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Q: Does a frozen AC unit affect indoor air quality?

• <div><p>Yes, a frozen AC unit can affect your indoor air quality since the reduced airflow won't be as effective at removing air pollutants, like dust and other allergens. Additionally, ice around the unit can create excess moisture, leading to mold and mildew that can damage your home if you don&rsquo;t catch it early.</p></div>

Q: Are all HVAC Schrader valves the same?

• <div><p>As mentioned above, not all HVAC Schrader valves are necessarily the same. While the valve core and pin or spring size on Schrader valves used for HVAC are generally similar, the valves are not all universal and interchangeable. The size of Schrader valves varies depending on whether it's used in an air conditioner, bicycle tire, or motor vehicle tire.</p></div>

Q: Can a power outage damage your air conditioner?

• <div><p>A power outage can damage your air conditioner, just like a power surge can damage any electrical device or appliance. In most cases, your circuit breaker or built-in surge protection on your AC unit protects your AC and just needs a reset. But in other cases, it might be that your AC compressor or capacitor was blown during the power surge. You&rsquo;ll need to have an HVAC professional repair or replace any AC parts. </p></div>

Q: Is AC coil cleaning worth it?

• <div><p>Yes, AC coil cleaning is definitely worth it. Cleaning your AC coils ensures your AC unit will function efficiently for the long term. Dirty and grimy AC coils make your unit work harder to cool your home, resulting in higher electric bills. Additionally, having your coils professionally cleaned regularly will reduce the possibility of extensive <a href="https://www.angi.com/articles/ac-service-cost.htm">maintenance and repair costs</a>. </p></div>

Q: Do mini-splits use more electricity than window units?

• <div><p>Window ACs use 500 to 1,400 watts per hour of electricity, while mini-splits use 500 to 700 watts per hour. However, if you need to cool multiple zones in your house, your mini-split can use as much as 2,000 watts per hour. How often you run your system will impact how much electricity you use (and how much you pay per month). </p></div>

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Verified Reviews for Heating And Air Conditioning Service pros in Sumner, ME

*The Angi rating for Heating And Air Conditioning Service companies in Sumner, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Sumner, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on June 30, 2026

Reviewed in June 2026
Josh was very helpful with cleaning and fixing my heat pump. I called him and he came out the next day. He knew what he was talking about and answered all of my questions. The service was great and I got a good price. Thank you.
Northwoods HVAC
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Reviewed in July 2025
Worked hard in the very hot and humid conditions. Very personable and gave me great advice on how to avoid problems in the future.
RM Septic
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Reviewed in June 2025
They were super helpful and the staff was so nice I recommend Able Trades to everyone they installed 2 heat pumps in my home and they are amazing iam so thankfull
Able Trades
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Reviewed in March 2025
The way to go. Future Homes is reliable and great at their craft. Dan and Ryan were a pleasure to conduct business with and were very knowledgeable. Their crew was top of the line, hard workers. They built my place from the ground up. Energy efficient is the way to go! Radiant heat added...
Future Homes USA, Inc.
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Reviewed in February 2024
Northeast heating and cooling was Great to work with and got the job done in a timely fashion and at a great price
NorthEast Heating and Cooling
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Reviewed in December 2023
Joe and his crew were very respectful of my home and they were able repair my heat pump when 2 other companies said that the entire system needed to be replaced. Thank You Comfort Air!
Comfort Air Systems
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Reviewed in October 2023
Derek was prompt, professional, and was able to also service my furnace in addition to the heat pumps. I would most definitely recommend him and will use him again in the future.
D & M Heating
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Reviewed in October 2023
It went very well. Ryan is very knowledgeable and was able to resolve my furnace issue. I will recommend HVAC Solutions 207, LLC for your heating and furnace issues anytime
B&P Handyman Services
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Reviewed in October 2023
My furnace issue was resolved accurately well. I will recommend this company for your heating and air conditioner problems anytime.
HVAC Solutions 207, LLC
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Reviewed in May 2023
Heat pump works great, install went smooth.
Russell's HVAC
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Find Heating and air conditioning pros in Sumner

