HVAC demand is the most predictable thing in the trades and the least planned for. Every business knows summer is busy, and most still find themselves building campaigns in the first week of a heatwave, when competition is at its peak and there is no performance history to work from. A calendar fixes that. This one is built around Australian conditions, with notes for the difference between northern markets that cool most of the year and southern markets that run two distinct peaks.
How to use the calendar
Work backwards from demand rather than forwards from the current month. Whatever you want to be visible for in January must be built in September, because organic pages take months to gain traction and paid campaigns perform better with history behind them. Treat each block below as preparation for the season after it, not a response to the season you are in.
August to September: pre-summer build
This is the most valuable block in the year and the one most often skipped. Publish or refresh the installation content — ducted versus split, sizing, running costs, brands installed, what installation day involves — so it has time to be indexed and to gain traction before demand arrives.
Rebuild the paid campaigns now rather than in December. Refresh negatives, check landing pages, confirm call tracking works. Start the pre-season service push to your existing customer base: a reminder that a system unused since March should be checked before the first hot week converts well and fills a quiet month.
In northern markets this block matters less as a switch and more as a step-up, since cooling demand never truly stops.
October to November: installation quotes
Buyers are planning rather than panicking, which makes this the best window for installation work. Lift installation campaigns, promote quotes and site assessments, and make finance or payment terms visible if you offer them. Reviews collected now strengthen the profile before the peak.
Operationally, this is the time to confirm stock and installer availability, because quotes accepted in November become installations in December and a two-week lead time loses jobs to whoever can attend sooner.
December to February: summer peak
Repair takes priority. Budgets should be set so they are not exhausted by mid-morning during a heatwave, and campaigns should already be live rather than newly launched. Keep installation campaigns running but secondary.
Communication is the difference between a good peak and a damaging one. State current lead times on the profile and the website, answer the phone or use a service that genuinely does, and stop advertising for work you cannot attend. Unanswered calls during a spike turn into poor reviews that outlast the weather.
Keep asking for reviews through the busy weeks even though nobody feels like it — these are the weeks with the most completed jobs.
March to April: first shoulder season
Demand drops and most competitors go quiet, which makes this cheap and useful. Redirect budget from repair to maintenance plans, duct cleaning, filter replacement and post-summer service checks. Market to the customer base you have just expanded, because a system worked hard for three months is an easy service conversation.
Use the quiet weeks for the work that never fits during peak: new suburb pages, photography of recent installations, refreshing the Google Business Profile services and brands, fixing site speed, and reviewing which campaigns actually produced booked jobs over summer.
April to May: pre-winter build
In southern markets this is the second pre-season and it is treated far more casually than the first. Heating content — gas heating service, reverse-cycle heating, ducted heating repair, safety checks — needs to be live and visible before the first cold snap.
Gas heater safety checks are the strongest message of the year in Victoria, Tasmania and the ACT, and demand for them arrives suddenly. Prepare the campaign and the page in April, not in the week the first cold front lands.
June to August: winter peak
Heating repair leads in the southern states, with the same operating discipline as summer: budgets paced through the day, honest lead times, campaigns already warm. Reverse-cycle installation continues to sell well because buyers are thinking about both seasons at once, so keep the installation message running alongside repair.
In northern markets this is the natural planning window instead: maintenance contracts, commercial work, and the pre-summer preparation described above brought forward.
Year-round, regardless of season
Some work does not move with the calendar and should never be paused: reviews collected continuously, the Google Business Profile kept current, organic content published steadily, commercial and builder relationships maintained, and reporting reviewed monthly against booked jobs rather than enquiries.
The single most common mistake is switching marketing off in a shoulder season and restarting it during a peak. It costs more to restart than to maintain, the campaigns lose their history, and the installation quotes approved during the peak were researched during the quiet weeks you were invisible.
What to prepare a season ahead
Each block above has a preparation list that belongs in the season before it. Content written and published, landing pages checked, negatives refreshed, budgets agreed, photography updated, and the customer database segmented so service reminders can go out without a scramble. None of it is difficult; it simply cannot be done in the week demand arrives.
Put the preparation dates in the diary as recurring tasks rather than trusting memory. The businesses that do this consistently spend less per booked job than competitors bidding against them, because they are never buying visibility from a standing start.
Capacity is part of the plan
Marketing that outruns capacity is a cost, not a win. Before lifting budgets for a peak, decide how many jobs a day the team can genuinely attend, what happens to the overflow, and at what point advertising is paused. A waitlist with honest lead times protects the reviews that will carry you into next season; an unanswered phone does the opposite.
The same applies to installation. Quotes accepted faster than they can be installed create cancellations, so confirm stock and installer availability before the campaign lifts rather than after.
Building your own version
Take the shape above and adjust it to your climate, your mix of repair and installation, and your capacity. A business with three installers and one service van should weight the calendar towards installation planning; a service-heavy operator should weight it towards maintenance plans and repair readiness. Write it down, put the build dates in the diary a season ahead, and review it once a year against what the numbers actually did.
Our HVAC and air conditioning marketing page explains how we run the seasonal plan, and the trades marketing hub covers the fundamentals shared across trades. For the budget behind the calendar see what HVAC marketing costs in Australia, and for campaign structure see Google Ads for HVAC companies.
