Finding a tech who can run a call clean, sell a PM contract without being pushy, and still have a callback rate under 5% is harder than finding a refrigerant leak with no gauges. This article covers how to hire HVAC technicians who actually stick — from writing the job post to the first 90 days on your dispatch board.
Stop Posting Like Everyone Else
Most HVAC job posts read like they were written by an HR department that's never touched a manifold. "Competitive pay, great culture, growth opportunities." That's every post on Indeed from here to Phoenix. Your post needs to do two things: filter out the wrong people fast, and make the right person stop scrolling.
Write it like you're talking to a tech, not a recruiter. Mention the specific equipment you service — if you're heavy on Carrier and Lennox residential, say that. If you run a flat-rate book, say that too. If you're a two-truck operation trying to get to four, say it. Techs who've been burned by chaotic small shops want to know what they're walking into. Transparency is a filter.
Include the pay structure explicitly. "Up to $35/hr DOE" means nothing. "$28–$36/hr flat rate, with spiff structure on accessories and IAQ" tells someone exactly where they land. If you offer a take-home truck, say it. If you don't yet, don't fake it. The wrong hire costs you more than the right hire's truck allowance.
Post on Indeed and ZipRecruiter, yes — but also post in RSES chapter Facebook groups, local trade school job boards, and your state's ACCA chapter job board. The techs worth hiring are often not actively looking; they're mildly unhappy somewhere else.
What to Actually Look for in a Candidate
Certifications matter, but they're the floor, not the ceiling. EPA 608 is table stakes. A journeyman card or state license matters depending on your state's requirements. What separates a $28/hr tech from a $36/hr tech on your board isn't the paper — it's the soft skills that drive your average ticket and your callback rate.
Ask yourself three things during the interview:
- Can this person explain a repair to a homeowner without condescension or confusion?
- Do they take ownership when a call goes sideways, or do they blame the equipment?
- Do they ask about your callback process, or do they never mention it?
The third one is the tell. A tech who's never thought about callbacks hasn't been held accountable at their last shop. That's not always a dealbreaker — sometimes you can train accountability in — but you need to know what you're inheriting.
Experience in residential service specifically matters more than total years in the trade. A tech with eight years in commercial light industrial may struggle with the pace and customer interaction of a residential route. Five calls a day, every homeowner wants a full explanation, no building engineer to hand off to. That's a different job.
How to Structure Compensation Without Killing Your Margins
Here's a rough framework that works for a residential shop running $185–$220/hr labor rate:
| Experience Level | Hourly (Flat Rate Equivalent) | Expected Daily Revenue | Gross Margin Target |
|---|---|---|---|
| Helper / Apprentice | $16–$20/hr | $400–$600 | 55–60% |
| Junior Tech (2–4 yrs) | $22–$28/hr | $900–$1,400 | 58–62% |
| Senior Tech (5+ yrs) | $30–$38/hr | $1,500–$2,200 | 60–65% |
| Lead / Install Tech | $34–$42/hr | $2,000–$3,500 | 55–62% |
If you charge $185/hr and your tech runs 5 calls a day at 1.2 hours average billed time, that's $1,110 in labor revenue before parts. A senior tech at $34/hr costs you roughly $272/day in base labor. That's a 75% gross margin on labor alone — but that's before truck cost, callbacks, warranty work, and the calls that go long for free. Real margin lands closer to 60–65% when you account for soft costs.
Spiffs work, but cap them or they warp behavior. I've seen techs push $800 IAQ packages on 78-year-old customers who call back furious. Set a monthly spiff cap and tie it to customer satisfaction, not just ticket size.
The Ride-Along Isn't Optional
Before you put a new hire on their own truck, you need at least three to five ride-alongs — and you or your lead tech needs to be honest about what you see. This isn't about testing whether they can swap a capacitor. It's about watching how they talk to customers, how they document the call, how they handle a situation where the repair cost surprises the homeowner.
