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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon12
    Verified heating and air conditioning services reviews

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

Avatar for RJT Electric LLC
RJT Electric LLC
5.0(
8
)
Thermostat - Install or ReplaceThermostat - Repair or Reprogram

Serving Porter, ME and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"I have hired Wes many times to perform electrical work on my building. He has installed lights, ceiling fans, switches, and receptacles. In every instance he has done an excellent job. He is very knowledgeable about the electrical code. When he has found deficiencies in the existing wiring, he has been able to patiently explain what the problem is and why it needs to be fixed. I highly recommend Wes."
Response time1 day
Response rate95%
28 neighbors recently requested a quote
Avatar for Casco Bay Generators LLC
Casco Bay Generators LLC
5.0(
5
)
Heat Pump - Install or ReplaceHeat Pump - Install or Replace - For BusinessHeat Pump - Repair or Service+1 more

Serving Porter, ME and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

We are proud to be a Veteran-operated, Titanium Level Kohler® licensed and insured generator dealer. We teamed with Kohler® to give you peace of mind that you are working with a dealer-trained, factory-authorized provider to handle these appliances. We offer all Kohler® and Generac warranties and maintenance services. These are the industry’s best products for backup protection at your home or office.\nWe are also proud to work with Efficiency Maine, offering discounts, rebates, loans, and other initiatives to promote high-efficiency equipment that help Maine’s homes and businesses reduce their energy costs and lower their greenhouse gas emissions.\nProfessionally installing a standby generator and/or heat pump for your home or business is one of the best investments you can make. .\nWe at Casco Bay Generators & Heat Pumps keep the power on 24 hours a day, 365 days a year.

Standard installation.
Response time2 days
Response rate92%
13 neighbors recently requested a quote
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Heating and Air Conditioning FAQs, answered by experts

Ideally, an AC system should never need more Freon (a popular refrigerant) because it circulates in a closed loop. However, refrigerant leaks are not uncommon and may occur gradually over 5 to 15 years. If your system has a leak, it will need to be topped up in a process known as an AC recharge. Signs of a refrigerant leak include weakened AC performance, increased humidity in your home, higher utility bills, and a hissing sound from the unit. The cost of an AC recharge will depend on the size and type of your AC unit, as well as the type of refrigerant it uses.

If your HVAC system's capacity doesn't match the required CFM (Cubic Feet per Minute), imbalances can occur. An undersized system struggles to maintain desired temperatures, leading to discomfort. An oversized system might short-cycle, wasting energy and causing temperature fluctuations. Properly matching capacity to CFM ensures efficient and consistent heating, cooling, and home ventilation system performance.

Most experts recommend getting three to five HVAC quotes from licensed, insured, reputable local heating and cooling companies. Getting multiple detailed HVAC quotes (but not too many) lets you compare the equipment, services, and prices of several contractors without being overwhelmed by options. It can also let you see if one contractor’s prices are much higher or lower than the others and give you a chance to ask for clarification. That way, you can weed out any contractors who aren’t providing quality services or materials and find the company that best meets your budget, quality requirements, and long-term goals.

Yes, high-efficiency models reduce environmental impact with lower energy use.

A 3-ton AC unit is probably too big for a home that’s 1,200 square feet. If you have a 1,200-square-foot home, you likely need a unit that’s somewhere around 1.9 and 2 tons. An AC unit that’s too large will be really inefficient and cost you a lot of extra money on your bills. 

The Porter, 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.