Can one HVAC company cover London and Kitchener-Waterloo with the same marketing?

Rarely with the same campaigns. They're separate map-pack markets an hour or more apart, with different competitors. If you serve both, run separate pages, profiles for genuinely staffed locations, and ad campaigns for each.

Which Southwestern Ontario towns grew fastest?

Between 2016 and 2021, Statistics Canada counts show the City of Waterloo up 15.7%, Woodstock up 13.6%, Kitchener and St. Thomas each up about 10%, and London up 10.0%. Sarnia grew 0.6%.

Is London a condo market or a house market?

Both. About 49% of London's homes were single-detached in 2021, but more than a fifth were apartments in buildings of five or more storeys, a higher share than Hamilton or Ottawa. Plan pages for both audiences.

What about rural Southwestern Ontario?

Rural townships and smaller towns can be worth serving, especially for propane and ground source heat pump work on larger lots. Drive times and low search volume mean you'll lean more on your Business Profile, referrals and reviews than on paid search.

HVAC Marketing in London and Southwestern Ontario

Southwestern Ontario has no single centre. It's a string of mid-sized markets along the 401 and 403, each with its own competitors and its own map pack. London is the largest, Waterloo Region is the fastest-growing cluster, and Windsor and Sarnia anchor the far west. We plan and run marketing for HVAC companies across the region; we are marketers, not contractors, and the work stays with your crews.

London: the region's largest single market

Short answer: a city of 422,000 that grew 10% between censuses and has more apartment towers than you might expect.

London counted 422,324 residents in the 2021 Census, up 10.0% from 2016, in 174,657 occupied homes. From the census dwelling-type table, we calculate about 49% single-detached houses, 13% row houses and about 21.5% apartments in buildings of five or more storeys.

The 2023 heating survey shows natural gas as the main heating energy for 61% of London-area households and electricity for 24%, one of the higher electric shares among Ontario metro areas. Forced-air furnaces were the primary system in 73% of homes. London therefore splits into two audiences: furnace-heated house owners, and electric-heat apartment and townhouse residents for whom ductless heat pumps can make sense.

The rest of Middlesex County grew too: the county as a whole reached 500,563 people, up 9.9%.

Waterloo Region and Guelph

Short answer: three cities sharing one fast-growing metro area, plus Guelph next door.

Kitchener grew 10.1% to 256,885, the City of Waterloo 15.7% to 121,436, and Cambridge 6.6% to 138,479. Waterloo Region as a whole reached 587,165. In the Kitchener-Cambridge-Waterloo area, 64% of households heated mainly with gas in 2023 and 71% used a forced-air furnace. Guelph, with 143,740 residents, had a lower gas share at 56%.

For marketing, treat Kitchener, Waterloo and Cambridge as distinct communities. Cambridge homeowners search for "Cambridge", and many also use the names of its older communities, Galt, Preston and Hespeler. Growth means a steady supply of new homeowners who haven't chosen a service company yet, which suits maintenance-plan offers.

Windsor, Sarnia and the far southwest

Short answer: detached-house markets with modest growth, where reviews and reputation carry more weight than ad budgets.

Windsor had 229,660 residents in 2021, up 5.7%, with about 60% of homes single-detached; 67% of Windsor-area households heated mainly with gas in 2023, and 78% used a forced-air furnace. Sarnia, at 72,047 and growing 0.6%, had about 67% of its homes single-detached. Chatham-Kent went further still, at about 76%, with roughly 104,000 people spread over more than 2,400 square kilometres, so drive time shapes every marketing decision there.

In slower-growing markets, the work is mostly replacing existing equipment. Your marketing should lean on reputation: reviews, local photos, years in the community and clear pricing guidance.

Growing towns between the cities

Short answer: Woodstock, St. Thomas and Stratford are small but growing, and often less contested online.

Woodstock grew 13.6% to 46,705, St. Thomas 10.1% to 42,840, and Stratford 5.6% to 33,232. Smaller towns like these often have fewer HVAC companies with strong websites and reviews. A company based in London or Kitchener can serve them well, but only with genuine local pages and reasonable response times; a page that just swaps in the town name won't hold.

How we'd market a Southwestern Ontario HVAC company

Short answer: one home market, done properly, before stretching along the highway.

Pick the home market (London, Waterloo Region, Windsor or Sarnia) and win its map pack.
Write for both housing types in London and Waterloo: furnace-replacement pages for houses and ductless heat pump pages for electric-heat apartments and townhouses.
Use rebates carefully. As of October 2026, the Home Renovation Savings Program lists rebates of up to $7,500 for qualifying cold-climate air source heat pumps.
Add one growth town at a time, with its own page, its own reviews and a realistic arrival time.
Stay inside your licences. ESA says businesses offering electrical installation services to the public must be licensed; keep electrical upgrades out of your ads unless you are.

Before adding a second city, read about expansion planning. For day-to-day growth, see local SEO, or compare with other Ontario regions.

HVAC marketing in London and Southwestern Ontario