Radiant heating is more efficient than baseboard heating or forced-air heating

January 6, 2010

Radiant Heating

Radiant heating systems involve supplying heat directly to the floor or to panels in the wall or ceiling of a house. The systems depend largely on radiant heat transfer: the delivery of heat directly from the hot surface to the people and objects in the room via the radiation of heat, which is also called infrared radiation. Radiant heating is the effect you feel when you can feel the warmth of a hot stovetop element from across the room. When radiant heating is located in the floor, it is often called radiant floor heating or simply floor heating.

Radiant heating has a number of advantages: it is more efficient than baseboard heating and usually more efficient than forced-air heating because no energy is lost through ducts. The lack of moving air can also be advantageous to people with severe allergies. Hydronic (liquid-based) systems use little electricity, a benefit for homes off the power grid or in areas with high electricity prices. The hydronic systems can also be heated with a wide variety of energy sources, including standard gas- or oil-fired boilers, wood-fired boilers, solar water heaters, or some combination of these heat sources.

Despite their name, radiant floor heating systems also depend heavily on convection, the natural circulation of heat within a room, caused by heat rising from the floor. Radiant floor heating systems are significantly different than the radiant panels used in walls and ceilings. For this reason, the following sections discuss radiant floor heat and radiant panels separately.

Radiant Floor Heat

There are three types of radiant floor heat: radiant air floors (air is the heat-carrying medium); electric radiant floors; and hot water (hydronic) radiant floors. All three types can be further subdivided by the type of installation: those that make use of the large thermal mass of a concrete slab floor or lightweight concrete over a wooden subfloor (these are called “wet installations”); and those in which the installer “sandwiches” the radiant floor tubing between two layers of plywood or attaches the tubing under the finished floor or subfloor (“dry installations”).

Types of Radiant Floor Heat

Air-Heated Radiant Floors

Because air cannot hold large amounts of heat, radiant air floors are not cost-effective in residential applications, and are seldom installed. Although they can be combined with solar air heating systems, those systems suffer from the obvious drawback of only being available in the daytime, when heating loads are generally lower. Because of the inefficiency of trying to heat a home with a conventional furnace by pumping air through the floors, the benefits of using solar heat during the day are outweighed by the disadvantages of using the conventional system at night. Although some early solar air heating systems used rocks as a heat-storage medium, this approach is not recommended. For further information, see the section on solar air heating systems.

Electric Radiant Floors

Electric radiant floors typically consist of electric cables built into the floor. Systems that feature mats of electrically conductive plastic are also available, and are mounted onto the subfloor below a floor covering such as tile.

Because of the relatively high cost of electricity, electric radiant floors are usually only cost-effective if they include a significant thermal mass, such as a thick concrete floor, and your electric utility company offers time-of-use rates. Time-of-use rates allow you to “charge” the concrete floor with heat during off-peak hours (approximately 9 p.m. to 6 a.m.). If the floor’s thermal mass is large enough, the heat stored in it will keep the house comfortable for eight to ten hours, without any further electrical input (particularly when daytime temperatures are significantly warmer than nighttime temperatures). This saves a considerable number of energy dollars compared to heating at peak electric rates during the day.

Electric radiant floors may also make sense for additions onto homes for which it would be impractical to extend the heating system into the addition. However, homeowners should examine other options, such as mini-split heat pumps, which operate more efficiently and have the advantage of also providing cooling.

Hydronic Radiant Floors

Hydronic (liquid) systems are the most popular and cost-effective radiant heating systems for heating-dominated climates. Hydronic radiant floor systems pump heated water from a boiler through tubing laid in a pattern underneath the floor. In some systems, the temperature in each room is controlled by regulating the flow of hot water through each tubing loop. This is done by a system of zoning valves or pumps and thermostats. The cost of installing a hydronic radiant floor varies by location and also depends on the size of the home, the type of installation, the floor covering, remoteness of the site, and the cost of labor.

Types of Floor Installations

Whether cables or tubing, the methods of installing electric and hydronic radiant systems in floors is about the same.

So-called “wet” installations embed the cables or tubing within a solid floor and are the oldest form of modern radiant floor systems. The tubing or cable can be embedded in a thick concrete foundation slab (commonly used in “slab” ranch houses that don’t have basements) or in a thin layer of concrete, gypsum, or other material installed on top of a subfloor. If concrete is used and the new floor is not on solid earth, additional floor support may be necessary because of the added weight. You should consult a professional engineer to determine the floor’s carrying capacity.

Thick concrete slab systems have high heat capacity and are ideal for storing heat from solar energy systems, which have a fluctuating heat output. The downside of the thick slabs is their slow thermal response time, which makes strategies such as night or daytime setbacks difficult if not impossible. Most experts recommend maintaining a constant temperature in homes with these heating systems.

Due to recent innovations in floor technology, so-called “dry” floors, in which the cables or tubing run in an air space beneath the floor, have been gaining in popularity, mainly because a dry floor is faster and less expensive to build. But because dry floors involve heating an air space, the radiant heating system needs to operate at a higher temperature.

