Over 40 Years
of Quality & Professionalism
Two of New Hampshire’s most successful mechanical contractors have combined teams to form a commercial plumbing and HVAC powerhouse in the market. Denron Plumbing & HVAC LLC, serving commercial and industrial plumbing and HVAC clients throughout New England since 1974, and J. Lawrence Hall, family-owned and operated design-build mechanical contractor in Nashua since 1937, have merged to form Denron Hall.
It was important for each company to find a partner who could help carry on the legacies built over decades. Taking care of our employees and customers long-term has been our top priority. This merger makes us larger and stronger.
Why Choose Us?
24/7 Emergency Service
We understand that plumbing emergencies happen and make ourselves available 24/7 to handle any emergency you may have.
Projects Done On Time
We will complete your project on time, within budget and without hassle, while guiding you every step of the way.
Licensed & Insured
Our highly trained, licensed and insured staff are dedicated to providing top-quality work and customer satisfaction throughout every step of the project.
Unmatched Customer Service
Our extensive portfolio and strong partnerships directly illustrate why we have been one the leaders of our industry for over 40 years.
Denron Hall is an exciting place to work with plenty of room for advancement. See if a career with us is right for you.
Make Yourself Comfortable with an Authorized Mitsubishi Electric Diamond Contractor
You demand the best and so does Mitsubishi Electric. We have been selected as a Diamond Contractor because we value the highest level of certification, training, and hands-on expertise. Mitsubishi Electric has selected the finest and most knowledgeable HVAC contractors in the industry to provide you with superior sales, installation, and service support possible.Learn More