Johnstone Supply

Name: Johnstone Supply
Address: 1401 Cunningham Dr, Sioux City, IA, 51106, US
Telephone: +1-712-277-2200
Price range: $$
Rating: 4.7

Sioux City, IA Indoor Air Quality

★ 4.7 · 10+ Google reviews · 📍 1401 Cunningham Dr, Sioux City, IA 51106, USA

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+1-712-277-2200 Visit website

Review sentiment: 78/100

Overview

Johnstone Supply lists whole-home air purification products on its Sioux City store page. The store lists ERV/HRV ventilator equipment and related components. Contractor tools and contractor-account options are highlighted on the local store site. Sioux City seasonal humidity and cold winters make ventilation and dehumidification relevant to local IAQ projects.

Wholesale HVAC distributor focused on IAQ products for contractors in Sioux City, IA. ERV/HRV Ventilator stock is listed on the local store page. Air Purification product listings include whole-home air cleaners and media filtration options.

Score breakdown

Editorial Review 46 48%

Google Rating 90 18%

Local Search Rank 32 10%

Review Sentiment 78 16%

Review Volume 30 10%

Composite of public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment of provider profile. See full methodology →

Cons

Smaller review history (12 Google reviews)

Service area

Sioux City, IAhome

Services Sioux City, IAhome

Office: 1401 Cunningham Dr, Sioux City, IA 51106, USA

Neighborhood: 1401 Cunningham Dr, Sioux City, IA 51106, USA

Contact & hours

📞

+1-712-277-2200

🌐

johnstonesupply.com/store339

✉️

[email protected]

📍

1401 Cunningham Dr, Sioux City, IA 51106, USA

🕒

Call for hours

Frequently asked questions

What are the cons of Johnstone Supply?

Concerns flagged from public records and reviews: Smaller review history (12 Google reviews).

What is the Vouched Score for Johnstone Supply?

56/100. Top contributing signals: Google Rating 90/100+ Review Sentiment 78/100, Llm Score 46/100. The score blends public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment.

How can I contact Johnstone Supply?

Call Johnstone Supply at +1-712-277-2200. Address: 1401 Cunningham Dr, Sioux City, IA 51106, USA.

What does indoor air quality service typically cost when working with a Sioux City, IA provider like Johnstone Supply?

Whole-house HEPA air purifier typically runs $1,350–$3,600, and UV-C germicidal lamp runs $270–$1,100 in Sioux City, Iowa. These are area-wide market estimates, not Johnstone Supply's quotes. For an exact price, request a written estimate from Johnstone Supply.

Compare with nearby providers

Provider	Vouched	Google	Years
Johnstone Supply (this company)	56/100	4.7★ (10+)	—
Farrell's Heating & AC	64/100	4.4★ (65+)	50+
Excel Comfort Inc	81/100	4.9★ (200+)	9+

Listed in

Best Indoor Air Quality in Sioux City, IA

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Profile last updated July 27, 2026.