HVAC design, Manuals J, S, T, & D, Duct leakage, Air flow, ENERGY STAR new home requirements, and more. Since heating & cooling are such a big part of home energy use, understanding HVAC is critical.
Latest Activity: Nov 13
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 the cold northern states, that means 95 AFUE with an…Continue
Started by Barbara Smith. Last reply by Ryan Schmidt Nov 13.
Some of the things homeowners,…Continue
Started by Hal Skinner Sep 7.
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. I understand the premise of a zoned system and on the…Continue
Started by Jon LaMonte. Last reply by John Proctor Jul 5.
Hello to everyone again -- This is an update on a building I'm working on for a NG furnace. It's been about a month (a very busy month) since I last posted questions and I have been to the building…Continue
Started by Kari Sauder. Last reply by Bob Blanchette May 5.
I've been asked by the owner of a theatrical company about heat for her building. It is a single story, 36' x 57' building (almost 2,100 sf) with only a little bathroom partitioned off in one…Continue
Started by Kari Sauder. Last reply by Kari Sauder Apr 24.
I need some input on an HVAC balancing question --- I have a raised ranch home with a finished basement and an open stairwell connecting the two floors. It's an early '90's build originally equipped…Continue
Started by Kari Sauder. Last reply by Eric Kjelshus Nov 8, 2013.
Started by Judi Lyall. Last reply by Bob Blanchette Dec 29, 2012.