Review sentiment: 50/100
Overview
Johnstone Supply lists furnace replacement among its store services and specializations. Combustion analyzers and CO detectors appear in their tools and testing inventory. Financing available is noted for higher-ticket equipment purchases. Davenport's cold winters increase demand for correctly commissioned gas furnaces. The store model supports contractor-grade parts and installation accessories locally.
Johnstone Supply sells and supports furnace replacement work, including gas and commercial furnace lines in Davenport. Combustion analyzers: their inventory lists carbon-monoxide detectors and combustion analyzers. Financing Available: their site notes financing options for equipment purchases.
Pros & cons
Pros
Services offered (self-reported)
Cons
- Smaller review history (20 Google reviews)
- Mixed customer sentiment (score 50/100)
When to choose them
- You need to finance the work
- You have a commercial property
Services
Service area
Contact & hours
📞
🌐
✉️
📍
🕒
Call for 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 (20 Google reviews); Mixed customer sentiment (score 50/100).
When should I choose Johnstone Supply?
Choose them if: You need to finance the work; You have a commercial property.
What is the Vouched Score for Johnstone Supply?
44/100. Top contributing signals: Google Rating 67/100+ Review Sentiment 50/100, Llm Score 40/100. 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 +1-563-388-7777. Address: 5001 N Brady St, Davenport, IA 52806, USA.
What does furnace replacement service typically cost when working with a Davenport, IA provider like Johnstone Supply?
Full gas furnace replacement typically runs $2,850–$6,200, and high-efficiency condensing furnace runs $4,300–$9,100 in Davenport, Iowa. These are area-wide market estimates, not Johnstone Supply's quotes. For an exact price, request a written estimate from Johnstone Supply.
Does Johnstone Supply do Furnace Replacement in Davenport, IA?
Yes. Johnstone Supply lists Furnace Replacement among its services and serves Davenport, IA and Replacement Davenport, IA. Call +1-563-388-7777 for a quote.
Does Johnstone Supply do Commercial HVAC in Davenport, IA?
Yes. Johnstone Supply lists Commercial HVAC among its services and serves Davenport, IA and Replacement Davenport, IA. Call +1-563-388-7777 for a quote.
Compare with nearby providers
| Provider | Vouched | Years | |
|---|---|---|---|
Johnstone Supply (this company) |
— | 4.0★ (20+) | — |
Gabrilson Indoor Climate Solutions ⭐ Highest Vouched Score · ⭐ Best for Combustion-Safe Installation · ⭐ Best for High-Efficiency (95%+ AFUE) Upgrades |
89/100 | 4.9★ (310+) | 80+ |
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Profile last updated July 27, 2026.