Free Plumbing & Heating Tools
These free plumbing and heating tools are designed to give you a clearer picture of how your home’s systems are performing – before you speak to an engineer. They’re built using real-world assumptions and focus on practical improvements, not unnecessary upgrades.
These tools can help you:
- Understand running costs, system performance, and capacity
- Identify realistic improvements to comfort, efficiency, and reliability
- Spot common issues before they become expensive problems
- Have a more informed conversation when you do request a quote
*Built by our own Gas Safe registered engineers. Tools provide guidance only – final recommendations always follow an on-site assessment.
Boiler & Heating Cost Calculator
Find out what your boiler and heating system is actually costing you before you spend a penny on changes.
What Size Boiler and Type Calculator
Quickly find the right boiler size for your home – and when a designed system makes more sense.
BTU Calculator
Calculate the heat output your room requires so you can size radiators and heating correctly the first time.
Radiator Size & Output Calculator
Check whether a radiator is powerful enough for your room before installing or upgrading.
