Posted - 20 December 2002 10:48
I'm looking for the info on Warmboard radiant heating.
Does anybody have real experience with it? Have it
installed? What are disadvantages? So far I found
none (from reading they brochure...) We are planning
to remodel the house and looking for heating system
alternative to air. We live in Bay Area, California,
no snow here obviously.
Any help will be appreciated!
Posted - 13 March 1999 20:32
The comfort of radiant heat is not worth the
disadvantages: 1. Stale, unfiltered air
2. Electricity is required to pump the
3. Repair ability if it develops leaks.
The best alternative to fan forced air is gravity
forced air. Both have adequate circulation for air
filtering if you have a two story house. Gravity forced
cooling (swamp cooler without fan or heat pump) can use
the same vertical trunk line.
Putting a warm air outlet under a window is bad
technology because the fan forced system then fights
the natural circulation, a waste of energy. Cold air
near the window will be replaced by warm air if the
outlet is in the bottom part of a central wall.
Historical installers are not in your best interest
because they want to increase their duct work sales.
If you want heat reliability during power failure
without a backup wood stove or fireplace, use two
gravity fed fanless wall furnaces facing each other at
the bottom of a 2 ft square X 18 ft tall closet with
cold air returns and filter at the or in the basement
Posted - 15 March 1999 22:33
But if you use gravity air you can not have a/c
because a/c needs forced air to move it. Also you are
wrong when you say its is not good to install a supply
duct under a window, this is hte best spot for a grill
remember hot goes to cold the hot air is leaving the
house this is why they call it heat loss
Posted - 22 March 1999 23:19
Gravity fed heat has the exhaust chimney inside the
distribution "chimney" or vertical distribution trunk.
The air filter in the winter is at basement floor level
just above the cool air returns at the bottom of the
"trunk". It is relocated at springtime to the upper
ceiling level to filter cool air descending from the
roof level by itself. The same trunk line services both
heating and cooling. When there is no demand load, and
air circulation is desired, the trunk line air will not
move either direction unless assisted by a small
assisting, not counter flowing, fan. Heating and
cooling can use the same reversable fan. Zero demand
loads occur mostly at the equinox times of the year and
are a small percentage of the year.
Cooled air at the top needs only 23 feet of vertical
travel for a gravity force equal to a fan.
The temperature at the window surface, if cool, will
force the air down. If you feel the outside heat at
that surface, the gravity force will take it up. With
both movements enhanced instead of countered, you will
find the cooling or heating registers at the same
place, but not under the window. If you don't agree
with this, find a university physics professor and be
prepared to get out of the sheet metal business and get
in to the politically correct heating (HVAC) business.
21 North 100 East
Willard, Utah 84340-0041
Posted - 21 August 1999 12:53
i live in santa cruz mountains and saw your question about warmboard. i've just received the product info on it myself and it sounds fascinating. we're getting ready to do a major renovation of our home and would greatly appreciate the results of your research with this product. did you decide to use it? happy with it?
thanks so much!
Posted - 18 October 2000 17:42
I too am looking for feedback based upon
real experience with Warmboard. If you
installed it since posting your message,
please let me know (a) what were the
cost savings or increases; (b) was the
installation problematic; (c) were you
able to easily find competitive, quality
contractors to install it; and (d) is
radiant heat all that it is cracked up
to be? Thanks.
Posted - 20 March 2001 12:50
We are on the other side of the
country and arre about to begin
construction of a new home in New
Hampshire, so we do get the snow,
especially this year.
Did you put the Warmboard in? I am
actively moving in that direction as an
alternative to Wirsbo or Stadler's
radiant system. I like the concept of
a single board that is structurtal, etc.
I would be pleased to hear any
feedback that you may be able to offer.
Show All Forums |