replying to glynndaddy, Denco AC - Carrier Dealer - 28 years experience-
Licensed in Texas wrote:
glynndaddy wrote:
Thanks to everyone for your help.
Is a thermostat, TSTAT and RM TH all the same thing?
If a properly running systems run for long periods of time, doesn't
that translate to high energy bills? What would be a reasonable ratio
of on to off time?
I didn't want to take much of anyone's time, but I guess I should
disclose that my system is not running right. It was installed in a
new house four years ago. I've had to have the system recharged 3
times, the last time a few weeks ago. The previous two times fixed the
short cycling, but not this time.
The AC company found a leak in my evaporator coil. I guess it needs to
be fixed, but it's going to be expensive. I was hoping that the
recharging would buy me some time, but i guess the leak has gotten too
big.
Lastly, when they found the problem, the guy did not reseal the
evaporator coil housing access panel. I just went up in the attic and
noticed there is some cold air coming out. I guess i will get up there
with duct tape, but I can't imagine it having that big an effect.
There is also air coming out of my drain pipe (because there is no cap
on it). I guess I will put some tape on that too.
Thanks everyone.
A refrigerant leak will have a huge impact on run time. The lower it gets,
the longer it will run. Adding more Freon will never solve the problem. A
a/c system is like a car tire in that it is air tight. If your car has a
low tire it is because it has a leak, adding air does nothing to repair
the tire or the leak. The same rule applies to a a/c system. If your unit
is 4 years old it should still be under warranty by the manufacturer and a
repair would cost you labor and refrigerant, The coil would be replaced by
the manufacturer. The leak will only get worse. And in time I running the
system low on refrigerant will/can destroy the compressor. As for run
time, the length a ac unit runs is determined by variables such as outdoor
temperature, heat gains through windows and doors and the amount of
insulation in your attic. These same variables determine the length of
tine the unit is off. I just a had a conversation with a customer who's
old system ran non stop, we installed a new system one ton larger and now
it runs 6-7 minutes and is off for 14-16 minutes. So the run time is 18
minutes per hour instead of running 20 hours a day like the old undersized
unit.
--
posted from
http://www.homeownershub.com/mainten...ns-128958-.htm
using HomeOwnersHub's Web, RSS and Social Media Interface
to home and garden related groups