Top-rated air conditioning pros.

Get matched with top air conditioning pros in Cedar Knolls, NJ

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Air conditioning pros in Cedar Knolls

Air Temp Service Company, Inc.
4.2(
143
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business

Serving Cedar Knolls, NJ and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"Mario was very professional and knowledgeable. He always answered any questions I had promptly and thoroughly. I had questions about sizing and seer rating for the unit and he let me know which one would best fit my situation. The crew always cleaned up after themselves and left the place like they came. They installed a new air handler and compressor in 1 day and came back to add an attic fan."
Weil Mclane bolier
Rheem hot air furnace
Buderus Boiler & ht wtr
15 zone radiant heat
Rheem A/C install

+1

Response time1 day
23 neighbors recently requested a quote
Recommended by84%of homeowners
Request Quote
Avatar for Speer Air
Speer Air
4.6(
165
)
Central A/C - InstallCentral Air Cleaner - Install or ReplaceCentral Humidifier - Install or Replace+1 more

Serving Cedar Knolls, NJ and surrounding areas

Approved

In business since 1958

Free estimates

Emergency services offered

"I have used Speer Air for several years for HVAC preventive maintenance at my home. We recently expanded and they installed a package unit to take care of the expansion space. The work was good and they have been back for adjustments as necessary."
Residential Attic Install
Commercial Multi Unit Install
Guardian Series
Response time2 days
Response rate100%
6 neighbors recently requested a quote
Request Quote
Avatar for Overall Heating and Cooling, LLC
Overall Heating and Cooling, LLC
4.7(
202
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For BusinessCentral Humidifier - Install or Replace

Serving Cedar Knolls, NJ and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Must use for air conditioning"
Our work
Our work
Our work
Our work
Our work

+17

Response time1 hour
Response rate94%
17 neighbors recently requested a quote
Request Quote
Avatar for AC & Heat by Kyle
AC & Heat by Kyle
4.9(
114
)
Central A/C - Service or Repair

Serving Cedar Knolls, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Emergency services offered

Warranties offered

"Great job under very difficult roofing conditions. Would recommend him for any future work."
Canister
Steam Humidifier
Maintenance FOR ALL!!!
Maintenance FOR ALL!!!
Maintenance FOR ALL!!!

+23

Response time7 hrs
Response rate87%
1 neighbors recently requested a quote
Request Quote
Avatar for ABCastello's Heating and Cooling
ABCastello's Heating and Cooling
4.6(
101
)
Central A/C - Service or RepairCentral Humidifier - Repair or Service

Serving Cedar Knolls, NJ and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Excellent and professional work. Will definitely recommend ABCastello. So happy he was able to come out the same day I needed service with my air conditioner unit. Great job! Thank you!"
Air conditioning installation
A/C compressor replacement
410A charging system
Oil-Gas conversion
Propane-Gas conversion

+24

Response time11 hrs
Recommended by95%of homeowners
Request Quote
Avatar for Ray's HVAC
Ray's HVAC
4.7(
265
)
Central A/C - Service or RepairCentral A/C - Install - For BusinessCentral A/C - Service or Repair - For Business+4 more

Serving Cedar Knolls, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"Ray's HVAC responded quickly to my request to repair my furnace, which could not start this year. They were able to find and fix the real cause of the issue - a bird net in the PVC pipe which blocked the air flow, and made my furnace is working again!"
New heating system with steam humidifier
Expert equipment rigging
Packaged Trane high efficiency equipment
Emergency replacements
Piping

+1

Response time6 hrs
Response rate89%
107 neighbors recently requested a quote
Request Quote
Avatar for Phase II Development, LLC
Phase II Development, LLC
4.5(
47
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Cedar Knolls, NJ and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Wonderful experience with a very skilled technician to replace a 4 zone thermostat that is no longer available. Our problem was resolved in a timely manner and we were kept informed every step of the way."
Furnace Heaating Repair
Commercial Ice Machine
Commercial Ice Machine Service
Commercial Ice Machine Cleaning
Deli Case Repair

+12

Response time3 hrs
15 neighbors recently requested a quote
Recommended by95%of homeowners
Request Quote
Avatar for AAA HVAC, LLC
AAA HVAC, LLC
4.7(
189
)
Central A/C - Service or Repair

Serving Cedar Knolls, NJ and surrounding areas

Approved

In business since 2000

Emergency services offered

Warranties offered

"I had an emergency situation in which the air condition unit was not working! My house was as hot as an oven! AAA HVAC was able to come out quickly about an hour after I called and fix the problem for minimal cost! I would definitely call them again! They are f friendly, professional, honest and very reliable! I recommend this company! Do not hesitate to call them! Thanks so much!"
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%
4 neighbors recently requested a quote
Request Quote
Avatar for MDL Electric LLC Cooling & Heating
MDL Electric LLC Cooling & Heating
4.6(
134
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Cedar Knolls, NJ and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"MDL Electric was a great Angie's List find! My tenant's washer stopped working in the middle of a load. I also needed to have 2 breakers and 6 GFI outlets replaced. Spoke to Miguel at 1:30 this afternoon. He was able to get a technician over there in about 30 minutes. He explained all that needed to be done and, less than 3 hours later, the work was finished and everything was left neat and clean! Very prompt and professional. Now THAT’s customer service! I wouldn't hesitate to use MDL Electric again or to recommend them to friends in the future. Thank you, Miguel!"
Additional Photos
Additional Photos
Additional Photos
Response time1 day
8 neighbors recently requested a quote
Recommended by93%of homeowners
Request Quote
Dun Rite Heating and Cooling
4.5(
112
)
Central A/C - InstallCentral A/C - Install - For BusinessDuctless Mini-split A/C - Install or Replace

Serving Cedar Knolls, NJ and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We look forward to earning your business.

3 neighbors recently requested a quote
Recommended by94%of homeowners
Request Quote
...
Showing 1-10 of 483

FAQs for air conditioning projects in Cedar Knolls, NJ

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Cedar Knolls, NJ homeowners’ guide to air conditioning services

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

See all articles