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Top-Rated Heating and air conditioning pros in Castine - Updated Nov 2026

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 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
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Castine, ME and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Excellent service, very fast response to my request for service, picked up laptop, diagnosed issues. Initially thought it was an OS update issue but the hard drive had failed along with other components (including 'CPU). Because other components were involved, a new solid state hard drive was put into a laptop with a working processor - same type CPU as in the failed unit. The laptop was repaired and returned in less than a week. This company picked up and dropped off the laptop (driving from Huntsville, AL (about 60-70 minutes)-- great service in this covid environment. I would recommend this company to my family./friends and will use again."
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

There are many recognizable symptoms of AC compressor failure. They include loud banging noises, hot air being continually circulated in your home despite running the AC at full blast, uneven airflow and cooling, and electrical issues like constant surges due to the compressor working overtime. While some of these symptoms, like uneven cooling, can have other root causes, they are common indicators of compressor problems.

The cost to replace an AC evaporator coil is typically between $600 and $2,500, with an average cost around $1,300 to $1,350. The price of the coil itself can range from $550 to $1,100, depending on the brand, size, and style, with professional labor adding around $700. Replacing a condenser coil is generally less expensive, costing about $800. Because this repair involves handling refrigerants, it requires a licensed AC professional. Regular inspections, which cost between $200 and $600, can help prevent costly coil replacements.

Most HVAC companies charge a flat service call fee of between $75 and $150, which includes traveling to your home and inspecting your system to find the underlying problem. Keep in mind that these prices only include diagnostics and the actual repairs will usually be billed separately. If you’re calling for routine service, the service call will be included in your inspection and tune-up, with the total sitting around $150. Your prices could be a little higher if you have a very large home with multiple condensers and air handlers, as inspections and servicing take longer.

Yes, a dirty air filter can cause a higher electric bill. That’s because clogged filters make it harder for air to flow through your HVAC system, which forces it to work harder and use more energy. According to the U.S. Department of Energy, replacing dirty filters can save you between 5% and 15% in utility costs.

An air conditioner’s watt usage depends on multiple factors, including the type of AC unit, its size, and how often you use it. With that said, most central air conditioners consume between 3,000 and 3,500 watts. Meanwhile, window AC units use 900 to 1,400 watts, and portable air conditioners consume 2,900 to 4,100 watts.

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.