Aprilaire makes two types AFAIK. The ones I have always used sit in the hot
air plenum immediately near the A/C evaporator coil. The other style, called
a "bypass" unit sits on the return duct with a connecting pipe to the hot
air side.

Smarty

"Art Todesco" wrote in message
t...
wrote:
On Feb 8, 10:46 am, "brechmos" wrote:
On Feb 8, 10:37 am, "Smarty" wrote:

My humidifier blows directly onto the A/C coil and works just fine. My
prior
furnace/humidifier was set up the same way and also worked fine for 20+
years. I live in a very cold climate in the Northeast U.S.
Great. I'll see if I can hook it up tonight.

Thanks.

It's the AC evaporator, not the condenser that you are looking at.
The main thing to look out for is not to damage the evaporator while
you're cutting the necessary hole for the humidifier. IMO, by far
the best humidifiers are the Aprilaire. And I like the self powered
models, (760) that don't shunt air from the hot air plenum back to the
return. I've had the 760 for 7 years now. It's very easy to service,
the whole thing just lifts off. All I do is clean it once a year and
replace the media once every 2 years.

Warning, some humidifiers are designed only to mount on the hot air
plenum. I have an Aprilaire mounted on the side of the AC A coil.
There is plenty of room and has never caused any problems. I don't
know about new Aprilaire units, but the old ones were supposed to be
on the hot air plenum.