About Emjay Engineering & Construction Co
Emjay Engineering & Construction Co. is a privately owned mechanical and general contracting firm serving Baltimore, Maryland, DC and Virginia, in business since 1954. Its office is at 1706 Whitehead Road. The work is institutional, commercial and industrial: commercial HVAC, air distribution, gas installation, commercial plumbing and healthcare facility specialties, with a service department that provides after-hours commercial HVAC and plumbing service. This is a commercial contractor, so homeowners should confirm before calling. Rated 4.3 from 11 Google reviews, nine of them five stars.
Services and details
Emergency service
Yes
No information yet on installs heat pumps, load calculation (Manual J), energy audit or air sealing, ductwork, ductless mini-splits, geothermal, cold-climate heat pumps, dual-fuel or hybrid systems, furnaces and boilers, rebate and EmPOWER help, financing, maintenance plans, nATE-certified technicians, states license and insurance. The website did not say; call and ask.
Contact
- (410) 298-2000
- 1706 Whitehead Rd, Gwynn Oak, MD 21207
- Website
- View on Google Maps
Listing compiled from public sources on 2026-10-18. Report a correction or request removal. Back to heat pump installers in Gwynn Oak.