Northwoods HVAC

5.0(

)

Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairCentral A/C - Install+10 more

Serving Sumner, ME and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

"Josh installed a new water heater, provided us with instructions on proper use and maintenance and has serviced it since. He is honest, thorough, and trustworthy. He also maintains my dad’s HVAC needs too. He has come out for emergency calls too. Suggest things to prevent future additional repair expenses. His prices are reasonable, especially for the personal, friendly customer service and service provided. I would highly recommend Northwoods HVAC."

5 neighbors recently requested a quote

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Upfront Home Inspection, LLC

4.9(

)

Air Ducts & Vents - Clean

Serving Sumner, ME and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"I would highly recommend Upfront Home Inspection, LLC, happy with their work and professional. good job!"

Response time11 hrs

25 neighbors recently requested a quote

Recommended by86%of homeowners

Heat Pump - Install or ReplaceDuctless Mini-split A/C - Install or ReplaceDuctless Mini-split Heating System - Install or Replace+1 more

Serving Sumner, ME and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"Heat pumps of Maine was fast, friendly, efficient, and very responsive to questions. The price was more than fair. They also helped me with my efficiency Maine forms to help me get money back after the install was completed. 10/10 would recommend."

Response time1 day

1 neighbors recently requested a quote

Recommended by85%of homeowners

Heat Pump - Install or Replace

Serving Sumner, ME and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"It was late at night when we realized our water heater blew and flooded our basement like a swimming pool. We had to find a plumber and fast. we came across SWB he was out here within 30 minutes from our call the job he did was impeccable. He went above and beyond he went and got us a new water heater, installed it, and then stuck around to help us clean up, Since then we’ve used him for several other projects. Every time the professionalism came with him I would highly recommend him 100%."

New condensate line property piped into existing house sewer to code

Install condensate pump and neutralizer to bring existing boiler upto code.

1 1/2” water mains insulated after we installed them.

+10

6 neighbors recently requested a quote

Recommended by100%of homeowners

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LaPlante Electric, Inc.

4.2(

)

Heat Pump - Install or ReplaceHeat Pump - Install or Replace - For Business

Serving Sumner, ME and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"Techs were very nice. Took time to put mats down on my carpets to keep them clean. Explained how to operate the heat pump and gave suggestions on how to make it function most efficiently. Everything was cleaned up before they left, they even vacuumed! So glad I went with LaPlante for my heat pump! Bev"

Response time3 days

Response rate89%

55 neighbors recently requested a quote

Heat Pump - Install or Replace

Serving Sumner, ME and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Nat did a fantastic job. He is the best."

Response time2 hrs

Response rate91%

1 neighbors recently requested a quote

Ductless Mini-split A/C - Install or ReplaceHeat Pump - Install or Replace

Serving Sumner, ME and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"They were super helpful and the staff was so nice I recommend Able Trades to everyone they installed 2 heat pumps in my home and they are amazing iam so thankfull"

Response time1 day

7 neighbors recently requested a quote

Heat Pump - Install or Replace

Serving Sumner, ME and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Small jobs welcome

"I could not ask for a better electrician than Noah Parker. He has come through for me big-time on more than one occasion. Noah installed my generator & showed me how to use it; diligently diagnosed & fixed complex electrical problems in my older mobile home; & even fixed my lawnmower! Not only is Noah an expert at his craft. He is utterly kind, patient, trustworthy, fair, & decent. As a clueless first-time homeowner, I am SO grateful for Noah. I highly recommend him."

Response time1 day

14 neighbors recently requested a quote

Central A/C - Service or RepairHeat Pump - Repair or ServiceCentral Air Cleaner - Repair or Service+1 more

Serving Sumner, ME and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Their work was really good. They were really good with communication, very professional, really pleasant to deal with."

