Design Air Systems
HVAC contractor in Columbia, SC 29209
About this company
Design Air Systems is listed as an HVAC contractor at 6 Sandy Knoll Ct in Columbia, South Carolina, in Richland County. It is one of 7 HVAC companies in ZIP 29209.
Other HVAC companies nearby
Gervais Heating and Air120 Rose Dr, Columbia
1.0 mi(803) 540-5369
Comfort Services128 Sparkman Dr, Columbia
1.5 mi(803) 772-4490
Wilson's Refrigeration & Air128 Sparkman Dr, Columbia
1.5 mi(803) 772-4490
Trane Supply1510 Key Rd, Columbia
1.6 mi(803) 256-0727
Efficiency First502 Tyler St, Columbia
1.6 mi(803) 477-5729
Housing market around ZIP 29209
Figures describe the local area, not this company.
Typical home value$223,000+0.3% past year · +83% in 10 years
Typical rent$1,537+0.5% past year
12-month value outlook+0.6%Roughly flat
New homes permitted, 20253,382Richland County
Days to sale agreement32Columbia metro · 23 a year ago
Listings with a price cut33.5%Columbia metro
Sale price vs list98.2%Columbia metro
New construction sales235Columbia metro, Aug · −21% 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: Richland County permitted 3,382 new homes in 2025, including 864 apartment units. 31% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.