Key Takeaway
Gas certificate software compared: Powered Now, Gas Checker, Commusoft and Joblogic from £28/mo. CP12 and Gas Safe compliance tools.
Key Takeaway
Powered Now (from £28/user/month) is the only job management platform with built-in Gas Safe certificates. If you just need a lightweight certificate app, Gas Checker is free for basic use. For larger firms wanting gas compliance inside a full field service system, Commusoft and Joblogic offer custom form modules — but neither generates official Gas Safe certificates natively.
The best gas certificate software for UK gas engineers depends on whether you need a full job management system or just a certificate tool. For engineers who want quoting, scheduling, invoicing and Gas Safe certificates in one app, Powered Now is the only platform that does it all from £28 per user per month. For engineers who already have a job management system and just want to go paperless on certificates, Gas Checker handles CP12s, landlord gas safety records and warning notices from a phone or tablet. Certsure is another dedicated option used by Gas Safe registered engineers for compliance paperwork. For mid-size and large firms running Commusoft or Joblogic, both platforms let you build gas compliance forms inside their existing job workflows — but you are capturing data, not generating official certificates.
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Why Gas Certificate Software Matters in 2026
Every gas engineer registered with Gas Safe is legally required to keep records of all gas work carried out. For landlord gas safety checks — the CP12 — the record must be issued within 28 days and kept for two years. The Gas Safety (Installation and Use) Regulations 1998 are not optional, and getting caught without proper records means losing your Gas Safe registration, which means losing your livelihood.
Paper certificates are still legal. But they are slow, easy to lose, hard to search, and impossible to back up properly. When a landlord phones asking for a copy of last year's CP12 and you are digging through a filing cabinet in the van, that is time you are not earning. When Gas Safe does an inspection and you cannot produce records quickly, that is a problem you did not need.
Gas certificate software solves this by letting you complete certificates on a phone or tablet on site, email them to the customer immediately, store them against the property record, and back them up automatically. The best tools also pre-populate fields from previous visits, validate entries before you submit, and sync with your Gas Safe record — which means less time on paperwork and fewer errors that trigger queries.
If you are still running your plumbing business on paper and spreadsheets, our guide on the plumbing business that runs itself explains what automation looks like end to end before you invest in any single tool.
Gas Safe Legal Requirements: What You Actually Need
Before choosing software, it helps to be clear on what the law requires. The requirements differ depending on the type of work.
Landlord Gas Safety Records (CP12)
Under Regulation 36 of the Gas Safety (Installation and Use) Regulations 1998, landlords must have all gas appliances, flues and pipework checked annually by a Gas Safe registered engineer. The engineer must issue a record — commonly called a CP12 — that includes:
- The address of the property
- The name and address of the landlord
- A description and location of each appliance and flue checked
- The Gas Safe registration number of the engineer
- The date of the check and the date the next check is due
- Any defects found and any action taken
- Confirmation that the safety check has been carried out in accordance with the regulations
The landlord must provide a copy to existing tenants within 28 days, and to new tenants before they move in. The engineer must keep a copy for two years.
Domestic Gas Work
For all notifiable domestic gas work, engineers must notify Gas Safe within 30 days via the Gas Safe notification portal or an approved software tool. This includes installations, replacements, and any work on gas appliances, pipework and flues. A commissioning checklist or benchmark certificate is expected for new boiler installations.
Commercial Gas Work
Commercial gas work — anything in a non-domestic premises — requires its own set of records and certificates. Warning notices and labels must be affixed to any appliance found to be unsafe, categorised as Immediately Dangerous (ID), At Risk (AR) or Not to Current Standards (NCS). The record-keeping requirements are similar to domestic work, but the risk profile is higher and the inspection regime is more thorough.
Gas Certificate Software Compared
| Software | Type | Gas Safe Certs | Price (monthly) | Job Management | Offline | Best For |
|---|---|---|---|---|---|---|
| Powered Now | Full platform | Built-in (CP12, warning notices, commissioning) | From £28/user | Yes — quotes, jobs, invoices | Full offline | Gas engineers wanting one app for everything |
| Gas Checker | Certificate app | Yes (CP12, warning notices, labels) | Free basic / paid tiers from ~£10/mo | No | Yes | Engineers who just need digital certificates |
| Certsure | Certificate platform | Yes (gas and electrical) | Subscription-based, varies | No | Limited | Multi-discipline engineers (gas + electrical) |
| Commusoft | Full platform | Custom forms only | From £99/mo | Yes — full field service | Partial | Larger firms with office staff |
| Joblogic | Full platform | Custom forms and gas modules | From ~£50/user | Yes — full field service | Partial | Commercial gas and maintenance firms |
Powered Now: The Only All-in-One With Built-In Gas Safe Certificates
Powered Now is the standout for gas engineers and it is not close. It is the only job management platform that generates official Gas Safe certificates natively — CP12 landlord gas safety records, domestic gas installation records, warning notices, commissioning checklists, and benchmark certificates. You complete them on your phone or tablet on site, capture the customer signature, and email the finished certificate before you leave.
