Frank Cullen Inc.

4.9(54 reviews on Google)

Heat Pump Installer listing in Sterling, VA

About Frank Cullen Inc.

Frank Cullen Inc. has served Loudoun County since 1986 and says it has more than 30 years of experience. Residential work covers heating and AC installation, repair, replacement and tune-ups, Carrier equipment, and WaterFurnace geothermal systems. Technicians service all brands and respond to emergency calls as well as routine maintenance, and the Homerun Service Agreement keeps a home running at peak efficiency through the hottest and coldest weather. Rated 4.9 from 54 Google reviews, 52 of them five stars. Business hours are not posted. Sales, installation, repair and maintenance are all handled in-house, and residential customers can request service online. Frank B. Cullen was the original founder. WaterFurnace geothermal systems are promoted as saving up to 70% on heating, cooling and hot water costs.

What reviewers mention: maintenance plan (7), fair pricing (5), office staff (5), quick response time (4), responsive crew (3), explaining issues (3), scheduling (3), heat pump unit replacement (2), technician support (2), thoroughness (2)

Services and details

  • Geothermal

    Yes

  • Furnaces and boilers

    Yes

  • Emergency service

    Yes

  • Maintenance plans

    Yes

No information yet on installs heat pumps, load calculation (Manual J), energy audit or air sealing, ductwork, ductless mini-splits, cold-climate heat pumps, dual-fuel or hybrid systems, rebate and EmPOWER help, financing, nATE-certified technicians, states license and insurance. The website did not say; call and ask.

Compare across the DMV:

Contact

Other heat pump installers in Sterling

All 45 heat pump installers in Sterling

Listing compiled from public sources on 2026-10-18. Report a correction or request removal. Back to heat pump installers in Sterling.