HVAC Text Message Marketing: The Four Texts and What Fires Each One

Perry Lam · FounderPublished

HVAC text message marketing is the set of messages a shop sends around a job: the appointment confirmation, the on-the-way text, the review request afterwards, and the seasonal reminder. Three of the four are outputs of the dispatch record rather than a marketing list, and that difference decides both what they may say and whether they are true.

The four texts, and the record that fires each one

Each of the four texts is fired by a different record changing state, not by a send button. The confirmation fires when a job lands on the schedule, the on-the-way text when a technician is dispatched, the review request when the job closes, and the seasonal reminder off a service date in the customer history.

That question comes before the copy. A shop that loads its customer list into a texting tool can send all four, and three will be guesses: a confirmation for a job that moved, an on-the-way text from a truck that has not left, a review request for work that is not finished.

The four texts, their triggers and what each one needs, as of September 2026
The textWhat fires itWhat must be true in the recordWhat it needs from the customer
Appointment confirmationA job written to the scheduleThe window matches what the CSR promisedA number captured at booking, and a reschedule path
On the wayA technician's status changing to dispatchedSomebody changes the status in the fieldNothing beyond the booking; it is their job
Review requestThe job closing out, invoiced and paidThe close is entered the day the work endsThe same ask every customer gets, at the same point
Seasonal reminderA last-service date and the season aheadThe service date and equipment type are filled inWritten marketing consent, captured separately

Only one of the four is a marketing text

The first three texts are about a job the customer arranged. The fourth sells one. Federal rules treat that split as the deciding line, and the Federal Communications Commission puts it in one sentence in its consumer guide on unwanted robocalls and texts: "Commercial texts require written consent; for informational texts, your consent may be oral."

The regulation behind it is 47 CFR 64.1200, the FCC's rule implementing the Telephone Consumer Protection Act. It defines prior express written consent as an agreement in writing, bearing the signature of the person called, authorizing advertisements or telemarketing messages by autodialer to a named number. A phone number typed into a booking form is not that agreement.

The practical consequence is a second checkbox, not a second system. Capture the service number at booking, and capture marketing consent on its own line with the date and the form it came from, so the seasonal text has a record behind it the other three never need. This is marketing guidance rather than legal advice, and a texting program is worth ten minutes of your attorney's time.

The on-the-way text is a dispatch output, and it can be wrong

An on-the-way text makes a promise about drive time, and it is the one message a shop can send perfectly and still damage the job. It is true only if the dispatch board changed when the truck moved. Sent from a schedule rather than from the field, it tells a homeowner somebody is coming while the truck is still on the previous call.

August in Charlotte is when this breaks. Calls run long, the board slips two hours, and the automation keeps firing off the planned window because nothing upstream told it otherwise. The homeowner who got a nine o'clock text and a noon technician remembers the text.

So the fix is upstream of the message. Either the status change is a habit the technicians keep, or the text says less: an arrival window rather than a minute, and a reply path that reaches a human. A message that hedges honestly beats one that is precise and wrong.

The review request is one text, sent the same way to everyone

The review text goes to every customer at the same milestone, with the same wording, and with nothing attached to it. The FTC's rule on consumer reviews and testimonials, 16 CFR Part 465, makes it a violation to provide compensation or other incentives in exchange for, or conditioned on, reviews expressing a particular sentiment.

That rules out two habits common in the trades: the gift card for a five-star review, and the two-step text that asks how the visit went and sends the review link only to customers who answer warmly. The rule's carve-out points the other way, exempting reviews that came from generalized solicitations to purchasers to post about their experiences.

The seasonal text is written for a heat pump, and there are two of them

Seasonal reminders in Charlotte come in pairs because one box carries both seasons. The 2020 Residential Energy Consumption Survey counted 1.54 million North Carolina homes with a central heat pump as main heating equipment, 38% of the state's 4.01 million, so the same customer is due a spring visit and a fall one.

That sets the vocabulary as well as the dates. The autumn text is about aux heat running for the first time since March and a defrost cycle the homeowner has not heard in months, not about a furnace. A national template arrives in October describing heating equipment a large share of the list does not own.

