Our HVAC service area in St. Thomas and nearby locations
Our technicians work throughout St. Thomas, including areas such as:
- Dalewood
- Fairview
- Freeman Lane
- Harvest Run
- Lynhurst
- Miller’s Pond
- Old Lynhurst
- Orchard Park South
- Shaw Valley


Achievements of Superior Plumbing




Brands We Repair










Winter in St. Thomas is the busiest season for heating repairs, and many homes here — especially the older houses around the downtown core — still run on aging furnaces and hot-water boilers. Our technicians repair, maintain and replace all types of heating equipment: gas and electric furnaces, boilers and heat pumps of every major brand, including Carrier, Lennox and Rinnai. If your heat goes out, we provide same-day furnace repair in St. Thomas and boiler repair in St. Thomas, including evenings and weekends. When a repair no longer makes sense, we help you choose an energy-efficient replacement and handle boiler installation or a new furnace from start to finish.

Proper ventilation is crucial for a healthy and comfortable indoor environment, especially in winter when windows stay closed for months. We install, repair and replace ventilation systems, HRVs and exhaust fans. If your system is noisy or not moving enough air, it could be due to dust buildup or worn-out components — our technicians quickly diagnose and fix the issue. We also clean ducts and vents to remove dust and allergens, improving indoor air quality and helping your furnace and air conditioner work more efficiently in your St. Thomas home or business.

We provide a full range of cooling services, including installation, repair, replacement and maintenance of central air conditioners, ductless mini-splits and heat pumps from trusted brands such as Daikin, Mitsubishi Electric and York. If your AC stops cooling during a humid Lake Erie summer, our team offers fast air conditioner repair in St. Thomas. Thinking about switching to a heat pump for year-round heating and cooling? Ontario homeowners may qualify for rebates — read our guide to heat pump rebates in Ontario, and our technicians will help you choose the right system for your home.

Superior Plumbing & Heating also takes care of the water side of your home comfort system: installation, repair and replacement of tank, tankless and hybrid water heaters from brands like Rheem, A.O. Smith and Bradford White. If you have no hot water or your tank is leaking, book water heater repair in St. Thomas. We also install water softeners and filtration systems that reduce hardness and protect your water heater and appliances.


Our technicians work throughout St. Thomas, including areas such as:
