HVAC Discussions (33)

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Floor level return added to attic ductwork.

Hello everyone and Happy Holidays! Attic ductwork is ubiquitous in extant, single floor, single family housing and we are all too aware of…

Started by Steve WacloLatest Reply

Now for Something Different

Now that my wife and I are involved in BPI training and plan to conduct field test at our residence, the work scope for integrated HVAC has…

Started by John PorterfieldLatest Reply

Are Zoned Heating/Cooling Systems a Good or Bad Idea?

For starters, I live in Atlanta, Ga and I am not an HVAC pro so this is a serious question that I would like answered for one of my clients…

Started by Jon LaMonteLatest Reply

Discussions Replies Latest Activity

HVAC integration – the past, the present, and the future

HVAC integration – The past When the first air conditioning systems came in, they were simple mechanical “machines”, with very few electric…

Started by ofer ben -nathan

0 May 3

Efficient furnace with maximum temperature

Furnace with maximum temperature used for melting and semi heating purpose. By this we can achieve the strengthened steel.

Started by Thaara

0 Mar 30

Zehnder North America seeks qualified QA agents

       Hello Energy Pro’s. On behalf of Zehnder North America, I would like to put out a request for 3rd party QA/commissioning agents acro…

Started by Gary Baggett

0 Mar 4

Target superheat formula

You said take wet bulb at unit not in the house am i right or did i miss understand the formula

Started by Miguel Orduno

6 Feb 18, 2015
Reply by John Proctor

Now for Something Different

Now that my wife and I are involved in BPI training and plan to conduct field test at our residence, the work scope for integrated HVAC has…

Started by John Porterfield

2 Jan 12, 2015
Reply by John Porterfield

Floor level return added to attic ductwork.

Hello everyone and Happy Holidays! Attic ductwork is ubiquitous in extant, single floor, single family housing and we are all too aware of…

Started by Steve Waclo

1 Dec 14, 2014
Reply by Bob Blanchette

Furnace with ECM: How to Model

Suppose you have a forced-air natural gas furnace.  At the end of its life, you are considering replacing it with an ENERGY STAR model.  In…

Started by Barbara Smith

5 Nov 13, 2014
Reply by Ryan Schmidt

Exposed AC and ducts. How would you like to tackle this??

Some of the things homeowners, business owners and maintenance staff will do to help a struggling AC system is unbelieveable.  I am using T…

Started by Hal Skinner

0 Sep 7, 2014

ENERGY STAR Furnaces & Failure of DOE Standard

Any speculation on why DOE was not able to make its new minimum federal standard for furnaces stick? http://aceee.org/blog/2013/01/why-does

Started by Barbara Smith

7 Aug 15, 2014
Reply by Bob Blanchette

Conditioned air in the attic? Not us.

i have read in this group where someone suggested conditioned air in the attic.  This being done to make the cooling and heating equipment…

Started by Hal Skinner

0 Aug 14, 2014

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