In peak season your phones ring while techs are on rooftops and your office is on another line. Most callers with no AC will not leave a voicemail. They call the next company on Google. Missed-call text back is one of the cheapest ways to keep those jobs, and it takes an afternoon to set up properly.
Why Speed Matters So Much
A Harvard Business Review study found that firms that contacted online leads within an hour were nearly seven times more likely to qualify them than firms that waited longer (HBR, 2011). For a homeowner sitting in a hot house, the window is much shorter than an hour. A text in five seconds tells them a real company heard them.
How It Works
- A homeowner calls and nobody answers.
- Within seconds, they get a text from your business number.
- They reply with the problem, or tap a link to book.
- Your team gets an alert and calls back, already knowing the issue.
A Real-World Style Example
- 2:14 pm, missed call.
- 2:14 pm, text sent: “Hi, it’s Comfort Pro HVAC. Sorry we missed you, we’re helping another customer. What’s going on with your system? Reply here and we’ll call you right back.”
- 2:16 pm, customer replies: “AC running but blowing warm air. Upstairs is 84.”
- 2:21 pm, dispatcher calls back and books a same-day visit.
Without the text, that caller had already dialed someone else by 2:15.
What You Need to Set It Up
| Piece | Notes |
|---|---|
| Phone system or app that supports text back | Many VoIP systems, CRMs and field service tools have it built in |
| A business number that can send texts | Your main number or a tracked number, text-enabled |
| 10DLC registration (US) | Carriers require businesses texting from standard local numbers to register their brand and use case |
| Templates | Separate messages for business hours and after hours |
| Alerts | Push or SMS alerts to dispatch or the on-call tech |
| CRM logging | So every missed call becomes a tracked lead |
About 10DLC registration
In the US, mobile carriers require businesses that text from standard 10-digit numbers to register through the A2P 10DLC system, and unregistered traffic can be filtered or blocked (Telnyx). Your phone provider usually handles the forms. Describe the use case honestly, for example “replying to customers who called us”.
Message Templates
During business hours
“Hi, it’s [Company]. Sorry we missed your call, we’re with a customer. What’s going on with your heating or cooling? Reply here and we’ll call you right back.”
After hours
“Thanks for calling [Company]. We’re closed right now. If this is an emergency (no heat, no cooling with vulnerable people at home, or a burning smell), reply URGENT and our on-call tech will call you. Otherwise we’ll call first thing in the morning.”
With a booking link
“Prefer to book online? Pick a time here: [link]. Or reply with your issue and we’ll call you.”
Follow-up if no reply after 30 minutes
“Hi, just following up from [Company]. Still need help with your system? Reply YES and we’ll call.”
Keep messages short, friendly and clearly from your company. Do not send more than one follow-up.
Rules to Follow
- Reply, do not market. Replying to someone who just called you is service. Sending promotions later needs their permission.
- Honor opt-outs. If someone replies STOP, stop.
- Follow up fast. The text buys minutes, not hours.
- Do not over-promise. Never say “a tech is on the way” until it is true.
Who Answers the Replies?
| Team size | Simple setup |
|---|---|
| Owner-operator | Replies go to the owner’s phone, with the after-hours template on |
| Small team | Replies go to the office during the day and the on-call tech after hours |
| Larger team | Replies land in a shared inbox in the CRM, assigned by dispatch |
How to Measure It
| Metric | What it tells you |
|---|---|
| Missed calls per week | How big the leak is |
| Texts sent | Should match missed calls |
| Reply rate | Whether your template works |
| Booked jobs from replies | The money saved |
| Average call-back time | Whether your team follows up fast enough |
Review it weekly in peak season. Many owners are surprised by how many jobs were walking away before.
Pair It With the Rest of Your System
Text back saves the calls your marketing brings in. Make sure those calls keep coming with a strong Google Business Profile and steady reviews. If you run Local Services Ads, Google says call handling affects your ranking, so this matters even more. Our HVAC marketing service can set up missed-call text back for you, and the calculator on that page estimates what missed calls cost you.
Sources
- Oldroyd, McElheran and Elkington, The Short Life of Online Sales Leads, Harvard Business Review (2011)
- Telnyx: What is 10DLC?
- Google: About Local Services Ads rankings
Want this done for you?
Start with our $1 full audit: your Google Maps ranking, reviews, website and missed calls, plus a 30-minute video walkthrough.
Frequently Asked Questions
What is missed-call text back?
An automatic text sent to anyone whose call you miss, within seconds, so they can reply or book instead of calling a competitor.
Does missed-call text back work after hours?
Yes. Use a separate after-hours message with a clear option for emergencies that routes to your on-call tech.
Is it legal to text customers who call me?
Replying to someone who just called you is generally treated as service, not marketing. Register your number for business texting, honor STOP requests and do not send promotions without permission. Check with your provider or a lawyer for your situation.
Do I need 10DLC registration?
In the US, if you text from a standard local business number, carriers require registration. Your phone or texting provider usually handles it.
Will it replace my receptionist?
No. It catches the calls your team cannot answer, so fewer jobs are lost.
More HVAC Marketing Guides
Or see how it all fits together on our hvac marketing service page.
