LEONHARDT COMPANY, INC

The complexities of hospital, research lab, and pharmaceutical HVAC systems require the knowledge and experience of trained testing and balancing personnel.  In an environment where maintaining a pressure differential between rooms is critical, incorrect balancing can lead to employee safety concerns and product contamination. 

Since 1952, we've specialized in testing, adjusting, and balancing (TAB) of HVAC systems, with a special emphasis on engineering surveys, troubleshooting and rebalancing of existing systems.

Abbott Bioresearch Center
Worcester, MA

Akamai Technologies
Cambridge, MA

Analog Devices
Wilmington, MA

AstraZeneca
Westborough, MA

Beth Israel Hospital
Boston, MA

Blue Cross/Blue Shield
Boston, MA

Brigham & Women's Hospital
Boston, MA

Boston College Science Center
Chestnut Hill, MA

Brandeis University
Waltham, MA

Brown University
Providence, RI

Centerra Biolabs
Lebanon, NH

Children's Hospital
Boston, MA

Dartmouth College
Hanover, NH

Fidelity Investments
Merrimack, NH

Genetics Institute
Andover, MA

Gentex Optics, Inc.
Dudley, MA

Genzyme
Framingham, MA

Gillette
South Boston, MA

Honeywell, Inc.
Newton, MA

Harvard University
Cambridge, MA

Lotus Development Corp.
Cambridge, MA

Massachusetts Institute of Technology
Cambridge, MA

Massachusetts General Hospital
Boston, MA

Millipore Casting Facility
Jaffrey, NH

Motorola
Mansfield, MA

New England Medical Center
Boston, MA

Newton-Wellesley Hospital
Newton, MA

Polaroid
Waltham, MA

Reebok World Headquarters
Canton, MA

Spectra, Inc.
Keene, NH

Technology Square
Cambridge, MA

Two Biotech (Mass Biotech Research Park)
Worcester, MA

U-Mass Medical Center
Worcester, MA