cooling and plumbing field: manufacturers who share our focus on providing the latest, most effective technology to our clients. Through these trusted vendors, we provide quality products that will serve our customers for years to come — we guarantee it. Angelo Pistoftzian, Owner and President, established ThermOil in 1983 to meet a rapidly growing need for a reliable provider of heating oil and boiler services in Watertown and the surrounding area. With Bachelors and Masters degrees in Chemical Engineering from Northeastern University, and years of practical experience, Angelo combines an in–depth understanding of fundamental principles with a hands-on approach to daily operations. Angelo oversees every project from start to finish, and makes personal visits to work sites a priority. Over the last 40 years, ThermOil has expanded from a local heating oil business into a regional incorporation offering Heating, Cooling, and Plumbing services to clients throughout Eastern Massachusetts. Our motto is also our business model, and underscores our promise to provide Total Customer Satisfaction.
"We have used Thermoil services many times, including plumbing work, water heater installation and ductless cooling and heating for our first home. When we moved to iur new home, they delivered oil on a schedule based on our consumption. And recently, Thermoil installed heat pump for our second floor and ductless heating/cooling for our first floor. They are fair, punctual and professional. We recommended them to friends and family and will absolutely use their services. They pickup the phone when we need them the most and take care of our family like their own."
Fred T on March 2023
ThermOil, Inc. offers an extensive range of Heating, Cooling, and Plumbing services to clients throughout Eastern Massachusetts, and has earned a reputation for professional, highly–trained staff; quality products, and constant dedication to our founding principle: Do It Well – Do It Once. We are committed to bringing our clients exceptional, cost–effective solutions that both reduce start–up costs and trim expenses over the life of our products. And we’re proud to have a long history with industry leaders in the heating, cooling and plumbing field: manufacturers who share our focus on providing the latest, most effective technology to our clients. Through these trusted vendors, we provide quality products that will serve our customers for years to come — we guarantee it. Angelo Pistoftzian, Owner and President, established ThermOil in 1983 to meet a rapidly growing need for a reliable provider of heating oil and boiler services in Watertown and the surrounding area. With Bachelors and Masters degrees in Chemical Engineering from Northeastern University, and years of practical experience, Angelo combines an in–depth understanding of fundamental principles with a hands-on approach to daily operations. Angelo oversees every project from start to finish, and makes personal visits to work sites a priority. Over the last 40 years, ThermOil has expanded from a local heating oil business into a regional incorporation offering Heating, Cooling, and Plumbing services to clients throughout Eastern Massachusetts. Our motto is also our business model, and underscores our promise to provide Total Customer Satisfaction.
"We have used Thermoil services many times, including plumbing work, water heater installation and ductless cooling and heating for our first home. When we moved to iur new home, they delivered oil on a schedule based on our consumption. And recently, Thermoil installed heat pump for our second floor and ductless heating/cooling for our first floor. They are fair, punctual and professional. We recommended them to friends and family and will absolutely use their services. They pickup the phone when we need them the most and take care of our family like their own."
Fred T on March 2023
At Total Comfort Mechanical we offer expert, full service Heating, Air Conditioning, & HVAC, Installation, Indoor Air Quality, Preventive maintenance, emergency repair, repairs & more. Most Brands carried, including: Bryant, American Standard, Goodman, Mitsubishi, Weil McLain, Burnham, Aprilaire, Bradford White & Olsen
"Five Star Service! Total Comfort Mechanical planned, designed, and installed a Mitsubishi Intelli-Heat system at our home in Melrose. They seamlessly combined our existing gas furnace and ducted system with an efficient Mitsubishi heat pump to create a hybrid heating and AC system. The team exceeded our expectations. They are honest, respectful, and always maintained a positive and professional attitude. They did everything they said they would do and even went above and beyond. The technicians are skilled and dedicated, often working long hours to ensure the job was done right. We were impressed by their commitment to keeping our work sites clean at the end of each day. The planning was meticulous, the communication was excellent, and the final delivery exceeded our expectations. We can confidently recommend Total Comfort Mechanical for any heating and air conditioning projects. Thank you, Wendell and team, for making our home more comfortable and efficient!"
