HVAC (42)

Discussions Replies Latest Activity

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

Thermostat set points

I have a programmable thermostat that is, well, dumb. It is willing to set times and abide by those, but it doesn't take in to account the…

Started by daniel manriquez

5 May 17, 2014
Reply by Bob Blanchette

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

Underground ductwork

Do you think the air loss will be minimal in the following situation Underground duct with some separation at the joints, trenched and enc…

Started by Kevin

19 Oct 8, 2013
Reply by Bob Blanchette

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Latest Activity

tedkidd replied to Damien Greenfield's discussion Is there is cost saving for you in having a tankless water heater?
"Bob, here is where our perspectives diverge. I think people should switch to electric because they…"
11 hours ago
tedkidd replied to Damien Greenfield's discussion Is there is cost saving for you in having a tankless water heater?
"Here our thinking falls out of alignment. Going to electric is default for me. People can't…"
11 hours ago
Bob Blanchette replied to Damien Greenfield's discussion Is there is cost saving for you in having a tankless water heater?
"If you are going to stay with gas service, might as well keep the gas water heater. Switching gas…"
11 hours ago
tedkidd replied to Damien Greenfield's discussion Is there is cost saving for you in having a tankless water heater?
"8 people, sometimes under 10 therms. Just not enough energy used heating water to get obsessive…"
11 hours ago
Eric Kjelshus replied to Damien Greenfield's discussion Is there is cost saving for you in having a tankless water heater?
"Biggest is to keep the CO  or other gas down in building  "
12 hours ago
Bob Blanchette replied to Damien Greenfield's discussion Is there is cost saving for you in having a tankless water heater?
"Look at your SUMMER gas bill where water heating accounts for most of your gas use. 10-15 therms…"
12 hours ago
Bob Blanchette replied to Damien Greenfield's discussion Is there is cost saving for you in having a tankless water heater?
"The marathon fails miserably in operating costs when compared to an ordinary gas water heater.. NG…"
12 hours ago
Richard C. MacCrea replied to Damien Greenfield's discussion Is there is cost saving for you in having a tankless water heater?
"Most of the posts here are far too narrow in scope. To make the best decision you need to…"
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