Comparison guide · UK gas engineers · 2026
Best software for UK gas engineers (2026)
Gas engineers have a more specific operational rhythm than most trades. The combination of emergency callouts, annual boiler servicing, landlord compliance, and Gas Safety Certificate tracking means generic job management software often handles the work — but misses the nuance. This guide covers what gas engineers actually need, and where the main tools differ.
What UK gas engineers actually need from software
The gas engineer's workflow has a higher recurring-work component than most trades. A significant proportion of the work is annual — boiler services, landlord Gas Safety Certificates, planned maintenance — which means customer continuity and reminder systems matter more than they do for reactive-only trades.
Annual service reminders
Boiler services and CP12 renewals are annual. The system needs to surface who is due, when, and who hasn't booked yet.
Landlord portfolio tracking
One landlord, multiple properties. Each property needs its own service history, certificate record, and invoice trail.
Emergency callout management
Boiler breakdowns and gas faults are same-day, reactive work. Quote, job, and invoice often happen within hours.
Repeat domestic customers
Regular domestic customers who use the same engineer year after year. Previous scope, notes, and access details should be immediately visible.
Quote continuity
A boiler replacement quote that becomes a confirmed job that becomes an invoice — no re-entering the customer details or scope.
Outstanding payment visibility
Landlords especially can have multiple outstanding invoices across different properties. A clear view of what's unpaid is operationally important.
What breaks first without software
The most common failure points for gas engineers without a proper system are almost always related to recurring work — because the annual cycle is long enough that things fall through the gaps between service visits.
The landlord whose CP12 expired without a reminder
You did the previous certificate. They expected you to contact them this year. You didn't. The job went to someone else — and the landlord is now legally exposed.
The boiler service that happened but was never invoiced
A domestic job done in October. Invoice created but never sent. Found in March. The customer has moved on emotionally — paying feels like ancient history to them.
The emergency callout that turned into a quote that was never followed up
You attended, found a larger problem, left a quote. Three weeks later the customer's reminders are in a WhatsApp thread you've scrolled past.
Multiple landlord properties and no clear record
A landlord calls about property three. You have jobs for their other properties in a spreadsheet but you can't tell at a glance what was done there, when, or whether it was paid.
Seasonal spike creating invoice backlogs
November and December are peak boiler service months. The job count doubles. Invoice creation — if it's manual — either falls behind or gets compressed into Friday evenings.
Software comparison for UK gas engineers
Pricing is accurate at time of writing — always verify before committing.
WrkGenie
From £19.99/month flat feeBest for: Sole-trader gas engineers and small heating businesses with strong repeat-customer and annual-service workflows
Strengths
- ✔ Annual boiler service reminder workflows — track when each customer's service is due
- ✔ Landlord portfolio management — multiple properties per customer, separate job histories
- ✔ Mobile-first invoicing — CP12 jobs invoiced from site before you leave the property
- ✔ Repeat customer continuity — previous job scope, notes, and invoices visible when a customer calls back
- ✔ Flat monthly fee — not per-engineer or per-job pricing
Limitations
- · CP12 Gas Safety Certificates are managed as job records and notes — not a formal digital certificate issuance platform
- · No formal Gas Safe register integration
- · No multi-engineer dispatch board for larger operations
Verdict: Best fit for sole-trader and small-team gas engineers who want repeat-customer organisation and same-day invoicing without enterprise overhead. The annual service reminder workflow is particularly strong.
Commusoft
Mid-to-high — per-engineer modelBest for: Heating businesses with multiple engineers, recurring maintenance contracts, and formal compliance document workflows
Strengths
- ✔ Built specifically for heating engineers — Gas Safety Certificate workflow is a core feature
- ✔ Recurring maintenance contract management
- ✔ Multi-engineer scheduling
- ✔ Landlord compliance tracking built-in
Limitations
- · Significant onboarding overhead for smaller operations
- · Per-engineer pricing — expensive for one or two-person businesses
- · Feature depth assumes an office coordinator managing the system
Verdict: The right tool for established heating businesses with multiple engineers and formal compliance requirements. The compliance and certificate features justify the complexity for larger operations — less suited to sole traders.
Simpro
Enterprise pricing — typically £100+/monthBest for: Large gas and heating contractors with commercial projects, formal project accounting, and multi-site operations
Strengths
- ✔ Full project management for commercial heating contracts
- ✔ Inventory and parts management
- ✔ Advanced scheduling for large engineer teams
Limitations
- · Implementation takes weeks — not suitable for a sole trader wanting to start immediately
- · Per-user pricing and enterprise costs
- · Designed for large operational teams, not individual engineers
Verdict: Enterprise-level tool for large heating contractors. Not appropriate for sole traders or small domestic gas engineer businesses.
