It's a bit like plumbing but for air.
Making holes through the wall.
It took them less than 3 hours to put vents to 4 rooms and vents to and from the lounge which will be the heat source. They also changed the bathroom fan which vented into the ceiling cavity to a new quieter one that vents to outside.
I will report back on how it works. Mostly it is for Winter heating, not Summer cooling.
So while I was outside I took photos.
This dahlia has velvet petals and Black foliage.
The first Autumn Crocus are out ( or are they colchicums ? )
I am still trying for the perfect shot of Monarch Butterflies on the zinnias. Why do they like them so much?