Best Scheduling Software for Plumbers & Gas Engineers (UK, 2026)

Double-bookings, missed service reminders and a diary spread across a wall planner, a group chat and someone’s memory. That’s what scheduling looks like for a lot of heating and plumbing businesses, and it quietly costs you work.

This guide compares the best scheduling software for UK heating and plumbing businesses, so you can pick the diary that suits how your team actually works, whether you’re running solo, managing a couple of engineers from the van, or coordinating a handful of them from an office.

What makes scheduling software actually good for heating & plumbing

A calendar shows you what’s on. Good scheduling software runs the day. For a gas or heating business specifically, the difference comes down to a handful of things:

• A mobile diary your engineers actually use. Most of the working day happens on a phone, not at a desk. If the diary is awkward on mobile, it won’t get used.
• Drag-and-drop assignment and “who’s where today.” You need to move a job around in seconds and see at a glance where everyone is.
• Automated service reminders. Boiler services are your bread and butter. Software that chases them automatically refills next year’s diary without you lifting a finger.
• Customer appointment notifications. Fewer “I forgot you were coming” calls.
• The diary tied to the job. The booking should link to the job sheet, the gas certificate and the invoice, not sit in a separate app you have to reconcile by hand.

Put simply: the best scheduling software for a UK gas or heating business is the one that connects your diary to your jobs, certificates and reminders in one place, rather than leaving them scattered across separate tools.

Gas Engineer Software (GES)

— Best Overall Scheduling Software for Heating & Plumbing Businesses

Gas Engineer Software (GES) is the business platform built specifically for UK gas and heating businesses, and scheduling sits right at the heart of it. You book a job into the diary, assign it to an engineer, and it lands straight on their phone with the customer details, the address, and the history of that property attached. When they’re on site, the same job carries through to the gas certificate, service record, and invoice — so the booking isn’t a standalone calendar entry, it’s the start of the whole workflow.

The standout for most businesses is the automated service reminder system. Every boiler service you complete can set up next year’s reminder automatically, so your diary keeps refilling with repeat work instead of you having to dig through old jobs to chase it.

For a small team coordinating engineers from the field, the shared diary, drag-and-drop assignment, and customer notifications take the day-to-day juggling off your plate — which is exactly why it works well for growing teams as much as sole traders.

Best for: owner-led UK gas and heating businesses with 1–5+ engineers.

Pricing: from £19 per user/month. Automated service reminders are included on Core and above. 14-day free trial, full feature access, no card required.

Commusoft

Commusoft is a genuinely capable platform that bills itself around multiple trades, and it’s strong on the things larger operations need: dispatch boards, planned maintenance contracts, stock and asset tracking, and detailed back-office reporting. If you’ve got a full-sized dedicated office team running the diary while engineers stay on the tools, there’s a lot here.

The catch for smaller businesses is that it’s built for exactly that setup — Commusoft now points itself at businesses with six or more staff, and the onboarding, complexity and price reflect a system designed around a back office. For an owner-led business of one to five engineers, a lot of that horsepower goes unused.

Great for: heating and plumbing businesses with six or more engineers and dedicated office staff.

Pricing: quote-only; reconstructed at roughly £60+ per user/month (check directly).

Tradify

Tradify is one of the most polished job management tools around for multi-trade businesses, with a great reputation. The scheduling, quoting, and invoicing are slick, and if you run a mixed trade business it covers a lot of ground.

Because it’s built for every trade rather than gas and heating specifically, the parts that matter most to you — gas certificates, service records, landlord paperwork — sit outside the core. Plenty of engineers we speak to end up running Tradify alongside a separate certificate tool, which is two subscriptions and two systems doing a job one gas-native platform could handle.

Great for: multi-trade businesses that want a polished all-rounder.

Pricing: starting from £34 per user/month.

Powered Now

Powered Now is UK-built and leans hard into speed-to-cash: quick quoting, invoicing, Making Tax Digital support and a library of trade forms, plus an AI receptionist for missed calls. For a general trades business that wants to win the job and bill it fast, it’s a solid option.

It’s designed broadly for tradespeople — electricians, builders, decorators, plumbers — rather than for gas and heating specifically, so the renewables and gas-compliance side isn’t its focus. That gap is a common reason heating engineers end up looking elsewhere as their certificate and service workload grows.

Great for: general UK trades wanting fast quoting and invoicing.

Pricing: starting from £28 per user/month.

BigChange

BigChange is an enterprise-grade field service platform built around vehicles, dispatchers and back-office coordination, with a built-out AI and intelligence layer on top. For a bigger operation routing a fleet from a central office, it is a serious contender.

The question heating and plumbing business owners need to ask themselves is whether they can take advantage of these enterprise-level features. The scheduling is capable, but the platform heavily leans into the larger businesses, typically multi-trade and with full-scale office teams and vehicle fleets. The price reflects that scale.

Great for: larger field service operations with vehicle fleets and a central office.

Pricing: quote-only; typically around £80+ per user/month (check directly).

Google Calendar, WhatsApp and a paper diary

This is where most engineers start, and it’s worth being honest about it: when it’s just you, a shared calendar, a group chat and a notepad are free, familiar and perfectly fine.

It falls apart the moment the business grows. Add a second engineer and have twice as much to worry about. Build up a book of service customers and the reminders become scattered, which means some of them never happen.

On top of that, nothing is tied to the job, so the certificate, the invoice and the customer history all sit somewhere else. The “free” option quietly costs you in missed work and wasted evenings.

Suitable for: a sole trader doing a handful of jobs who isn’t ready for dedicated software yet.

Pricing: free.

At-a-glance comparison

 All prices ex VAT and accurate as of June 2026. Commusoft and BigChange are quote-gated, so their figures are estimates — check vendor sites for current pricing.

How to choose: questions to ask yourself

• How many engineers are you coordinating? One or two and you want simple and mobile-first. 10+ with office staff and a heavier platform starts to earn its keep.
• Is your team mostly working from their phones? If the diary doesn’t work well on mobile, your engineers won’t use it — and a system nobody uses is worse than a paper one everybody does.
• Do you run boiler services and maintenance contracts? If repeat work is your income, automated service reminders aren’t a nice-to-have — they’re the feature that fills your diary.
• How much of your paperwork is gas certificates and records? The more of your day that’s CP12s, service records and landlord paperwork, the more a gas-native system pays off over a generic one.
• Are you based in the UK? UK VAT, UK compliance and support in your time zone matter more than they look when something goes wrong.
• Do you want one system, or are you happy stitching a few together? Running scheduling in one app and certificates in another works until it doesn’t. One platform that does both removes the join.

Keep your diary full and your team on the same page — try Gas Engineer Software free

Start your 14-day free trial. Full feature access, no card required.

Want to sort the rest of the admin while you’re at it? See our guides to the best CRM for heating & plumbing teams and the best invoicing software for plumbers & gas engineers.