ABCastello's Heating and Cooling

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Learn about our screening process

18 Years In Business

Company Details

  • Verified Licenses


  • Mon: Open 24 Hours
  • Tue: Open 24 Hours
  • Wed: Open 24 Hours
  • Thu: Open 24 Hours
  • Fri: Open 24 Hours
  • Sat: Open 24 Hours
  • Sun: Open 24 Hours
View All Details & Credentials


Service Details

  • Residential Work
  • Commercial Work
  • Small Jobs Welcome

Areas of Expertise

  • Gas piping and oil to gas conversion.
  • Hydronic heating, Steam heating and Air conditioning.
  • Diagnostic and repairs.
  • HVAC Unit designing and installation.
  • Duct- work designing and modifications
View All Offerings and Cities Served

Cost Information

  • Free Estimates
  • Warranty Offered
  • Credit Cards Accepted


86 Verified Reviews
  • 5
  • 4
  • 3
  • 2
  • 1

Highly rated for

  • Quality
  • Value
  • Customer Service
Showing 1-10 of 86 results
5.0 Luba G. Morristown, NJ

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!!!

5.0 Sandeep V. Mahwah, NJ

great job!keep it up!

5.0 Jamie R. West Caldwell, NJ

The whole process from setting an appointment to the reminders to what the technician was wearing to his friendly but knowledgeable manner was excellent.

5.0 Michael C. Newton, NJ

Great service! I would definitely call them again. Very informative and knowledgeable.

5.0 Michael B. Byram Township, NJ

Professional, courteous and hard working. Would recommend!

5.0 Sara M. Randolph, NJ

We have relied on ABCastello to service our furnace for several years. Recently our CO detector went off, and they arrived in a very timely manner to evaluate the issue. As seniors, heat is a top winter necessary. They were able to make the necessary repair the same day! Not only did they provide excellent service, but they are polite and leave the area clean. What more can you ask for. It is a real pleasure to know our furnace is always in such good hands. Needless to say, we would highly recommend them. Thank you, Desmond and Rob!

5.0 Glenn B. Long Valley, NJ

Our oil burner began emitting Carbon monoxide (CO) early one morning and stopped working. We called several repair services and no one called us back in a timely manner. We found AB Castello's on Angie's List, completed the Angie's List form and Desmond from AB Castellos called us immediately. Robert arrived less than an hour later. The first thing he did when he arrived was check for CO emissions. He then determined that our 16 year old furnace needed to be replaced. Later that day we received an estimate via email, had all of our questions answered on the phone, and arrived the next morning prepared to remove and replace our furnace. Desmond and Robert worked all day, into the evening, in order to install the new furnace. They were determined not to leave us one more night without heat. They were very polite, pleasant, neat and did an excellent job. I would highly recommend this company should you need service of any kind. Their response time was better than almost any other contractor we have hired, and their work excellent. They also cleaned up very well before leaving our home, and were very careful as they carried equipment in and out of our house. I cannot speak highly enough of them

5.0 Chris M. Randolph, NJ

5.0 Tracy P. Lake Hopatcong, NJ

Great service, response time & reasonably priced, Robert was very professional, honest & would definitely recommend! I will definitely be calling back, thanks guys!

5.0 Vivian R. Newton, NJ

Desmond is a very professional, knowledgeable and tact! Well priced for service and a regular down to earth, no bs, straight to the point and honest man. I appreciated his work and how he took the time to explain what was the issue and the how s and whys of the heating system. I will now use him for all my hvac needs and he s already gonna come back to do more work that I need done! Gentleman all around.


ABCastello's Heating and Cooling
Boiler installation
Emergency boiler
Humidifier AprilAire 800.

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