Is missed-call text-back legal for HVAC shops
One named text on the number they just dialed is a different job from a marketing drip. FCC language, the STOP list, and the HVAC protocol — not a slogan that “it’s fine.”
The short answer: This is not legal advice. The federal rule that vendors wave around is 47 CFR 64.1200. Autodialed texts that advertise or count as telemarketing need prior express written consent. A caller who just rang your published shop number is not a purchased list. That still does not give you a license to send a promo, a five-text sequence, or another ping after they say stop. The FCC’s own revocation list is “stop,” “quit,” “end,” “revoke,” “opt out,” “cancel,” or “unsubscribe,” plus any other reply a reasonable person would read as “don’t text me.” Honor it. One confirmation text that only confirms, with no marketing, is the extra message the rule describes. Write the HVAC first text as identity + the miss + heat or cooling + address. Then a human. Then stop.
What page one is selling you
Search “is missed call text back legal” as an HVAC owner and you get vendor blogs. They are talking to shops, not to homeowners looking for a truck. That is why this page exists. They are not a court, and they are not the Code of Federal Regulations.
The usual pitch: the customer called you first, so one reply is “transactional,” so you are clear. The useful part of that sentence is the first clause. They dialed the number on your Google profile. The dangerous part is the leap to “so we can automate a campaign.”
The 8-minute no-heat piece is what the caller does after the miss. The playbook is the wiring. This page is the consent and stop rules that sit on that first text so you do not turn a recovered no-heat into a complaint.
What 47 CFR 64.1200 actually says
Read the rule, not a landing page. eCFR title 47, section 64.1200, displayed current as of October 1, 2026.
Telemarketing autodialed texts. 64.1200(a)(2) bars initiating a telephone call that includes or introduces an advertisement or constitutes telemarketing, using an automatic telephone dialing system or an artificial or prerecorded voice, to the wireless numbers in (a)(1), other than a call made with the prior express written consent of the called party (nonprofit and HIPAA-health-care exceptions sit in the same paragraph). The FCC’s definition of prior express written consent is a signed writing that names the seller, the number, and that you are authorizing autodialed or prerecorded *advertisements or telemarketing*.
If your missed-call text says “20% off a tune-up” or drops them into a seasonal promo, you left the “they called us” story and walked into (a)(2).
Revocation. 64.1200(a)(10) says a called party may revoke prior express consent, including prior express written consent, by any reasonable method that clearly says they do not want more calls or texts. These are reasonable *per se*: an automated opt-out on a call; a reply of “stop,” “quit,” “end,” “revoke,” “opt out,” “cancel,” or “unsubscribe”; or the website or number you designated for opt-out. Other wording still counts if a reasonable person would read it as a stop. Honor every reasonable request within a time that does not exceed ten business days.
Ten business days is the outer bound in that sentence. For an HVAC shop, “we’ll get to STOP next week” is how you look reckless. Honor it before the next automated send. Immediately is the operational rule even when the CFR’s outer bound is longer.
One confirmation. 64.1200(a)(12) allows a one-time text that *merely confirms* the revocation, with no marketing, and that is the only extra message after the request. Sent within five minutes, it is presumed inside the prior consent. Longer, and you have to show the delay was reasonable. If they had consented to several categories, the confirmation may ask which ones they meant — and you stop everything that needs consent until they clarify.
That is the whole extra message. Not a “sorry to see you go, here is 10%.” Not a second “just checking.”
Quiet hours and lists. This page does not reprint the entire subpart. Do not text a purchased list. Do not treat Caller ID capture from a missed *marketing* call as a signed writing. Do not hide the shop name. Get counsel on your 10DLC brand, your exact message, and your state. A2P registration is a carrier path. It is not a TCPA hall pass.
A Utah return-call case is not an SMS exemption
In June 2025, *Butera v. Sugarhouse Real Estate Group* (D. Utah) dismissed a Do-Not-Call private claim where the plaintiff called a Keller Williams number back after one solicitation, hung up, and then treated the KW return call as a second unsolicited solicitation. The court said the return call was a response to the plaintiff’s own call, not a second solicitation under 47 U.S.C. § 227(c)(5), which needs two unsolicited calls in twelve months.
TCPAWorld’s write-up of that order is useful because it also says the thing vendors skip: neither the TCPA nor the implementing regs actually print an exception labeled “returning a missed call.” The commentator liked the result and still could not fit a sterile missed call neatly into “prior express invitation” or an established business relationship built on a transaction or inquiry.
Weight that correctly:
- It is one district court, Utah, June 30, 2025.
- It is a *return voice call*, not an automated SMS.
- It is the DNC two-call private right, not 64.1200(a)(2) telemarketing robotexts.
