A house that performs well and makes you smile, a house that performs poorly and makes you sad

Today we handed over the H residence in Suma Ward.
It took two years from our first meeting, but "I'm really glad we were able to build the house we wanted."
"I received the highest compliment. This client had been researching his own home for 10 years.
He provided direct guidance to the carpenters and achieved a C value of 0.35, the highest level of airtightness in the Kansai region at the time.
In addition, a heat exchange ventilation system and a central air conditioning system have been installed.
Despite this, the temperature difference between the top and bottom has remained within 1 degree for 10 years, maintaining a constant 21 degrees in winter.
The client is an extreme insulation enthusiast. He has no knowledge of books and materials on insulation available to the general public.
He had most of the magazines, which were carefully underlined and marked with sticky notes.
Even among professional architects, there is probably only one in 1000 who has greater knowledge of insulation than Mr. H.
It was really great to receive such a compliment from such a person.
There were a lot of difficult things, but I was really happy with the work of my supervisor, Imataki, and the director, Kitano.
I think they did a great job. It was a big thing for them to accomplish this project.
It will be a treasure.
In the afternoon, I visited the S residence in Okubo for the first time in a year.
http://www.facebook.com/media/set/?set=a.200851349974196.49532.178046555588009&type=3
When I was listening to the owner's story about this house, there were a few things I didn't understand.
"Even in the middle of winter, the room temperature has recorded 26 degrees Celsius without heating," he said.
This house was built before major improvements were made to insulation, so the insulation is about 1% lower than the next generation.
It's to a good extent.
Even though the design prioritizes the sun, based on past experience, the temperature is too high.
So I couldn't understand it. But today's visit made me understand the reason immediately.
I understand. The first floor of this house is half an inner garage, and the first floor area is
Although it is the smallest house we have ever built, it has a vast ocean to the south.
The south-facing window is 13m x XNUMXm, making it a huge XNUMX㎡ window.
The first floor has a small volume and the windows are large, so the space is
The amount of solar radiation received is abnormally large.
That may be nice, but it's certainly not a temperature that would cause annoyance.
I visited here around 4pm today, and the north wall of the living room was 23 degrees Celsius.
The floor in the sun was as hot as 30°C, but the room temperature was only about 23°C.
By the way, the outside temperature was 8°C.
The windows are large and there are no honeycomb blinds, so the temperature does not drop much at night.
It seems large, but the temperature that starts to fall is still high, so electricity starts to become cheaper at night.
If it's sunny by 11 o'clock, you can go without heating.
If you use underfloor heating, it will be warm all the time.... And solar power generation is subsidized at 4kW.
I received as much as I could and listed it at 120 million yen, so I can depreciate it over about 7 years. From the 8th year
I can make 16 yen a year. I can't stop laughing. Of course, I'm watching it.
I can't stop laughing though...
The next example is the opposite. A friend I hadn't seen in about 15 years came to the tour yesterday.
I recently reunited with him on Facebook. He built a house last year, but it was so cold that he had to renovate it.
I came all the way from Okayama to look for clues. Since it is in Okayama city, the outside temperature is
It's not much different from Akashi, but the room temperature in the living room in the morning was apparently 7℃!
Even in my parents' house, which was built by a housing manufacturer 20 years ago, the temperature still reaches 10 degrees Celsius.
Moreover, my friend had asked the contractor to make the house warm.
We hear about this kind of case all over the place.
If there was a system in place to ensure that products were labeled on an equal footing, people would be fooled by companies like this.
It's not that I'm worried about this, but in the current situation, it's inevitable that there will be no end to these clients.
No. After all, even the contractors themselves don't know the quality of the houses they are building.
Because they don't understand...
In such cases, if the display of heating load values were mandatory, buyers would be able to tell right away.
You can see through it.
He was also astonished at the huge difference in performance at the tour yesterday and said he would like to improve it even if it costs a little money.
So I intend to cooperate as much as I can.
However, I truly want to reduce the number of people like this!
It was with exactly this thought in mind that I worked so hard to develop the Building Fuel Efficiency Navigation System.
http://www.cpu-net.co.jp/product/tatemononenpinavi.html
I want to provide a common platform to not only the practitioners reading this blog, but also to those around them.
Spreading the word and evaluating the performance will help prevent victims like this one from becoming victims.
Thank you for your cooperation!