Johnstone Supply
HVAC contractor in Waterloo, IA 50701
About this company
Johnstone Supply is listed as an HVAC contractor at 329 W 6th St in Waterloo, Iowa, in Black Hawk County. It is one of 8 HVAC companies in ZIP 50701.
Other HVAC companies nearby
Mike Fereday Heating + Air Conditioning827 W 5th St, Waterloo
0.4 mi(319) 232-0900
Bergen Plumbing Heating & Cooling35 Fletcher Ave, Waterloo
1.6 mi(319) 234-1404
Fereday Heating And Air Conditioning1010 Broadway St, Waterloo
1.6 mi(319) 233-8411
Air Services Heating and Air Conditioning2213 Laporte Rd, Waterloo
2.3 mi(319) 287-5858
Young Plumbing & Heating750 S Hackett Rd, Waterloo
3.0 mi(319) 234-4411
Housing market around ZIP 50701
Figures describe the local area, not this company.
Typical home value$186,000+0.8% past year · +49% in 10 years
Typical rent$1,014+4.6% past year
12-month value outlook+2.1%
New homes permitted, 2025488Black Hawk County
Days to sale agreement12Waterloo metro · 12 a year ago
Listings with a price cut28.3%Waterloo metro
Sale price vs list98.3%Waterloo metro
New construction sales8Waterloo metro, Aug
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: Black Hawk County permitted 488 new homes in 2025, including 283 apartment units. 14% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.