What to Expect During a Service Visit

Why this matters

A service visit has a shape, and knowing it takes most of the stress out. A good technician will ask you questions before touching anything, find the cause, explain it, put a price in writing, and wait for your yes before doing the work. If you know that is the order, you know what to have ready, what to ask, and when a visit is going off track: a price before any diagnosis, work started before you agreed to it, or pressure to decide on the spot.

It also helps to know what you are paying for at each step, and that you can stop at any of them.

The visit, in order

1. The arrival window. Most companies book a window rather than an exact time, often two to four hours, because the call before yours can run long. Many will call or text when the technician is on the way. If the window is about to pass with no word, it is fine to call and ask.

2. Arrival. The technician should identify themselves and the company. Many wear a uniform and arrive in a marked vehicle; if anything about the visit does not match what you booked, call the company's main number to confirm before letting someone in. Expect shoe covers or a drop cloth where they work.

3. Questions. Before they open anything, a good technician asks what you have noticed. This is not small talk. Your answers often point straight at the cause and save diagnosis time.

4. Diagnosis. They inspect and test. That can mean removing covers, taking readings with meters and gauges, running the equipment, or briefly shutting off power or water to what they are working on. Simple problems take minutes; intermittent or hidden ones can take much longer.

5. Explanation. They tell you what they found, in words you can follow, and ideally show you: the failed part, the reading against what it should be, a photo of the inside of the unit. Ask them to slow down or explain a term whenever you need to.

6. Written price and options. Before any repair, you should get the price in writing, on paper or on a tablet or phone screen. If there is more than one reasonable way to fix it, you should hear the options, including the most basic repair that solves the problem.

7. Your approval. Nothing beyond the diagnosis should happen until you say yes, usually by signing or tapping to approve the option you chose.

8. The work. They do the repair you approved. If they find something new along the way that changes the price, they should stop and ask before going further.

9. Walk-through and paperwork. They show you that it works, tell you anything you should watch for, and leave or send an invoice listing what was done, the parts used and any warranty. Keep it. See related: Your House Records File and What Goes In It.

The questions you will probably be asked

Having these answers ready shortens the visit.

• When did it start, and did anything happen just before? A storm, a power outage, a recent repair, new work in the house.
• What exactly does it do? "No cooling" can mean the fan runs and the air is warm, or nothing runs at all, and those point to different causes.
• Is it constant or does it come and go? Does it happen at a certain time of day, in certain weather, or after a certain amount of running?
• Any sounds, smells, error lights or codes? A photo or a short phone video of an intermittent sound is genuinely useful.
• What have you already tried? A reset breaker, a new filter, a thermostat change. Say it plainly; it saves the technician repeating it and is never a problem.
• How old is it, and has it been serviced? The label or a service sticker usually answers this. See related: Finding Out How Old Your Home Equipment Is.

What a diagnostic charge pays for

Many companies charge a diagnostic or service-call fee for the visit itself. It pays for the trip, the technician's time and skill to find the cause, and the testing equipment. Finding the problem is often most of the work.

Ask when you book: what the diagnostic fee is, what it includes, and whether it is applied to the repair if you go ahead. Many companies credit some or all of it toward the repair; others keep it separate. Both are common; what matters is that you know before the truck arrives.

If you decline the repair, you normally owe only the diagnostic fee. Ask the technician to note what they found on the invoice, so you have it in writing for a second opinion or for later.

You can say no, or take time to decide

Saying no to a repair is always an option, and so is saying "not today." A professional technician will not argue with either.

Taking time is often the right call for anything large, like a replacement or a repair that costs a sizable share of what new equipment would. Ask for the options in writing and decide after you have read them, talked it over or gotten a second opinion.

The exception is an unsafe condition. If the technician finds something dangerous, such as a gas leak or a furnace putting exhaust into the house, they may shut that equipment off and tag it so it cannot be used, even if you decide not to repair it today. That is about safety, not sales. See related: What the Tags and Stickers a Tech Leaves Behind Mean.

