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.
Boiler Choice Tool
Answer a few quick questions to see what type and size of boiler is likely to suit your home.
Does My Boiler Need Repairing?
Answer a few guided questions to understand whether your boiler issue is likely minor, needs attention soon, or likely requires repair.
Does My Boiler Need Replacing?
Use this guided check to see whether your boiler is likely fine, worth repairing, or may be due for replacement.
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.