I posted a video on ERV's and one of our subscribers started asking lots of questions about the design. I was able to answer most of them, however he wanted validation on several products that his HVAC provider was recommending. I gave him some gen
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Hi community, look what the birds have done to my split AC. They pooped, built nest on top, and completely ruined the machine. It has stopped working. All freezed. I don't think it's worth spending extra money on repairing. Seeing the condition, do
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I am looking for some feedback: I am working on a 3850 sq ft house in So. Cal., Castaic to be exact. It will be well insulated and air sealed (blown in blanket [fiberglass] in 2x8 with an R-4 continuous on the exterior. It has a 44' long x 22'
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ROCIS has updated our guidance document “Ducted Range Hoods: Recommendations for New and Existing Homes” and we are seeking your valued input to help us with our outreach efforts. These efforts are targeted to contractors, industry profess
Read more…I visited a house a couple of days ago that was full of HVAC issues. About 4000 square foot house with multiple systems including two poorly installed ERVs. Summer house, so it is infrequently used. When I opened the covers on each ERV an oily sub
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I am wondering what best practice is for insulating chilled and cold water pipes inside a dwelling regards to protecting from condensation.
I will have both domestic cold and chilled space conditioning PEX circuits throughout the home.
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First many thanks, especially to David, for your help in determining the needed BTU's to heat air. It was a very good discussion for me which forced me to defend (I believe successfully) to heat my domestic water with a Hybrid Heat Pum
Read more…Good Day folks, this is my first posting to HEPF although I used to regularly participated in the LinkedIN group. I am approaching year 6 on my build of a single family home. Been quite the journey.
Anyway, I need some advise regarding the best app
Read more…Are there studies or have you had experiences where heat pumps have failed to cool on high heat days? We've known that cold climate heat pumps are needed in areas with colder climates (like Denver) however news of failure rates tied to high heat days
Read more…My 40 foot sailboat is only about 100 ft2 of floor space, the surface area is more that of a mobile home - long and narrow, the hull and deck are about an R-5, the glass is all single pane, and there are skylights and hatches that let in ALL of the s
Read more…I am working my way through ACCA's latest manual LLH (Low Load Homes). The postulate of continuous fan increases indoor humidity in the cooling season arises in Section 8. This principle has been shouted from the roof tops of many building science ve
Read more…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 after a major renovation made necessary by water damage (ironic, I know) from a busted fire sprinkler pipe, he
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