HVAC companies in El Cajon, CA 92021
6 HVAC companies, with local market data for this ZIP.
General contractors 62Concrete and masonry 21Roofing and exteriors 20Remodeling 7HVAC 6Other construction trades 6Electricians 5Excavation and demolition 4Carpentry, drywall and windows 3Garage doors 3Painting 2Fences and decks 1
Area profitability, HVAC63 / 100Moderate market, balanced field
Typical home value$772,000−0.4% in the past year
New homes permitted, 202511,707San Diego County
Homeowners53.8%22,573 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Air Management SystemsHVAC contractor · 9302 Bond Ave, El Cajon(619) 390-7803 · airmanagementsystems.com
Mark's Heating and AirHVAC contractor · 1284 El Rey Ave, El Cajon(619) 204-7059 · marksheatingandair.com
Mauzy Heating, Air & SolarHVAC contractor · 9411 Bond Ave, El Cajon(619) 492-4144 · mauzy.com
On Point Heating & Air ConditioningHVAC contractor · 1209 N 2nd St Ste 103, El Cajon(619) 272-6055 · onpointheatingandair.com
Southwest Mechanical Services IncHVAC contractor · 1251 Greenfield Dr, El Cajon(619) 499-7743 · swhvacservice.com · 2 drivers, 1 truck
Weather MachinesHVAC contractor · 9303 Bond Ave Ste B, El Cajon(619) 443-9974 · weathermachines.net
HVAC in ZIP 92021 at a glance
Local building angle: San Diego County permitted 11,707 new homes in 2025, including 7,311 apartment units. 13% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.