Response time8 hrs

38 neighbors recently requested a quote

Recommended by100%of homeowners

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TJ Electrical and Radon Air LLC

New to Angi

Electrical Baseboard or Wall Heater - InstallElectrical Baseboard or Wall Heater - Repair

Serving Sumner, ME and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

TJ Eectric is a residential electrical contractor, specializing in new construction, remodels, service upgrades and much much more! We are a family owned and veteran owned buisness who strive to provide our customers with the best experience possible, we want you to feel like part of the TJ Electric family, and know that we take pride in our workmanship and transparency! We have all 5-star reviews across all platforms we are listed on and do everything we can to maintain that presence on the job. So if your in need of a highly qualified electrician for your home projects give us a call today!

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Heating and Air Conditioning questions, answered by experts

Yes, a frozen AC unit can affect your indoor air quality since the reduced airflow won't be as effective at removing air pollutants, like dust and other allergens. Additionally, ice around the unit can create excess moisture, leading to mold and mildew that can damage your home if you don’t catch it early.

As mentioned above, not all HVAC Schrader valves are necessarily the same. While the valve core and pin or spring size on Schrader valves used for HVAC are generally similar, the valves are not all universal and interchangeable. The size of Schrader valves varies depending on whether it's used in an air conditioner, bicycle tire, or motor vehicle tire.

A power outage can damage your air conditioner, just like a power surge can damage any electrical device or appliance. In most cases, your circuit breaker or built-in surge protection on your AC unit protects your AC and just needs a reset. But in other cases, it might be that your AC compressor or capacitor was blown during the power surge. You’ll need to have an HVAC professional repair or replace any AC parts.

Yes, AC coil cleaning is definitely worth it. Cleaning your AC coils ensures your AC unit will function efficiently for the long term. Dirty and grimy AC coils make your unit work harder to cool your home, resulting in higher electric bills. Additionally, having your coils professionally cleaned regularly will reduce the possibility of extensive maintenance and repair costs.

Window ACs use 500 to 1,400 watts per hour of electricity, while mini-splits use 500 to 700 watts per hour. However, if you need to cool multiple zones in your house, your mini-split can use as much as 2,000 watts per hour. How often you run your system will impact how much electricity you use (and how much you pay per month).

The Sumner, 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.

See all articles

Marwa Hasan
•
Jul 9, 2026Jul 9, 2026
Can You Add Central Air to a Baseboard-Heated House?
A central air system is great for someone looking to cool and heat their home all year round. Even if your home uses baseboard heating, you can still make the switch. Read on to learn more about adding central air to a baseboard-heated house.
Katy Willis
•
May 21, 2026May 21, 2026
12 Air Conditioning Tips for the Summer
Try these 12 top tips to keep your air conditioner working at maximum efficiency. Stay cool, and minimize energy costs with this expert air conditioning advice.
Lawrence Bonk
•
Jul 15, 2026Jul 15, 2026
13 Cool Tips to Reduce Air Conditioning Costs This Summer
Learn how to save money on air conditioning costs this summer by following this handy guide all about your favorite cooling system.
Breyden Kellam
•
Jul 9, 2026Jul 9, 2026
Heat Pump vs. Air Conditioner: What’s the Difference?
Is it time for a new cooling system for your home? Check out this guide to get a head-to-head comparison of heat pump vs. air conditioner systems.
Mary Beth Eastman
•
Jul 9, 2026Jul 9, 2026
Pros and Cons of Air-Source Heat Pumps
Air-source heat pumps are an energy-efficient way to heat and cool your home. Learn the pros and cons of this heating method.
Sophie Yalkezian
•
Jul 7, 2026Jul 7, 2026
How to Retrofit Air Conditioning in Your Home (Even When You Think It’s Not Possible)
Retrofitting your house for AC is, surprisingly, not too hard. Here’s what you’ll need to consider to make it happen.