Harster Heating & Air Conditioning
HVAC contractor in St Louis, MO 63123
About this company
Harster Heating & Air Conditioning is listed as an HVAC contractor at 9900 Gravois Rd in St Louis, Missouri, in St. Louis County. It is one of 14 HVAC companies in ZIP 63123.
Other HVAC companies nearby
Weis Comfort Systems9900 Gravois Rd, Saint Louis
Under 0.1 mi(636) 343-8440
H C Sharp Co8301 Crest Industrial Dr, St Louis
0.8 mi(314) 351-6900
Crestside Ballwin Heating & Cooling8130 Valcour Ave, Affton
0.9 mi(314) 351-8300
Affton Heating & AC7212 General Sherman Ln, St Louis
1.1 mi(314) 849-6887
Southtown Refrigeration Heating & Cooling7446 Gravois Rd, St. Louis
1.9 mi(314) 352-3029
Housing market around ZIP 63123
Figures describe the local area, not this company.
Typical home value$247,000+2.7% past year · +70% in 10 years
Typical rent$1,452+0.7% past year
12-month value outlook+2.2%
New homes permitted, 2025957St. Louis County
Days to sale agreement11St. Louis metro · 8 a year ago
Listings with a price cut29.2%St. Louis metro
Sale price vs list100.1%St. Louis metro
New construction sales128St. Louis metro, Aug · −14% 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: St. Louis County permitted 957 new homes in 2025, including 456 apartment units. 5% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.