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Radiant
Floor Heating - Dry System Hydronic
 When you see or read
the term “dry system” in association with
radiant flooring, this means then that the
radiant heat system was installed beneath a
finished floor without concrete or gypsum
material poured over the radiant heat tubing.
Dry systems are usually installed in
circumstances where concrete or flooring
material cannot be poured. Dry radiant systems
can be installed either with the radiant floor
tubing above the floor which is when it is
placed between two layers of plywood, or below
floor where it is placed under the subfloor.
Hydronic radiant floor systems provide
heat by pumping hot water through tubing located
in loops beneath the finished flooring material.
As the hot water flows through the tubing, it
heats the surrounding air and flooring material,
which radiates the heat directly to objects in
the room.
For systems installed above floor, the
system is sandwiched above the sub floor and
below the finished flooring material. Often,
this system
employ grooved wood panels that are installed
beneath the finished floor and secures the
system’s tubing. Manufacturers of the panels
claim that it can be used with a variety of
floor coverings, including ceramic and marble
tile, vinyl, wood, and carpeting.
Below floor systems, are installed
beneath the subfloor and involve attaching the
system’s tubing to the underside of the subfloor
either by suspending the tubing from the
subfloor or with the aid of special brackets.
This is a very popular system for retrofits, as
it does not involve the tearing up of the
existing flooring material. In addition, it also
cost less to install than the above floor
systems. However, the below floor systems do
require a higher source temperature in order to
perform consistently to that of an above floor
system.
When retrofitting a home using an above floor
system, it can be very costly as well as time
consuming. The existing finished flooring will
have to be removal, however if you were planning
to replace your existing flooring anyway, then
this be an option for you to consider. The
installation of a below floor system will
require the drilling of holes through the floor
joists so that the tubing can be installed
through.
Dry hydronic systems both above and below
installations have been credited for saving
homeowners approximately 20% to 40% on their
heating bills. Hydronic radiant heating is
energy efficient, quite, virtually maintenance
free, hypoallergenic, and does not require any
ductwork. If you are building or renovating your
current home, consider installing a hydronic
radiant heating system.
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