The September HVAC Maintenance Agreement Campaign: Reactivating Your Past-Customer List

September is the month your past-customer list is worth the most. Here is how to work it into signed maintenance agreements before the heating calls start.

Your dispatch board is thinning out. The August emergency calls are done, the heating calls have not started, and your technicians have capacity while the phone is quiet. Most HVAC shops spend that window buying leads. The cheaper move is sitting in your CRM: every customer you have ever sold a repair or an install to, and never sold a maintenance agreement to.

Why is September the right month to sell maintenance agreements?

September is the one month where your capacity, your customer's motivation, and the agreement product line up. Technicians have open slots. Homeowners have just paid a summer cooling bill and are about to run the furnace. And the agreement's first tune-up can be scheduled immediately rather than promised for spring.

ACCA's own framing is blunt: HVAC is a seasonal industry, and during the slower months service agreements are what carries steady income into the business. The trade press says the same thing in operational terms — because the contractor controls the maintenance calendar, that planned work can be scheduled into the slower spring and fall shoulder seasons when emergency volume drops. Recurring revenue is the obvious benefit. The one that saves your October is having work on the board at all.

A maintenance agreement campaign is a scheduled outbound push to your existing customer list, selling the agreement itself rather than a repair — worked in the shoulder season, when you have the capacity to deliver the first tune-up right away.

How big is the opportunity inside a past-customer list?

Every name on that list was already paid for. You bought the click, answered the call, sent the truck. Harvard Business Review's summary of the research is that acquiring a new customer runs five to 25 times more expensive than retaining an existing one, with the honest caveat that the multiple depends on the study and the industry. The same piece cites Bain's finding that a 5% lift in retention moves profit 25% to 95%.

There is a second reason the list is unusually live this September. A DuraPlas survey covered by ACHR News in June found that 50% of homeowners planned to skip HVAC maintenance this summer on economic grounds, with 99% of respondents saying they had changed their cooling and spending habits. Treat that as directional — it is a vendor-sponsored survey and the coverage does not publish a sample size. But half a market that deferred maintenance through a hot summer is walking into heating season on an unserviced system.

What conversion rate should an HVAC contractor expect?

The most-cited residential benchmarks come from Ron Smith's service agreement series in HVACR Business. They are practitioner benchmarks from one operator with a long track record, published in 2022 — not survey data — so use them as targets to measure against, not as forecasts.

The gap between 25% and 70% is the whole strategy. A technician pitching an agreement at the end of a repair is asking a homeowner who is already annoyed about a bill. A specialist pitching at the end of a low-priced tune-up — Smith puts that tune-up at $69 to $89 — is asking someone who just watched you do good work for very little money. Your September campaign should sell the tune-up, not the agreement. The agreement closes at the kitchen table afterward.

How do you actually run the September campaign?

Four steps, and the first one is the only one that takes real thought. This is the same structure we use in the general 30-day lead reactivation campaign, pointed at customers instead of unsold estimates.

1. Pull the right list

You want customers, not leads. Pull everyone with a completed job in the last three to five years who does not currently hold an agreement. Then strip out anyone who opted out, anyone whose equipment your technicians have already written off, and duplicates across phone and email.

• Repair customers from the last two summers — highest intent, they have already paid you to fix something
• Install customers past their first year — the warranty conversation is a natural opening
• Agreement customers who lapsed and never renewed — the easiest sale on the list
• Tune-up-only customers who never converted — the 70% benchmark applies to exactly this group

2. Sell the tune-up

Smith is direct about this: advertising service agreements does not work, and he spent real money proving it. Homeowners respond to tune-up offers. Lead with a priced heating tune-up before the first cold snap, and let the technician present the agreement once the system is running right.

3. Work the list on more than one channel

Smith found direct mail the most effective single channel, and that a follow-up phone call placed immediately after the mail drop lifted response 25% to 50%. The modern version of that sequence is email and SMS with a call on any engagement. The mechanic that matters has not changed: the second touch, on a different channel, within days.

4. Book it the same day

A reactivated customer behaves like a fresh lead — the reply window closes fast. Whoever owns the inbox needs to be booking on the calendar, not logging a callback. The full CRM-side version of this sits in our HVAC database reactivation playbook.

Is it legal to text past customers about a maintenance agreement?

Prior customers are not automatically fair game. The TCPA governs autodialed calls and texts regardless of whether someone bought from you, and consent, honored opt-outs and quiet hours all apply to a September campaign. One narrow piece of the rulebook did move: the FCC extended the effective date of section 64.1200(a)(10) to January 31, 2027, and only for the requirement that an opt-out on one type of message applies to unrelated messages from the same caller. The order is explicit that it changes nothing else about revocation.

In practice: honor every opt-out you receive, keep your consent records, and do not read the waiver as permission to text someone who told you to stop. We walk through what actually applies to old records in the TCPA rules for texting old leads. This is general information, not legal advice — run your campaign language past your own counsel.

What happens if you skip September?

The list does not disappear. It gets more expensive to work. In January those same homeowners are calling somebody at 9pm with no heat, and you are competing on availability against every other shop in the county — or paying for the click that brings them back. The agreement you sell in September for the price of a tune-up is the same customer you will otherwise buy twice. Our lead reactivation service exists because most shops have that list and never get to it before the season turns.