Lambton · Middlesex · Chatham-Kent · Elgin
Your Heating And Cooling Team In Sarnia
Furnaces, air conditioners, heat pumps, and water heaters. Installed, repaired, and maintained by one experienced family across Sarnia and southwestern Ontario, with emergency service 24/7.
Open 8 AM to 5 PM. Emergency service available 24/7.
Heating, cooling, and hot water
Seasonal offers
Offers cannot be combined. Confirm current terms when you book.
A family-run contractor that does the work itself
Mythic Heating and Cooling is based in Sarnia and serves Lambton, Middlesex, Chatham-Kent, and Elgin. The owners quote the job and the owners do the job.
Our certified technicians diagnose the actual fault, explain it in plain language, and give you the options with real numbers attached. No upselling, and the invoice matches the quote.
Licensed & insured
Licensed Ontario HVAC contractor, TSSA registered, fully liability covered.
24/7 emergency service
Most Sarnia-area calls reached the same day.
Written flat-rate pricing
You approve the quote before any work begins.
Workmanship warranty
Every install and repair is guaranteed by us, not just the manufacturer.
The Mythic difference
Six reasons homeowners across southwestern Ontario call us first.
What our customers say
Verified reviews from homeowners across Lambton, Middlesex, Chatham-Kent, and Elgin.
" Cass and the team were fantastic. Courteous, knowledgeable, and the new furnace was installed in a timely manner. Highly recommend. "
" They explained everything in plain language and gave me clear options before starting. No pressure, no surprises on the invoice. "
" Our AC quit in a heat wave and they were out the same day. Friendly, respectful, and left the place spotless. These guys are the real deal. "
Our trusted brands
We install and service the systems we trust in our own climate, chosen for reliability, efficiency, and strong warranties.
Simple from first call to final test
Call or request a quote
Tell us what is going on. We book a visit that fits your schedule, with emergency slots when it cannot wait.
Clear diagnosis and honest price
We assess the system, explain what we find in plain language, and quote before any work starts.
Done right, tested, and tidy
We complete the work, test the system, and leave your home the way we found it.
Service areas
We dispatch from Sarnia across four counties: Lambton, Middlesex, Chatham-Kent, and Elgin. Find your community below.
Need heating or cooling fixed today?
Call the owners directly for a diagnosis and a written price. Same team on every visit, across Sarnia and southwestern Ontario.