10 Questions to Ask Before You Schedule HVAC Service

When your furnace quits in January or your AC gives up in a July heat wave, the temptation is to call the first company that answers the phone and get somebody — anybody — out to the house. I get it. But the ten minutes you spend asking a few pointed questions before you book is the cheapest insurance you'll ever buy. It's the difference between a fair repair and a $400 capacitor, between a fixed furnace and a surprise "your whole system needs replacing" pitch.

I've run Mazure's Heating & Air Conditioning out of Jenison since 1987, and I've heard every story West Michigan homeowners bring us after a bad experience somewhere else. The pattern is almost always the same: nobody asked questions up front, so nobody knew what they'd agreed to. So here are the ten questions I'd ask any HVAC company — including mine — before scheduling service. For each one, I'll tell you why it matters and what a good answer sounds like. This pairs with our longer guide on how to hire an HVAC contractor in Grand Rapids if you're vetting companies for a big installation.

1. Are you licensed and insured in Michigan?

Michigan requires a mechanical contractor license for furnace, boiler, and air conditioning work, issued through LARA (the state's licensing department). You can verify any license online in about a minute. Insurance matters just as much — if an uninsured tech gets hurt in your basement or torches a wire, that can land on your homeowner's policy.

A good answer: the license number offered without hesitation, plus proof of liability insurance on request. Anyone who bristles at this question has told you everything you need to know.

2. Who actually shows up — an employee or a subcontractor?

Some companies sell the job and then farm the work out to whoever's available. That's not automatically bad, but it means the person in your home may not be trained, vetted, or accountable to the company whose name is on the truck.

A good answer: a straight one. "Our own employees, background-checked and trained by us" is what you want to hear. At Mazure's, the person who shows up works for Mazure's — and often it's me. That's a big part of why we've kept the same customers for decades.

3. What's the diagnostic fee, and does it apply toward the repair?

Almost everyone charges something to come out and diagnose the problem — that's fair, because the diagnosis is real work. What varies wildly is whether that fee disappears into the bill or gets credited toward the repair if you approve it.

A good answer: a specific dollar amount quoted on the phone, before booking, along with the policy on applying it to the work. "We'll discuss pricing when we get there" is a red flag, not an answer.

4. Do you charge flat-rate or hourly?

Flat-rate pricing means one quoted price for the repair, however long it takes. Hourly means the meter runs. Both can be honest; both can be abused. Flat-rate books at some big outfits carry serious markup, and hourly billing rewards slow work.

A good answer: whichever model they use, the total price is approved by you in writing before work begins. If they can't tell you what a common repair like a capacitor or ignitor typically costs, keep dialing.

5. Do you work on my brand and type of equipment?

Some companies only touch the brands they sell. If you've got a Carrier furnace, a Lennox AC, an older boiler, or a ductless mini-split, you want a company that services it competently — not one that shrugs and pivots to a replacement quote.

A good answer: "Yes, we service all major brands," with specifics if you ask. We install Carrier and Lennox, but we repair just about everything that heats or cools a West Michigan home, because after nearly four decades we've seen it all.

6. What's your warranty on parts AND labor?

This one catches a lot of people. A part can carry a one-year manufacturer warranty while the labor to install it carries thirty days — or nothing. When that part fails in month six, you're paying the service call and the labor all over again.

A good answer: both numbers, stated separately, in writing on the invoice. Vague reassurance ("we stand behind everything we do") is a slogan, not a warranty.

7. Will you show me the failed part and explain my options?

An honest diagnosis survives daylight. A swollen capacitor, a cracked heat exchanger on the inspection camera, a burned contactor — these take two minutes to show a homeowner, and a tech doing real work is usually happy to teach.

A good answer: "Absolutely." Then they should lay out your options — repair now, repair with a heads-up about what's next, or replacement if the math genuinely favors it — and let you decide. Our take on that math is in our guide to repairing versus replacing a furnace in Michigan.

8. Do your technicians work on commission?

Here's the question almost nobody asks, and it explains more bad HVAC experiences than any other. When technicians earn a percentage of what they sell, every service call is a sales opportunity, and every twelve-year-old furnace "really should be replaced."

A good answer: no commission on repairs, or at minimum a clear explanation of how techs are paid. At Mazure's there's nobody on commission because there's no sales team — you talk to the owner, not a call center, and I don't make an extra dime by selling you a furnace you don't need. Replacement is the right call sometimes. It's not the right call every time, and a company that recommends it on every visit is telling you how they get paid.

9. How fast can you actually get here — and what happens after hours?

"Same-day service" on a billboard means nothing if the schedule is booked out four days when your furnace dies at 10 p.m. in February. Ask what their real response time looks like right now, whether they offer emergency service, and what an after-hours call costs compared to a regular one.

A good answer: an honest window, not a slogan. "We can have someone there tomorrow morning, and here's what an after-hours visit runs if you can't wait" beats a promise that evaporates when you book.

10. Can you point me to your local track record?

Anyone can buy a polished website. What can't be faked is decades of reviews from your actual neighbors in Jenison, Hudsonville, Grandville, and Grand Rapids. Read the recent reviews and the negative ones — how a company responds to an unhappy customer tells you more than the five-star average does.

A good answer: a Google profile with a long history of local reviews, references on request, and roots in the community you can verify. We've been at it in West Michigan since 1987, and most of our new customers still come from a neighbor's recommendation. That doesn't happen by accident.

What to Do With the Answers

You don't need perfect answers to all ten — you need straight ones. A company that answers plainly about licensing, pricing, warranties, and pay structure is a company that operates in daylight. Hesitation, vagueness, or irritation on two or three of these questions is a pattern, and patterns don't improve after you've signed.

Keep a shortlist of two or three companies that pass, and get on their maintenance schedule before something breaks — the best time to vet an HVAC company is when nothing is wrong, and our annual maintenance checklist covers what a proper tune-up should include.