Geothermal.contractors

Harvey W. Hottel, Inc. has provided commercial HVAC installation, design, and maintenance services from its Gaithersburg, Maryland headquarters at 18900 Woodfield Road since 1945. The family-owned firm specializes in commercial applications across municipal buildings, office complexes, educational facilities, and retail properties throughout the DC metropolitan area. Geothermal HVAC systems are among the technologies the company installs, delivering individual room control, 3–6× the efficiency of conventional units, and underground pipe systems projected to last up to 50 years. Harvey W. Hottel also installs variable refrigerant flow (VRF) systems for zone-specific temperature control in multi-unit commercial buildings. The company holds LEED-certified contracting credentials and employs licensed mechanical engineers and technicians. Operating continuously for over 79 years, Harvey W. Hottel combines long-standing regional relationships with modern commercial mechanical engineering capabilities. Verified active operator per https://www.harveyhottel.com/ (Bundle 4 audit 2026-05-28)