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TRUSTED BY HARVARD, MA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon198
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Harvard

Avatar for Phalan Construction & The Handyman

Phalan Construction & The Handyman

4.84(
291
)
Approved Pro

Phalan Construction & The Handyman

4.84(
291
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
37 years of experience

Thank you for your interest in Phalan Construction! Winner of the Angies List Super Service award 2011, 12, 13, 14, 15 and 2016. Please Contact Me by email at [email protected] or through the contact link at my website www.phalanconstruction.com. Include pictures and a detailed work list for best response. Please understand, I typically work by myself and if I am unable to respond to your email request or phone call within a reasonable time, it is due to prescheduled work. I am interested in your project, and if your to do list is still undone, please re-contact me at a later time. Thanks again, Bob Phalan

"The work was done thoughtfully and expeditiously"

Nate B on September 2025

Thank you for your interest in Phalan Construction! Winner of the Angies List Super Service award 2011, 12, 13, 14, 15 and 2016. Please Contact Me by email at [email protected] or through the contact link at my website www.phalanconstruction.com. Include pictures and a detailed work list for best response. Please understand, I typically work by myself and if I am unable to respond to your email request or phone call within a reasonable time, it is due to prescheduled work. I am interested in your project, and if your to do list is still undone, please re-contact me at a later time. Thanks again, Bob Phalan

"The work was done thoughtfully and expeditiously"

Nate B on September 2025


Avatar for D Day Plumbing

D Day Plumbing

4.96(
38
)
Approved Pro

D Day Plumbing

4.96(
38
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 years of experience

- Closely follow the average True Cost Rate furnished on the Homeowners section of Home Advisor for labor costs - Show up on time and give up front estimates - Focus on service work and limited multi-day projects so my schedule remains fluid - Advocate on the customer's behalf shopping for best prices on quality materials and best practices to get jobs done to code at the best rate possible

"We had an issue with a Dry Well periodically backing up. Damian and the D Day Plumbing team were very professional and knowledgeable and provided an estimate with a couple different options and their related costs. They installed a new utility sink, sink pump, and needed piping and valves with tie ins to the main septic. They made improvement above and beyond the initial job breakdown, all the while staying within budget. I will certainly consider them again for any future work. Thank you Damian and the D Day Plumbing Team for a job very done!"

Jim K on July 2024

- Closely follow the average True Cost Rate furnished on the Homeowners section of Home Advisor for labor costs - Show up on time and give up front estimates - Focus on service work and limited multi-day projects so my schedule remains fluid - Advocate on the customer's behalf shopping for best prices on quality materials and best practices to get jobs done to code at the best rate possible

"We had an issue with a Dry Well periodically backing up. Damian and the D Day Plumbing team were very professional and knowledgeable and provided an estimate with a couple different options and their related costs. They installed a new utility sink, sink pump, and needed piping and valves with tie ins to the main septic. They made improvement above and beyond the initial job breakdown, all the while staying within budget. I will certainly consider them again for any future work. Thank you Damian and the D Day Plumbing Team for a job very done!"

Jim K on July 2024


Avatar for NETR Inc

NETR Inc

4.79(
72
)
Approved Pro

NETR Inc

4.79(
72
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
36 years of experience

For emergency services, please call 781-933-6387. N.E.T.R., Inc. is here to help homeowners install the best heating and cooling systems that fits their needs. Since 1989, we’ve installed heating and cooling systems in Boston and its surrounding areas, tackling tough problems that our clients face. Our goal is to ensure our clients have energy efficient, quiet, reliable systems so they can live their lives to the fullest both at home and at work. Our dedication to our customers’ needs is what drives us each and every day. Our approach to temperature control and comfort has helped us become one of the most respected names in heating, cooling, and refrigeration in New England

"Before installing a mini-split, the sales person told me that I'd need to cut down an interior shelf to a specific height. I paid a handyman $400 to do exactly what the sales person instructed. Later on, N.E.T.R. came and did the installation; however, AFTER the installation, a technician told me that they hadn't accounted for the vent opening and closing and that the shelf would need to be further cut down. As you can imagine, this type of service is rather ridiculous. If they knew that the shelf would need further cutting, they should have NOT installed the unit. I have called N.E.T.R. six (6) times in three weeks, and no one has called me back about this issue. After paying for the unit and for a handyman, it's ridiculous that I have AC that is compromised because no one with the company thought to properly measure the space so that the work by the handyman could be done once. At this point, I'd like for N.E.T.R. to take care of this for me."

