Gas Engineer Software (2026): 10 UK Tools Compared

Gas work comes with more paperwork than most trades. Every safety check, service and installation needs a record, and every record has to be right, findable and with the customer on time.

That's why so many engineers have moved from paper pads to software. The tools below cover different shapes of business: certificate apps for engineers on the move, job management for heating and plumbing firms, field service platforms for bigger teams and systems for installers adding heat pumps or solar. They're listed alphabetically and in no particular order, and each description comes from the tool's own website, read this week. For more ways to save admin time, my guide to AI for UK tradespeople is worth a look.

Gas engineer software side by side

I checked the free plan column on each tool's own website, as of Oct 2026. Yes means the site names the tool, an account or a plan or version of it as free. Trial only means a time-limited trial or a small free allowance. Not stated means the pages I read named neither, even where there's a button inviting you to start, so check the tool's own page before you sign up.

Tool	Type	Good for	Free plan
BigChange	AI-first field service platform	Growing UK field service firms	Not stated
Commusoft	Field service management software	Office scheduling plus field forms	Not stated
Gas Engineer App	Gas certificate app	CP12 certificates done on site	Trial only
Gas Engineer Software	Job management for heating and plumbing	Boiler service reminders and certificates	Trial only
iCertifi	Certificate software and apps	Engineers who also do electrical work	Not stated
Joblogic	Field service management software	Reactive maintenance and compliance	Trial only
JobStaq	Gas engineer software and app	Customer self-service for job updates	Trial only
Payaca	CRM for solar and heat pump installers	Heat pump installs and MCS paperwork	Not stated
Powered Now	Job management app for UK trades	Sole traders working from a phone	Trial only
ServiceM8	Job management software	Running jobs from first call to invoice	Trial only

Ten gas engineer software tools to try

BigChange

Best for: UK service businesses that want job management with site history, alerts and client access rules linked together.

Commusoft

Best for: Heating firms that want job scheduling, tracking and quoting in the office, plus mobile digital forms and stock control in the field.

Gas Engineer App

Best for: Gas engineers who want certificates, quotes and invoices finished before leaving site, with gas rate and tightness calculators built in.

Gas Engineer Software

Best for: Heating and plumbing companies that want records, certificates, boiler service reminders and invoices run from one system.

iCertifi

Best for: Engineers who need a gas certificate app alongside electrical, fire and PAT testing certificates from the same supplier.

Joblogic

Best for: Maintenance contractors handling urgent reactive jobs who also want a dedicated compliance platform for their records.

JobStaq

Best for: Small gas firms that want scheduling, digital certificates and a portal where customers can manage their own jobs.

Payaca

Best for: Installers adding heat pumps or solar who want design, quotes, MCS and DNO paperwork and payment tracked in one system.

Powered Now

Best for: Sole traders and small teams who want job management, invoicing and scheduling in an app built in the UK for UK trades.

ServiceM8

Best for: Contractors who want quoting, scheduling, job completion, invoicing and payment handled from the customer's first call onwards.

Which tool suits your gas business

• Certificates finished before you leave site: Gas Engineer App.
• Customers managing their own jobs online: JobStaq.
• Heat pump installs and MCS paperwork: Payaca.
• Reactive maintenance with compliance records: Joblogic.
• Gas certificates alongside electrical ones: iCertifi.

The landlord records your software should support

The Health and Safety Executive (HSE) says landlords must have an annual gas safety check carried out by a Gas Safe registered engineer. It also says they must keep a record of the check for 2 years and give each existing tenant a copy within 28 days of the check.

Landlords and letting agents are some of your most regular customers, so software that stores certificates, sends renewal reminders and emails records on time makes you easy to work with. It also means you can find any past certificate in seconds when a landlord asks.

What to check before you switch software

1. Which gas certificates and forms come built in.
2. Whether certificates work offline in a basement or a loft.
3. How reminders for annual checks and services are sent.
4. Which accounting software it connects to.
5. How easily you can bring across customer and appliance records.

Certificate apps, job management and field service platforms

Certificate apps focus on getting forms completed and signed on site, with calculators and quotes added. They're ideal for sole traders who mainly need the paperwork done quickly and correctly, and they're quick to learn.

Job management software adds scheduling, customer records, reminders and invoicing for small teams. Field service platforms add dispatching, stock, contracts and reporting for firms with an office and several vans. Buy for the business you'll be in a couple of years from now, not just today.

Another comparison readers ask for is in our roundup of job management software.

Software mistakes gas businesses make

• Running paper and software side by side. Records end up in two places.
• Skipping setup of reminders. They bring in repeat work automatically.
• Choosing without your engineers. The app has to work for them on site.
• Ignoring data import. Retyping old customers wastes weeks.

Teams with this need often check one more list, which our roundup of AI invoice generators compares.

Signs the software suits your team

• Engineers can finish a certificate without calling the office.
• Reminders go out without anyone remembering to send them.
• Any past certificate is easy to find.
• Invoices go out the same day as the job.

Do you make gas or heating software? Tool makers can ask to be considered for a featured place on this list.

My plain advice on gas engineer software

Start with the certificates and reminders, because that's where most of your admin time goes and where mistakes lose you customers. Ask for a trial, complete a few real jobs with it and get your engineers' opinion before you commit the whole business.

If you also run an office team, choose software that grows with you rather than one you'll outgrow in a year. My guide on why every plumber needs insurance covers another part of running a safe trade business.

A closely related walkthrough: Best AI Report Generators (2026): 11 Tools Compared.

Frequently asked questions

What is gas engineer software?

Software that helps gas and heating businesses manage jobs, gas safety certificates, reminders, quotes and invoices.

Can gas engineers issue digital certificates?

Yes, many tools on this list let engineers complete and send gas safety certificates from a phone or tablet.

How long must landlords keep gas safety records?

HSE says landlords must keep a record of each gas safety check for 2 years.

Is there free gas engineer software?

Most tools on this list offer a free trial rather than a free plan, so check the table.

Does gas engineer software work offline?

Many certificate apps work offline on site and sync when you're back on a connection, so ask each supplier.

Can it send service reminders automatically?

Several tools send reminders for annual checks and services, which helps bring repeat work back.