A
amdx
Guest
On 6/4/2019 9:12 PM, krw@notreal.com wrote:
I like that idea, I'll look into fan speed and see if it is adjustable.
I suspect it is, I had a warranty replacement of my fan motor and
noted it had a lot of wires!
Mikek
On Tue, 4 Jun 2019 13:32:50 -0500, amdx <nojunk@knology.net> wrote:
On 6/4/2019 11:45 AM, Jeff Liebermann wrote:
On Mon, 03 Jun 2019 08:19:25 -0700, John Larkin
jjlarkin@highlandtechnology.com> wrote:
Our cabin came with a smart thermostat that guests were always leaving
in weird states. I replaced it with a simple one that has a dial to
set temperature, and one switch for the fan, ON-AUTO. It had another
switch OFF-HEAT-AC but I removed that one, so the heat is always on
and can't be set below 40F.
I sometimes wonder why HVAC thermostats measure air temperature in one
part of the room, instead of using multiple sensors to measure the
average temperature of the room. Or, maybe PIR sensors that can be
aimed at the areas that are occupied. Or adding ceiling and floor
temperature sensors to deal with temperature stratification. For
large rooms, it could also shut down the vents in unoccupied areas
while continuing to blow hot or cold air in occupied areas. An HVAC
system that does a better job of calculating and measuring
temperatures would seem to be a better proposition than a $250
electronic thermostat that doesn't do much better at measuring the
temperature than an old bi-metallic mechanical thermostat. Recording
usage history and pattern matching seems like a poor substitute for
more and better sensors.
I'd like a system that does a better job with lowering humidity.
We installed a new system about 6 to 9 years ago, it did a better job
than our old system, but I feel much more comfortable if I run a
dehumidifier getting the humidity below 40%. I did that for a while,
and I could raise the thermostat 4* and still feel comfortable.
The problem was the dehumidifier created heat and that raised the temp
wherever it sat, so I stopped, and the Kennmore dehumidifier was
recalled because of a fire hazard.
With the appropriate thermostat, the new heat pump we put in this
Winter will dehumidify as well as cool. Basically, it just lowers the
fan RPM to make the coils colder, dropping more water out of the air.
A thermostat with a humidity sensor (and a couple of more wires to the
control board) is need to use the function.
I like that idea, I'll look into fan speed and see if it is adjustable.
I suspect it is, I had a warranty replacement of my fan motor and
noted it had a lot of wires!
Mikek
The kids have left so we have both of their bedrooms vents shut and
doors closed.
I was told this was a bad practice because it unbalances the system
and increases the back pressure. I was doing it more to move air to
the family room. The builder screwed up the HVAC big time.
I need a dehumidifier that vents the heat and condensation to the outside.
Which is the idea of the HVAC mode above.