Recent Q&A

• Mini split commissioning and warranty conditions

  I like to compare USA and EU. Simply because I'm curious :) So I am interested how does commissioning of mini splits and warranty conditions work in USA. The situation…

• What is the point of Passivhaus certification?

  I see this come up often in cost analysis discussions, but I fail to see how certification can be anything other than a sunk cost. Unless I have a completely…

• Are solar panels today carbon footprint break-even during (and after) lifetime?

  I know this is ever changing, and big effort is being made to find new ways to produce PV panels from cheaper/more environmentally friendly materials, but if I were to…

• HRV供应和交货haust air temperatures

  Sorry if this has been done before, but I can't find it. There are numerous discussions on efficiency, and rentability, and such topics, but I have not seen anything with…

• Thermostats and weather compensation in a well insulated tight house

  Trying to figure out a heating strategy for the following house: - climate zone equivalent to 4A (continental Croatia, Europe) - 170m2 net, ground floor + 1st floor - ~35kwh/m2…

• Ductless minisplit placement for closed 1st floor ?

  I have read most of the articles I could of the ductless minisplits and thermal comfort. I am still going with underfloor heating and probably a gas boiler because, wife.…

• HRV/ERV Ventilation ducting embedded in floor EPS

  I have a proposed method to install flexible ventilation ducting embedded inside of EPS on the 1st floor (not ground floor, one above it, not sure what you call it…

• ERV odour?

  I've read of issues of some ERV units having a "plasticky" stink, as discussed on some austrian and german forums, which affects certain batches of enthalpy heat exchangers made by…

• Foamglas Perinsul alternative in Europe

  I'm trying to find a product which I would use to try and break the cold bridge between slab and wall. I am attaching a mockup on how it would…

• HRV/ERV space requirements for installation

  For a system like Zehnder Q350, how much space should be reserved for installation? My technical room will be on the first floor. I was planning to put it there.…