Elaine F.
7/1/2025
My AC needed to be serviced and I called LenThonus Plumbing and Heating. This company installed my AC in 2002! The owner came with a nice young man and they took their time and went over my unit...
Len Thonus Plumbing Heating Air Conditioning
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113 Cedar Hill Ave
Mahwah, NJ 07430
Len Thonus Plumbing Heating Air Conditioning is a reliable service provider based in Mahwah, NJ, specializing in plumbing, heating, air conditioning, and drain cleaning. The company is backed by experienced professionals, holding NJ Master Plumber and HVACR licenses, ensuring quality service for residential and commercial needs.
Committed to customer satisfaction, Len Thonus Plumbing Heating Air Conditioning values effective communication and encourages clients to reach out for emergency services, appointment scheduling, or inquiries about their wide range of offerings. With a focus on excellence in service delivery, they are a trusted choice for local HVAC and plumbing solutions.
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Reviews
4.510 reviewsPat P.
10/20/2025
Len Jr is the best. The only plumber I trust to get the work done right the first time. He and his crew put in a new heating system, hot water holding tank and other plumbing problems we had....
Francis F.
7/5/2023
Had a major repair done in my store. The cast iron drain pipe serving two apartments and the main store cracked after 80 years. Len and Matt arrived on time and started the job with laying down...
Jeff S.
5/23/2024
I was in the HVAC business for 59 years. When my AC unit failed this past year, I felt I was too old to repair it myself. Called Len Thonus to make repairs. They are the best and one of the few...
Robert D.
5/2/2019
We recently used Len Thonus for a gas boiler installation. There price was more than fair and their workers could not have been more polite. I would definitely use them again. It is hard to...
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