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Find Central a/c service or repairers in Randolph

Avatar for Air 1 HVAC, LLC

Air 1 HVAC, LLC

4.61(
64
)
Approved Pro

Air 1 HVAC, LLC

4.61(
64
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
23 years of experience

Air 1 Heating and Cooling takes pride in our heating and air conditioning expertise. We ensure optimum quality and customer satisfaction, with every project. Call us for a free estimate on direct replacements and new installs of equipment. We offer 24 hour emergency service.

"They installed our unit in March 2015, and the unit induced motor was found to be defective in Nov 2015. They not only charged us for the service call but also charged us for the part which was under warranty. It was very unprofessional. The same part after less than 5 years failed again, and they took no responsibility for their workmanship. Customer service Person does not deal with the customer on the request. This time again they were charging us for the defective part and exorbitantly for the service call under the pretext that we did not sign a maintenance contract with them. So we did not finally go with them but went with another vendor who is far better and professional."

Kerman D on November 2020

Air 1 Heating and Cooling takes pride in our heating and air conditioning expertise. We ensure optimum quality and customer satisfaction, with every project. Call us for a free estimate on direct replacements and new installs of equipment. We offer 24 hour emergency service.

"They installed our unit in March 2015, and the unit induced motor was found to be defective in Nov 2015. They not only charged us for the service call but also charged us for the part which was under warranty. It was very unprofessional. The same part after less than 5 years failed again, and they took no responsibility for their workmanship. Customer service Person does not deal with the customer on the request. This time again they were charging us for the defective part and exorbitantly for the service call under the pretext that we did not sign a maintenance contract with them. So we did not finally go with them but went with another vendor who is far better and professional."

Kerman D on November 2020


Avatar for MDL Electric, LLC

MDL Electric, LLC

4.81(
67
)
Approved Pro

MDL Electric, LLC

4.81(
67
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
10 years of experience

is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business

"They did a good job replacing the 220v outlet to 120v. Good pricing too."

Maria Cecilia R on May 2024

is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business

"They did a good job replacing the 220v outlet to 120v. Good pricing too."

Maria Cecilia R on May 2024


Avatar for ABCastello's Heating and Cooling

ABCastello's Heating and Cooling

4.81(
87
)
Approved Pro

ABCastello's Heating and Cooling

4.81(
87
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
20 years of experience

A family-owned and operated business, with over 25 years of experience. ABCastello's Heating and Air conditioning, gas piping, oil to gas conversions, oil furnace installation and repair. Give us a call today and speak to someone to get professional advice on your next project. We look forward to working with you! BOOK YOUR APPOINTMENTS NOW AT WWW.ABCASTELLOSHVAC.COM

"Desmond did a great job completing service work on my oil burner. Clean, quick and knowable of his work. I would and still use them for my boiler."

Angelo B on March 2025

A family-owned and operated business, with over 25 years of experience. ABCastello's Heating and Air conditioning, gas piping, oil to gas conversions, oil furnace installation and repair. Give us a call today and speak to someone to get professional advice on your next project. We look forward to working with you! BOOK YOUR APPOINTMENTS NOW AT WWW.ABCASTELLOSHVAC.COM

"Desmond did a great job completing service work on my oil burner. Clean, quick and knowable of his work. I would and still use them for my boiler."

Angelo B on March 2025


Chris Merring Heating and Air Conditioning

5.00(
2
)
Approved Pro

Chris Merring Heating and Air Conditioning

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
37 years of experience

We have over 30 years of industry experience and are dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on three generations of honesty and integrity. We specialize in central A/C, heating and furnace systems, in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!

"He is courteous and treats your home like it is his own and presents with options when it comes to prices."

Carla D on March 2018

We have over 30 years of industry experience and are dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on three generations of honesty and integrity. We specialize in central A/C, heating and furnace systems, in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!

"He is courteous and treats your home like it is his own and presents with options when it comes to prices."

Carla D on March 2018


Avatar for Gold Medal Service

Gold Medal Service

4.00(
4
)
Approved Pro

Gold Medal Service

4.00(
4
)
Approved Pro
Customers say: Quick response
868 local quotes requested

Gold Medal Service is your premier choice for Electrical and Home Systems needs! In the New York City (Tri-State Area). Our team of experts is dedicated to providing top-notch service. With our unmatched expertise and commitment to customer satisfaction. Contact us today for a gold standard service experience.

