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| hvacguy |
 Posted: Thu Dec 20, 2007 11:28 am Post subject: good manual J overview |
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Just wanted to share this site that is a nice overview of why to use manual J:
http://buildwrite.blogspot.com/2007/03/what-is-manual-j-load-and-why-do-i-need.html
Heres a piece of the blog article:
Oversizing can lead to:
Higher equipment cost
Excessive loading/unloading
Frequent cycling
High indoor relative humidity (leading to mold and mildew)
Large conditioned-space temperature swings
Low efficiency and high operating costs
Shorter equipment life
Poor indoor air quality
Advantages of proper sizing as opposed to over sizing are:
Lower initial equipment cost
Ease of obtaining proper airflow
Can lead to greater occupant comfort
Can lead to longer equipment life
Quieter equipment operation
Leads to greater operating efficiency
Lower operating costs
Can lead to lower maintenance cost |
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| regis101 |
| Posted: Sat Dec 22, 2007 7:11 pm Post subject: |
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Joined: 22 Dec 2007
Posts: 7
Location: Livermore, Ca
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| Good link. Wish I had this info two yrs ago. I ended up with a fiasco |
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