Best software for gas and heating engineers (UK)

A gas engineer's software has one job that a plumber's does not: producing gas safety paperwork that stands up to HSE rules, then reminding you (and the customer) when the next one is due. We compared the UK options on that first, then on quotes, scheduling and cost, based on pricing pages checked on 12 October 2026 and published features.

What does a gas and heating engineer need from software?

Gas Safe records and notices

The core forms are the landlord gas safety record (often called a CP12), the service or maintenance record, and the warning notice for unsafe situations. HSE sets what a landlord record must contain, including each appliance checked, the engineer's name, registration number and signature, any defect and the action taken. A good app builds those fields in so you cannot miss one. We cover the rules in detail in our guide to gas certificate apps.

Annual service reminders

Landlord checks are annual, and HSE allows a check up to 2 months early while keeping the original due date. Boiler services follow the same rhythm. Automatic reminders turn every install into years of repeat work, so treat this as a money feature, not an admin one.

Boiler installs and commissioning

Installs mean bigger quotes, deposits, materials and a commissioning checklist at the end. Check that the commissioning and unvented cylinder forms you use are in the app, because not every certificate app lists them.

Gas Safe registration on every record

HSE says a landlord record issued after 1 April 2009 is only valid if the engineer is on the Gas Safe Register. Your software should store each engineer's registration number and print it automatically, especially once you employ others.

Heat pumps and oil (the HVAC side)

If you are adding heat pumps or oil work, check for heat pump commissioning and oil forms (such as CD/10 and TI/133D). Gas Engineer Software, Gas Certificate App, Powered Now and Tradify each list some of these.

How do the main gas engineer apps compare?

Which software should a gas engineer pick?

What about ServiceM8? It is our best value pick for many trades, but we found no named UK CP12 or warning notice form, only generic PDF forms. For gas work that is a real gap. See our ServiceM8 review if you mostly do plumbing and only occasional gas.

Two more certificate-only apps worth knowing

Gas Certificate App (Trade Apps Ltd) costs £20 per user a month or £216 a year ex VAT on its own site, or £20.49 a month through the App Store. Its form list is the broadest of the standalone apps: CP12, breakdown, service, warning notice, boiler commissioning, unvented cylinder, non-domestic, LPG, leisure and catering records, CP15 test and purge, oil forms, power flush and heat pump commissioning. It has 4.2 from 232 ratings on the UK App Store, checked 12 Oct 2026.

iCertifi GasCert costs £24.99 a month or £149 a year (the vendor says prices include VAT). It covers CP12, CP1, warning notices and service reports, but lists no commissioning form, and it had only 2 App Store ratings when we checked. Both apps, and Gas Engineer Software, are compared side by side in our gas certificate app guide.

What does gas engineer software cost? Two worked examples

Sole gas engineer

The gap between a certificate app and full job management is about £12 to £19 a month. If you currently write quotes in Word and invoices in a spreadsheet, that buys back several evenings a month.

Five-person heating company

Which features matter most (and which can you skip)?

Must have

• The exact gas forms you issue. Check the list against last month's paperwork, including warning notices and commissioning.
• Automatic service reminders. The cheapest marketing a heating firm has.
• Offline working. Boiler cupboards and basements kill phone signal. Gas Engineer Software, Powered Now, Commusoft and Joblogic all say their apps work offline.
• Email and print straight from site. HSE requires a printable record and a paper copy on request.
• Accounting sync. Saves re-keying every invoice.

Nice to have

• Customer portal (Powered Now Premium, Commusoft, Joblogic).
• GPS tracking of engineers once you have three or more vans.
• Stock control, if you hold boilers and parts in a unit.

Check the digital record rules

HSE accepts electronic gas safety records if they can be printed on request, are kept secure from loss and interference, and identify the engineer, for example by an electronic signature, registration number or name. Any app on this page should meet that if you use it properly, but check two things in the trial: that your signature and Gas Safe number appear on the PDF, and that you can still pull up last year's record in seconds when a landlord or letting agent rings. A tenant can receive an emailed copy if they agree, but must get paper on request, so keep a printer in the van or at home.

Skip for now

• AI receptionists and AI writing tools until the basics run smoothly.
• Enterprise reporting if you have fewer than six engineers.

For a wider look at scheduling and dispatch systems, read our field service management software guide. If you do more bathrooms and leaks than boilers, our plumbing software guide is a better starting point.

What mistakes should you avoid when switching?

1. Losing your certificate history. Export every past record as PDF before you cancel the old system. Landlords must keep records for at least 2 years, and they will ask you for copies.
2. Losing your reminder list. Your list of annual due dates is your future income. Import it before anything else.
3. Signing a long contract on a demo. Joblogic customers usually sign 24 or 36 months and Commusoft uses 12. Run the free trial with real jobs first.
4. Paying per user for office staff who never go on site. Ask how office-only users are charged.
5. Assuming every app has every form. iCertifi GasCert, for example, lists no commissioning form. Check before you switch.
6. Switching in the October to January rush. Heating breakdowns peak in winter. Move in late spring or summer.