Top-rated heating and air conditioning pros.

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

Enter your zip and get matched with up to 5 pros

Need a pro for your heating and air conditioning service project in Castine, ME?

Select your specific project to find the pro for you.

Find Heating and air conditioning pros in Castine

Avatar for MAC Heat Pumps
MAC Heat Pumps
4.6(
33
)
Heat Pump - Install or ReplaceDuctless Mini-split Heating System - Install or ReplaceHeat Pump - Install or Replace - For Business+3 more

Serving Castine, ME and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"The crew sent was on time, professional, friendly, efficient, clean and organized. The electrician was the first to arrive and installed the new breakers to the panel and installed the wire for the condenser unit and the wall mounted blowers. The crew installed two power head blowers, one for a large sunroom and another for the living room. The heat pumps are nearly silent yet powerful enough to do the entire first floor of our 3000 sq foot home. The entire install was done in one day and we were thrilled with the result. The estimator who came out took pictures and helped decide what the best options were according to our wishes and needs. This is what this company specializes in and they have it down to a science."
Maintenance
Maintenance
Maintenance
Maintenance
Maintenance

+36

Response time1 day
Response rate93%
4 neighbors recently requested a quote
On The Hill Plumbing LLC
New to Angi
Heat Pump - Install or Replace

Serving Castine, ME and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

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.

Response time2 days
8 neighbors recently requested a quote
Avatar for Aeroseal and Home Performance
Aeroseal and Home Performance
4.2(
33
)
Air Ducts & Vents - Clean

Serving Castine, ME and surrounding areas

In business since 2017

Free estimates

Small jobs welcome

"I called David Athas for a quote to get a dryer vent installed. He called me back the same day and set an appointment for the next day. He arrived on time and gave me several different options on where I could install the vent. He recommended someone to do the plumbing. Both men were professional, on time and completed the work as promised. I would recommend David 100% Vent and ductwork do not come up as an option as to job done, which is why I had to pick handyman however David is in fact a HVAC vent and duct professional."
Insulation/vapor barrier
Insulation/vapor barrier
Insulation/vapor barrier
Insulation/vapor barrier
Insulation/vapor barrier

+13

Response time2 days
Recommended by87%of homeowners
Avatar for octagon-restoration
octagon-restoration
4.7(
96
)
Air Ducts & Vents - Clean

Serving Castine, ME and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"I called Octagon the day after we had an upstairs water leak. The next day, Octagan had scheduled a technician to assess the damage and set up the mitigation solutions to dry out the damage before mold could set in. Everyone from Octagon was friendly, professional and very responsive. If you need a fast, reliable and effective response, you will find it with Octagon!"
Water extraction.
Octagon vehicles
Drying structure damaged by water.
MOLD REMEDIATION
Dirty air duct.

+2

Response time6 hrs
Response rate100%
Recommended by90%of homeowners
Showing 1-10 of 44
Heating and Air Conditioning questions, answered by experts

You should clean your air conditioner at least once per year, but you may need to clean your whole HVAC system (including the air ducts) more often. According to the National Air Duct Cleaners Association, you may need to clean them more frequently depending on factors like whether you smoke, have pets, or have allergies.

Most HVAC companies recommend against setting your AC below 70 as it could freeze up the system and cause more problems. Regardless of how hot it is outside, there is generally a 20 degree difference between the outside and inside temperatures, so even if it’s 100 degrees outside, your AC will likely not be able to cool your home to 70 degrees.

To make the most out of your AC, consider implementing the following best practices: 

  • Choose the right size AC for your home to ensure your unit runs as efficiently as possible.

  • Choose a window with shade, as direct sunlight can cause your AC unit to overheat. 

  • Clean or replace the filter at least every two months. 

  • Inspect the AC’s fan and straighten it if necessary. 

  • Discontinue use immediately if you suspect a malfunction, as running the AC while broken can lead to significant issues. 

  • Turn off (or adjust the temperature) when you leave the house.

When a compressor gets overheated in central air systems or heat pumps, it can still cool your home for a while until it eventually gives out. If the compressor is chronically overheated and no one addresses the root cause, it will create an incredibly expensive problem when your entire HVAC system breaks down and stops working altogether.

Yes, through thorough cleaning and inspection, optimizing functionality, and reducing energy use.

The Castine, 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.