HVAC Discussions (36)

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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

REMRATE Modeling of 2 stage Heat Pumps - Including GSHP

I have a REMRATE /Modeling Question. How are people determining percentage of load when modeling two stage heat-pumps (especially GSHP) whe…

Started by Jeremy Begley

1 May 16
Reply by David Butler

Manual S for Water Furnace Equipment

Does anyone have experience doing ACCA Manual S for Water Furnace equipment? As far as I can tell they do not provide enough data to proper…

Started by Jeremy Begley

6 Mar 23
Reply by Danny Gough

joining ducts

A question came up on exhaust duct connections. I have always considered screws necessary for mechanical fastening of one duct to another.…

Started by Don Fugler

21 Nov 28, 2017
Reply by Dara Bowser

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 Igor Mitbarg

1 Apr 11, 2017
Reply by Lucifer Prescott

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, 2016

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, 2016

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

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Discussion Forum

Manual S for Water Furnace Equipment

Started by Jeremy Begley. Last reply by Danny Gough Mar 23. 6 Replies

joining ducts

Started by Don Fugler. Last reply by Dara Bowser Nov 28, 2017. 21 Replies

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

Started by Igor Mitbarg. Last reply by Lucifer Prescott Apr 11, 2017. 1 Reply

Latest Activity

Sean Lintow Sr replied to John Carton's discussion Insulation touches underside of roof in home with no soffit or soffit venting.
"Location, location, location In hot dry climates - not really an issue unless it gets damp (and yes…"
2 hours ago
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3 hours ago
Bradford E. White replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"Agreed! True, if an open plan. Simple is best. But away spaces seem to be making a come-back. And…"
5 hours ago
Kurt Shafer replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"Jerry, as an energy consultant I imagine you are well versed in solar systems. Have you seen how…"
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Scott Mills replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"I have found that ceiling fans are the simplest way to control room stratification "
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Matt Peiris replied to H.O. Electric's discussion Stop Drinking Bottled Water! in the group News & Announcements
"Well water consumers need to test their water every year. Elevated arsenic, nitrate levels or…"
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Kurt Shafer replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"Jerry I don't have videos posted yet but I have some nice pictures from customers. See them…"
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Scott Mills is now a member of Home Energy Pros Forum
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Bradford E. White replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"Qualified "It Depends" kind of answer. 1. Temperature Perception: There is an intangible…"
7 hours ago
John Carton posted a discussion

Insulation touches underside of roof in home with no soffit or soffit venting.

I performed an assessment for a recent home buyer and the home inspector they hired when they…See More
8 hours ago
Jerry Needham replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"Kurt Thanks for the information on the whole house fan and the advise about leaving the fan on all…"
8 hours ago
James White replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"There is more than fan energy to be saved by setting fans to run on "auto". Most forced…"
8 hours ago
Kurt Shafer replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"Jerry, I am a whole house fan expert but not an HVAC expert. However, I have no idea why any HVAC…"
8 hours ago
Jerry Needham replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"Ken This is a great response.  Lots of arguments against leaving the fan on. THANKS"
8 hours ago
Luke Langhals replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"If an E/HRV system is installed in unison with the furnace ducting -- you might consider making the…"
8 hours ago
Ken Summers replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"At Comfort Institute we get asked this question all the time.  The argument for leaving the…"
8 hours ago
Allison A. Bailes III replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"Jerry, as Chris Heenan said below, running the fan continuously will raise the indoor humidity in…"
8 hours ago
Chris Heenan replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"In regions with _high_ humidity, running the fan continuously will be put moisture that the…"
8 hours ago
Barbara Smith replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"Eliminating continuous furnace fan operation is #3 on list of top ways to cut energy use, in this…"
8 hours ago
tedkidd replied to Jerry Needham's discussion HVAC Question about running fan continuously Vs. setting on Auto so it runs when AC or Furnace runs
"There is no Pat answer. It depends. In a well performing home with proplerly sized equipment and…"
8 hours ago

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