"I recently replaced the heating/air conditioning unit in my townhome. It was an easy process start to finish. Aiden (sales) answered all my questions and provided options for my needs. Mick the technician was on-time and thorough. These guys represented their company well. Great experience working with Gold Medal Service."

Isa michelle R on January 2025

Gold Medal Service is your premier choice for Electrical and Home Systems needs! In the New York City (Tri-State Area). Our team of experts is dedicated to providing top-notch service. With our unmatched expertise and commitment to customer satisfaction. Contact us today for a gold standard service experience.

"I recently replaced the heating/air conditioning unit in my townhome. It was an easy process start to finish. Aiden (sales) answered all my questions and provided options for my needs. Mick the technician was on-time and thorough. These guys represented their company well. Great experience working with Gold Medal Service."

Isa michelle R on January 2025


Avatar for Ryan & Company

Ryan & Company

4.68(
60
)
Approved Pro

Ryan & Company

4.68(
60
)
Approved Pro
Customers say: Super punctual
71 local quotes requested
76 years of experience

We are a Family owned & operated business. Ryan & Co.,Inc. is a full service Plumbing, Heating and Cooling repair and installation company established in 1949 with a genuine commitment to professional, affordable & personalized service.

"Great job guys. Lovely working with them"

Robert H on July 2024

We are a Family owned & operated business. Ryan & Co.,Inc. is a full service Plumbing, Heating and Cooling repair and installation company established in 1949 with a genuine commitment to professional, affordable & personalized service.

"Great job guys. Lovely working with them"

Robert H on July 2024


Avatar for Gold Medal Service, LLC (NY)

Gold Medal Service, LLC (NY)

4.35(
310
)
Approved Pro

Gold Medal Service, LLC (NY)

4.35(
310
)
Approved Pro
Customers say: Quality work
50 local quotes requested
47 years of experience

Plumbing, HVAC, and electrical systems make your house livable. One minor issue with any of these systems can put your home at a standstill. In case you find yourself in this unfortunate situation, know that you can count on Gold Medal Service. For over 24 years, our company has been based out of East Brunswick and taking care of the homes of New Jersey residents through our top-quality plumbing, HVAC, and electrical services. We are available 24 hours a day, 7 days a week to address even the most mind-boggling issues of your in-home equipment. From repairs, installations, and upgrades, our technicians are known for getting the job done right every time. We also provide upfront pricing with a full description of the service before commencing work to avoid any surprises down the line.

"They were here when they said they would. The gentleman who came took his time and explained what he did and what should be done in the near future. Appreciated him exlaining everything to me."

Cheryl a on July 2023

Plumbing, HVAC, and electrical systems make your house livable. One minor issue with any of these systems can put your home at a standstill. In case you find yourself in this unfortunate situation, know that you can count on Gold Medal Service. For over 24 years, our company has been based out of East Brunswick and taking care of the homes of New Jersey residents through our top-quality plumbing, HVAC, and electrical services. We are available 24 hours a day, 7 days a week to address even the most mind-boggling issues of your in-home equipment. From repairs, installations, and upgrades, our technicians are known for getting the job done right every time. We also provide upfront pricing with a full description of the service before commencing work to avoid any surprises down the line.

"They were here when they said they would. The gentleman who came took his time and explained what he did and what should be done in the near future. Appreciated him exlaining everything to me."

Cheryl a on July 2023


Avatar for Dawson Mechanical Contracting

Dawson Mechanical Contracting

4.85(
123
)
Approved Pro

Dawson Mechanical Contracting

4.85(
123
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
83 local quotes requested

We are a BPI Building Performance Institute Accredted Plumbing and HVAC company, We are licensed plumbers and I am a certified plumbing instructor and fire inspector I also have 2 Backflow testing certifiactions. We do the highest quality residential and commercial work with my highly trained staff. I am the past president of the N.J. State league of Master plumbers for 2010-2011

"Great! The workers are very professional and punctual. They installed a tankless water heater. They cleaned everything up when they were done and then explained how it worked and how to maintain it throughout the years so it would work better. I highly recommend this company."

