Diversified HVAC Services, Inc. provides outstanding commercial and residential HVAC/R (heating, ventilating, air conditioning, and refrigeration) services and quality products to the greater Washington, DC and Baltimore Metro areas, including Maryland and Virginia.
Diversified HVAC Services, Inc. was started on April 1, 1990 with a total staff of two people, C. E. Mullaney III and B. E. Dawes, each owning 50% of the company. Their goal was to become self-employed with adequate income, growth, and future security by the sale of service and installation in all areas of the HVAC/R business. Mr. Dawes left the company in August 1997 while Mr. Mullaney kept the company runnng. Mr. Mullaney started in the HVAC business in 1965 in an entry-level position and progressed to senior mechanic, then into supervision, engineering, sales, ownership and operations manager of a large company, and finally into ownership of this company.
In February 2007, the day to day operations of the company were taken over by Chuck Mullaney IV along with service management of field operations being assumed by Andre’ Charron. Chuck IV has been in the HVAC business since 1990 when he started as a helper with Diversified. Andre started his HVAC career in 1995 after leaving the US Naval service and then attending HVAC trade school. He joined Diversified in October of 1997 after meeting Chuck IV at the Air Conditioning Contractors of America (ACCA) Apprenticeship program. Together with Chuck III, they hope to continue the success of Diversified HVAC Services, Inc. while applying the principles that have made this company a success from day one.
It is Diversified’s continuing goal to provide it’s customers with the best, reliable, honest, quality, and fairly priced product possible, and to provide it’s employees long-term employment with fair income, job security, growth, and training with as many benefits as possible
What We Do
Products and Services
Blue Book Network Classifications
We can be found under the following Blue Book Network Classifications.
Our standard scope of services includes the following CSI Master Format™ code(s).
Commercial Construction Project Specializations
Associations & Memberships
ACCA (Air Conditioning Contractors of America)
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