Tradify
Mid-range — per-user pricingBest for: Gas engineers who want more structure than basic invoicing but less complexity than enterprise platforms
Strengths
- ✔ Decent quoting and job tracking
- ✔ Established in the UK trades market
- ✔ Reasonable mobile experience
Limitations
- · No gas engineer-specific compliance features
- · Per-user pricing structure
- · Less repeat-customer workflow depth than WrkGenie
Verdict: A general trades option worth assessing alongside WrkGenie. Neither has formal Gas Safe integration — assess both on trial.
Spreadsheets / paper diary
Free (costs time instead)Best for: Very early-stage gas engineers — first year of trading with a handful of customers
Strengths
- ✔ No cost
- ✔ No learning curve
Limitations
- · Annual service reminders are entirely manual — easily missed
- · No landlord portfolio tracking — properties and invoices live in separate places
- · Invoices sent late, if at all
- · Zero visibility of outstanding payments
- · CP12 tracking done separately, often inconsistently
Verdict: The starting point for most gas engineers. The switch to dedicated software almost always happens when the first annual service reminder is missed or the first invoice forgotten — and it should have happened earlier.
What matters more than features for gas engineers
Does it handle annual recurring work?
This is the single most important operational question for a gas engineer. Annual boiler servicing and CP12 renewals are the backbone of most domestic and landlord businesses. A system that doesn't handle recurring reminders well creates manual overhead at exactly the busiest times of year.
Can I see a landlord's full property picture?
Not just one property — all of them. A landlord with four properties should have four separate job histories, four invoices histories, and four next-service dates, all visible under one customer record.
Is the invoice sent before I leave the property?
Same-day invoicing for boiler services and CP12 jobs changes payment timing significantly. Customers who receive an invoice the same day the engineer left pay faster than those who receive one a week later.
What does the system cost for a one-person operation?
Per-engineer pricing at Commusoft or Simpro levels is justified for larger teams. For a sole-trader gas engineer, a flat monthly fee is the more sensible model — you're not running a dispatch operation.
Related tools and guides
Frequently asked questions
What software do UK gas engineers use to manage jobs?
Common tools used by UK gas engineers include WrkGenie, Commusoft, Simpro, and Tradify. Sole-trader engineers and small domestic heating businesses tend to use simpler, mobile-first tools like WrkGenie. Larger heating contractors with multiple engineers and commercial contracts typically use Commusoft or Simpro.
Do gas engineers need software to manage CP12 Gas Safety Certificates?
For formal CP12 issuance with Gas Safe-registered formatting and digital signatures, dedicated compliance software is available. For the operational side — tracking which properties have certificates, when they're due for renewal, and what was invoiced — job management software handles this well. WrkGenie tracks CP12 jobs as customer records with renewal dates, giving landlords a clear annual reminder without requiring a separate compliance platform.
How do gas engineers manage annual boiler service reminders?
In dedicated job management software, a boiler service job is logged against the customer and property when it's completed. A recurring reminder is set for the same month next year. When the reminder fires, the previous job record is visible — previous scope, previous price, access details — and the booking can be made from the same record. This is one of the most important workflows for gas engineers who do high volumes of landlord and repeat domestic work.
Is WrkGenie suitable for Gas Safe-registered engineers?
Yes — WrkGenie handles the operational and administrative side of a gas engineer's business: scheduling, quoting, invoicing, customer records, and repeat-work reminders. It does not issue Gas Safety Certificates in a formally compliant format; that's handled separately. Most gas engineers use WrkGenie for job management and a separate tool or paper system for certificate issuance.
What do UK heating engineers use for landlord compliance tracking?
Most landlords expect annual Gas Safety Certificates and proactive service reminders. Job management software handles the tracking: each property has its own record, the annual service date is visible, and reminder workflows ensure the next visit is booked before the certificate expires. Commusoft has the most developed landlord compliance workflow; WrkGenie handles the same operational need with less setup overhead.
Written by the WrkGenie team
WrkGenie is a UK-built job management platform for sole traders and small service businesses. Our guides are written from the practical questions we hear from real customers — not for SEO purposes first.
We aim to keep guides factually accurate and up to date. If you spot something out of date or incorrect, let us know.
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