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Find Central a/c service or repairers in New Castle

Avatar for Kevin Russo HVAC
Kevin Russo HVAC
4.9(
70
)

Serving New Castle, NH and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Kevin resolved a coolant leaking issue in my ductless AC system that two previous AC companies failed to resolve. Seeing that I took an active interest in the system mechanics, Kevin explained relevant system details and the repair process every step of the way. Kevin is very knowledgeable, professional, personable and very fairly priced. I highly recommend Kevin Russo HVAC."
HVAC INSTALLS
Samsung
HVAC INSTALLS
York  condenser
HVAC INSTALLS

+2

Response time2 hrs
Response rate88%
Recommended by98%of homeowners
Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
88
)

Serving New Castle, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"They just replaced my furnace and added central air to our home. They were professional the entire time. They kept me updated to the progress. I would recommend them and call them again if I ever need work in the future"
Additional Photos
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Additional Photos

+11

2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Skovron Mechanical Services
Skovron Mechanical Services
4.1(
85
)

Serving New Castle, NH and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Excellent communication from Keith; outstanding service from Roger. Professional, timely, and reasonably priced. They came in under estimate on my boiler repair and advised that a second bit of work that had previously been discussed was not going to be necessary. I will definitely use them again and highly recommend them!"
Commercial Cooling
Before Oil Boiler
Old
Oil Boiler
HVAC Roof Top Unit

+19

Response time9 hrs
Recommended by84%of homeowners
Sunrise Heating and Cooling
5.0(
5
)

Serving New Castle, NH and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Sunrise Heating and Cooling did an excellent job installing my new Rinnai tankless water heater/boiler. From start to finish, the experience was smooth and professional. The crew was knowledgeable, punctual, and took the time to explain the system and answer all of my questions. The installation was clean, efficient, and clearly done with attention to detail. Everything works perfectly, and I couldn?t be happier with the upgrade. It?s clear they take pride in their work. If you?re looking for reliable, honest, and high-quality service, I highly recommend Sunrise Heating and Cooling."
32 neighbors recently requested a quote
Recommended by40%of homeowners
Avatar for Control Temp, LLC
Control Temp, LLC
4.2(
32
)

Serving New Castle, NH and surrounding areas

Approved

In business since 2004

Free estimates

Customers say: Quick response

"Returned my phone call to advise when they would be able to help me. Very easy to do business with and knows what they are doing, I have them on my list of who to contact for a/c and plumbing issues. Provided me with options for emergency service if I could not wait. Keep up the good work. Jack"
2 neighbors recently requested a quote
Recommended by17%of homeowners
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)

Serving New Castle, NH 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
CircumVent
5.0(
11
)

Serving New Castle, NH and surrounding areas

In business since 2010

Free estimates

Small jobs welcome

"In the middle of a heat wave my AC broke down during the night. I called a company I have used previously, but they weren't able to get to me for at least a week. While searching for a repairman using an app Circumvent contacted me and would come that day by 6 pm. The technician was able to come earlier. He found the issues right away and was able to repair my AC in less than an hour. The price was fair. He explained everything to me before proceeding."
Radiant Floor Rebuild Before
Radiant Floor Rebuild After
Mini Split New Installation
Oil to Gas Furnace Replacement
Hydronic Boiler System

+1

Response time10 mins
Recommended by100%of homeowners
Avatar for SuperiorAir Duct Cleaning
SuperiorAir Duct Cleaning
4.5(
573
)

Serving New Castle, NH and surrounding areas

In business since 2004

Free estimates

Emergency services offered

"I live in a condominium association and needed this done right away. The customer service was excellent and they were here the next morning performing the service as needed. The price was reasonable and I would definitely recommend them to my friends."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+43

Recommended by87%of homeowners
Avatar for NextGen Aire
NextGen Aire
4.7(
45
)

Serving New Castle, NH and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"The entire experience was 5 stars. My issue is that a duct from my central air system was leaking water. I had spoken with another major HVAC company before NGA and they dismissed me. Said its the summer and this happens. I then found NextGen Aire and had the pleasure of speaking with Erin. I explained my situation and concerns and and Erin quoted me a Wednesday visit but then was able to get me in for a diagnosis on Tuesday. Angel was my technician and he was great, he wore a mask for my health condition and worked with my physical limitations. Once the the problem was found, I then spoke with Erin about scheduling the work. Because it is that time of the year Erin couldn't get me in sooner than August 3rd but she understood the my concerns and how worried I was. The next day Erin reached out and was able to get me on for a 7am repair the same week. The work was completed by their technician Rudy. Rudy also was great to work with my limits by wearing a mask and face timing me to show the completed work. He also went above and beyond by address other ducts to prevent future issues not in listed on the work order. They have earned my business and I will use them water heater and central air system. They are caring and put in the effort and it start with Erin."
Condenser
Condenser
Dual Condenser
Another Dual Condenser
NGA1

+777

Response time2 days
Recommended by97%of homeowners
Showing 1-10 of 46
FAQs for central a/c service or repair projects in New Castle, NH

Coils work to absorb heat into the refrigerant that flows through them, moving heat from one location to another. For air conditioning, the evaporator coil inside the air handler in your home absorbs heat. It then transfers the heat outside to the condenser coil, where it releases it. The opposite process happens for heat pumps. When the coils get dusty and dirty, it reduces how well these components work.

Skip regular cleanings, and dirt, debris, and mineral deposits will blanket your evaporator and condenser coils. When that happens, the coils can’t shed heat efficiently, so the system works harder and your energy bill climbs. Over time, overheating strains the compressor and can trigger a full breakdown—an avoidable repair that often costs far more than a simple annual cleaning.

AC coil cleaning is an investment that pays for itself in the benefits it provides. Dust‑caked coils force your AC to run longer, so you spend more on electricity and rack up extra wear. A quick professional cleaning restores efficiency, trims monthly bills, and eases strain on expensive parts. Over the long haul, that small yearly fee delays pricy repairs and stretches the unit’s lifespan, making coil cleaning one of the smartest HVAC tune‑ups you can schedule.

Watch for higher electric bills, rooms that stay warm no matter how low you set the thermostat, or an AC system that runs nonstop. Extra humidity and frost on the coils are also red flags. Catching these clues early lets you schedule a quick cleaning before the system overworks itself and triggers an expensive breakdown.

Your AC cleaning technician starts by shutting off the power to the unit and removing the faceplate. Compressed air and a vacuum hose blast away loose debris, followed by a coil-safe, no-rinse cleaner that dissolves stubborn grime. After the solution has soaked in, the professional wipes the fins, reassembles the housing, and restores power, leaving the system ready to cool at peak efficiency.

The New Castle, NH homeowners’ guide to central a/c service or repairs

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