Free — no sign-up, no card
Free tools for UK gas & heating engineers
Built on the same rules engines that run inside PipeworkHQ, and free to use in the browser. Every tool carries the same honest caveat: indicative guidance for competent persons — never a substitute for the engineer’s own assessment or the official standard.
- IGEM/UP/1B Ed 3 & 4
Gas tightness checker
Permissible drop, no-perceptible-movement and purge volume under both editions — with the 1 October 2026 Edition 4 cutover handled correctly.
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- All four UK nations
CO alarm requirements checker
Installer (building regs) and landlord (tenancy) duties side by side, with each nation's exclusions encoded precisely — including the Wales gas-cooker difference.
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- BS EN 12831 basis
Whole-dwelling heat-loss estimator
An indicative whole-house design heat loss with fabric, ventilation and bridging broken out — a sense-check before the room-by-room survey.
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- Your figures, editable
Software savings calculator
Add up what you pay for job management, certificates, website and marketing tools, and compare it with one flat PipeworkHQ plan — honest answer either way.
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These are the free taster. Inside PipeworkHQ there’s more.
Signed-in engineers also get a room-by-room heat-loss surveyor and a full set of server-checked calculators — gas rate and heat input, BS 6891 gas pipe sizing, combustion-air ventilation, expansion-vessel and DHW-cylinder sizing, chemical dosing, and imperial↔metric conversion — alongside Gas Safe certificates, MTD-ready invoicing and your own storefront. The free toolkit on this page starts at £0, no sign-up.