HVAC (68)

Discussions Replies Latest Activity

REALLY????

I am working my way through ACCA's latest manual LLH (Low Load Homes). The postulate of continuous fan increases indoor humidity in the coo…

Started by Danny Gough

12 on Saturday
Reply by Danny Gough

high rise humidity

I have a friend/client with dry conditions in his condo. He's on the top floor of a 17-story building.  He's always had dry conditions, but…

Started by Steve Nations

7 Apr 3
Reply by Dennis Heidner

Do ductless systems do better on the HERS?

Hi, all  There has been renewed interest in this conversation  http://homeenergypros.org/hpforum-archive#/discussion/4182/how-does-rem-rat

Started by Brett Little

11 Nov 19, 2018
Reply by Rob Salcido

Bath fan weirdness

I recently measured disappointing bath fan flows at a project - both being below our program minimum of 50cfm. The builder had the installe…

Started by Mark Furst

13 Oct 11, 2018
Reply by Bruce Fillmore

Mini split installation location

Reaching out to the experts today to ask about location of installation of a mini split.  I'm a realtor, not an HVAC contractor.   I'm work…

Started by Jan Green

14 Sep 27, 2018
Reply by Jan Green

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

2 Sep 21, 2018
Reply by John White

What's the Most Profitable HVAC Job for Your Company?

Simple Question - In your experience, What has been the most profitable HVAC job for your company? If you're not sure, feel free to state y…

Started by Wayne Melancon

4 Sep 18, 2018
Reply by Franco Oyuela

Tankless water heating and existing gas lines

If a tankless water heater is installed in an older home with existing gas lines that serve the furnace and stove, how do you determine if…

Started by Julie Saporito

5 Sep 14, 2018
Reply by Kent Browning

Let's solve this HVAC quiz!!!

Answer these three simple problems of your HVAC systems, let's see how much you know your system and its reasons of such problems. Problem…

Started by Aaren Stewart

7 Sep 6, 2018
Reply by John White

DIY Filter Solution for an Evaporative Cooler, anyone?

If your general "info@" e-mail inbox is like mine, it is 95% SPAM but once in a while, as long as you catch it, there is an informed, well-…

Started by Leslie Jackson

8 Sep 5, 2018
Reply by Leslie Jackson

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Forum Discussions

How to Insulate Exposed Outdoor Ductwork?? Help

Started by Daniel Baur-McGuire in General Forum. Last reply by Franco Oyuela 12 hours ago. 8 Replies

REALLY????

Started by Danny Gough in HVAC. Last reply by Danny Gough on Saturday. 12 Replies

Where to spend my marketing dollars?

Started by Trip Smith in Marketing. Last reply by Building Performance Institute May 14. 10 Replies

Easy Tests for HVAC during audit

Started by Craig Bird in Weatherization. Last reply by John White May 9. 19 Replies

Water heater ventilation question

Started by Luis Hernandez in General Forum. Last reply by Dennis Heidner May 8. 23 Replies

Polar vortex photos of ice forming INSIDE homes!

Started by Diane Chojnowski in General Forum. Last reply by Michael Cuomo May 4. 1 Reply

LEED for Homes Green Rater Training

Started by Ryan Moore in Training. Last reply by Michael Cuomo May 3. 1 Reply

Latest Activity

Matt Worthy posted a blog post
1 hour ago
Dennis Heidner replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"I believe one of the issues is how does one defend themselves against an HVAC contractor that…"
7 hours ago
Gabriel Perez replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"I’ll give you an a for effort but even in the best cases bubble wrap ( unless it comes with a…"
7 hours ago
Paul Herron replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"I think Ed and his video hit on an important point -- these radiant barriers are primarily…"
8 hours ago
Brett Little posted an event

From Control Layers to High-Performance Enclosures - Free CE Webinar at Webinar Online

May 29, 2019 from 12pm to 1:15pm
High-performance enclosure systems are fundamental to efficient, durable, healthy, sustainable, and…See More
10 hours ago
John S. Rodenhizer replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"Agreed, But this guy fought me all the way. I have completed the rating and the HVAC contractor…"
11 hours ago
Dennis Heidner replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"Links for Build America and Building Science…"
11 hours ago
Dennis Heidner replied to John S. Rodenhizer's discussion Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
"Correct,   but when testing has been done on sealing ducts with wraps... (See the BTO and…"
12 hours ago

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