Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in Unity, ME

Enter your zip and get matched with up to 5 pros

Find Heating and air conditioning pros in Unity

Avatar for Dave's Mechanical Maintenance

Dave's Mechanical Maintenance

4.81(
39
)
Approved Pro

Dave's Mechanical Maintenance

4.81(
39
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
15 years of experience

Dave's Mechanical Maintenance is your locally owned leading Heat Pump specialist serving Penobscot and the surround counties in Maine. We are a full service Ductless heat pump company with over 40 years of experience with the ability to handle all your comfort needs. We pride ourselves in the quality of our work, and we strive to exceed all your expectations in craftsmanship, professionalism, and customer service. Check out our work on our website at Davesmm.com. Email [email protected] or call/text us today at 827-2118 for all your heat pump installation and repair needs!

"Excellent detailed perfect installation"

Aimen H on May 2024

Dave's Mechanical Maintenance is your locally owned leading Heat Pump specialist serving Penobscot and the surround counties in Maine. We are a full service Ductless heat pump company with over 40 years of experience with the ability to handle all your comfort needs. We pride ourselves in the quality of our work, and we strive to exceed all your expectations in craftsmanship, professionalism, and customer service. Check out our work on our website at Davesmm.com. Email [email protected] or call/text us today at 827-2118 for all your heat pump installation and repair needs!

"Excellent detailed perfect installation"

Aimen H on May 2024


Avatar for GrayBridge

GrayBridge

5.00(
14
)
Approved Pro

GrayBridge

5.00(
14
)
Approved Pro
Super Service Award
10 years of experience
Free onsite estimate

GrayBridge 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.

"Went above and beyond did fabulous work. Very satisfied."

Stephen L on November 2025

GrayBridge 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.

"Went above and beyond did fabulous work. Very satisfied."

Stephen L on November 2025


Avatar for MAC Heat Pumps

MAC Heat Pumps

4.93(
22
)
Approved Pro

MAC Heat Pumps

4.93(
22
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 years of experience

We are a locally-owned and operated, full-service ductless mini-split heat pump company. Our goal is to provide Mainers with affordable heating and cooling solutions. Contact us and we'll do a complimentary, no-obligation evaluation of your space. If a heat pump is right for you, we will be there through every step: system design, installation, rebates, and service - with a long-term commitment to you as our customer. Unlike some companies that are only interested in the sale and nothing more, at MAC Heat Pumps we're here for the life of your heat pump.

"Was nice to hire experienced labor for once. Good experience."

Brian S on January 2024

We are a locally-owned and operated, full-service ductless mini-split heat pump company. Our goal is to provide Mainers with affordable heating and cooling solutions. Contact us and we'll do a complimentary, no-obligation evaluation of your space. If a heat pump is right for you, we will be there through every step: system design, installation, rebates, and service - with a long-term commitment to you as our customer. Unlike some companies that are only interested in the sale and nothing more, at MAC Heat Pumps we're here for the life of your heat pump.

"Was nice to hire experienced labor for once. Good experience."

Brian S on January 2024


Avatar for Able Trades

Able Trades

5.00(
8
)
Approved Pro

Able Trades

5.00(
8
)
Approved Pro
20 years of experience
Free onsite estimate

At Able Trades, we take pride in delivering high-quality workmanship and treating every customer with the respect they deserve. Based in Maine, we specialize in the installation of high-efficiency heat pump systems that keep your home comfortable year-round. Whether you're looking to heat and cool a single bedroom, a family room, an apartment, or your entire home, we offer tailored solutions to meet your needs. Our experienced team will guide you through the entire process—from a free on-site consultation to exploring the best installation options for your space and budget. As a certified Efficiency Maine Residential Registered Vendor, we can help you take advantage of valuable rebate programs offered through Efficiency Maine with rebates up to $3,000 per unit! While we don’t provide the rebates directly, we’re happy to handle the paperwork and submission process on your behalf to make it as easy as possible. Let us help you make your home more comfortable and energy-efficient.

"Matthew and his crew were extremely professional and efficient. The work was completed on the day scheduled and they cleaned up after themselves. Heat pump works great and they were able to direct me to an Effeciency Maine site where I received a substantial discount on the installation, equipment and cleaning plan!! Great company to do business with and will recommend them to family and friends. I will definitely not hesitate to use this company again if the need should arise!!"

Vicki C on July 2025

At Able Trades, we take pride in delivering high-quality workmanship and treating every customer with the respect they deserve. Based in Maine, we specialize in the installation of high-efficiency heat pump systems that keep your home comfortable year-round. Whether you're looking to heat and cool a single bedroom, a family room, an apartment, or your entire home, we offer tailored solutions to meet your needs. Our experienced team will guide you through the entire process—from a free on-site consultation to exploring the best installation options for your space and budget. As a certified Efficiency Maine Residential Registered Vendor, we can help you take advantage of valuable rebate programs offered through Efficiency Maine with rebates up to $3,000 per unit! While we don’t provide the rebates directly, we’re happy to handle the paperwork and submission process on your behalf to make it as easy as possible. Let us help you make your home more comfortable and energy-efficient.