A reply of stop starts a clock, and the clock is ten business days

A customer can revoke consent by any reasonable method, and 47 CFR 64.1200 names the words that count on their own: stop, quit, end, revoke, opt out, cancel and unsubscribe, sent in reply to an incoming text. Every revocation made in a reasonable manner must be honored within a reasonable time not to exceed ten business days.

Two things follow for a shop running four texts from three tools. A stop sent to the marketing platform has to reach the one sending confirmations, because the customer did not reply to seven systems. And the opt-out needs a timestamped record, since the obligation is measured in days from receipt.

What happens to a call nobody answers at 9pm in July?

It gets a text back within seconds, carrying a link to real available slots, then a follow-up sequence until the customer answers either way. That is the fifth text, and it is missing from most lists of four because it is not fired by a job: it is fired by a call that did not become one.

It matters because the leak is measurable. ServiceTitan published platform data covering more than 3,000 US and Canadian trade businesses in June 2022: HVAC companies booked 38% of qualified inbound calls, and shops with fewer than five technicians booked 24%. A texting program built only around jobs that already exist never touches that number.

Built out, the set is one system rather than four tools: triggers reading the dispatch and job records, a booking link pointing at live availability instead of a contact form, consent stored per channel with its date, and the booked appointment writing back so the report can name which text produced it. Mirastart builds those as software and runs the marketing on top. The same mechanics are visible before you call: the Carolina Sky Painting website, the online booking and repair-status software Quick Auto NC runs its bays on, the live-availability booking behind this site's discovery-call page, and the Sushi Hana Club app.

Sources

  1. Federal Communications Commission, Stop Unwanted Robocalls and Texts - The FCC's consumer guide: "Commercial texts require written consent; for informational texts, your consent may be oral." Page last updated February 27, 2026.
  2. 47 CFR 64.1200, Delivery restrictions (FCC rules implementing the TCPA) - Cornell LII mirror of the eCFR (official text at ecfr.gov/current/title-47/section-64.1200). Defines prior express written consent, and names stop, quit, end, revoke, opt out, cancel and unsubscribe as per se reasonable revocations to be honored within ten business days.
  3. 16 CFR Part 465, Rule on the Use of Consumer Reviews and Testimonials (Federal Trade Commission) - Cornell LII mirror of the eCFR. Section 465.4 bars compensation or incentives conditioned on reviews expressing a particular sentiment; section 465.2(d) exempts reviews resulting from generalized solicitations to purchasers.
  4. U.S. Energy Information Administration, Highlights for space heating in U.S. homes by state, 2020 (RECS) - North Carolina: 4.01 million homes, 1.54 million (38%) with a central heat pump as main heating equipment. 2020 survey year; final data released March 2023.
  5. ServiceTitan, Data: call booking rates across 3,000+ trade businesses (June 2022) - ServiceTitan platform data, published October 2022: a 42% average call booking rate across trades, 38% for HVAC, and 24% for shops with fewer than five technicians. Denominator is qualified lead calls.
Questions

HVAC text message marketing, answered.

Do we need written consent to text a customer about the appointment they booked?

Not for the appointment itself. The FCC's consumer guide on unwanted robocalls and texts states that commercial texts require written consent while consent for informational texts may be oral, and a confirmation, an on-the-way notice or a reschedule is about the job the customer arranged rather than an advertisement for a new one. The seasonal promotion is the one that needs the written line, so capture it separately at booking with the date and the form it came from. This is marketing guidance rather than legal advice.

Can we send the review text only to customers who tell us the visit went well?

No. 16 CFR Part 465 makes it a violation to provide compensation or other incentives in exchange for, or conditioned on, reviews expressing a particular sentiment, and sentiment-gating a review request is the same idea without the gift card. The rule exempts generalized solicitations to purchasers to post about their experiences, which is what a uniform ask at a fixed milestone is. Send the same text to everyone and answer the unhappy ones in public.

How many texts is too many for one HVAC customer?

Count triggers rather than messages. A homeowner on a heat pump has two seasonal visits a year plus whatever the jobs themselves produce, and every one of those texts is tied to something that actually happened on their equipment. The volume problem shows up when a shop starts sending texts with no trigger behind them, and the signal to watch is stop replies rather than a target frequency: a rise there usually means the message went to people it did not apply to.

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