I had a tech once who could diagnose faster than anyone I'd hired. Clean installs, good hands. But he'd hand the customer a $1,400 repair quote with zero explanation and then act confused when they said no. His close rate on repairs over $500 was under 30%. The shop average was 58%. That gap costs real money — if he's running 4 calls a day and missing 2 repairs a week at an average of $600 each, that's $62,400 a year in revenue walking out the door.
Ride-alongs let you catch that before it's your problem for a full quarter.
What to Evaluate During Ride-Alongs
Watch how they handle the truck stock. A tech who can't tell you what's on their truck at 7am is going to be calling the supply house twice a day. Watch how they write up the invoice. Watch whether they mention the PM contract or skip it entirely. These are trainable skills, but you need baseline data before you hand over a route.
Background Checks, Drug Screens, and the Legal Stuff
Run them. Every time. No exceptions for "he seems like a good guy" or "she came highly recommended by my buddy." You're sending someone into a customer's home, often alone. Your liability is real.
In most states you can run a background check with written consent. Use a third-party screening service — Checkr and HireRight are two options that integrate with common applicant tracking systems, though verify current pricing and features on their sites. Drug screens are standard in residential service; most customers assume you're doing them. If you're not, you're one incident away from a conversation you don't want to have.
Check MVR (motor vehicle record) if they're driving your truck. A tech with three moving violations in two years is an insurance problem waiting to happen. Your commercial auto carrier will ask, and if you didn't check, the claim gets complicated.
The First 90 Days Decide Everything
Most techs who wash out do it in the first 90 days — and most of the time, it's the shop's fault, not theirs. No structured onboarding, no clear expectations on callback rate or close rate, no feedback until something goes wrong. Then you're surprised when they're gone by Labor Day.
Set 30-day, 60-day, and 90-day check-ins on the calendar before their first day. At 30 days, you're talking about truck stock habits, call documentation, and customer feedback. At 60 days, you're looking at close rate and callback rate. At 90 days, you're deciding whether this person has a long-term role on your board.
Put the targets in writing. Not as a threat — as a roadmap. A tech who knows you expect a callback rate under 6% and a PM conversion rate above 20% can actually work toward those numbers. A tech who finds out they're failing a standard they didn't know existed will just leave.
Common Mistakes That Cost You Real Money
I've made most of these myself, which is the only reason I'm qualified to list them.
Hiring out of desperation. Peak season hits, you're stacked on the dispatch board, and you hire the first warm body with an EPA card. That tech runs bad calls all summer, your callback rate doubles, and you spend October cleaning up the damage. A bad hire in June can cost you $15,000–$30,000 in callbacks, comebacks, and lost customers by September.
Skipping the working interview. A phone screen and one sit-down interview tells you almost nothing about how someone runs a call. At minimum, do a paid half-day ride-along before extending an offer.
Paying flat rate before you have a flat-rate book. If you're pricing from memory or a loose spreadsheet, flat rate punishes you. The tech bills 3 hours on a job that should be 1.5, and you eat the difference in customer goodwill. Get your book built first.
Not checking references. Real references, not the ones they list. Call the last shop they worked at directly. Ask specifically about callback rate and whether they'd rehire. Most former employers will tell you something useful if you ask a direct question.
Ignoring culture fit because their skills are strong. A tech who undercuts your other techs, complains about pricing to customers, or refuses to document calls properly will poison a small shop fast. Two trucks means one bad attitude is 50% of your field team.
No defined onboarding process. Handing someone a truck and a tablet on day one and saying "figure it out" is how you lose a potentially good tech in 45 days.
How Quadrum Handles This
Hiring is only half the battle — once a new tech is running calls, your back-office load goes up. Quadrum's AI back-office crew can draft follow-up emails to customers after a new tech's first visit, giving you a touchpoint to catch any issues before they become callbacks or bad reviews. It also drafts review request messages in your shop's voice, which matters more when a new tech is still building their customer rapport. You review and approve before anything goes out — it's not autopilot, it's backup.
Related Reading
Hiring the right tech is only the start — keeping your back office tight while you're training them is what separates a growing shop from a spinning one. Quadrum's AI back-office crew handles the follow-ups and review requests so you can stay on the dispatch board. Try Quadrum free for 7 days.