Ashton Crusher wrote:

On 5 Oct 2007 13:00:28 -0400, wrote:



I like the "front door rule" :-)

http://www.fsec.ucf.edu/en/publicati...9-95/index.htm

Nick



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.


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!
http://www.udarrell.com/proper_cfm_b...syste ms.html

Click on the Anchor link: "Specifications VS Reality," = 95% failures of
an AC's Major Performance factors: Ductwork - Airflow - Proper Charge,
Installation, etc.
- udarrell

--
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