Ok guys, I am buying a new gas hot air furnace from a local HVAC company
that has provided excellent service in the past. I have a choice between 90+
furnaces, both with dual stage burners. One has a single speed blower, the
other has variable speed. Is the difference worth $700?
Oh yeah I've got one and I can no longer watch tv, use the phone, take a
shower, go to the bathroom,use the computer or start my car because of
the magnetic field it creates. Keeps the house warm though..
Don't be such a dickwad.
There are motor-controllers (and light dimmers, and fluorescent
ballasts) that generate a lot of RF noise on the AC power lines. I
wouldn't be surprised if ECM motors did the same thing.
A variable speed [ECM] motor will save on electrical costs over a standard
PSC multi-speed motor. But as other's have said, the cost of replacment is
high. There is an increase in comfort with an ECM, less noise too. I get
the 10 year PARTS and LABOR warranty as Bubba said.
The ECM motor killer is bad ductwork and high static pressures. The
equipment I sell has "hybrid" X-13 motors in it. Almost as energy efficient
as the ECM with several of the other benefits wbut with out a lot of the
problems and expense.
The 2 stage equipment that I deal with has both blower and consenser fan
motors that are ECM. Its fun to watch "Billy-Joe-Jim-Bob" try to make an
ECM fan motor run by pushing in the contactor.. LOL
And you for sure know that the saving would be wiped out by the cost of the
first repair? What assurance do you have that the first repair will be a
replacement motor? And, what assurance do you have that, as time passes,
the cost for ECM replacements won't decrease? Like computers have? And
what assurance, do you have that the cost of electricity won't keep rising
offsetting any cost of repair?
As to if it's worth the extra money for slightly higher efficiency,
that might also depend upon where you live. Since you would have to
use it enough for it to be worth it, and you didn't state where you
live so I have no way of knowing what the temperatures are like where
you are or your personal preforances for heating and cooling.
Psssssst, Bubba [that's Burger King] not McDonald's.
And for the other, I don't know about you all, but if you bought a forced
air heater, with an ECM, I would have to say that you also bought air
conditioning. That being said, it is used year-round.
For HVAC Gay Guy, you are funny, but looks aren't everything. A variable
speed ECM uses an amount of wattage only that's necessary to get the job
done. A PSC motor on the other hand will draw what it's rated for [unless
the static if F.U.] Then it may draw to it's limit.
An ECM costs more because of the permanent magnets and the electronics. But
an ECM offers quiter operation, more comfort, and energy savings. If you
[and I'm speaking of the HVAC Gay Guy] can't afford the ECM models, fine,
don't buy one. Then in 10 years, you can replace the PSC motor.
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