Recent Q&A

• Opinions on this New Refrigerant

  Daikin claims they created a new refrigerant that, when used in EVs, extend their range by 50%. Will the future of minisplits have COPs around 9.0? https://insideevs.com/news/519703/ev-aircon-refrigerant-boosts-range/

• Cleaning the core of an ERV

  How do I go about cleaning the core of my ERV? Mine looks pretty dirty within the cores themselves.

• What in the world?

  I have several Milgard windows that have failed and took on a splotchy, mirrored appearance. It is not condensation but rather looks like the low E coating failed.At the time…

• Heat pump water heater and recirculation pump

  I have searched in vain for a Q/A or blog post regarding a hw recirc system and a HPWH. I thought the conclusion was that the HPWH took a big…

• System for attaching rigid foam

  Matt Risinger was showing off some new products and this one looked especially useful:https://www.rodenhouse-inc.com/Matt gives a quick tour of the attachment methods here: https://youtu.be/zeiRE5rWRgA?t=664

• Air conditioning (off-topic)

  My 99 y.o. Granny-in-law lives on the top floor of a rent-subsidized retirement home. She can't have a window air conditioner hanging out the window and her portable air conditioner…

• Website Q: Sharing projects

  There used to be a function on the website to share saved GBA pages with outsiders. I can't find that function anymore. Is it gone?

• Warming a cold-soaked house

  If a house with a total weight of 150,000 lbs and 2,000 lbs of air needed to be warmed from 60° to 70°F, would it really take 1,520,000 Btus?If the…

• Acrylic primer + tape

  Is an acrylic primer/sealer like PPG Gripper plus an acrylic tape like 3M 8067 All-Weather a good combination for air-sealing OSB to OSB (seams) and OSB to concrete (sill plate)?Gripper…

• Controlling a minisplit

  While "set and forget" is the best use of a mini-split thermostat, we like the house 2 or 3 degrees cooler at night while sleeping. Is there a way to…