HVAC companies in Darlington, MD 21034
1 HVAC companies, with local market data for this ZIP.
Area profitability, HVAC55 / 100Moderate market, crowded field
Typical home value$449,000+4.1% in the past year
New homes permitted, 2025715Harford County
Homeowners89.8%1,161 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Ground Loop Heating and Air ConditioningHVAC contractor · 1701 Whiteford Rd, Darlington(410) 836-1706 · groundloop.com · 4 drivers, 1 truck
HVAC in ZIP 21034 at a glance
Local building angle: Harford County permitted 715 new homes in 2025, including 137 apartment units. 23% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.