A Consumers Guide to
Purchasing Radiant Heating systems.
Copyright (c)
Mark Eatherton,
First World Serial Print and Electronic Rights
So, you've seen it on television, and you've heard about
it on the radio. You even have a friend who has a friend
that had it installed in their home, and you think you're
ready to make the big plunge into the world of radiant
heating. So where does a person start? You've been to the
Yellow Pages, and you didn't even find a category for
Radiant Heating. You asked your friend with a friend that
had it installed, only to find that the guy he had install
it left town with numerous creditors chasing him. Fear not,
there are some good radiant heating contractors out there.
You just have to know where to find them and you must
understand what it is that you're looking for.
Where to start? An excellent resource is to check for
local members of a national association, like the Radiant
Panel Association. But just because you found someone who is
a member of a national organization doesn't necessarily mean
that you've completed your homework. The fact that they're a
member of a national organization indicates that they are
interested in doing the job correctly, but it doesn't always
mean that they are the best people for the job.
Before you make the decision as to what contractor to
use, you have a lot of homework to do. You should
familiarize yourself with all the different methods of
applications of radiant heating.
Most people are familiar with the radiant floor aspect of
radiant heating, but it is by no means the only method of
radiant heating. It is the most comfortable, but it's not
the only way to go. Even within the radiant floor category,
there are numerous means and methods of providing radiant
comfort. The tube can be installed below the floor,
suspended just below the floor, or installed in heat
transmission plates. It can be installed on top of the
floor, in metal and wood heat transmission plates, or
stapled to the top of the floor and poured in a cementicous
material. All of these different methods have certain
benefits to their credit, and all of them have detractors.
For example, it you chose to go above the floor with the
tube embedded in a cement like material, can you afford to
give up the 1-1/2" to 2" of headspace that will be lost to
the installation? Can your floors structural system handle
the additional dead load weight factors being imparted to
them without additional beefing up? What kind of floor
finish can be applied over this type of system?
This is just a minor example of the questions that must
be asked, and answered before you even begin making the
decision as to which contractor to use. What about some
other methods of providing radiant comfort.
What about radiant ceilings? A radiant ceiling can offer
comfort conditions very comparable to those of radiant
floors. In fact, many people who have radiant ceilings think
they have radiant floors because the floor is so warm. This
is due to the inherent nature of radiant heating systems to
reflect heat in mother natures effort to balance out any
differences in surface temperatures.
A radiant ceiling heating systems installed cost is
generally less than a radiant floor heating systems
installed cost. With a radiant floor heating system, even
though theoretically, it is not necessary to install heat in
every square foot of floor space, you want warm floors
everywhere you walk, therefore it becomes necessary to
install tubing everywhere in the house floor, even in areas
that don't technically need it. With a radiant ceiling
heating system, you install heat only in those areas that
need it, which is typically just in those areas near the
outer perimeter of the home. This results in a lot less
tubing having to be installed, which equates to considerable
installed cost savings. When considering this type of
installation for a retrofit consideration, the only
detractor would be the loss of approximately 1-1/2" of
ceiling height. You won't have to worry about details like
floor finishes, cutting off the bottoms of doors, raising
counter tops and structural beefing considerations.
What about those European style steel panel radiators? I
have some of these in my own home, and I can tell you from
experience that they too are extremely comfortable. The only
possible detractor of their installation has to do with the
panel radiator's location. Ideally, it should be located
near an outside window, and its "view" of the room should be
unobstructed. This presents some challenges to furniture
placement that aren't considerations with radiant floors or
ceilings. It's not a fix all system, but it does represent
another option.
What about the driving force behind these wonderful heat
emitters? What kinds of decisions need to be made there?
What are your needs? What are your wants? Do you want the
system to be able to heat your domestic hot water needs? Do
you want it to take care of melting ice and snow on that
north facing porch and sidewalk? Do you need it to heat up
the garage for that occasional fit of Home Time? Do you want
a Ford or a Chevy, or do you want a Cadillac, Mercedes Benz
or possibly even a Rolls Royce? What does your contractor
have to offer? Remember that the driving force behind your
physical plant will represent one of the more expensive
individual components in your comfort system selection. It's
important to know the different options available. It's also
important to understand the need for a good and efficient
means of controlling this system. An under controlled system
may be able to provide heat, but heat and comfort are two
completely different things. Then there's the question of
operating efficiency. Some of the most comfortable systems
in the world are also the least efficient. Ask your
contractor how they intend to control this wonderful heating
system you are planning.
