Review sentiment: 60/100
Overview
Johnstone Supply lists ERV/HRV ventilation equipment and installation offerings. The store notes whole-home air cleaners and media filtration products. The company advertises financing availability for qualifying projects. In Waterloo's humid summers and cold winters, ventilation and humidity control matter for IAQ.
Johnstone Supply is a local HVAC wholesaler listing ERV/HRV ventilation equipment for whole-home installations. Air Purification products are listed, including whole-home air cleaners. Financing Available is advertised for IAQ purchases. The website also lists a satisfaction guaranteed policy.
vs. Waterloo average
| Signal | Johnstone Supply | Waterloo avg | Delta |
|---|---|---|---|
| Google rating | 4.2★ | 4.7★ | -0.5 vs avg |
| Review volume | 10+ | 85+ | -77 vs avg |
Pros & cons
Pros
Services offered (self-reported)
Cons
- Smaller review history (11 Google reviews)
- Mixed customer sentiment (score 60/100)
When to choose them
- You need to finance the work
Service area
Contact & hours
📞
🌐
✉️
📍
🕒
Call for current hours
Frequently asked questions
What are the pros of Johnstone Supply?
Based on public records and customer reviews: Financing available.
What are the cons of Johnstone Supply?
Concerns flagged from public records and reviews: Smaller review history (11 Google reviews); Mixed customer sentiment (score 60/100).
When should I choose Johnstone Supply?
Choose them if: You need to finance the work.
What is the Vouched Score for Johnstone Supply?
46/100. Top contributing signals: Google Rating 73/100+ Review Sentiment 60/100, Llm Score 38/100. 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 +1-319-233-0525. Address: 2661 Geraldine Rd, Waterloo, IA 50703, USA.
What does indoor air quality service typically cost when working with a Waterloo, IA provider like Johnstone Supply?
Whole-house HEPA air purifier typically runs $1,400–$3,700, and UV-C germicidal lamp runs $275–$1,100 in Waterloo, 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 | Years | |
|---|---|---|---|
Johnstone Supply (this company) |
— | 4.2★ (10+) | — |
| 71/100 | 4.6★ (75+) | 26+ | |
| 64/100 | 4.5★ (50+) | 21+ | |
| 77/100 | 4.9★ (130+) | 10+ |
Listed in
Explore more
Profile last updated July 27, 2026.