Linda O on June 2025

For emergency services, please call 781-933-6387. N.E.T.R., Inc. is here to help homeowners install the best heating and cooling systems that fits their needs. Since 1989, we’ve installed heating and cooling systems in Boston and its surrounding areas, tackling tough problems that our clients face. Our goal is to ensure our clients have energy efficient, quiet, reliable systems so they can live their lives to the fullest both at home and at work. Our dedication to our customers’ needs is what drives us each and every day. Our approach to temperature control and comfort has helped us become one of the most respected names in heating, cooling, and refrigeration in New England

"Before installing a mini-split, the sales person told me that I'd need to cut down an interior shelf to a specific height. I paid a handyman $400 to do exactly what the sales person instructed. Later on, N.E.T.R. came and did the installation; however, AFTER the installation, a technician told me that they hadn't accounted for the vent opening and closing and that the shelf would need to be further cut down. As you can imagine, this type of service is rather ridiculous. If they knew that the shelf would need further cutting, they should have NOT installed the unit. I have called N.E.T.R. six (6) times in three weeks, and no one has called me back about this issue. After paying for the unit and for a handyman, it's ridiculous that I have AC that is compromised because no one with the company thought to properly measure the space so that the work by the handyman could be done once. At this point, I'd like for N.E.T.R. to take care of this for me."

Linda O on June 2025


Avatar for Sila Heating, Cooling, Plumbing and Electrical

Sila Heating, Cooling, Plumbing and Electrical

4.54(
5,210
)
Approved Pro

Sila Heating, Cooling, Plumbing and Electrical

4.54(
5,210
)
Approved Pro
Customers say: Super punctual
36 years of experience
Free onsite estimate

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"Great, as always. Sila is outstanding. We have a service contract with them for our furnace and AC and they keep them in tip-top shape. And when we have an urgent or emergency situation (heating, cooling, plumbing, electrical), they're who we call."

Jonathan P on November 2025

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"Great, as always. Sila is outstanding. We have a service contract with them for our furnace and AC and they keep them in tip-top shape. And when we have an urgent or emergency situation (heating, cooling, plumbing, electrical), they're who we call."

Jonathan P on November 2025


Avatar for Druziako HVAC Inc

Druziako HVAC Inc

4.84(
140
)
Approved Pro

Druziako HVAC Inc

4.84(
140
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
35 years of experience

Since 1990, we’ve proudly served our community as a trusted, family-run HVAC company focused on quality, reliability, and honest service. With over three decades of experience, we specialize in the installation, replacement, and service of top heating and cooling brands including Carrier, Bryant, and Rheem. Our certified technicians take the time to size your system properly, install it the right way, and make sure you understand your new equipment. We stand behind our work with industry-leading manufacturer warranties—up to 10 years on many systems—and dependable local support you can count on long after the install is complete. Whether you need a high-efficiency furnace, central AC, heat pump, or a complete system upgrade, we deliver comfort solutions designed to last.

"Timely and very fair price"

Ken F on September 2024

Since 1990, we’ve proudly served our community as a trusted, family-run HVAC company focused on quality, reliability, and honest service. With over three decades of experience, we specialize in the installation, replacement, and service of top heating and cooling brands including Carrier, Bryant, and Rheem. Our certified technicians take the time to size your system properly, install it the right way, and make sure you understand your new equipment. We stand behind our work with industry-leading manufacturer warranties—up to 10 years on many systems—and dependable local support you can count on long after the install is complete. Whether you need a high-efficiency furnace, central AC, heat pump, or a complete system upgrade, we deliver comfort solutions designed to last.

"Timely and very fair price"

Ken F on September 2024


Avatar for Precision Plumbing & HVAC, LLC

Precision Plumbing & HVAC, LLC

5.00(
23
)
Approved Pro

Precision Plumbing & HVAC, LLC

5.00(
23
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 years of experience

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! Book with us online or feel free to give us a call today!

"Marcin was very professional and attentive. He was great at communicating and was very quick to respond. They removed an old hot water tank and installed the new tankless system. I would highly recommend his services. Looking forward to working with them again in the future!"

Joan-Ellen D on March 2023

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! Book with us online or feel free to give us a call today!

"Marcin was very professional and attentive. He was great at communicating and was very quick to respond. They removed an old hot water tank and installed the new tankless system. I would highly recommend his services. Looking forward to working with them again in the future!"

Joan-Ellen D on March 2023


Avatar for Mead Handyman Service, LLC

Mead Handyman Service, LLC

5.00(
22
)
Approved Pro

Mead Handyman Service, LLC

5.00(
22
)
Approved Pro
Super Service Award
Customers say: Quick response
10 years of experience
Free onsite estimate

Welcome to Mead Handyman Service, LLC. We've been serving the local area to provide quality work at an affordable rate. There is no job too big or too small. We cover all handyman services including, but not limited to, interior painting, exterior painting, laminate flooring, vinyl flooring, ceramic tile flooring, ceramic tile, drywall repair, drywall install, deck repairs, deck staining, power washing, lawn care, junk removal, and more!

