2939 E. Broadway Blvd.
Tucson, AZ 85716-5311

520 881-4546
Fax 795-1822
info@glhn.com

 
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Established in 1963, GLHN is a single-office, employee-owned firm in Tucson, Arizona offering complete consulting, design, and construction period services in Architecture, Mechanical, Electrical, and Civil Engineering.

We have a staff of over 50 full-time employees, including LEED Accredited Professionals, Certified Energy Managers (CEM), Energy Reduction Analysts, Commissioning Agents (Cx), personnel Certified in Plumbing Engineering (CIPE), and Lighting Certified (LC) staff.

60% of GLHN's income is generated in the higher educational sector. The firm has worked at over two dozen campuses nationwide and is dedicated to helping universities reduce their net greenhouse gas emmissions and meet their Presidents Climate Commitment.

30% of the firm's revenue is earned by governmental contracts, primarily the Department of Veterans Affairs, for which GLHN has been working continuously since 1975, performing services at over 100 VA medical centers nationwide. Other governmental contracts include numerous counties and municipalities throughout Arizona.

GLHN Profile

GLHN excels at campus utility master planning, underground utility systems and buried pipe, medical/laboratory design, large-scale municipal vehicle maintenance facilities, LEED/sustainable design, and systems commissioning. GLHN is also developing a specialization in the design of alternative fuel facilities, like E85 stations and campus solar energy.