Confused about which size of radiator, water cylinder or expansion vessel to buy? Don't worry, navigate this website and use our online calculators below to work out the size of radiator, water cylinder or expansion vessel you need.

Once you know the required size, click on the links below to buy the products at fantastic prices.

Choose the right Calculator to help you with your plumbing needs


BTU Calculator

BTU stands for British Thermal Unit. It is approximately the amount of energy needed to heat one pound of water by one degree Fahrenheit. It is extremely important to know the exact BTU of the radiator you require to keep your house warm.


Water Cylinder Size Calculator

It is extremely important to calculate the accurate size requirement of a domestic water cylinder to ensure an adequate supply of hotwater to all the outlets at all times. To find out more about the exact size of cylinder to suit your needs and more about cylinder sizes, please click on the link below.

Calculate your water cylinder size requirements >>


Expansion Vessel Size Calculator

An expansion vessel is used to provide the correct pressure to your water system. It is a small tank used in closed heating systems. Expansion vessels are used wherever tanks are needed in water systems. It is very important to know the size of the expansion vessel your water system requires.

Calculate your Expansion Vessel size requirements >>