For HVAC, plumbing & electrical shops

When the phone rings, we pick it up.

We answer every call, book the job, and text you the details. You stay on the truck.

No hardware. Nothing to learn. Live in 7 days.
1 in 3
calls to small contractors goes unanswered
$0
average lost on a missed service call
24/7
phone coverage. Nights, weekends, holidays.
You know the drill

The phone is ringing. You're under a sink.

Jobs go to whoever picks up first. You can't pick up if you're already on one.

Voicemails don't pay.

No answer, customer calls the next shop. You never knew the job existed.

Whiteboards and sticky notes.

Half your day is reading schedules and chasing callbacks. None of it bills.

Hire an office person?

Good luck finding one. Or training one. Or keeping one.

How it works

A real conversation. Just not one you have to have.

Sounds like an office manager who knows your business. Asks the right questions. Sends you the details.

1

Customer calls your shop.

Forward your line, keep your number. After two rings, we pick up.

2

We ask the right questions.

Address. What's broken. How urgent. Photos by text. Emergencies route to your cell.

3

You get a text.

Name, address, problem, photos, time slot — already on the calendar.

Text from Sentrel — 8:42 AM LIVE
Incoming call
Linda Hernandez calling — picking up…
Sentrel
New job booked
Linda Hernandez
412 Oak St, Springfield
Kitchen sink leaking — photo attached
Booked: Today, 2:00–4:00 PM
Heads up
Linda was a customer in Sept '24 (water heater). Repeat — text her your ETA.
You
10-4. Send her my ETA.
Built for trades

It works the way you already work.

Built for shops that still print invoices and schedule on a clipboard.

Knows a clog from a slab leak.

Trained on real trade calls. Emergencies hit your cell, not voicemail.

Photos by text, attached to the job.

Your tech rolls up knowing what they're walking into.

Sends ETAs automatically.

Cuts no-shows and "where's my guy?" callbacks.

Works with what you've got.

ServiceTitan, Jobber, Housecall Pro, Google Calendar — or paper.

Nights, weekends, holidays.

The phone is always covered. Routine calls get booked for Monday.

You stay in charge.

Set the rules — what gets booked, what gets passed through.

We were missing 15 calls a week. Sentrel paid for itself in the first month — picked up two boiler installs that would've gone to the next guy.
Tom R. Owner, Riverside Heating & Plumbing
Pricing

Straightforward. No long contracts.

Flat monthly. Pay per call. That's it.

Shop Plan

For shops with 3–25 trucks.

Monthly base$299/mo
Per call answered & qualified$2.50
Per estimate booked$8
After-hours coverageIncluded
Setup & onboardingFree during pilot
60-day pilot. If we don't book more jobs than we cost, you don't pay the base. Cancel anytime.

Stop losing jobs to voicemail.

15 minutes. Hear what your phone sounds like with Sentrel on it.

Book a walkthrough