"Very easy to communicate;Fast and well done job."

Wanda C on December 2025

Welcome to Mead Handyman Service, LLC. We've been serving the local area to provide quality work at an affordable rate. There is no job too big or too small. We cover all handyman services including, but not limited to, interior painting, exterior painting, laminate flooring, vinyl flooring, ceramic tile flooring, ceramic tile, drywall repair, drywall install, deck repairs, deck staining, power washing, lawn care, junk removal, and more!

"Very easy to communicate;Fast and well done job."

Wanda C on December 2025


BWalsh

4.94(
31
)
Approved Pro

BWalsh

4.94(
31
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

Looking for top-notch plastering services in Boston? Look no further! Our skilled team offers all types of finishes, from smooth to textured. With a focus on quality work, we provide free estimates. Contact us today!

"You can rely on this man for all your home improvement needs; his quality is exceptional. He is reasonable as far as price."

Minnie K on April 2025

Looking for top-notch plastering services in Boston? Look no further! Our skilled team offers all types of finishes, from smooth to textured. With a focus on quality work, we provide free estimates. Contact us today!

"You can rely on this man for all your home improvement needs; his quality is exceptional. He is reasonable as far as price."

Minnie K on April 2025


Avatar for Wotton Heating

Wotton Heating

4.95(
22
)
Approved Pro

Wotton Heating

4.95(
22
)
Approved Pro
Super Service Award
Customers say: True professional
19 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Quick quote, quicker response to a needed situation. And job was done in one day. Updates throughout the day. Highly recommended"

DANIEL C on March 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Quick quote, quicker response to a needed situation. And job was done in one day. Updates throughout the day. Highly recommended"

DANIEL C on March 2025


Avatar for Mr. Handyman of Central MetroWest

Mr. Handyman of Central MetroWest

4.58(
187
)
Approved Pro

Mr. Handyman of Central MetroWest

4.58(
187
)
Approved Pro
Customers say: Super punctual
29 years of experience
Warranties offered

Welcome to Mr. Handyman of Central MetroWest where professional, safe, reliable handyman service for your entire "To Do" list is just one call away. That's why local residents choose our professional handymen, who specialize in all major and minor home repairs over an independent handyman. Additional DBAs - AA Mr Handyman, Mr Handyman, Handyman Enterprises Inc. Additional email - [email protected]. Subs used for plumbing, electrical, heating & air conditioning.

"The employees at Mr. Handyman always go the extra step to help their customers. When planning the work, they present so many great ideas to help you figure out exactly what you want. They work with your timeline and your budget for the best result possible."

Kathleen O on October 2025

Welcome to Mr. Handyman of Central MetroWest where professional, safe, reliable handyman service for your entire "To Do" list is just one call away. That's why local residents choose our professional handymen, who specialize in all major and minor home repairs over an independent handyman. Additional DBAs - AA Mr Handyman, Mr Handyman, Handyman Enterprises Inc. Additional email - [email protected]. Subs used for plumbing, electrical, heating & air conditioning.

"The employees at Mr. Handyman always go the extra step to help their customers. When planning the work, they present so many great ideas to help you figure out exactly what you want. They work with your timeline and your budget for the best result possible."

Kathleen O on October 2025

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Heating and Air Conditioning questions, answered by experts

No. Evaporator coils are designed to work with specific refrigerant types, and they are rated by what kinds of refrigerant they use. It’s indicated with an “R” code. It’s important to match your evaporator coil and refrigerant or your system will not work properly. An AC technician can tell you what type of refrigerant your system needs and what evaporator coils will work with it.

If your drain line is clogged, your AC might stop cooling, shut down, or refuse to turn on at all. Otherwise, you might see your AC leaking water, find standing water or water damage near the unit, or notice a musty smell coming out of your air conditioner or vents.

Yes, you can build a deck over your outdoor HVAC unit, but you need to leave at least 5 feet of vertical clearance above the unit. If you don’t want your deck to be that high off the ground, you could build a floating deck in another part of your yard—again, as long as you leave at least 4 feet of horizontal space between the deck and your AC unit.

Running a window air conditioner unit costs about $0.06 to $0.88 per hour. Choosing the correct size air conditioner can help it run more efficiently.

The outdoor portions of air conditioners are designed to weather the rain, so you don’t need to worry about it. An awning or roof will help protect them from snow or falling debris, which can do more damage. This is true of both window AC and outdoor units for larger systems.

The Harvard, MA homeowners’ guide to heating and air conditioning services

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

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"