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Missed-call and estimate follow-up, drafted by AI and released on your rules

Most HVAC quotes die from silence, not price. AI can draft the follow-up and track the consent clock, while your approved templates and staff decide what actually goes out.

Written by Ali Sedighi, MBALast updated:

AI follow-up for HVAC means two things: a quick, polite response to every missed call, and a steady, respectful sequence on every open estimate until the customer decides. The AI drafts and schedules; your rules and your people control what is sent. The goal is that no $12,000 furnace-and-AC quote dies because the comfort advisor was busy.

What it is

There are two separate workflows, and they need different handling.

Missed calls. When a call goes unanswered, the system sends a short message within minutes, identifying your company and asking how you can help. Because the caller contacted you first, this is usually a reply rather than marketing, but the message must still identify you and should not drift into promotion.

Open estimates. After a quote is sent, follow-ups go out at set intervals: a check-in after two days, a "questions about the quote?" message after a week, and a final note before the quote expires. Each one stops the moment the customer replies, books or opts out.

AI's job in both is narrow: fill approved templates with the right details, flag replies that need a human, and draft suggested answers for staff to check.

Who it is for

This suits HVAC companies that send more quotes than they can personally chase, or that lose calls while technicians and owners are on jobs. Replacement-heavy companies benefit most, because each recovered quote is large.

If you already follow up every quote by phone within 48 hours, the gain is smaller. AI should support a good habit, not replace one that works.

What's included

  1. Quote audit. We pull 90 days of estimates and check how many got any follow-up, and when.
  2. Consent mapping. For each lead source we note the type of consent and its start date, based on ISED's CASL consent guidance: implied consent from an inquiry generally lasts six months, unsubscribes must be honoured within 10 business days, and each message needs your business name, contact details and a working unsubscribe.
  3. Template library. Missed-call replies, quote check-ins and a final expiry reminder, written in plain language with placeholders such as [First name], [Equipment] and [Advisor name].
  4. Stop rules. Reply received, job booked, unsubscribe, consent expired, or quote marked lost.
  5. Human review queue. Every customer reply and every AI-suggested answer lands with a named staff member.
  6. Pilot and report. Thirty days live, compared with your previous 90-day close rate.

Timeline

Plan on one to two weeks to audit quotes, map consent and write templates, then a 30-day pilot. Connecting to your CRM or field-service software is often the slowest step; if it lacks a clean quote status field, we fix that first with you or with a CRM specialist such as HVACCRM.ca.

How results are measured

The key number is close rate on quotes, measured the same way before and after. A simple example: if you send 80 replacement quotes a quarter and close 30%, that's 24 jobs. If consistent follow-up lifts that to 35%, you gain four jobs a quarter. At an average replacement value of $10,000, that is $40,000 in revenue, which you then compare with tool and staff costs. We also track unsubscribe rate and complaints, because a sequence that annoys people is a reputation cost.

Mistakes to avoid

  • Following up forever. Implied consent expires. Put the date on the record.
  • Hiding the sender. Every message names your company and gives a way to reach you.
  • Letting AI answer price questions. Price, financing and rebate questions always go to a person.
  • Sending the same text to a commercial client and a homeowner. Separate the sequences.
  • Ignoring Quebec. French-language customers need French messages; see our Quebec page.

For texting tactics in more depth, HVAC.chat focuses on SMS and chat follow-up. Our consent and privacy guide covers the rules behind this page, the AI privacy and review rules service turns them into settings, and pricing explains how a follow-up project is scoped. We handle the office workflow; we are not a contractor.

Frequently asked questions

Is the AI writing new messages to each customer?

Mostly no. The safest setup uses templates you approve, with the AI filling in details such as the customer's first name, the equipment quoted and the comfort advisor's name. Free-written messages go to a staff member for approval first.

How long can we follow up on a quote?

Under CASL, an inquiry or application generally gives implied consent for six months, and a purchase for up to two years, according to ISED's consent guidance. After that you need express consent. We set the clock in your system so follow-ups stop on time.

What if the customer replies with a question?

The sequence stops and the reply goes to a person. The AI may suggest a draft answer, but a staff member checks it before sending, especially for price, financing or program questions.

Does this overlap with a CRM?

It sits on top of one. The follow-up logic needs a record of each quote, its status and the consent date, which usually lives in your CRM or field-service software.

Sources

  1. ISED: Getting consent to send email (CASL) (2026-10-23)