90
ExceptionalOFallon, Missouri · Heating & furnaces
Heating & furnace contractors in OFallon, MO
7 heating & furnace contractors in OFallon, out of 9 HVAC and plumbing businesses the Registry lists there. Ranked by Registry Score, owner-confirmed records first.
- Pros
- 7
- Avg. score
- 68.1
- Scored
- 7
Summary
Data last updatedAs of October 14, 2026, the ProComfort Registry lists 7 heating & furnace contractors in OFallon, Missouri. Most-listed specialties: air conditioning (6). 7 have enough public signals for a Registry Score, averaging 68.1 out of 100; 4 score 70 or higher. Together they hold 2,022 public reviews on Google, Yelp and Facebook. The highest-scored is Swiss Air Heating & Cooling LLC, at 90 out of 100. 2 are Featured for 2026. View Swiss Air Heating & Cooling LLC.
Counts come straight from the Registry's records. How the Registry Score works
Featured heating & furnace contractors in OFallon
74
StrongShowing 1–7 of 7
90
ExceptionalOFallon, MO 63366 4.9(919 reviews)
HVACHeatingA/C
80
Strong77
Strong74
StrongOFallon, MO 63366 4.4(128 reviews)
HVACHeatingA/C
57
EstablishedOFallon, MO 63366 4.3(4 reviews)
HVACHeatingA/C
50
Established49
DevelopingHeating & furnace contractors in OFallon: at a glance
- How many heating & furnace contractors are in OFallon, Missouri?
- As of October 14, 2026, the ProComfort Registry lists 7 heating & furnace contractors in OFallon, Missouri.
- Who is the highest-scored heating contractor in OFallon, Missouri?
- By Registry Score, Swiss Air Heating & Cooling LLC (OFallon, MO) ranks first at 90 out of 100, among 7 scored businesses averaging 68.1. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.
- Which companies are featured in OFallon, Missouri for 2026?
- ProComfort Registry features Swiss Air Heating & Cooling LLC, Reliable Heating & Cooling Inc.. Featured companies are selected editorially from public reviews and track record; listings and rankings are never sold.
- How are heating & furnace contractors in OFallon, Missouri ranked?
- By Registry Score (0-100, from public reviews, digital presence and reach), with records confirmed by their owners listed first. The full method is at https://procomfortregistry.online/methodology.
What this list includes: businesses whose public category or name points to heating: furnaces, boilers, heat pumps or radiant heat. Tags come from each business's public category and name, so a company can appear under several trades. Heating & furnace contractors across the US