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[daniboun]

Forced air heating and cooling. Essentially “clim gainable” in the floor.

It's original) at my place I have a floor heat pump system (cooling / air conditioning / heating) but totally invisible under the tiles via an underground hydraulic system.

 

[EJ3]

Question for US people:

I've observed your living spaces in the USA, we often see this type of trapdoor in the floor, why is that?
In France we don't have this system...

View attachment 557040

I can be air-conditioning, heat or both.
At my parents, it's quit different: the heat is from baseboard heat (hot water pipes with fins and covers that direct the cooler air about 3-4 cm from the floor through the fins and curve the natural convection of heat rises outward away from the walls into the room. Thus, due to this slow convection (no fans) from along most of the baseboard area, the room, just feels naturally (consistent throughout the rooms [upstairs and down]) warm, with no blowing air. It is extremely efficient, using a natural gas (from the ground) powered boiler system that also supplies hot water to the house.
No holes in the floor or difficult to access ductwork running under the house (also not affected by any flooding of the property that occurs about once every 20-40 years).
The AC comes from vents similar to these floor vents, that are mounted in the ceiling or upper walls, blowing slowly across the ceilings (also where the air returns to the system are: up high, catching the naturally warmer air to cool it down) when it is actively cooling, again, using the natural convection of falling, cooler air going across the ceiling, mixing and falling into the rooms (for a no blowing on you, air in the rooms experience).
My Father was a Master Plumber, Heating and Air Conditioning General contractor with him and my mother owning their own family contracting business (mostly industrial [started by my father's father in 1927]).
They (my mother and father) designed and (with their friends) built this house in 1964. (I was 8 when we moved in in 1965. Prior to that, we lived in an above the 8 car garage apartment behind someone else's home.
From day one, my parents home has had a central vacuum cleaning system (you only carry a very light & its head), a central (hard wired) intercom system (including a speaker/monitor system in each bedroom, the kitchen and at the front door), and many other innovations, some of which I have never seen anywhere else. (anywhere else being in North America, Central America, England, Central Europe, Asia, Australia, Islands in the Indian Ocean, the Western Pacific Ocean and Oceana).
Yeah, I know, that excludes a lot of the world but it also includes a lot of the world.

 

[daniboun]

I can be air-conditioning, heat or both.
At my parents, it's quit different: the heat is from baseboard heat (hot water pipes with fins and covers that direct the cooler air about 3-4 cm from the floor through the fins and curve the natural convection of heat rises outward away from the walls into the room. Thus, due to this slow convection (no fans) from along most of the baseboard area, the room, just feels naturally (consistent throughout the rooms [upstairs and down]) warm, with no blowing air. It is extremely efficient, using a natural gas (from the ground) powered boiler system that also supplies hot water to the house.
No holes in the floor or difficult to access ductwork running under the house (also not affected by any flooding of the property that occurs about once every 20-40 years).
The AC comes from vents similar to these floor vents, that are mounted in the ceiling or upper walls, blowing slowly across the ceilings (also where the air returns to the system are: up high, catching the naturally warmer air to cool it down) when it is actively cooling, again, using the natural convection of falling, cooler air going across the ceiling, mixing and falling into the rooms (for a no blowing on you, air in the rooms experience).
My Father was a Master Plumber, Heating and Air Conditioning General contractor with him and my mother owning their own family contracting business (mostly industrial [started by my father's father in 1927]).
They (my mother and father) designed and (with their friends) built this house in 1964. (I was 8 when we moved in in 1965. Prior to that, we lived in an above the 8 car garage apartment behind someone else's home.
From day one, my parents home has had a central vacuum cleaning system (you only carry a very light & its head), a central (hard wired) intercom system (including a speaker/monitor system in each bedroom, the kitchen and at the front door), and many other innovations, some of which I have never seen anywhere else. (anywhere else being in North America, Central America, England, Central Europe, Asia, Australia, Islands in the Indian Ocean, the Western Pacific Ocean and Oceana).
Yeah, I know, that excludes a lot of the world but it also includes a lot of the world.

Thanks for all those very interesting details. The principle is actually very similar to my system, except that the heated or cooled surface is more uniform, I think.

 

[EJ3]

Thanks for all those very interesting details. The principle is actually very similar to my system, except that the heated or cooled surface is more uniform, I think.

In my experience: 2 different ways to have a very similar effect...
And in 1964, either way was a true rarity for someone's home!

 

[wadude]

My parents house, built in 1961 had hot water baseboard heat.
Our current house was built in the late ‘40s with radiant heat. In those days they used copper pipe. Downstairs the copper piping runs through the concrete slab floor while upstairs the pipes are embedded in a thick plaster ceiling slab. The original boiler was fueled by oil, but we switched to an efficient natural gas boiler after a couple of years living there. It’s truly fine having warm basement floors!

 

[EJ3]

My parents house, built in 1961 had hot water baseboard heat.
Our current house was built in the late ‘40s with radiant heat. In those days they used copper pipe. Downstairs the copper piping runs through the concrete slab floor while upstairs the pipes are embedded in a thick plaster ceiling slab. The original boiler was fueled by oil, but we switched to an efficient natural gas boiler after a couple of years living there. It’s truly fine having warm basement floors!

Never lived anywhere that got snow more than about one sprinkling about every 7 years or that could have a basement.
The back yard (parents house [digging more than about 2 feet fills your hole with salt water]):

My Place (the front yard is fresh water (and digging anywhere around here more than about 2 feet fills your hole with fresh water):

So basements are out, as is weather that freezes the ground more than an inch or 2 deep 3 or 4 times a year for more than 2 or 3 days at a time.
And to think that when I was much younger, I intentionally went to places like the Alps around Innsbruck, Austria to go snow skiing.
Now, if I never see snow again, it won't bother me. I am content to not be that cold.

 

[JohnnyAudio]

This is the new mixer in the rack.
Much better than the XONE92