Hosack Plumbing, Heating & Cooling
O'Fallon, MO Furnace Replacement · 25+ yrs
Overview
Hosack lists furnace installation and residential furnace changeouts among HVAC services. The company states over twenty-five years of combined industry experience. O'Fallon winters increase heating demand, and Hosack notes local service coverage. Hosack is a family-owned operation listed across its service pages.
Furnace replacement and HVAC installation in O'Fallon, MO, focusing on residential high-efficiency furnace changeouts. Website states over twenty-five years of combined industry experience across plumbing and HVAC services. Family-owned operation lists water heater installation and commercial plumbing among offered services.
Score breakdown
Composite of public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment of provider profile. See full methodology →
Pros
- High Google rating (4.9★ across 735+ reviews)
- Long-established (25+ years in business)
When to choose them
- You prefer a family-owned operation
- You want a top-rated provider with substantial review history (4.9★, 735+ reviews)
- You value a long-tenured local operator (25+ years in business)
Services
Service area
Contact & hours
Frequently asked questions
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Profile last updated July 26, 2026.