Length of condensate pipe

Question

How long can a condensate pipe be?

Harry · Answer

It can go as long as it needs to as long as I’ve got a fall

Cameron · Answer

Normally the max for an external run is 3m, the pipe should be 40mm and incorporate an air brake.

Qamil · Answer

The external pipe run should be kept as short as possible to a maximum of 3 metres, taking the most direct and “most vertical” route to the discharge point, with no horizontal sections in which condensate might collect.

Ian · Answer

Hi. It should be a maximum of 3 metres and take the most direct route to the drain

Sid · Answer

500 mm then converted to 1/4 waste pipe stop freezing 🥶

Gary · Answer

The recommended length  externally is 3m with a sufficient fall to stop freezing. - best results is alway to run internally to waste etc -

James · Answer

If outside then as short as possible. No max length internally

Andrew · Answer

Ideally as short as possible however if its insulated as long as you like.

Length of condensate pipe

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