Seasonal Maintenance Reminders: The Easiest Revenue You're Not Collecting

Why Seasonal Reminders Are the Highest-ROI HVAC Marketing Activity

Most HVAC marketing is about finding new customers — Google Ads, SEO, door hangers, truck wraps. All of these are valuable, but they're expensive and competitive. Seasonal maintenance reminders are different: they target people who already know you, already trust you, and already have an HVAC system that needs service. The cost to send them is negligible. The conversion rate is dramatically higher than any cold marketing channel. In Phoenix, AZ, where summer temperatures regularly exceed 110°F, a spring AC tune-up reminder sent to 500 past customers in March will generate 50 to 100 booked appointments at a cost of less than $50 in SMS fees. In Denver, CO, the same campaign sent in September for furnace checks produces nearly identical results. No other marketing activity comes close to this ROI.

The Four Seasonal Campaigns Every HVAC Company Should Run

• 1Spring AC Tune-Up (March–April): Target all customers with central air conditioning. Offer a discounted pre-season tune-up to ensure their system is ready before the heat arrives. This is your highest-volume campaign.
• 2Fall Furnace Check (September–October): Target all customers with gas or electric furnaces. Offer a safety inspection and tune-up before the heating season. Urgency is natural — nobody wants their furnace to fail in January.
• 3Summer Filter Reminder (June–July): A lighter-touch campaign reminding customers to change their filters mid-season. Low conversion but builds goodwill and keeps your brand top of mind.
• 4Winter System Health Check (December–January): Target customers in mild-winter markets like Atlanta, GA and Houston, TX where heating systems are used less frequently and often neglected. Also a good time to promote heat pump maintenance.

Building Your Seasonal Reminder List From Past Customers

The foundation of a seasonal reminder campaign is a clean, segmented customer list. Start by exporting all customers from your CRM or job management software. Filter by equipment type — separate AC customers from furnace customers from heat pump customers. Then filter by last service date to prioritise customers who are most overdue. For customers whose equipment age you know, add an additional segment for systems that are 8 to 12 years old — these customers are prime candidates for a replacement conversation in addition to a tune-up. In Toronto, ON and Dallas, TX, HVAC companies that segment their lists this way see 30 to 40 percent higher campaign response rates than those that send the same message to everyone.

Exact Message Templates for Spring and Fall Campaigns

Spring AC tune-up SMS: 'Hi [Name]! Summer's coming fast in [City]. Want to make sure your AC is ready? We're booking spring tune-ups now — $89 for existing customers. Reply YES to grab a spot or book here: [link]. — [Company Name]' Fall furnace check SMS: 'Hi [Name], [Company Name] here. Before the cold hits, we want to make sure your furnace is running safely. We have fall tune-up slots available this month — $79 for existing customers. Reply YES or book here: [link]' Email subject lines that work: 'Is your AC ready for summer?' / 'Don't let your furnace fail this winter' / '[Name], your annual HVAC check-up is due.' The email version should include a brief explanation of what the tune-up covers, a customer testimonial, and a prominent booking button.

Timing Your Campaigns for Maximum Response Rate

Timing is critical. Send spring AC campaigns in late March or early April — before the first hot days, when the urgency is building but schedules aren't yet full. Send fall furnace campaigns in late September or early October — before the first cold nights, when the reminder feels timely rather than premature. For SMS campaigns, send on Tuesday, Wednesday, or Thursday between 10am and 2pm local time. These windows consistently produce the highest open and response rates. Avoid Mondays (people are catching up from the weekend), Fridays (people are winding down), and evenings (too intrusive). In competitive markets like Seattle, WA and Houston, TX, getting the timing right can double your response rate compared to sending at suboptimal times.

Upselling Maintenance Agreements Through Seasonal Campaigns

A seasonal tune-up is the perfect entry point for a maintenance agreement upsell. The customer is already in a service mindset, they've just experienced your work firsthand, and they're open to solutions that prevent future problems. A maintenance agreement that covers two annual tune-ups, priority scheduling, and a parts discount is an easy sell at this moment. The pitch is simple: 'While we're here — we offer a maintenance plan that covers your spring and fall tune-ups plus priority scheduling for $149 per year. Most customers save more than that on their first repair call alone. Want to add it today?' In Atlanta, GA and Denver, CO, HVAC companies that pitch maintenance agreements during seasonal tune-ups convert 25 to 40 percent of customers into agreement holders — creating predictable recurring revenue that smooths out the seasonal peaks and valleys.

Automating Seasonal Campaigns So They Run Every Year

The goal is to build a system that runs your seasonal campaigns automatically, year after year, without anyone having to remember to set them up. In GoHighLevel, you can create annual recurring workflows that fire on a specific date each year — March 15 for the spring campaign, September 15 for the fall campaign. The workflow pulls all customers tagged as 'AC customer' or 'furnace customer' who haven't had a service in the past 10 months, and sends them the appropriate campaign message. New customers added throughout the year are automatically included in future campaigns. Once the system is built, it runs indefinitely without any manual effort — generating $20,000 to $50,000 in revenue twice a year from customers you already have.