"Matthew and his crew were extremely professional and efficient. The work was completed on the day scheduled and they cleaned up after themselves. Heat pump works great and they were able to direct me to an Effeciency Maine site where I received a substantial discount on the installation, equipment and cleaning plan!! Great company to do business with and will recommend them to family and friends. I will definitely not hesitate to use this company again if the need should arise!!"

Vicki C on July 2025


Avatar for B&P Handyman Services

B&P Handyman Services

5.00(
6
)
Approved Pro

B&P Handyman Services

5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

Looking for reliable handyman services in Maine? Look no further than B&P Handyman Services. Our skilled team of professionals is dedicated to delivering top-notch results for all your handyman needs. From demo to remodeling we do it all. Please call or click for an estimate today!

"Fantastic! Everyone was professional. The crew showed up on time each day. They were hard working, pleasant and performed excellent work. They addressed all of my concerns. I am very pleased with the finished sunroom renovations. I will be hiring them for my next project!"

Paul M on September 2024

Looking for reliable handyman services in Maine? Look no further than B&P Handyman Services. Our skilled team of professionals is dedicated to delivering top-notch results for all your handyman needs. From demo to remodeling we do it all. Please call or click for an estimate today!

"Fantastic! Everyone was professional. The crew showed up on time each day. They were hard working, pleasant and performed excellent work. They addressed all of my concerns. I am very pleased with the finished sunroom renovations. I will be hiring them for my next project!"

Paul M on September 2024


Avatar for Baker Electric and Sons

Baker Electric and Sons

4.81(
13
)
Approved Pro

Baker Electric and Sons

4.81(
13
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
10 years of experience

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 the start to the 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. $100.00 Service Fee.

"Guys were professional and knew their stuff. Arrived on time,too. Solved my issue in 15 minutes. 'Was completely unprepared for the over $500 bill! My regular electrician was too busy but this was a fire hazard which demanded immediate attention. Wouldn't book with Baker's company again just because of outrageous price."

Cheryl L on July 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 the start to the 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. $100.00 Service Fee.

"Guys were professional and knew their stuff. Arrived on time,too. Solved my issue in 15 minutes. 'Was completely unprepared for the over $500 bill! My regular electrician was too busy but this was a fire hazard which demanded immediate attention. Wouldn't book with Baker's company again just because of outrageous price."

Cheryl L on July 2025


Evergreen Plumbing Solutions

5.00(
3
)
Approved Pro

Evergreen Plumbing Solutions

5.00(
3
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

Evergreen Plumbing 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.

"What a pleasure doing business with Evergreen Plumbing! Caleb was very helpful and a good communicator on the telephone! Was able to send Zack to my home the same day! He diagnosed my disaster and fixed the leaks under 2 sinks! Quality of life issue that we’d been nursing along for a while! Wonderful to have access to a company that gives prompt friendly excellent service in our area! Highly recommend!! Thank you! "

Tim G on January 2025

Evergreen Plumbing 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.

"What a pleasure doing business with Evergreen Plumbing! Caleb was very helpful and a good communicator on the telephone! Was able to send Zack to my home the same day! He diagnosed my disaster and fixed the leaks under 2 sinks! Quality of life issue that we’d been nursing along for a while! Wonderful to have access to a company that gives prompt friendly excellent service in our area! Highly recommend!! Thank you! "

Tim G on January 2025


McLardy Electric

5.00(
1
)
Approved Pro

McLardy Electric

5.00(
1
)
Approved Pro
15 years of experience
Free onsite estimate

With nearly 30 years experience, McLardy Electric proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

"McLardy was very professional and knowledgable and personable he was someone I could talk to easily. "

John W on September 2025

With nearly 30 years experience, McLardy Electric proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

"McLardy was very professional and knowledgable and personable he was someone I could talk to easily. "

John W on September 2025


On The Hill Plumbing LLC

New on AngiNew on Angi
Approved Pro

On The Hill Plumbing LLC

New on AngiNew on Angi
Approved Pro
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 the start to the 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.

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 the start to the 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.


"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

...
Showing 1-10 of 169
Heating and Air Conditioning questions, answered by experts

AC capacitors last between five and 15 years, with an average lifespan of 10 years. Most people only need to replace a capacitor once during an AC unit’s lifetime. You don’t need to replace the capacitor unless something is wrong with it, which an HVAC repair pro can diagnose. 

Here’s the cost formula to find out how much it’ll cost you to run a window air conditioner in your home:  Watts * (hours used) / 1,000 * (Local kWh) = daily cost of running a window unit. If you need help calculating the cost of running your window AC unit, consult an AC repair or installation pro for an accurate estimate.

Split systems are the most common type of HVAC system. Split systems have two main units: an indoor one and an outdoor one. These units work together to pull in air, heat or cool it, and distribute it throughout your home. Other popular types of HVAC systems include hybrid systems and packaged heating and air systems.

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers, or ASHRAE, sets the standard guidelines for air changes per hour in homes and businesses. The International Residential Code, or IRC, also sets ACH requirements for residences and bases those requirements off of ASHRAE standards plus climate specifics related to your location.

A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn’t very accurate, and a dedicated pro wouldn’t use it for your home. If you talk to a pro who won’t or can’t perform a proper Manual J calculation, consider hiring someone more thorough.

The Unity, ME 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"