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ChadRoetman
High efficiency furnace -- cleaning the vent pipes
ChadRoetman

What is the proper procedure for cleaning the two PVC vent pipes that run from my furnace to the outside? We have a bumblebees that have created a hive (and more gross stuff) inside the pipes.

dj1
Re: High efficiency furnace -- cleaning the vent pipes
dj1

You uninvited guests are there probably because there was no cap on the pipe outside the roof.

A brush on a long reaching stick can clean the mess, but to stop the mess from falling into the unit, disconnect the pipe from the unit and seal the opening.

If the pipe is not straight all the way up to the roof, see if you can remove it, take it outside the building and pressure wash it.

kevinm
Re: High efficiency furnace -- cleaning the vent pipes
kevinm

I had the same problem in one of two vents on my furnace. It happened during the summer when the furnace was off. Instead of cleaning the pipe, the HVAC serviceman replaced it at a not so cheap cost. This was after he sprayed into it with bee killer (stunk bad when the pipe was being removed). I ended buying a couple PVC vent screens (model# pvs-is2 for insects) and no more problems with bees.

If there is a safe way to clean out a PVC pipe with a lot of bees in it, I'd like to know how it's done just for the sake of knowing.

function
Re: High efficiency furnace -- cleaning the vent pipes
function
kevinm wrote:

If there is a safe way to clean out a PVC pipe with a lot of bees in it, I'd like to know how it's done just for the sake of knowing.

Plug up one end, shop vac on the other, and a little prayer might do the trick.

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