How many zones are you planning on having? Typically,
there are the big three. Sleeping areas, common living
spaces, and occasional use living areas. In addition to
these, depending on the system you choose, other individual
rooms or groups of rooms can be independently zoned. I
strongly recommend that the master bathroom be a zone by
itself, separated from the sleeping area because you are
usually wearing less clothing and are typically wet in the
bathroom, hence the need for a higher room temperature than
you would typically keep a bedroom or sleeping area at. But
these are decisions that you will have to make.
What about finish floor coverings? Are there some types
of flooring that can't be used with radiant heat? The
correct answer to this is, it depends. It depends on how
large of a heating load you are trying to carry with the
floor, and if you're not using the floor to carry the load
then it doesn't matter. If you are using the floor to heat
the home, the harder and thinner the finish flooring
materials are, the better off you will be. Putting thick
carpet and pad on a radiant floor heating system is like
tossing a thick wool blanket on top of an old upright cast
iron radiator. It has a tendency to stifle the heat output
of the radiator. Choose your floor finish materials
carefully when dealing with radiant floor heating systems.
There are no finish flooring systems that can't be used
with radiant floor heating systems, it's just that some of
them require hotter water temperatures and closer tube
spacing in order for the floor to put out it's maximum
potential. In some rare cases, depending on the system type,
age of the home and floor coverings chosen, it may be
necessary to provide above floor "augmentation heat" for
those extremely cold periods of time. These features are
extremely important to the designer/contractor who will be
installing your comfort system.
How does a person choose their installation contractor?
First off, you need to find someone who has experience in
the hydronic heating field, and preferably someone with
experience in the radiant aspects of hydronic heating.
Although it's not rocket science, it is substantially more
complicated than simply running water lines and it does
require certain knowledge about the physical limits imposed
by different methods of heating, and choices in physical
plant. After you've done your homework and decided what type
of system you want, call up a couple of qualified
contractors and have them come meet with you. Have a set a
blue print or house plans available for them to take back to
their offices. Show them what you have in mind as it
pertains to zoning, floor finishes and what you expect in
the way of physical plant considerations.
If they have not already offered it, ask them to show you
proof of liability and workmen's compensation insurance. Ask
them what associations they belong to. Ask them if their
employees are trained on a regular basis, and find out if
any of them are certified in the installation of radiant
heating systems.
Ask them for references that you can call up, and call
these references and ask them if they would mind if you came
by to look at their installation. When you get to the
references home, ask the homeowner if they're happy with the
system. Ask them if they're happy with the installing
contractor. Find out if they've had any problems with the
system, and find out how the installing contractor responded
to those problems.
Pay particular attention to the quality of the
installation. Are the pipes installed in a neat, straight
and orderly manner? Did they wipe the excess solder and flux
off of their soldered joints? Are there any signs of leaks
in the boiler room? Does the wiring appear to have been done
in a professional manner? Were the owners given an Owners
Manual pertaining to the heating system? Were they shown
where all of the emergency shut off valves and switches to
their heating system are located?
Although you may not be able to find the 'perfect' dealer
as it pertains to all of these issues, if you request that
the installation contractors include these details in their
proposals, you and they will know exactly what is included
in their proposal. You will also be getting closer to an
apples to apples bid comparison, because all of the people
involved are playing from the same page.
Be wary of the contractor who demands money up front. The
contractors inability to purchase the materials and labor
necessary to perform the work on their own without using
your money could indicate that they may not be the best
businessmen in the world to do business with. Instead, offer
to pay them for work completed in a timely manner. If they
balk at that idea, you may want to consider doing business
with someone else.
In general, become an intelligent consumer. Do your
homework before you begin calling contractors. This way, you
will not be intimidated by terms and jargon you do not
understand. Make sure you check out their references and
visit their completed job sites. Ask a lot of questions. You
are getting ready to purchase what just might be the most
expensive individual component your house will ever see, and
when done properly, it will provide you with many years of
highly efficient, trouble free comfort. Shop wisely, and
don't always choose the lowest price. Lowest is not always
the best. Look for value, benefits and features and don't
make your decision based on price alone.
Click here for Marks
biography and contact information |