The best gas certificate software, and how to choose it.
Gas certificate software is the app a Gas Safe registered engineer uses to produce CP12s and other records on site. There’s no one “best” tool for every gas engineer, the right choice depends on your trade mix, team size and budget. Here are the seven things that separate software that saves you evenings from software that just moves the paperwork onto a screen.
Full disclosure: we build Manifold. So rather than rank tools, we’ve written the checklist we’d hold any option to, including ours, and linked the head-to-head comparisons so you can judge for yourself.
Seven things that matter.
Score every tool you try against these. The order roughly tracks how much each one affects your day.
1. Purpose-built for Gas Safe work
The best tools are shaped around the CP12 and related gas records, not a generic job app with a certificate bolted on. Look for appliance registers, defect handling and the actual check flow an engineer follows.
2. Works offline, on site
Lofts, basements and vans rarely have signal. Capture readings, photos and signatures offline and sync later, anything that needs a connection to save the job will fail you on the doorstep.
3. Compliant, tamper-evident records
Records should be immutable once generated and produce clean, branded PDFs for landlords and tenants. That's what makes the software your system of record, not just a form filler.
4. Automated renewal reminders
A gas safety record is valid 12 months. Software that tracks next-due dates and chases renewals for you, rather than leaving it to a spreadsheet, is where the real time saving lives.
5. Easy import and no lock-in
You should be able to bring your customers and properties in from a CSV, and get your data back out via an API or export. Avoid tools that make leaving hard.
6. Fair, transparent pricing and a real trial
Published per-engineer pricing and a genuine trial (ideally no card) let you judge a tool on your own jobs. Be wary of quote-only pricing you can't compare.
7. Tenant and landlord delivery
For landlord work, getting the record to the tenant within the legal window matters. Secure links and a landlord/agent portal turn delivery from a chore into a click.
The tools most gas engineers compare.
These are the options that come up most often for UK gas and heating work. Run each through the checklist above with your own jobs in mind.
Options at a glance
Manifold
Purpose-built for UK gas engineers: offline capture, the full renewal lifecycle, an open API and a 30-day free trial from £15 per engineer.
Gas Engineer Software
A long-standing UK gas-specific tool with an offline certificate engine.
Commusoft
A broad, all-trade field-service platform used by gas, plumbing and electrical firms.
Joblogic
A multi-trade field-service platform with gas and F-Gas certificate workflows and published entry pricing.
Manifold
Purpose-built for UK gas engineers: offline capture, the full renewal lifecycle, an open API and a 30-day free trial from £15 per engineer. (This is our product, judge it by the checklist above.)
See the features →Gas Engineer Software
A long-standing UK gas-specific tool with an offline certificate engine. If you're already on it, here's how a move looks.
Switching from Gas Engineer Software →Commusoft
A broad, all-trade field-service platform used by gas, plumbing and electrical firms. Strong if you need multi-trade breadth.
Commusoft vs Manifold →Joblogic
A multi-trade field-service platform with gas and F-Gas certificate workflows and published entry pricing.
Joblogic vs Manifold →Details reflect each product as publicly described on 8 July 2026 and change over time, verify current features and pricing on each vendor’s site. Gas safety work must be carried out by an appropriately Gas Safe registered engineer.