On Nov 21, 6:29*pm, Big_Jake wrote:
On Nov 20, 11:12*am, wrote:



I am going to be heating my attached garage (3 car, about 23'x28' w/
10' ceiling). I was looking at a Hot Dawg garage heater at first, then
I realized the mounting location would be on a wall that is directly
opposite to the living room and thought the fan noise may be a
problem. I have also considered a 45,000 BTU 80% horizontal mount
Goodman, but I was told that the burners are fairly loud. I have now
been thinking about a 93% efficient Goodman model GCH90453BX. I
believe it would be quieter, but I have been told condensate may
freeze if the heater is not used in freezing weather. Doesn't all the
condensate drain from the furnace, or is some left when it's shut
down? I usually leave the furnace set to 45 or so in the winter, but
if I did shut it down would I have a problem? I like to keep the
garage warm for my diesel truck and on occasion I watch my mom's dog,
and she stays in the garage, in that case or when I am working in the
garage, I heat to 65 or so (BTW, I am in the midwest with cold
winters). Another advantage to the high eff. furnace is that I would
have to have a long run of 25' or so type b vent with an 80% furnace,
the cost between the 80% and 93% isn't too much, probably about the
same as the cost of the vent pipe. With the 93%, I would obviously be
using PVC vent pipe that would be cheaper and easier to install. I
also wanted to use a regular furnace so I have the option to add AC in
the future, I have no place to put a window unit. Any thoughts on the
condensate issue? I do have an easy route to run the drain to the
basement through the garage wall. Thanks for any advise!

Why would you have to run that much b vent? *You should be able to run
it out the wall or roof pretty close to the unit.

I would be concerned about your ability to keep the condensate trap
from freezing, so I would pick the 80% furnace as the cheaper (and
easier) option. *Depending on where you buy it, the furnace itself
should be cheaper than the Hot Dawg. *Plus you could run some spiral
duct (or whatever) off the furnace to distribute the air better.

JK

I have to run that much vent pipe because I have no wall to exit
through and as I said, I have to run the pipe to a suitable exit
location. I think I would save enough money on vent pipe to pay the
difference in the 93% furnace. I'm not too worried about freezing as I
will keep the garage heated to above freezing. If installed properly,
wouldn't all the condensate drain? That's what I'm curious about, I'm
not to sure how these are built and how the condensate drains. Thanks
again.
Steve