Radiant engineering in Bozeman MT designed the closed loop glycol system using Caleffi colectors and a crown 120 gal stainless water storage tank. The house is 1400 ft2. r 70 walls and roof. R 40 slab…"
May I recomend a solar thermal combi system. It heats the domestic hot water and uses the excess heat stored in that water to heat the home at night time. I have one system on a heavily insulated home (R 70 walls/ roof,…"
"I think that radiant barriors really work. I wonder what the real amount of energy that is reflected really is. If you look at a piece of foil faced foam with an infrared camera it lights up. I also know that the latest rage in…"
"American windows forget about solar heat gain. German windows have the solar gain and the good u values. I have been told you cannot do a Passivhaus with American windows because of this. It costs ten grand to ship them…"
I think your wall system will work really well. I'm thinking the treated 3/4" plywood strips will bend into the foam when screwed with the Timberloks. Maybe you could use 1x4's. How wide are your…"
What I like to do to afford a better wall is make the home smaller. So now there is money to do the wall much better. I draw plans so I have some control here. I also frame the home too. I could be a wise guy and…"
Well I do not live in a Florida like climate. I live in western Montana, but I'll give it a shot. We sometimes use what's called a cold roof here to vent the roof better, The idea is to prevent ice daming on the eves in…"
"Hi again Ed,
I have been all excited to measure ground temperature in the last couple a' days. My Caleffi idronics came in the mail, and it is on heat pumps. So I found my old notes, and on Dec. 31, 2010, I measured my…"
"Hey there, Ed.
I think the house is 1200 ft2 on the inside and since the wall wound up 22" thick, it is 1400 ft2 on the outside. Hamilton MT is around 7700 heat degreee days. The Ravalli Electric Co Op used to cost 5.3…"
"Hi Ed. Great point in allowing for expansion and contraction of concrete. I am always pouring against an ICF foam wall. This is easily forgotten about. You have reminded me of a detail that I thought of when desigining…"
"Interesting stuff. In one house that I constructed for a client, I had the sparky electrician install a motion sensor in the bathroom so when soneone came in to use the toilet, the motion sensor fired up a circulating pump to send hot…"
"Hi Bud. I was actually talking about a crawl space under a wood sub floor, quite typical here in western Montana. I was interested in insulating the I-joist floor system to cut down heat losses to the ground. I agree that the air…"
"Hi Bachi. I have had lots of practice doing crawl spaces. You could figure it using math. I just tried to get the homeowner and the general contractor of a home that I did the ICF crawl space walls for to insulate the…"
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Rebroadcast from On April 30, 2013 Sharon Miller and Robin Utz of the U.S. Department of Education conducted a one hour webinar for HVACR educators to provide them firsthand information from Washington.
* A blueprint to revise…