Midcentury Modern Passive House

[@alfredodino825]

Would be useful to discuss humidity and temperature differences inside to outside. Especially how the home performs based upon actual figures in the hottest most humid parts of the year. Passiv House is fundamentally a cold climate system. How Passiv house standards can work for the hot humid parts of Australia is actually the most interesting element. Adding or retaining heat is scientifically easier to achieve than maintaining a healthy inside environment when the outside is so hot and humid and the inside is being warmed/humidified by everything in the house including the humans and pets. A video on this issue along with the numbers would be much appreciated.

[@theleanarchitect]

I disagree that Passive House is a cold climate system. Yes it was developed in Germany, but they can also have warm summers up to 30c. PH is a comfort, health and energy efficiency standard than can apply to all climates. The same envelope that keeps warmth in can also keep heat out, and be easier to keep cool. Adding coolness is easier and cheaper than adding warmth, because the sun is shining and generating cheap solar power precisely when you want to run the AC. The comfort in a PH is achieved by maintaining a temperature and humidity level within the comfort zone (18-25c / 40-60% Relative Humidity) We find that our Relative Humidity inside our home is consistently 50% because the HRV is actively removing surplus moisture rom bathrooms and kitchens. Humid climates adopt a slightly different airtight construction methodology (with the membrane on the outside - to keep humidity out) and utilise ERVs which are specifically designed to extract moisture from humid air.

[@monsterraceseries6976]

Great job explains all the features

[@cindyhollings2079]

Awesome!

[@theleanarchitect]

Thanks!

[@DarrenBlues89]

Very insightful and some great ideas to consider for a future dream home. Thank you

[@theleanarchitect]

Thanks!

[@joaosil]

Beautiful home! How do you deal with the kitchen hood so the envelope doesn't get penetrated? This subject would make a good video 😊. Cheers!

[@theleanarchitect]

Thankyou! The kitchen extraction fan and filter is recirculating and has no penetrations to the outside.

[@joaosil]

@@theleanarchitect Thank you for your reply! But is it effective? I've seen some comments online that have been holding me back, like people complaining about moisture from cooking starting dripping all over the induction cooktops and also from the recirculation exhaust (kind of like condensating). Is it something they are doing wrong in the setup (like a bad recirculating hood or not dimensioned right)? Could you describe what has been your experience with these equipments and filters? Sorry for all the questions 😅. Cheers!

[@theleanarchitect]

@@joaosil I don't know about these problems. None of our clients have any complaints. I guess that the projects you mention must be designed and executed poorly. Once you go Passive House you never look at other buildings the same.

[@D1R938]

Love the house, great design. It looks like you haven’t insulated the intake and exhaust ductwork from the HRV? How did this get through the certification process?

[@theleanarchitect]

Good pick up - when I filmed it I knew someone would speak up. There is a cabinetry panel hiding the upper part of the ductwork. These are insulated to PH standards.

[@SubashRao-e1r]

HI, How do you get polished concrete as floor? Do you apply a polish as a finish? What sort of polish?

[@theleanarchitect]

We specify a special mix of concrete that is then professionally sanded and sealed for a smooth hard wearing finish.

[@zawam]

Elegant design. The solar panels seem flat yet still achieves net zero? Do the filters collect much dust?

[@theleanarchitect]

The owner updated me to say that the house is entirely self sufficient with the battery. You would be surprised how much dirt and dust the filters collect from the outside air. It all helps to make the interior healthier.