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Avatar for Heat Pumps of Maine
Heat Pumps of Maine
4.8(
17
)
Ductless Mini-split A/C - Install or Replace

Serving Durham, ME and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"Cam did a great job doing the installation and explanation of the heat pump. He also took care of registering the heat pump so everything was taken care of for us. The rebate from the state was also taken care of and deducted from our bill so we only paid the price of the heat pump with the rebate included. This is a big advantage because you are not paying the extra $2,000 for the bill and then waiting to get the $2,000 back from the state which could take weeks. They did a great job."
Heat Pump
Heat Pump
Heat Pump
Heat Pump
Response time1 day
Recommended by85%of homeowners
Avatar for Northwoods HVAC
Northwoods HVAC
5.0(
6
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+1 more

Serving Durham, 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."
Avatar for Able Trades
Able Trades
5.0(
8
)
Ductless Mini-split A/C - Install or Replace

Serving Durham, 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"
New Gloucester Home
New Gloucester Home
New Gloucester Home
New Gloucester Home
New Gloucester Home

+1

Response time1 day
Response rate100%
3 neighbors recently requested a quote
Heritage Home Service
4.8(
5
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Durham, ME and surrounding areas

Approved (Corporate)

In business since 1988

Credit card accepted

Heritage Home Service is a premier home service provider operating in New Hampshire, Massachusetts and Southern Maine. Bringing all the perks that come with having a large team while maintaining a strong focus on family-oriented service.\n\nOur namesake is about honoring those who came before us, and most importantly, it is about leaving a legacy of serving people extraordinarily well.\n\nFor over 37 years in business, we have helped countless families across our community stay comfortable and healthy in their homes, and today we continue to evolve and find new ways to serve you even better.

101 neighbors recently requested a quote
Avatar for GrayBridge
GrayBridge
5.0(
19
)
Window A/C Unit - Service or Relocate

Serving Durham, ME and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"Josh did a great job on the roof repair. He did the job when he said he would. He picked up the materials so I didn’t have to. I would hire Josh again and I would recommend him as well."
Working on Deck
Finished Deck
Old Door
Progress Pic
Trim

+120

Response time1 day
Response rate100%
26 neighbors recently requested a quote
Avatar for The Golden Rule Handyman, LLC
The Golden Rule Handyman, LLC
4.4(
32
)
Window A/C Unit - Service or Relocate

Serving Durham, ME and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Fabulous communication ,and work. I live out of state, and each time that work has needed to be done The Golden Rule Handyman has been on time and very professional . One of the few companies that is excellent in all phases of the business world. I highly recommend this company !"
Response time2 days
Recommended by96%of homeowners
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Air Conditioning questions, answered by experts

Replacing an HVAC system does not always include new ductwork. The decision depends on the condition of your existing ducts. If they are in good shape, correctly sized for the new unit, and meet current standards, they can often be reused. However, if the ducts are damaged, poorly designed, or improperly sized, they will likely need to be replaced or upgraded to ensure the new system operates efficiently. An HVAC contractor will assess your ductwork and recommend the best course of action. Typically, ductwork is purchased separately, and a full replacement will add to the overall project cost.

A blockage in the ductwork may prevent air from flowing through the vent. If some rooms in your home are very hot or cold and another isn't, that can be a sign that a vent is blocked. Another sign of a blockage is a buildup of dirt or dust around the vent. In either case, a duct installer or cleaning service can investigate the issue for you and recommend a course of action.

Whether an HVAC damper should be open or closed depends on the season, the zone it controls, and the temperature in that zone. In the summer, open upstairs dampers and close lower-level dampers to get the most efficient cooling possible. In the winter, do the opposite. Cool air will naturally flow down to lower levels, while warm air will rise. This keeps your system from working harder and helps prevent common AC problems.

Yes, ventless portable air conditioners exist, and not all standard portable air conditioners must be vented through a window.

Ventless portable units, often called evaporative coolers, do not have exhaust hoses. They use a water reservoir and a cooling pad to add moisture to the air, making it feel cooler. These units work best in dry climates because humid areas cannot absorb much additional moisture.

For standard portable air conditioners that do require venting, a window is not the only option; they can also be vented through a door, wall, or ceiling. However, it is essential to vent these units properly. Running a standard portable AC without venting it is counterproductive because it needs to expel heat to cool the room. Failing to do so will only increase the room's temperature.

When your HVAC system is loud, a few different causes are possible. If you have loose connections or bolts in the hardware, they can rattle as the system runs and vibrates. If you have an extremely dirty furnace filter, it could cause the system to generate noise. More commonly, an excessively loud HVAC system indicates a malfunction in the system. You may have a blower motor that is close to failing or a compressor that is breaking down. These issues require an immediate inspection.

The Durham, ME homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.