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Hiring for HVAC: tech job ads and phone screens drafted

ChatGPT, Claude or Gemini drafts your HVAC tech job ad, phone-screen questions and interview notes; you make every call. Free to about $20£15€18A$29C$28 a month.

At a glance

  • What it costsFree–$20Free–£15Free–€18Free–A$29Free–C$28 a month

  • Worth, in extra profit or time saved in the worked example$180£135€161A$260C$254 a month

  • Pays for itselfIn a few days

  • Sign up and configure; no technical skills neededEasy to set up

Figures come from the worked example below, using its stated assumptions. Tool prices checked . How we check prices

The problem

Hiring a service tech before summer means writing a job ad, sorting dozens of applicants and running phone screens, usually at night after a full day. If each hire takes the owner 10 hours of writing and screening, and the company hires a tech about every two months, that's 5 hours a month of the owner's time.

What the AI does

Paste your pay range, schedule, on-call rotation, benefits and must-haves (EPA Section 608 certification, a driver's license, the state license level the job needs) into ChatGPT, Claude or Gemini and ask for a clear job ad. Then ask for 8 phone-screen questions tied to the job, and a simple sheet to score each answer the same way. After each call, paste your notes and ask for a short summary. The owner reads every applicant and makes every decision.

A worked example

An illustrative example built from typical figures, not a named business.

A four-truck HVAC company in Las Vegas hires about 6 techs a year, mostly before summer. The owner uses an assistant to draft the ad and phone-screen questions, and writes up each call from voice notes.

Before

About 10 hours of writing and screening per hire, 6 hires a year

After

About 4 hours per hire: the ad in 30 minutes, the same questions for every candidate and quick write-ups

What it's worth

About $180£135€161A$260C$254 a month of the owner's time saved, against free to about $20£15€18A$29C$28 a month for an assistant. That's 6 hours saved per hire at one hire every two months, 3 hours a month, at an assumed $60£45€54A$87C$85 an hour.

How to set it up

  1. Choose one assistant: ChatGPT, Claude and Gemini all have free plans, and paid plans for one person cost about $20£15€18A$29C$28 a month.
  2. Give it the facts: pay range, hours, on-call, truck and tools policy, benefits and the certifications the job needs. Ask for a plain job ad without slogans.
  3. Check the ad yourself for anything about age, family, health or national origin, and include your pay range where your state or city requires it.
  4. Ask for phone-screen questions about real work (a no-cool diagnosis, a customer who won't approve a repair) and a sheet to score each answer.
  5. After each call, paste your own notes for a summary, and keep the original notes with the application.

What goes wrong

  • Don't let the assistant rank, reject or pick candidates. Federal equal employment rules apply to every hiring decision, and some places, New York City among them, regulate automated hiring tools.
  • Applicants' résumés hold personal details. Paste only what you need and turn off model training where your plan allows.
  • A polished ad won't fix pay below the local market. If nobody applies, check the pay first.

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Last updated October 18, 2026.