Creating Comfort is Happiness

County Lines HVAC & Fireplaces has the products and installation expertise to enhance the appeal of any property.

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Heating and Cooling Solutions in St. Thomas

County Lines HVAC & Fireplaces is your convenient source for heating and cooling services in St. Thomas and the surrounding area. Our family-owned and operated business accommodates the needs of both residential and commercial customers. If you have a request related to the operation and efficiency of your HVAC system, or any of its components, we’re the team to call! Get in touch during business hours, or feel free to send us an email at any time. We deliver prompt, professional service and are willing to meet the demands of your schedule. No job is too big or too small for our attention.

We specialize in all of the following:

  • New fireplaces and custom installations
  • Heating system repairs and maintenance
  • Commercial HVAC solutions
  • Propane, natural gas, electric and hot-water heating equipment
  • System replacements
  • Residential service calls
  • Air conditioning service
  • Refrigeration repair

Our business is all about keeping you comfortable through the seasons. Our friendly, reliable service and quality range of products have made us the preferred go-to HVAC specialist for many customers.

Call 519-902-3435
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Professional Affiliations

Efficient Climate Control for Your Comfort

Traditional fireplace

See What’s Hot

Visit our fireplace showroom to discover a range of innovative heating options.

modern fireplace

Don’t Lose Your Cool

Proper maintenance and the right equipment can significantly reduce your air conditioning bill.

cozy spot by the fireplace

Stay Cozy

Nobody wants to live without hot water. Avoid unexpected emergencies with our professional servicing.


43 Ross St. Unit #3

St. Thomas, ON N5R 3X6



Monday 08:00 AM - 05:00 PM

Tuesday 08:00 AM - 05:00 PM

Wednesday 08:00 AM - 05:00 PM

Thursday 08:00 AM - 05:00 PM

Friday 08:00 AM - 05:00 PM

Showroom By Appointment Only

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