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Top-Rated Air conditioning pros in Caldwell - 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 Caldwell, 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
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Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.9(
74
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Caldwell, NJ and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Excellent service,knowledgeable,fast,reasonable price, I highly recommend to anyone that needs HVAC services."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

2 neighbors recently requested a quote
Recommended by96%of homeowners
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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 Caldwell, 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%
5 neighbors recently requested a quote
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Avatar for Challenger Heating & Air Condition Corporation
Challenger Heating & Air Condition Corporation
4.8(
454
)
Central A/C - Service or Repair

Serving Caldwell, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Reliable, great customer service, and honest. Highly recommend them for all your heating and air conditioning needs. Alfredo came in and diagnose my furnace. He’s very knowledgeable and solved my furnace issue the same day. Went above and beyond to ensure the heat works like I informed the entire process while I was at work."
Furnace & water tank
Furnace & water tank
Coil Replacement
Coil Replacement
Boiler replacements

+11

Response time3 hrs
44 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for Celestial Air HVAC, LLC
Celestial Air HVAC, LLC
4.3(
82
)
Central A/C - Service or Repair

Serving Caldwell, NJ and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"I needed my AC fixed ASAP. Another company gave me the run around for 2 days straight. I decided to see other companies in the area and i can’t across celestial air HVAC. They gave me a same day appointment, came on time, fixed the issue within minutes, kept me updated the entire time, and now my tenants are happy again. Thank you!"
Williamson Oil Boiler
Unit Replacements
Hier Oil Furnace
Unit Replacements
York Gas Furnace

+10

Response time6 hrs
Response rate85%
5 neighbors recently requested a quote
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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 Caldwell, 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
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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 Caldwell, 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%
13 neighbors recently requested a quote
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Avatar for AC & Heat by Kyle
AC & Heat by Kyle
4.9(
114
)
Central A/C - Service or Repair

Serving Caldwell, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Emergency services offered

Warranties offered

"Kyle was real professional, courteous with me and my family and worked through the hot conditions in my attic. I'm already recommending him to some of my neighbors. He was fair with the pricing for the parts and labor. Highly recommended!"
Canister
Steam Humidifier
Maintenance FOR ALL!!!
Maintenance FOR ALL!!!
Maintenance FOR ALL!!!

+23

Response time7 hrs
Response rate87%
1 neighbors recently requested a quote
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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 Caldwell, 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%
110 neighbors recently requested a quote
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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 Caldwell, NJ and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"I highly recommend this company!!! This is someone who knows their stuff and is willing to go the extra mile to really get the job done! Our heating oil ran out while we were away and we came back to a freezing house and an odd puddle of water coming out of the heater. Thanks to Desmond, we were able to get the heater back up and running properly within a day!! Excellent customer service and very professional! I have used them before and will definitely be using them again!!!"
Air conditioning installation
A/C compressor replacement
410A charging system
Oil-Gas conversion
Propane-Gas conversion

+24

Response time11 hrs
Recommended by95%of homeowners
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FAQs for air conditioning projects in Caldwell, 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 Caldwell, NJ homeowners’ guide to air conditioning services

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

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