HVAC (62)

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Underperforming? Energy Efficiency of HVAC Equipment Suffers Due to Poor Installation

Hello all, A search of the site seems to indicate this recently published study from NIST has not made an appearance, so here's a link to…

Started by Steve Waclo

4 Dec 4, 2014
Reply by Robert Zockoff

Dirty Sock Syndrome in high efficiency HVAC units

I was recently told my new HE HVAC unit has the dreaded dirty sock syndrome.  Never had this problem with the old unit.  My research shows…

Started by Ti Mougne

12 Nov 17, 2014
Reply by Hal Skinner

HVAC - Cooling and Heating Load Reduction

Common load reduction strategies include:       Tightening your building covering and adding additional insulation to condense leakage.…

Started by Aaren Stewart

1 Sep 2, 2014
Reply by Hal Skinner

Think of the house as a really big duct

There is an article in the June 9 issue of ACHR News magazine that might help a lot people understand why the house is really part of the d…

Started by Frank Spevak

0 Jun 13, 2014

UV light in Furnace?

Had our furnace and air ducts cleaned today for the first time in years; could have spun an entire dog from all the embedded hair.  The ser…

Started by Home Energy Magazine

29 Mar 25, 2014
Reply by Brett Little

LBNL looking for HVAC contractors that service Small Commercial

Our team at Lawrence Berkeley National Laboratory has developed an Energy Management Package to target small commercial buildings that is d…

Started by Erin Hult

9 Feb 15, 2014
Reply by Curt Kinder

Low Gas Pressure

I have been running no heat calls all day - today I have found  lots of very low gas pressure you can run the Nat Gas hot water heater or 9…

Started by Eric Kjelshus

8 Jan 15, 2014
Reply by Tom DelConte

Troubleshooting a Furnace Blower

Looking for some help troubleshooting this furnace blower issue! Carrier Model 58CTX070 Furnace is not delivering much air to supply gril…

Started by Bachi Brunato

12 Jan 5, 2014
Reply by Bob Blanchette

Geothermal Indoor Air Quality

I'd like the experts here to weigh in on this.  I've been hearing a lot of claims about the better IAQ you get with geothermal systems.  In…

Started by Trish Holder

2 Dec 27, 2013
Reply by Eric Kjelshus

Student needs help for HVAC research project

Hi, I am a Building Science student, working on a residential HVAC research project. Specifically, I am comparing the following types of sy…

Started by Lena Burkett

7 Nov 22, 2013
Reply by prisco tammaro

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John 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
"The fan only runs when the furnace tells it to run. On cooling, the fan will only work when the air…"
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John 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
"The fan only runs when the furnace tells it to run. On cooling, the fan will only work when the air…"
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Dennis Heidner 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,  Luke below has also suggested the first thing that came to my mind.  An ERV/HRV…"
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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…"
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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
"Agreed! True, if an open plan. Simple is best. But away spaces seem to be making a come-back. And…"
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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, 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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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…"
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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
yesterday
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…"
yesterday
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…"
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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 am a whole house fan expert but not an HVAC expert. However, I have no idea why any HVAC…"
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