Depending on the type of heating and hot water system if there is water coming from the overflow there could be a few things wrong. All are easy to diagnose and range from a few pounds to a few hundred pounds. Follow the easy steps and we’ll find the problem together.
1. Look where the overflowing pipe comes out of your house. Is it from the eaves of the roof, near a bathroom / toilet or near a boiler/hot water cylinder.
2.Look at the type of pipe the water is coming from what is the material is it made from. The choices tend to be metal or plastic.
Plastic pipe from eaves – constant flow
The water level in a tank is too high so it is running out the overflow.
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Plastic pipe from eaves – only when heating is on
Water level in central heating feed tank is too high when cold.
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Plastic pipe from eaves – if water hasn’t been used for a while
Ball valve has a slight leak that isn’t noticeable when water is being drawn off regularly.
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Plastic pipe from near bathroom/toilet
Water level in toilet cistern is too high.
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Plastic pipe near a boiler
Could be the condensate pipe from a modern condensing boiler leaking. Click here for more information
Metal pipe near a boiler or hot water tank leaking
This is one of the safety valves opening on the central heating system/unvented cylinder. The valve opens to release excess pressure from the system.