On 5 Oct 2007 13:00:28 -0400, firstname.lastname@example.org wrote:
One of the most telling bits of info is the "reasons for oversizing".
The most common reason is because the customer requested it. That
suggests to me that in the real world the Manual J and other "correct"
ways of sizing are too often giving undersized results and the
customers have learned from past experience that they need a bigger
unit then the "experts" tell them they need. Almost every place I've
lived in has had undersized cooling.
This is only because the customer is trying to get the system to do things
that its not designed for
Probably not.....a correctly sized system is designed to *MAINTAIN* the
average comfort levels at the design conditions....not bring the temp in a
100 degree home down to 70 degrees in 30 minutes. Its not gonna happen.
I have had CJT in my killfile for a long time.....He doesn't *want" to
understand about manufacture design limitations, or proper sizing.
He doesn't care about getting it done right, All he cares about is how cheap
can he get it done.
CJT... "correct" is defined by the proper science and calculations according
to the requirements by the IBC, IMC, NEC, ASHRAE, and State/local laws,
codes and regulations.You seem to think these don't apply to you. Maybe you
need to do some homework before trying to stir the pot here.
For the most part, *most* of the regulars in alt.hvac are certified master
techs, and contractors. Alt.hvac is *NOT* a place for home owners to come
while about paying $100 cause they were too ignorant to change their
filters. Thats what alt.home.repair is for.
We are not going to assume the liability of telling you how to fix your
jurassic furnace, sight unseen, and without knowing what your abilities and
You need to call a local, *COMPETENT*, licensed, insured, professionally
trained, HVAC technician to come diagnose and repair or replace your broken
air conditioner, heat pump, furnace, and/or boiler.
If you would be so kind, please quit cross posting this junk.
You then are obviously clueless.
Manual J works this way:
"Correct iinfo put in.......Correct info put out"
"Garbage in................Garbage out"
That is plain and simple.
It seems however that you have just been too cheap to either hire a
competent home inspector or a competent hvac company when you bought
all your homes.
Perhaps if you had done it the correct way you would have then had the
proper info to negotiate the purchase of all those homes so you could
live in a comfortable home.
Next time, try and Expert, not an "expert".
A manual J would provide the correct size unit, however, the reason the
correct sized unit does not cool to design is because of multiplicity of
other factors, that need correcting!
Click on the Anchor link: "Specifications VS Reality," = 95% failures of
an AC's Major Performance factors: Ductwork - Airflow - Proper Charge,
WISDOM PRINCIPLE DIRECTED EMPOWERMENT COMMUNICATIONS -
THE REAL POLITICAL ISSUES and WISDOM BASED PEOPLE EMPOWERMENT
Are you trying to show your fine ignorance?
Deal with competent techs from reputable outfits.
And educate yourself as well.
Quality of work is doing it first time right. Cheap techs, cheap
customers will never get quality. You can interchange words cheap and
ignorance. As a plain consumer, at least I know this much.
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