How to connect air con discharge to downpipe?

[falconed]

Hi All,

I am looking at connecting my A/C drain to my closest downpipe to avoid it discharging next to the house and potentially making its way down to the foundations.

What connection would be recommended where is calls for a 'sealed connection' below.

Would drilling through the downpipe and sealing the pipe with some silicon be sufficient or should a use some sort of saddle?

My downpipe is round for additional information.

Cheers!

[MitchellMc]

Welcome to the Bunnings Workshop community @falconed. It's great to have you join us, and many thanks for your question about connecting an air con drain hose.

I'd suggest using these part to create Figure 3a: Holman 20mm x 1m PVC Pressure Pipe, Holman 20mm PVC Plain Tee and a Holman 20mm 90° White PVC Elbow. Arrange them as I have shown in the rendering below. Your drain hose is placed within the 90-degree elbow at the end. The fittings can be glued together with PVC cement, which can also be used to glue the adaptor into a PVC downpipe. You'll need a 20mm spade bit to drill the hole in the downpipe.

Please let me know if you have any questions.

Mitchell
 

[Laurens]

What about if the connection has to be made below ground level to ensure drainage. Is there a clamp style fitting that is available (for the outside of the rainwater pipe) so the inserted pipe from the aircon is sealed to prevent roots from plants finding their way there?

[JacobZ]

Hi @Laurens,

Unfortunately, I am not aware of a product that would be suitable for attaching an air conditioning drainpipe below ground level.

You might have to speak with an air-conditioning technician for their assistance with that as they may be aware of a method that is suitable.

Sorry I couldn't be more help.

Jacob

[AlanM52]

Hi @falconed,

Can we have some low-down photos of the compressor so we can see how it's related to the type of downpipe connection.

Cheers