A no-show is a booked visit where the technician arrives and nobody is there to let them in, or the customer calls it off once the truck is already on the road. Repair companies and property managers lose the same things when it happens. The time slot is gone, the drive is unpaid, and the job moves back down the schedule.
The reasons behind a missed appointment are reasonably well understood. Most of them respond to ordinary changes in how a booking is confirmed and followed up.
Healthcare is where missed appointments have been studied most closely, because clinics have tracked them for decades. The Cochrane review on appointment reminders lists forgetting as one of the main reasons patients do not turn up. The same review found that text message reminders improved attendance compared with sending nothing, and cost less per attended appointment than a staff phone call.
There is a limit to how far that research travels. A furnace repair is not a clinic visit, and no equivalent set of trials exists for home services. What carries over is the general finding that a reminder close to the appointment changes what people do, and that the wording of the reminder matters. Two randomized trials run with UK hospital outpatients found that a reminder stating the cost of a missed appointment produced a lower no-show rate than the message the hospital had been sending.
Several regulated industries have already settled the question of what an arrival window should look like.
Under the FCC’s customer service rules for cable operators, the appointment window offered to a customer is either a specific time or a block of no more than four hours during normal business hours. The same rule says the operator cannot cancel an appointment after the close of business the day before, and that a technician running late has to contact the customer and reschedule at a time that suits them.
Ontario uses a similar standard for electricity distributors. The Ontario Energy Board tracks whether a utility offers a window no longer than four hours and arrives inside it, and expects that 90% of the time.
Neither rule applies to a private HVAC, plumbing or electrical company. They are still a useful reference, because they describe what customers across the US and Canada have been taught to expect from a service visit.
Entry into an occupied unit is regulated, and the notice period is set by state or provincial law rather than by the vendor. In California, a landlord has to give the tenant written notice of intent to enter, and 24 hours is presumed to be reasonable notice. The notice has to state the date, the approximate time and the purpose of the entry. Other states and provinces set their own periods, so the rule to follow is the one where the property sits.
This changes what can be scheduled. A same-day slot may not be available to fill, and a vendor who arrives before the tenant has been notified can be turned away at the door. Lining up the notice, the tenant and the vendor is scheduling work in its own right, and it usually takes more than one phone call.
Most of the work above is repetitive and tied to a clock. It has to happen at a set point before the visit, and it does not require the person doing it to live in the same city as the property.
A scheduling team working off site can take booking calls during and after office hours, confirm details and contact numbers while the customer is still on the line, run the reminder sequence, handle reschedules so the slot gets refilled, and update the field service software so dispatch sees the change in time to act on it.
Staffing is part of why companies look at this. The Bureau of Labor Statistics projects about 40,100 openings a year for heating, air conditioning and refrigeration mechanics and installers through 2034, with employment growing 8% over the decade. Office and dispatch roles are hired from the same local labor market as the technicians, and they compete against every other employer in town.
Automated calls and texts in the US fall under the FCC’s rules implementing the Telephone Consumer Protection Act. Businesses have to honor do-not-call and consent revocation requests within a reasonable time, and no later than 10 business days after receiving the request. In practice, a reminder program needs a way to record consent when the number is taken, catch replies such as STOP, and push those opt-outs back into the booking system so nobody gets messaged again by mistake.
Canada has a separate set of rules for commercial electronic messages. Confirm what applies in the provinces you serve before turning on an automated reminder sequence.
Track these for a few weeks before changing anything. Once there is a baseline, it becomes clear which slots and which job types are producing the misses, and whether the problem sits in the reminder, the window, or the contact details on file.
Reducing no-shows comes down to doing a handful of small things on time, every time. If you want to see how the rest of the dispatch function can run off site, including intake, scheduling, reminders and after-hours booking, read our overview of dispatch outsourcing.