FRITZ B on March 2025
At Total Comfort Mechanical we offer expert, full service Heating, Air Conditioning, & HVAC, Installation, Indoor Air Quality, Preventive maintenance, emergency repair, repairs & more. Most Brands carried, including: Bryant, American Standard, Goodman, Mitsubishi, Weil McLain, Burnham, Aprilaire, Bradford White & Olsen
"Five Star Service! Total Comfort Mechanical planned, designed, and installed a Mitsubishi Intelli-Heat system at our home in Melrose. They seamlessly combined our existing gas furnace and ducted system with an efficient Mitsubishi heat pump to create a hybrid heating and AC system. The team exceeded our expectations. They are honest, respectful, and always maintained a positive and professional attitude. They did everything they said they would do and even went above and beyond. The technicians are skilled and dedicated, often working long hours to ensure the job was done right. We were impressed by their commitment to keeping our work sites clean at the end of each day. The planning was meticulous, the communication was excellent, and the final delivery exceeded our expectations. We can confidently recommend Total Comfort Mechanical for any heating and air conditioning projects. Thank you, Wendell and team, for making our home more comfortable and efficient!"
FRITZ B on March 2025
Our customers are our number one priority and for this reason, we use only the best quality equipment, such as Carrier, Rheem and Concord, plus we offer extended warranties for these various systems. We pledge to see that every customer is fully-satisfied and cared for, that is why we offer 24-hour service during the winter for heating systems. We are a Mass save participant and offer financing and rebate support. *Now offering 1 year of free maintenance with any furnace or air conditioner installation /or/ free air duct cleaning with installation of a furnace*
"Timely and very fair price"
Ken F on September 2024
Our customers are our number one priority and for this reason, we use only the best quality equipment, such as Carrier, Rheem and Concord, plus we offer extended warranties for these various systems. We pledge to see that every customer is fully-satisfied and cared for, that is why we offer 24-hour service during the winter for heating systems. We are a Mass save participant and offer financing and rebate support. *Now offering 1 year of free maintenance with any furnace or air conditioner installation /or/ free air duct cleaning with installation of a furnace*
"Timely and very fair price"
Ken F on September 2024
We offer a 10% labor discount for new customers, plus for senior citizens and military veterans at all times. Although our work schedule is Monday thru Friday 7:00am to 3:00pm, we offer 24hr emergency service and free estimates at any time. Our quotes are locked in prices, but if we complete the work in less time, the cost of the work becomes less.
"We had mold that another company removed. Todd and Dave at Booth Home repair were very professional during the estimate phase and pointed out a few areas the other three contractors did not see. They were punctual, friendly and had a reasonable quote. They started when they said they would, and treated our house as if it were their own. We are more than pleased with their finished work and would recommend them highly."
Fred E on October 2024
We offer a 10% labor discount for new customers, plus for senior citizens and military veterans at all times. Although our work schedule is Monday thru Friday 7:00am to 3:00pm, we offer 24hr emergency service and free estimates at any time. Our quotes are locked in prices, but if we complete the work in less time, the cost of the work becomes less.
"We had mold that another company removed. Todd and Dave at Booth Home repair were very professional during the estimate phase and pointed out a few areas the other three contractors did not see. They were punctual, friendly and had a reasonable quote. They started when they said they would, and treated our house as if it were their own. We are more than pleased with their finished work and would recommend them highly."
Fred E on October 2024
At Accurate Baker Elman we strive to provide prompt, professional quality service to our customers, suppliers and builders as well as encouraging the personal and professional growth of our employees.Accurate Heat-Air Services, Inc is a Certified Trane Comfort Specialist requiring us to be held to the highest performance standards in the industry.Trane Comfort Specialist are highly trained heating, air conditioning and air quality professionals who can transform indoor air like no one else. We are consistently rated 90% or higher in customer satisfaction surveys, and take great pride in exceeding every customer expectation. We pride ourselves on our Professionalism, Quality Service, Promptness, Excellant Customer Relations,and Highly Skilled and Trained Technicians. Our Sales Department provides FREE in home estimates, Friendly qualified professionals,Ease in helping you select the comfort system that best fits your needs and your budget and Customized Quotes. Accurate Heat-Air Services, Inc services the following counties in Massachusetts,Norfolk, Plymouth, Middlesex,Bristol and Worcester. we offer both Commercial and residential service and installations. We also offer Service Agreements.
