Here's a picture of radiator that I've been talking about that I've
been wanting to remove and replace with underfloor heating.
I would also like to say this: I don't really mind doing something
that's wrong and then redoing it. HVAC and plumbers in my area want
$1200 per person a day so whatever funds I pore into this will be
nothing compared to having someone else come out and do it right.
I'll learn a lot.
So my plan is this. I would like to determine the BTU of this unit
(can you help?) , cut it out, install PEX tubing at, let's say,
the BTU output and put a valve on it that will allow me to control
amount of heat. If this throws the whole system off balance, I will
shut it off and and use a space heater until I figure out how to do
right. We are talking about an area that is about 60 sq ft.
What do you think?
Thanks a lot in advance,
Lets try again.
The radiator in your picture is small,
it is in a small room, so it probably
gives out less 1 Kwh..
So lets ignore its output as its
Lets look at the size of your boiler, if
you intend to fit underfloor heating,
then the first issue is, the size of the
boiler, its output, in Btu or Kwh.
Does it keep your home comfortable
Is it flat out in cold weather, or at say
three quarters output?
If you have the spare heating
Now, let look at the room you intend
to heat with underfloor heating.
What type of floor do you have at the
How do you intend to fit the
The recommended standard, is to lay
four inches of styrofoam insulation
on the floor. Cover that with a
Then starting in the middle of the
room lay a spiral of pex pipe over the
styrofoam, fixing it in place with
plastic staples, then poor three or
four inches of concrete over and
Or lay four inches of styrofoam on the
floor, then lay strips of wood in
parallel lines on the styrofoam, laying
the pex between the wood strips and
cover with three quarter thick ply.
Either way the floor level goes up,
requiring alteration to things like
-doors, baseboards etc; adding a lot
If you don't use four inches of more of
styrofoam or similar, then a lot of
your heat input will be wasted as
heat always goes to cold.
Hi, let me try to answer as much as I can.
The boiler heats the house comfortably and there is plenty of heat
even on the coldest days (meaning even on the coldest days the boiler
shuts off periodically.
The heating will go between joists under the suflooring. The floor is
3/4" oak over plywood. Above it is a total demolition job. I'm doing
everything myself with friends so any additional work is
inconsequential. There are two radiators of which I'm removing one.
Thanks again in advance,
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