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Find Central a/c service or repairers in Denville

Avatar for Overall Heating and Cooling, LLC
Overall Heating and Cooling, LLC
4.7(
201
)

Serving Denville, NJ and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Sam called immediately and AJ was here earlier than the scheduled time. They replaced a fuse for the air handler and solved a two year mystery of why the AC wasnâ t working. They also charged and cleaned two condensers right before the summer heat set in. Will be calling them for our other central hvac system very soon!"
Our work
Our work
Our work
Our work
Our work

+17

Response time1 hour
Response rate94%
40 neighbors recently requested a quote
Avatar for Dawson Mechanical Contracting
Dawson Mechanical Contracting
4.8(
134
)

Serving Denville, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1988

Free estimates

Emergency services offered

"Wonderful. Dave kindly walked me through the reset process on the phone and did not need to come out to service the water heater. I will be calling him in the future for any needed repairs."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time5 hrs
6 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Ray's HVAC
Ray's HVAC
4.7(
252
)

Serving Denville, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"Isaiah, the service technician from Ray’s, did routine annual maintenance on my central air. My prior contractor retired and I had not had this done in a couple of years. Isaiah was through and answered my questions and concerns. I will be happy to use Ray’s services again."
New heating system with steam humidifier
Expert equipment rigging
Packaged Trane high efficiency equipment
Emergency replacements
Piping

+1

Response time6 hrs
Response rate88%
133 neighbors recently requested a quote
Avatar for AC & Heat by Kyle
AC & Heat by Kyle
4.9(
114
)

Serving Denville, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Emergency services offered

Warranties offered

"I was in desperate need of an AC unit repair and Kyle came to the rescue. Iâ  ve owned my home since 2019 and have been looking for and honest and reliable AC technician. Iâ  ve used a couple of other technicians but Kyle will be my go to moving forward. He kept me informed of everything he was doing and educated me on how my unit should be running. He even gave me info for what filters I should be purchasing to help my unit run efficiently. He gave me several options with regards to repairs and I went with the higher priced option because it was so reasonable and I didnâ  t want to cut corners. I will be scheduling my routine maintenance with him for the summer and winter. Iâ  m so happy I finally found an AC technician I can rely on. I highly recommend him."
Canister
Steam Humidifier
Maintenance FOR ALL!!!
Maintenance FOR ALL!!!
Maintenance FOR ALL!!!

+22

Response time7 hrs
Response rate86%
2 neighbors recently requested a quote
Avatar for AAA HVAC, LLC
AAA HVAC, LLC
4.7(
189
)

Serving Denville, NJ and surrounding areas

Approved

In business since 2000

Emergency services offered

Warranties offered

"I had my 20 year old HVAC replaced entirely by AAA. I am writing this review after a few months to ensure I get full use of both the air conditioner and central heat. Everything is working in great condition. The workmanship and professionalism from quoting to install and servicing is excellent. They only recommended a replacement after they tried their best to initially repair. The work ethic is awesome as they went out of their way to do the job right. It was not an easy install and moving old parts out and bringing new parts in was done professionally. The team worked through the heat, took care of all details appropriately, and completed the entire job in a day with good quality. Hard working team and reliable delivery and high work ethics. Also did several follow ups after the work is done to ensure satistfaction."
New installation of mini split units
Rooftop unit
Jay our Technician
Raheem Condensing units
Our trucks at the job site

+12

Response time2 hrs
Response rate88%
10 neighbors recently requested a quote
Avatar for North East Home Services
North East Home Services
4.2(
87
)

Serving Denville, NJ and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"I received a finde product and good service from the company. The only issue was the original crew didn't connect the unit to the thermostat correctly and we had one cold night. We called the office and they promptly fixed the issue."
Project Photos
Response time1 day
Response rate89%
22 neighbors recently requested a quote
Avatar for A&C Quality Air, LLC
A&C Quality Air, LLC
4.3(
157
)

Serving Denville, NJ and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"I'm picky and can be pain in the neck to be pleased. I want value service that is functional but doesn't cost arms and legs. I did a lot of research, calling, and got quotes from other vendors and decided to go with Cesar's A&C Quality Air. He installed a brand new AC in our single house home. He also came back to repair our heating unit. For the AC installation, his price was reasonable but the service and quality was top notch. He recommended us the appropriate brand that does the same work unlike 99% other vendors who recommend either the most expensive one or the ones sitting on their inventory warehouse. Cesar and his team are thorough and you can tell Cesar is in charge and the work gets done. We also have an old heating unit and I thought it was a quick fix but he came in and spent 1.5 hours with no complaints and explained everything like a professor. I had tons of questions during his each visit and he always answered my questions and provided even further information that I didn't even know I had to know. All aspects - Cesar is trustworthy and I'd recommend him to my family and friends."
A/C
A/C
A/C
A/C
A/C

+26

18 neighbors recently requested a quote
Recommended by92%of homeowners
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FAQs for central a/c service or repair projects in Denville, NJ

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 Denville, NJ 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.