Scott Barhight
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  • United States Minor Outlying Islands
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Proper Sizing of a two Stage Geothermal System

Started this discussion. Last reply by dale conner Dec 20, 2010. 2 Replies

Question from energy homeowner: Contractor has recommended installing a two stage Water Furnace Envision w/desup NDV049A system into a 2700 square foot cape cod, 1000 square feet basement, 1000…Continue

 

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dale conner replied to Scott Barhight's discussion Proper Sizing of a two Stage Geothermal System
"If the contractor doesn't calculate a manual J,D, and S worksheet for the house then he's merely guessing. Also, galvanized ducting last much longer, is easier to clean, and is more rigid that fiberboard."
Dec 20, 2010
Steve Shannon replied to Scott Barhight's discussion Proper Sizing of a two Stage Geothermal System
"Hi my name is Steve. If the manual J suggested a 3 ton I would look at a 3 ton two-stage. The two stage units are usually a 1/2 ton larger in size. When I size my units, I try to shoot for a balance point of 5 to 10 degrees outside temperatures…"
Dec 16, 2010
Scott Barhight posted a discussion

Proper Sizing of a two Stage Geothermal System

Question from energy homeowner: Contractor has recommended installing a two stage Water Furnace Envision w/desup NDV049A system into a 2700 square foot cape cod, 1000 square feet basement, 1000 square feet first floor, and a 700 square foot second floor.  The house is all brick and was built in 1950, walls and attics are currently insulated using r 11.  The blower door test gave a  2800 cfm reading at 50. Contractor is recommending a 4 ton geothermal system, According to his comments it is a…See More
Dec 16, 2010
Scott Barhight is now a member of Home Energy Pros
Dec 16, 2010

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Company
Barhight Energy Eduspect
Professional Certification
none
Professional Interests
Energy auditor, home insulation and air sealing

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At 11:58am on December 16, 2010, Diane Chojnowski said…

Hi Scott,

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!

Don't forget to add your location on our Member Map!

Thanks!
Diane, HEP Moderator

 
 
 

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