TomKat engineer toolkit

Which tool do you need?

Free calculators and on-site helpers for gas engineers.

Keep them handy

Watch our quick video showing how to add the tools to your phone.

Calculators

Most usedIGEM UP/1B CalculatorCalculate installation volume, purge volume and permitted pressure drop using IGEM/UP/1B Edition 4.Open tool

Gas Rate CalculatorConvert timed meter readings into an appliance gas rate quickly on site.Open tool Radiator Sizing AssistantEstimate radiator output requirements using room dimensions and property details.Open tool

On-site support

Tightness Test HelperWork through let-by and tightness testing with structured on-screen support.Open tool

Ventilation AssistantCalculate ventilation requirements for common domestic gas appliances.Open tool

Fault Finding AssistantFollow a practical diagnostic route when an appliance is not operating correctly.Open tool Service and CP12 ChecklistUse a clear sequence for appliance servicing and landlord gas-safety checks.Open tool

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Use these tools as practical support

Always apply your own competence, current industry standards, manufacturer instructions and site-specific information before carrying out work.