Ontario gives HVAC companies a predictable year: a long heating peak, a shorter cooling peak and two planning windows in between. The mistake most owners make is spending the same amount every month, or spending nothing until the phones go quiet. This guide lays out a calendar you can adapt to your region, with a worked budget split and a to-do list for each phase. We're a marketing service, not a contractor; the calendar is about marketing, not technical work.
The four phases of an Ontario HVAC year
Short answer: heating peak, spring planning window, cooling peak, fall preparation.
Southern Ontario has cold winters moderated near the Great Lakes and humid summer spells. Northern Ontario has longer, colder heating seasons. Natural gas was the primary heating energy for 58% of Ontario households in 2023, according to Statistics Canada, so the heating season drives most of the year's revenue for most companies.
| Phase | Typical months (south) | What homeowners do | What your marketing does |
|---|---|---|---|
| Heating peak | Late October to March | Call about no-heat, then replace failing furnaces and boilers | Maximum ad budgets, emergency visibility, review collection |
| Spring planning | April to June | Get replacement and heat pump quotes before summer | Rebate content, quote campaigns, SEO groundwork |
| Cooling peak | July and August | Call about failed air conditioners | Cooling ads in hot weeks, quick response messaging |
| Fall preparation | September to mid-October | Book tune-ups, plan replacements | Maintenance offers, replacement content, budget ramp-up |
In the North, stretch the heating peak at both ends and shrink the cooling peak. Your own call history should set the exact dates.
A worked budget split
Short answer: weight the year toward the peaks, but never go dark.
Imagine a southern Ontario company with an annual ad budget of $48,000, and a northern company with $24,000. Here's one reasonable split, as a share of the annual total:
| Month | Southern company | Northern company |
|---|---|---|
| January | 11% | 12% |
| February | 10% | 11% |
| March | 8% | 9% |
| April | 6% | 6% |
| May | 6% | 5% |
| June | 7% | 5% |
| July | 9% | 5% |
| August | 8% | 5% |
| September | 6% | 8% |
| October | 9% | 11% |
| November | 10% | 12% |
| December | 10% | 11% |
For the southern company, January's 11% is $5,280 and May's 6% is $2,880. For the northern company, November's 12% is $2,880 and July's 5% is $1,200. These are starting points; after one full year, replace them with shares based on where your booked jobs actually came from.
One rule overrides the table: if your crews are fully booked, cut ad spend for that week. Buying calls you can't answer only feeds your competitors.
Phase 1: the heating peak (late October to March)
Short answer: be visible for emergencies, answer every call, and collect reviews while you're in the most homes.
- Ads: raise budgets for no-heat and furnace repair terms on the first cold nights. Run call-only or call-focused ads during staffed hours. Split budgets by town group so one busy area doesn't drain the rest.
- Business Profile: confirm holiday hours, post emergency availability, and add photos from real jobs.
- Reviews: this is your biggest review season. Ask every satisfied customer, every time, with a simple text or email link. Reply to every review within a few days.
- Content: publish or update your furnace replacement and boiler pages with honest cost guidance, because many no-heat calls turn into replacement conversations.
- Follow-up: quote replacements promptly. Under Canada's anti-spam law, commercial texts and emails need consent, identification and a way to unsubscribe, so keep follow-ups tied to the customer's own request.
Phase 2: the spring planning window (April to June)
Short answer: this is when replacement and heat pump decisions get made, so it's your best content season.
- Rebate content: update your heat pump rebate page. As of October 2026, Save on Energy's Home Renovation Savings Program lists rebates of up to $7,500 for qualifying cold-climate air source heat pumps. Re-check the program page each spring before you advertise.
- Quote campaigns: shift ad budgets from emergency terms to replacement and heat pump quote terms.
- SEO groundwork: spring is the ideal time to add service and area pages, fix site speed and build citations, because they'll mature before fall.
- Maintenance plans: offer spring air-conditioner tune-ups as a way into new households.
Phase 3: the cooling peak (July and August)
Short answer: short, sharp and weather-driven in the south; small in the North.
- Ads: increase air-conditioner repair budgets during hot, humid spells and pull back when temperatures ease. Heat pump terms work here too, since one system covers both seasons.
- Response time: in a heat wave, the first company to call back usually gets the job. Make sure texts and calls are answered quickly.
- Content: publish air-conditioner replacement and heat pump comparison pages that will keep earning traffic into the next spring.
- Northern companies: use summer for planned replacements and installations, and market those slots in spring.
Phase 4: fall preparation (September to mid-October)
Short answer: fill the maintenance calendar and warm up the ad account before the cold arrives.
- Tune-up offers: push furnace and boiler maintenance to existing customers and new homeowners.
- Ramp-up: increase budgets gradually through October so your campaigns have fresh data when demand jumps.
- Audit: check tracking, call routing and after-hours coverage before the peak.
- Review the year: compare booked jobs by month against last year and adjust the budget split.
Common calendar mistakes
Short answer: reacting late, going dark, and ignoring the North's longer season.
- Waiting for the first cold snap to start ads. Campaigns launched on the day demand spikes have no data and often overpay.
- Switching everything off in spring. That's when the most valuable replacement quotes are requested.
- Copying a Toronto calendar in Sudbury or Thunder Bay. Northern heating seasons are longer; budgets should follow.
- Starting SEO in November. It won't help much until the next season. Start in spring.
For the services behind each phase, see seasonal Google Ads and rebate marketing. For regional detail, check the areas pages, and browse our other guides.
Frequently asked questions
When should an Ontario HVAC company spend the most on ads?
For most southern companies, the heaviest months are the fall and winter heating peak, with a second, shorter peak in the hottest summer weeks. Northern companies usually weight even more of the year toward heating.
When should an Ontario HVAC company start SEO?
Spring or early summer, if you can choose. Pages and reviews built then have months to mature before the fall heating peak, when they're worth the most.
Should we stop advertising in quiet months?
Reduce rather than stop. Shoulder months are when homeowners plan replacements and heat pump upgrades, and lower competition often means cheaper clicks.
How do we adjust the calendar for our own region?
Use your own call history. Pull calls by week for the last two years, mark the peaks, and shift the calendar to match. Your records beat any general guide.