The certificates are not just PDF forms you fill in. Powered Now validates entries, checks that required fields are complete, and formats the output to meet Gas Safe standards. Previous property and appliance data carries forward, so a repeat annual landlord check takes minutes instead of starting from scratch.
Beyond certificates, Powered Now is a full job management system. Quoting, scheduling, invoicing, payment tracking, customer records and Xero integration are all built in. The Professional plan at £32 per user per month adds automated quote and invoice chasing. The Premium plan at £40 adds advanced reporting and multi-branch support.
The offline capability deserves emphasis. Powered Now works fully offline and syncs when you reconnect. Gas engineers spend significant time in basements, plant rooms and properties with no mobile signal. Being able to complete a certificate underground and have it sync and send when you walk outside is not a luxury — it is a practical necessity that most competitors handle poorly or not at all.
CIS Domestic Reverse Charge VAT is handled natively, which matters if you do commercial gas work as a subcontractor. Making Tax Digital compliance is also built in.
The trade-off is that Powered Now's interface is functional rather than polished. The quoting workflow is not as slick as Tradify, and the scheduling view is not as sophisticated as Commusoft's dispatch board. But for a gas engineer who needs one app that does certificates and job management properly, the competition is thin. For a detailed comparison of Powered Now against other job management platforms, see our guide to Powered Now vs Tradify vs Joblogic.
Gas Checker: Lightweight, Free to Start, Certificate-Focused
Gas Checker takes the opposite approach to Powered Now. It does one thing — gas certificates — and it does it well. There is no quoting, no scheduling, no invoicing. You open the app, select the certificate type, fill in the details, and issue it. CP12 landlord gas safety records, domestic gas installation records, warning notices, unsafe situation reports, and appliance labels are all covered.
The free tier lets you get started without paying anything, which makes it the obvious choice for an engineer who wants to try going paperless before committing to a subscription. Paid tiers (from roughly £10 per month) unlock features like property record history, bulk certificate management, and enhanced PDF branding.
Gas Checker is particularly popular with sole trader gas engineers who already use a separate tool for invoicing — perhaps just Xero or FreeAgent directly — and do not want or need a full job management platform. It plugs the compliance gap without adding complexity.
The limitation is obvious: it is just certificates. If you want to send a quote, schedule a job, track parts, or invoice a customer, you need another tool. For many sole traders, that combination of Gas Checker plus a simple invoicing app is actually cheaper and simpler than a single integrated platform. For growing firms that want everything in one place, it becomes a bottleneck.
Certsure: Multi-Discipline Compliance
Certsure operates in the compliance certification space for both gas and electrical work in the UK. The platform is used by Gas Safe registered engineers and electricians who need to produce and manage compliance certificates across multiple disciplines.
For gas engineers who also carry out electrical work — or firms that employ both gas and electrical engineers — Certsure offers a single platform for all compliance paperwork. Gas safety records, electrical installation certificates (EIC), electrical installation condition reports (EICR), minor works certificates, and associated documentation can all be managed in one place.
Certsure's pricing is subscription-based and varies depending on the package and number of users. The platform integrates with Gas Safe for notification purposes and maintains a record of all certificates issued.
The limitation compared to Powered Now is that Certsure is a compliance and certification platform, not a job management system. You will still need separate software for quoting, scheduling and invoicing. Compared to Gas Checker, Certsure's strength is its multi-discipline coverage — if you only do gas work, Gas Checker may be simpler and cheaper.
Commusoft: Gas Compliance Inside a Full Field Service System
Commusoft is a London-based field service management platform used by plumbing, heating and gas firms across the UK. It does not generate official Gas Safe certificates natively, but it does let you build custom digital forms that capture all the data required for gas compliance records and attach them to job records.
For a firm that already uses Commusoft for job management, adding gas compliance forms means engineers capture certificate data within their normal job workflow rather than switching to a separate app. The data is stored against the property, the customer and the job, and can be searched and retrieved when needed.
