Len Thonus Plumbing, Heating & Air Conditioning is a second-generation, family owned, local service repair and installation contractor catering to the needs of homeowners and businesses in Northern Bergen County and parts of Passaic and Sussex County for over 40 Years! We service and repair all makes and models of plumbing fixtures, water heaters, boilers, furnaces, heat pumps, central A/C condensers and air handlers, humidifiers, commercial rooftop units, and ductless mini splits.

Len Thonus Plumbing, Heating & Air Conditioning is a full-service, quality-oriented company in Mahwah, NJ. As a plumbing contractor, our services include heating, air conditioning, drain cleaning, and any services related to plumbing. We repair or replace heating and air conditioning units, perform general maintenance of these units to ensure they work properly for years to come. As a longtime plumbing contractor we understand the importance of resolving plumbing and HVAC issues in a timely manner. We are a plumbing contractor who works quickly and efficiently, always keeping our work area clean, to not upset your daily routine. We genuinely enjoy what we do and always provide high quality workmanship.