"Very well, Frank Fitch quickly diagnosed the problem and gave me a quote for repairs and expertly made the repairs. Re-establishing the proper pressure and making the boiler ready to go. Felt like I had expert service and a fair price."
Stephen W on January 2025
At Accurate Baker Elman we strive to provide prompt, professional quality service to our customers, suppliers and builders as well as encouraging the personal and professional growth of our employees.Accurate Heat-Air Services, Inc is a Certified Trane Comfort Specialist requiring us to be held to the highest performance standards in the industry.Trane Comfort Specialist are highly trained heating, air conditioning and air quality professionals who can transform indoor air like no one else. We are consistently rated 90% or higher in customer satisfaction surveys, and take great pride in exceeding every customer expectation. We pride ourselves on our Professionalism, Quality Service, Promptness, Excellant Customer Relations,and Highly Skilled and Trained Technicians. Our Sales Department provides FREE in home estimates, Friendly qualified professionals,Ease in helping you select the comfort system that best fits your needs and your budget and Customized Quotes. Accurate Heat-Air Services, Inc services the following counties in Massachusetts,Norfolk, Plymouth, Middlesex,Bristol and Worcester. we offer both Commercial and residential service and installations. We also offer Service Agreements.
"Very well, Frank Fitch quickly diagnosed the problem and gave me a quote for repairs and expertly made the repairs. Re-establishing the proper pressure and making the boiler ready to go. Felt like I had expert service and a fair price."
Stephen W on January 2025
Our team of experts is ready to tackle all your home projects with precision and professionalism. We have the knowledge and experience to get the job done right. Contact us today for top-notch service you can trust.
Our team of experts is ready to tackle all your home projects with precision and professionalism. We have the knowledge and experience to get the job done right. Contact us today for top-notch service you can trust.
Heritage Home Service is proud to serve residents from Northeast Massachusetts. We are the area’s premier home services provider and for 35+ years, we’ve brought the Heritage touch to homes throughout the state.
"Good communication to let me know when the technician was expected to arrive. Technician was knowledgeable and took the time to answer questions. Overall, happy with the experience."
Steven F on November 2024
Heritage Home Service is proud to serve residents from Northeast Massachusetts. We are the area’s premier home services provider and for 35+ years, we’ve brought the Heritage touch to homes throughout the state.
"Good communication to let me know when the technician was expected to arrive. Technician was knowledgeable and took the time to answer questions. Overall, happy with the experience."
Steven F on November 2024
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.
- Birmingham
- Phoenix
- Tucson
- Fresno
- Long Beach
- Los Angeles
- Modesto
- Sacramento
- San Diego
- San Francisco
- San Jose
- Denver
- Hartford
- Washington DC
- Fort Lauderdale
- Jacksonville
- Miami
- Orlando
- Tampa
- Atlanta
- Chicago
- Indianapolis
- Louisville
- New Orleans
- Baltimore
- Boston
- Detroit
- Grand Rapids
- Minneapolis
- Saint Paul
- Kansas City
- Saint Louis
- Las Vegas
- Albany
- New York
- Asheville
- Charlotte
- Greensboro
- Raleigh
- Winston Salem
- Cincinnati
- Cleveland
- Columbus
- Oklahoma City
- Portland
- Harrisburg
- Philadelphia
- Pittsburgh
- Providence
- Memphis
- Nashville
- Austin
- Dallas
- El Paso
- Fort Worth
- Houston
- San Antonio
- Salt Lake City
- Norfolk
- Richmond
- Virginia Beach
- Seattle
- Madison
- Milwaukee
Get our Angi-powered app
