hoar frost plugging exhaust pipe

[eeperson]

Hi,

Does there exist a product that can melt hoar frost from exhaust pipes? Yes, EXHAUST pipes.

Thanks.

[hvacrmedic]

An exhaust pipe for what?

[eeperson]

A high efficiency furnace.

[eeperson]

In case you want more detail, the pipe only freezes under extremes of temperature and has only done so, I believe, twice, in its several years of life. There might also have been one instance of a child shoving snow into it on purpose... It is very possible that the moronic fools who installed the unit did not do so properly, as I had already caught them on other issues. (one such issue was to actually not attach the exhaust pipe at all...)

This just feels like a simple problem to solve, though, that might not have to involve bringing back untrustworthy people.

[ControlsInMT]

oops

[koolkahuna]

In case you want more detail, the pipe only freezes under extremes of temperature and has only done so, I believe, twice, in its several years of life. There might also have been one instance of a child shoving snow into it on purpose... It is very possible that the moronic fools who installed the unit did not do so properly, as I had already caught them on other issues. (one such issue was to actually not attach the exhaust pipe at all...)

This just feels like a simple problem to solve, though, that might not have to involve bringing back untrustworthy people.

Have a recommended hvac professional check the whole system if you value your safety.

[t527ed]

did anyone install any kind of screening over exhaust to keep the bugs and critters out?

[eeperson]

No screening.

[eeperson]

OK I take it such a device does not exist. LOL

[jtrammel]

OK I take it such a device does not exist. LOL

This will do it http://m.acehardware.com/product/ind...ductId=1292305 you should have your furnace serviced for safety's sake.

[hvacrmedic]

A high efficiency furnace.

The pipe should be insulated if it runs through a space that will get below 32°. Consult the installation instructions for details.

[NCHeat]

OK I'll ask the question. What the H@!! is "hoar frost"?

[stay gold jonny]

OK I'll ask the question. What the H@!! is "hoar frost"?

It's the kind of frost that "gets around"! Lol

[jtrammel]

OK I'll ask the question. What the H@!! is "hoar frost"?

Frost that accumulates on a surface according to wiki. So basically your standard frost.

[pacnw]

there is something special about hoar frost, we had a front page newspaper story about it the other day.

To OP, I would think nothing would need to be done about this. No location posted, but in our area we have had 5 issues of frozen exhaust in the last 5 years that I can recall. most of these were due to something the homeowner did to cause exhaust to be blocked.