Sinclair Air Systems
HVAC contractor in Covina, CA 91723
About this company
Sinclair Air Systems is listed as an HVAC contractor at 721 E San Bernardino Rd in Covina, California, in Los Angeles County. It is one of 12 HVAC companies in ZIP 91723.
Other HVAC companies nearby
R.E. Aire824 E Edna Pl, Covina
0.2 mi(626) 962-5578
Wintri546 E Edna Pl, Covina
0.2 mi(626) 777-7773
Rayne Water Conditioning1018 E Cypress St, Covina
0.5 mi(626) 966-7521
Efficient Incorporated101 N Citrus Ave, Covina
0.9 mi(626) 901-4822
Efficient Heating and Air Conditioning101 N Citrus Ave #2D, Covina
0.9 mi(626) 507-9082
Housing market around ZIP 91723
Figures describe the local area, not this company.
Typical home value$795,000+0.8% past year · +89% in 10 years
Typical rent$2,320+2.7% past year
12-month value outlook+1.5%
New homes permitted, 202522,250Los Angeles County
Days to sale agreement26Los Angeles metro · 28 a year ago
Listings with a price cut24.4%Los Angeles metro
Sale price vs list99.9%Los Angeles metro
New construction sales217Los Angeles metro, Aug · +5% from last year
Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.
Typical home value, last 10 years
Source: Zillow Home Value Index, Sep 2026.
Local building angle: Los Angeles County permitted 22,250 new homes in 2025, including 10,633 apartment units. 6% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.