Commusoft's strength for gas firms is the broader system around the compliance forms: scheduling and dispatch, automated customer communications (booking confirmations, on-the-way texts, appointment reminders), stock and parts management across vans, and detailed financial reporting. For a heating firm running ten engineers with an office coordinator, that operational depth justifies the price starting at around £99 per month.
The gap is that Commusoft's custom forms are exactly that — forms you build yourself. They do not validate against Gas Safe standards, they do not pre-populate from previous visits with the same intelligence as a dedicated tool, and they do not sync with Gas Safe for notification purposes. For a firm that needs proper Gas Safe certificate generation, you will still need a bolt-on like Gas Checker alongside Commusoft, or train your team to use the Gas Safe portal separately. For a fuller comparison including pricing tiers and other features, see our guide to Tradify vs Powered Now vs Commusoft.
Joblogic: Commercial Gas and Planned Maintenance
Joblogic is a UK-built field service management platform with a strong focus on commercial work and planned preventative maintenance (PPM). For gas firms that service commercial buildings — restaurants, offices, schools, care homes — Joblogic's strengths are directly relevant.
The platform includes gas-specific modules that allow engineers to record gas work within the job management workflow. Custom forms for gas safety checks, appliance commissioning and warning notices can be configured and attached to maintenance schedules. The PPM module is particularly strong: you can set up recurring gas safety checks across a portfolio of commercial properties, and the system automatically generates jobs, schedules engineers, and tracks compliance status.
Joblogic pricing starts at approximately £50 per user per month, though commercial pricing varies based on configuration and user count. The platform integrates with Xero and Sage for accounting, and the asset management module tracks appliance history, service records and warranty information against individual pieces of equipment — useful for commercial gas installations where you are maintaining dozens of appliances across multiple sites.
The limitation is complexity. Joblogic is built for managed service operations, not sole traders. The setup requires configuration, the interface assumes some technical comfort, and the pricing reflects the commercial market it serves. A domestic gas engineer doing annual landlord checks and boiler installs will find it overkill. A commercial gas maintenance firm managing contracts across hundreds of properties will find it essential.
Going Paperless: What the Transition Actually Looks Like
The phrase "going paperless" gets thrown around as though it is a single decision. In practice, for a gas engineer, it is a series of small changes that take a few weeks to bed in.
Week One: Pick Your Tool and Set It Up
Choose one of the tools above based on your situation. If you want everything in one app, start with Powered Now's 14-day free trial. If you just want to test digital certificates, download Gas Checker's free tier. Set up your Gas Safe registration number, your company details, and your standard appliance list.
Week Two: Run Paper and Digital in Parallel
For the first week of real jobs, complete both your paper certificate and the digital version. This is not about distrust — it is about catching any mistakes in your digital workflow before you rely on it. Check that the PDFs look correct, that emails arrive properly, and that records are stored where you expect them.
Week Three: Go Digital Only
Once you are confident the digital workflow is solid, drop the paper. Keep a small pad of blank certificates in the van for genuine emergencies — a dead phone, a broken tablet — but make digital your default. Most engineers find that within a fortnight they are faster on the app than they ever were on paper.
The time saving is real. Engineers who have made the switch consistently report saving 30 to 45 minutes per day on certificate paperwork alone. Over a five-day week, that is three to four hours you can fill with billable work or finish earlier. If you are interested in what the numbers look like when you automate invoicing alongside certificates, read from 9pm paperwork to paid in 3 days.
Which Gas Certificate Software Should You Choose?
The decision tree is simpler than it looks:
- Solo gas engineer who wants one app for everything — Powered Now from £28/user/month. It is the only option with built-in Gas Safe certificates and full job management.
- Solo gas engineer who just wants digital certificates — Gas Checker, free to start. Add a simple invoicing app like Xero or FreeAgent separately.
- Gas and electrical engineer — Certsure for multi-discipline compliance certificates, plus your choice of job management software.
- Growing domestic firm (3-10 engineers) — Powered Now if you want certificates built in. Commusoft if you need deeper operational features and can handle certificates separately.
- Commercial gas maintenance firm — Joblogic for PPM scheduling, asset tracking and commercial job management. Handle Gas Safe certificates through the platform's gas modules or a dedicated tool alongside.
If you are comparing broader job management platforms beyond the gas-specific angle, our guide to the best plumbing job management software in the UK covers five tools in detail with full pricing breakdowns.