Top-rated air conditioning pros.

Get matched with top air conditioning pros in Mountainside, 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.

Top-Rated Air conditioning pros in Mountainside - Updated Nov 2026

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 Mountainside, 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
14 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for V.I.P. HVAC
V.I.P. HVAC
4.7(
91
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Mountainside, NJ and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"They were honest and efficient and know a lot of information about the problem with my central air conditioning repair. I would 100% recommend them and surely use them again in the future."
Old furnace and evaporator coil
TIGHT SPACE
Connecting the furnace & return duct together.
Finished job. Furnace & Coil
Furnace and Coil

+107

Response time4 hrs
5 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for AC & Heat by Kyle
AC & Heat by Kyle
4.9(
114
)
Central A/C - Service or Repair

Serving Mountainside, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Emergency services offered

Warranties offered

"AC & Heat by Kyle provided a very thorough service call on an old boiler. The service provider walked me through the condition of my boiler using pictures and data, and what my options were for service or replacement. Would highly recommend this professional."
Canister
Steam Humidifier
Maintenance FOR ALL!!!
Maintenance FOR ALL!!!
Maintenance FOR ALL!!!

+23

Response time7 hrs
Response rate87%
1 neighbors recently requested a quote
Avatar for Valairco
Valairco
4.7(
224
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Mountainside, NJ and surrounding areas

Approved

In business since 1968

Free estimates

Emergency services offered

"I had my HVAC replaced in my condo during the summer of 2018. I had just moved and had painters working when it malfunctioned. There turned out to be a leak and I decided to purchase a new system after hearing about previous problems with the unit. I had used Valairco for annual checkups and was happy with the company. I ordered the new system requesting it be done as soon as possible because of the situation. They immediately ordered the new system and installed it as soon as it was shipped to them. Lou did a great job and I’m happy with my purchase and guarantee."
24 Hour Service
Trained Technicians
Quality Products
Additional Photos
Additional Photos

+44

Response time1 day
10 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Ray's HVAC
Ray's HVAC
4.7(
268
)
Central A/C - Service or RepairCentral A/C - Install - For BusinessCentral A/C - Service or Repair - For Business+4 more

Serving Mountainside, 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%
114 neighbors recently requested a quote
Avatar for SOS Work Services
SOS Work Services
4.5(
150
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair

Serving Mountainside, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Emergency services offered

"The work consisted of replacement of gas furnace as well as air conditioning unit from early 1990's. SOS's price quote was competitive with two other quotes. I elected SOS specifically due their responsiveness, cooperation, proximity, and rating on Angi's List: 1) owner (Rob S.) came out immediately on a Saturday a couple hours after my call to review job and provided the price quotation within a couple of days, 2) quoted work with different AC manufacturers based on my preferences - did not try to push other units, 3) scheduled work per my calendar request. The crew. lead by Michael W., was very hard working, professional, and dedicated. I was also very impressed that crew performed a separate pre-inspection a week before the installation to familiarize themselves with the scope and work out a few details. Job was completed according to the schedule and quoted price!!! In summary, I'm very happy with the quality of work as well as my decision to select SOS. I highly recommend selecting SOS."
Kitchen
Kitchen
Kitchen
Kitchen
Kitchen

+170

Response time8 hrs
Response rate90%
11 neighbors recently requested a quote
Avatar for Petro Home Services
Petro Home Services
4.4(
1,283
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Mountainside, NJ and surrounding areas

Approved (Corporate)

In business since 1903

Emergency services offered

Warranties offered

With over 100 years experience, we know how to keep you comfortable, safe and help you save on energy costs. Our local 24/7 customer service and support means automatic heating oil deliveries and our service response is always fast. We never run out of heating oil plus our pricing and payment plans are designed to help you manage your costs all year round. Experience the Petro difference today!

Additional Photos
Additional Photos
Additional Photos
Response time6 days
Response rate100%
18 neighbors recently requested a quote
...
Showing 1-10 of 574

FAQs for air conditioning projects in Mountainside, 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 Mountainside, NJ homeowners’ guide to air conditioning services

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