- The court was stopping a manufactured second-call theory, not blessing a drip.
Do not paste *Butera* under an HVAC text-back as “a court said missed-call SMS is legal.” Use it as: one judge refused to count a return *call* as a second solicitation when the consumer had just dialed that business. Your text still has to be a reply to *their* inbound, on *your* published number, with no promo, and a working STOP.
See how you score on this.
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Scan my businessThe HVAC protocol
This is the operations sheet. Counsel still owns the legal opinion.
1. Only the number that just rang you
The trigger is an unanswered inbound to the line on the truck, the Google profile, and the website. Not a lead list. Not a “similar homeowners in this zip.” Not a form fill you bought. A website form is a different clock and a different consent story — do not paste this protocol onto Submit.
2. One text, named, about the call they placed
“Hi, this is [Name] at [Shop] — sorry we missed you. Are you without heat right now? What’s the address? Reply STOP to opt out.”
Summer: swap heat for cooling. If they already said gas or CO in a voicemail, do not stay on SMS. That path is 911 / the gas utility, then you. The 8-minute page owns that exception.
Four jobs: who you are, you saw the miss, urgency, location, and a stop. A coupon is a fifth job. Cut it.
3. If they reply with a job, a human takes it
The first-text scorecard still applies: shop name, they called you, one question that sorts the job, then a person. Allsopp’s booking-rate point lives on its own page. Do not rebuild it here. Under a minute on the reply is the shop rule we already teach. A bot that keeps pitching after “the heat is out” is how you get a one-star, not a TCPA white paper.
4. If they do not reply — one follow-up, then stop
Wait 10–15 minutes. One more line that still names you and still offers a callback. Then stop. A third automated ping is how you get reported.
5. STOP means stop, including near-STOP
Honor stop, quit, end, revoke, opt out, cancel, unsubscribe, and “leave me alone” / “wrong number.” Remove the number from the missed-call send *and* from any other automated HVAC text you run on that 10DLC. One confirmation, no promo, within minutes.
6. Log the miss
Time of ring, time of text, whether they replied, whether they STOPped, whether a human took over, outcome. You cannot prove “this was a reply to their call” from memory.
7. Do not graduate them into marketing
A recovered no-heat is not prior express *written* consent for a fall tune-up blast. If you want marketing SMS later, that is a separate signed writing under (a)(2) and (f)(9). Until then, the thread is the job they called about.
Common misconception
They called you. That is the fact that makes a single, named, non-promo reply look like a response instead of a cold blast. It is not a federal exemption titled “HVAC shops may autodial a sequence.” 64.1200 still splits advertisement/telemarketing (written consent) from other traffic, still lists the STOP words, still caps confirmation at one non-marketing text, still gives ten business days as the outer honor window. A Utah DNC case about a return *call* does not rewrite that. The shops that stay out of trouble keep the first text boring: who we are, we missed you, heat or cooling, address, STOP. The shops that get letters add a coupon and a day-3 bump.
The bottom line
For an HVAC owner, missed-call text-back is legal *as an operations design* only if it stays a reply: one named text on the inbound they just placed, no advertisement, a working STOP, a human on the answer, a log. That is the same design that wins the no-heat window. Counsel still has to look at your brand, your exact copy, and your state. This page is the sheet you hand them, not a substitute for them.
Your Blueprint scans your real Google presence in 60 seconds and shows the exact fixes worth the most — no card, no call.
For an HVAC owner, missed-call text-back is legal *as an operations design* only if it stays a reply: one named text on the inbound they just placed, no advertisement, a working STOP, a human on the answer, a log. That is the same design that wins the no-heat window. Counsel still has to look at your brand, your exact copy, and your state. This page is the sheet you hand them, not a substitute for them.
Common questions
It can be a lawful *reply* when they called your published number, the text is about that call, it is not a promo, and STOP works. It is not automatically lawful because a vendor said “transactional.” Read 64.1200(a)(2) and (a)(10). Ask counsel for your setup. This is not legal advice.
If the alternative is voicemail they will not listen to, yes — one named text. Silence is how the next map-pack name gets the job. A five-message drip is a different product.
A text sent because an inbound to your shop number went unanswered. Not a broadcast. Not a form follow-up. Not a quote-desk sequence. Those are other pages.
Honor STOP. Keep the log that this number called you. Do not keep sending. 64.1200(a)(10) is the revocation list. A DNC private claim on *texts* is its own fight in the courts; do not DIY that. Stop the send and call counsel.
A first text that asks whether they have heat is not a signed install contract. Do not treat SMS as a substitute for the estimate you actually want signed. That Keyword Tool row is a different job.