Lourdes A on July 2025

We are a BPI Building Performance Institute Accredted Plumbing and HVAC company, We are licensed plumbers and I am a certified plumbing instructor and fire inspector I also have 2 Backflow testing certifiactions. We do the highest quality residential and commercial work with my highly trained staff. I am the past president of the N.J. State league of Master plumbers for 2010-2011

"Great! The workers are very professional and punctual. They installed a tankless water heater. They cleaned everything up when they were done and then explained how it worked and how to maintain it throughout the years so it would work better. I highly recommend this company."

Lourdes A on July 2025


Avatar for Pipe Works Services Inc

Pipe Works Services Inc

4.54(
164
)
Approved Pro

Pipe Works Services Inc

4.54(
164
)
Approved Pro
Customers say: Quick response
173 local quotes requested
25 years of experience

Since 2000, we have built our reputation as one of Northern New Jersey’s most trusted experts for home comfort and efficiency. Improving the overall comfort and energy efficiency of your home is our #1 priority, and we believe we are the best. What sets us apart from other home energy contractors is that our team undergoes continuous extensive training that is unmatched by anyone in the industry. You can rest assured that we will perform the job right the first time around! With over 75 years of combined service experience, Pipe Works Services Inc. is a New Jersey Plumbing, Heating, Air Conditioning, Water Conditioning, Insulation, Electrical, Installation, Drain Cleaning, Maintenance, Replacement company located in Morris County. Pipe Works will send you only the best technician or specialist to fix, replace or install your needs.

"Sales associate and repair technician were extremely responsive and the work was completed quickly."

David M on November 2025

Since 2000, we have built our reputation as one of Northern New Jersey’s most trusted experts for home comfort and efficiency. Improving the overall comfort and energy efficiency of your home is our #1 priority, and we believe we are the best. What sets us apart from other home energy contractors is that our team undergoes continuous extensive training that is unmatched by anyone in the industry. You can rest assured that we will perform the job right the first time around! With over 75 years of combined service experience, Pipe Works Services Inc. is a New Jersey Plumbing, Heating, Air Conditioning, Water Conditioning, Insulation, Electrical, Installation, Drain Cleaning, Maintenance, Replacement company located in Morris County. Pipe Works will send you only the best technician or specialist to fix, replace or install your needs.

"Sales associate and repair technician were extremely responsive and the work was completed quickly."

David M on November 2025


Avatar for Gold Medal Service

Gold Medal Service

3.88(
302
)
Approved Pro

Gold Medal Service

3.88(
302
)
Approved Pro
Customers say: Super punctual
69 local quotes requested
45 years of experience

Plumbing, HVAC, and electrical systems make your house livable. One minor issue with any of these systems can put your home at a standstill. In case you find yourself in this unfortunate situation, know that you can count on Gold Medal Service. For over 24 years, our company has been taking care of the homes of New Jersey residents through our top quality plumbing, HVAC, and electrical services. We are available 24 hours a day, 7 days a week to address even the most mind-boggling issues of your in-home equipment. From repairs, installations, and upgrades, our technicians are known for getting the job done right every time. We also provide upfront pricing with a full description of the service before commencing work to avoid any surprises down the line.

"I just finished having my new furnace and AC unit installed by Gold Metal. Workers were really great and did a very good job. Did a great job of leaving the area very clean and were very professional. I have used Gold Metal for years and have always been happy with their service. I would highly recomend their services."

Jeff K on August 2025

Plumbing, HVAC, and electrical systems make your house livable. One minor issue with any of these systems can put your home at a standstill. In case you find yourself in this unfortunate situation, know that you can count on Gold Medal Service. For over 24 years, our company has been taking care of the homes of New Jersey residents through our top quality plumbing, HVAC, and electrical services. We are available 24 hours a day, 7 days a week to address even the most mind-boggling issues of your in-home equipment. From repairs, installations, and upgrades, our technicians are known for getting the job done right every time. We also provide upfront pricing with a full description of the service before commencing work to avoid any surprises down the line.

"I just finished having my new furnace and AC unit installed by Gold Metal. Workers were really great and did a very good job. Did a great job of leaving the area very clean and were very professional. I have used Gold Metal for years and have always been happy with their service. I would highly recomend their services."

Jeff K on August 2025

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FAQs for central a/c service or repair projects in Randolph, 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 Randolph, 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.