Home greenhouses: Worth having?

 I've entertained the idea of building a small
greenhouse attached to side of home.

I would use it to capture heat in winter to help heat
the home...as well as grow some of my own food.

Anyone doing that out there and can advise abt the
feasibility of this idea?

  me@privacy.net wrote:


It does work for heating the house.

Not ideal for growing food tho, greenhouses need heating to
stop them getting too cold overnight for whats growing in them.

And you cant grow that much in a small greenhouse
anyway except seedlings for planting out outside the
greenhouse and maybe tomatoes etc.

 

was thinking of growing thing vertically using
hydroponics

 me@privacy.net wrote


Sure, but that doesnt fix the overnight heating problem.

I was involved with a fancy solar greenhouse that used hydroponics
that way, but the overnight heating problem involved quite literally
a couple of rooms full of gravel that was heated using a big solar
air heater during the day and was used to heat the greenhouse
at night, all computer controlled. The rooms full of rocks just arent
practical for a small greenhouse.

 

Ok point taken

So you are saying that a small say 10 foot by 10 foot
greenhouse cant contain enough "mass" in the concrete
floor to radiate heat at night?