Last Summer Air Conditioning unit was installed, this winter when furnace comes on, I see condensation (water dripping, drop by drop ) from below combustion air blower.

We notice that the heat intensity (hotness in air) from the air duct vents coming in the rooms has decreased, not as it used to be what it was before the AC unit was installed.

Can anyone please help me guide as to what is wrong. So condensation issue can be rectified.

Thanks
Biz

On Saturday, October 26, 2013 1:51:23 PM UTC-4, wrote:
Last Summer Air Conditioning unit was installed, this winter when furnace comes on, I see condensation (water dripping, drop by drop ) from below combustion air blower.



We notice that the heat intensity (hotness in air) from the air duct vents coming in the rooms has decreased, not as it used to be what it was before the AC unit was installed.



Can anyone please help me guide as to what is wrong. So condensation issue can be rectified.



Thanks

Biz

The only place condensation can be coming from with a
furnace is if it's a condensing furnace and it's coming
from the flue gases condensing. That puts out a lot of
water and it sounds like there is a leak. Since it started
after the AC was added, it's possible they disturbed
something, didn't connect it properly etc. Usually the
drain for the AC condensate gets tied in with the drain
for the gas furnace condensate, so it's possible they
didn't connect something properly.

On 10/26/2013 1:20 PM, wrote:
....

The only place condensation can be coming from with a
furnace is if it's a condensing furnace and it's coming
from the flue gases condensing. That puts out a lot of
water and it sounds like there is a leak. Since it started
after the AC was added, it's possible they disturbed
something, didn't connect it properly etc. Usually the
drain for the AC condensate gets tied in with the drain
for the gas furnace condensate, so it's possible they
didn't connect something properly.

Or since it appears to be only the AC that was replaced, perhaps a leak.
This _could_ be dangerous if so; get a CO monitor and check the flues
while it's operating or better yet get the service folks out and check
it out thoroughly. If the AC guys managed to poke a hole in the wrong
place or it did just fail, a leak can be fatal...

--

On Saturday, October 26, 2013 2:57:25 PM UTC-4, dpb wrote:
On 10/26/2013 1:20 PM, wrote:

...



The only place condensation can be coming from with a

furnace is if it's a condensing furnace and it's coming

from the flue gases condensing. That puts out a lot of

water and it sounds like there is a leak. Since it started

after the AC was added, it's possible they disturbed

something, didn't connect it properly etc. Usually the

drain for the AC condensate gets tied in with the drain

for the gas furnace condensate, so it's possible they

didn't connect something properly.



Or since it appears to be only the AC that was replaced, perhaps a leak.

This _could_ be dangerous if so; get a CO monitor and check the flues

while it's operating or better yet get the service folks out and check

it out thoroughly. If the AC guys managed to poke a hole in the wrong

place or it did just fail, a leak can be fatal...



--


Gas furnaces operate with positive pressure in the heat exchanger. A leak results in conditioned space air blowing out, not combustion exhaust being sucked it. They are all designed that way for safety reasons.