A bigger sale may come with cancellation rights. For many sales made in your home, the Federal Trade Commission's Cooling-Off Rule gives you three business days to cancel, with exceptions, including in many cases repair work you called the company out to do, and an emergency repair if you waive it in writing. Some states add their own rules. If a cancellation right applies, the paperwork should say so. This is not legal advice; if it matters to your decision, ask before you sign.

Worked example: an air conditioner that stopped cooling

The setup. A July afternoon, 94 F outside. The air conditioner's indoor fan runs but the air from the vents is warm. The homeowner changed the filter two weeks ago and checked that the outdoor unit's breaker was on. They booked a visit with an 8 a.m. to 12 p.m. window the next day and were told the diagnostic fee and that it would be credited toward any repair done that day.

Arrival. The company texted at 10:10 a.m. that the technician was on the way. He arrived at 10:40, introduced himself, put on shoe covers, and before going to the equipment, asked questions.

TECH: What's it doing, in your words?
CUSTOMER: Fan blows, but the air's warm. Since
  yesterday about three.
TECH: Anything happen around then? Storm, power
  blink?
CUSTOMER: Thunderstorm around two.
TECH: Outside unit, is it humming, silent, fan
  turning?
CUSTOMER: I think it hums. The fan doesn't spin.
TECH: Breaker tripped at all?
CUSTOMER: No, it was on. New filter two weeks ago.
TECH: Good, that rules a couple things out. I'll
  check the outdoor unit first.

(about 25 minutes later, at the outdoor unit)
TECH: The capacitor's failed. That's why it
  hums and the fan won't spin. Replacing it
  should get you cooling today. Here's the
  price for that, on the screen.
CUSTOMER: And the other part you showed me?
TECH: The contactor's worn but working. I can
  replace it while I'm here, that's option two,
  also on the screen. Or leave it and we look
  at it at your next tune-up. Either's fine.
CUSTOMER: The unit's about fourteen years old.
  Should I be replacing it?
TECH: Not because of this. A capacitor is a
  normal repair at any age. If you want to talk
  about replacement someday, I can have someone
  call you. No need to decide today.
CUSTOMER: Just the capacitor, then.

What happened in those 25 minutes. With power off at the outdoor disconnect, the technician tested the outdoor unit's run capacitor, the part that helps the motors start and run, and found it reading well below the rating printed on its label. That matched what the homeowner had heard: a hum with a fan that would not turn. He also noted the contactor, the switch that turns the outdoor unit on, had some pitting on its contacts but was still working. He showed the homeowner the meter reading beside the rating on the capacitor's label, and a photo of the contactor, before naming any price.

Approval and work. The homeowner tapped to approve option one on the technician's tablet. He replaced the capacitor, restored power, and watched the system run until the air at the vents was cooling.

Walk-through. He showed the homeowner the cool air at a supply vent, the old capacitor, and the invoice: diagnosis, part replaced, the diagnostic fee credited against the repair as promised, and the part's warranty. He noted the worn contactor on the invoice as "monitor at next service." Total time on site: about 55 minutes, 10:40 to 11:35.

What would have changed this. If the homeowner had asked for both repairs without understanding them, nothing would have been wrong with that, but the point of the options conversation is that they did not have to. If the technician had quoted a full system replacement without first testing the capacitor, that would have been the signal to stop, thank him for his time, pay the diagnostic fee and get a second opinion. And if the outdoor unit had been tripping its breaker repeatedly, the homeowner should not have kept resetting it; one reset is the limit. See related: How to Reset a Tripped Breaker Once.

When a visit is going off track

• A price, or a recommendation to replace, before any testing.
• Work started that you did not approve.
• Pressure to decide now, such as a price that is "only good today."
• No written price, or an invoice that does not list what was done.

Any of these is a fine reason to pause, ask questions, or call the company's office.

References

• See related: How to Get Your Home Ready for a Service Visit
• Federal Trade Commission, the Cooling-Off Rule, for sales made at your home
• See related: How to Read a Contractor's Estimate
• See related: When to Stop and Call a Licensed Pro Around the House