Blowing out Condensate lines for home HVAC system; what size compressor?

by Greg McKinney
(Groveport, OH)

The 90% plus HVAC systems create condensate even during the winter months. The problem is that in a slab type house; the condensate drain needs to be pumped up into the attic and connected to the wet-stack for getting rid of the water; but during winter months the attic is cold enough that the water left in the condensate lines once the pump turns off freezes.


So, the condensate line is a 3/8in clear flexible hose basically, and would run UP for 8ft; then horizontal for about 20ft.

What size of air compressor would you recommend for this?
I would automate it so that when the pump turns off; I would switch a valve to the air compressor line and purge the lines of water and switch back when fully purged.

Not sure with going UP for 8ft will be making the air compressor size so huge that this is not a feasible fix.

I would like to also keep this without a tank and running off of 120vac single phase.

Thanks for your input,
Greg

Comments for Blowing out Condensate lines for home HVAC system; what size compressor?

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Jan 08, 2017
Condensate lines
by: Doug in s.d.ca

Can't you just arrange the lines such that gravity would keep it/them open?

(I live in SoCal, so I'm probably missing something.)

Jan 07, 2017
Blowing out lines
by: Bill

Hope this will help: http://www.about-air-compressors.com/compressed-air-sprinklers.html

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