I'm planning on getting a natural gas unit heater installed in my
garage, and I had a couple questions.
1) How much difference is there between brands? So far I have one quote
with a Lennox/Armstrong one, and another with a Reznor/Cayenne.
2) The two guys I've spoken with so far both thought that I'd be better
off venting it vertically even though the unit can be horizontally
vented. Both of them mentioned fewer corrosion problems that way. Does
this sound reasonable?
Gas heaters are simple devices and I bet most brands are OK. Go with
price, appearance, and warranty is what I say.
A vertical vent is most preferred since it is a more effective vent.
Horizontal runs are common since it eliminates the problems associated
with cutting holes in the roof. So, horizontal runs are kept to the
minimum just one run to exit the wall and then straight up from there.
Both solutions are acceptable practice.
I've had Modine unit heaters in commercial service since 1974 which are
still working just fine. Recently installed their 'Hot Dawg' unit
heater in my garage and it was a piece of cake. All the components are
top drawer quality, the fit and finish are first rate. The price was
also better than the six or so others I looked at. Do a Google search
for online pricing to see how much you can save.
Agree on the vertical vent. Metalbestos double wall is easy to work
with and has adapters that are perfect for the Modine. All the higher
efficiency unit heaters these days make a lot more commotion firing up
than the older units, so consider hanging your heater on resilient
mounts if that might be a problem. HTH
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