Some dry installations involve suspending the tubing or cables underneath the subfloor between the joists. This method usually requires drilling through the floor joists in order to install the tubing. Reflective insulation must also be installed under the tubes to direct the heat upward. Tubing or cables may also be installed from above the floor, between two layers of subfloor. In these instances, liquid tubing is often fitted into aluminum diffusers that spread the water’s heat across the floor in order to heat the floor more evenly. The tubing and heat diffusers are secured between furring strips (sleepers), which carry the weight of the new subfloor and finished floor surface.

At least one company has improved on this idea by making a plywood subfloor material manufactured with tubing grooves and aluminum heat diffuser plates built into them. The manufacturer claims that this product makes a radiant floor system (for new construction) considerably less expensive to install and faster to react to room temperature changes. Such products also allow for the use of half as much tubing or cabling since the heat transfer of the floor is greatly improved over more traditional dry or wet floors.

Floor Coverings

Ceramic tile is the most common and effective floor covering for radiant floor heating, as it conducts heat well from the floor and adds thermal storage because of its high heat capacity. Common floor coverings like vinyl and linoleum sheet goods, carpeting, or wood can also be used, but any covering that helps to insulate the floor from the room will decrease the efficiency of the system.

If you want carpeting, use a thin carpet with dense padding and install as little carpeting as possible. If some rooms, but not all, will have a floor covering, then those rooms should have a separate tubing loop to make the system heat these spaces more efficiently. This is because the water flowing under the covered floor will need to be hotter to compensate for the floor covering. Wood flooring should be laminated wood flooring instead of solid wood. This reduces the possibility of the wood shrinking and cracking from the drying effects of the heat.

Radiant Panels

Wall- and ceiling-mounted radiant panels are usually made of aluminum and can be heated with either electricity or with tubing that carries hot water, although the latter creates concerns about leakage in wall- or ceiling-mounted systems. The majority of commercially available radiant panels for homes are electrically heated.

Like any type of electric heat, radiant panels can be expensive to operate, but they can provide supplemental heating in some rooms or can provide heat to a home addition when extending the conventional heating system is impractical.

Unlike other types of radiant heating systems, radiant panels have very low heat capacity and have the quickest response time of any heating technology. Because the panels can be individually controlled for each room, the quick response feature can potentially result in cost and energy savings compared to other systems when rooms are infrequently occupied: when entering a room, the occupant can increase the temperature setting and reach a comfortable level within minutes. But as with any system, the thermostat must be maintained at a minimum temperature that will prevent pipes from freezing.

Radiant heating panels operate on a line-of-sight basis: you’ll be most comfortable if you’re close to the panel. Some people find the ceiling-mounted systems uncomfortable, since the panels heat the top of their heads and shoulders more effectively than the rest of their body.

source by  www.energysavers.gov

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FlooringSupplyShop.com, the online distributor of International Flooring Center, Inc., has announced that it has engaged Blanke Corporation

March 19, 2009

Los Angeles, CA – www.flooringsupplyshop.com., the online distributor of International Flooring Center, Inc., has announced that it has engaged Blanke Corporation … as its distributor for the Flooring system Products market in California.

flooringsupplyshop.com will sell and provide customer support services and tech support for Blanke ’s complete line of Blanke UNI-Mat PRO, Blanke PERMAT, Blanke ULTRA-DRAIN, Blanke Transition’s, Blanke AQUA SHIELD, Blanke DRAIN Mat and more including Customer support and tech support.

Commenting on the announcement, Mr. Motti Vaknin President of International Flooring Center, Inc. / www.flooringsupplyshop.com. Said: “I am exciting Blanke Corporation flooring system line. They have the most professional flooring product line with a full range of solutions for the tile industry, that can provide major advantages for our customers.”

Mr. Motti Vaknin, President of International Flooring Center, Inc. / www.flooringsupplyshop.com, said: “International Flooring Center, Inc./ www.flooringsupplyshop.com is pleased to represent Blanke Corporation in California. We are confident that this will be a successful relationship. knowing and testing Blanke’s product for over 2 years, we trust the product, and our customers would love it, now we will be able to deliver our full line of Blanke florring systemt quickly to our customers.

Not like Schluter system Blanke product are superior and pass the Tile Council of North America testing

With their Online Store International Flooring Center, Inc. / www.flooringsupplyshop.com. expands their local coverage thru out the united states including Canada and other countries.

About Blanke Corporation

Founded in 1948, Blanke and Co., the parent company of Blanke Corporation began operations forming industrial grade wire and fabricating special metal parts from brass, aluminum and rust resistant metals.

Expertise gained during these early years enabled the company to assume a leadership role in an emerging industry by becoming one of the first producers of metal trims and profiles for ceramic tile and stone installations.

For more information abut Blanke Corporation, please visit Blanke Corporation web site

For information: www.flooringsupplyshop.com or Contact: contact@flooringsupplyshop.com Phone: 877-880-8453

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If you’d like more information about our product, or to schedule an interview with Motti Vaknin, please call our office at 877-880-8453 or e-mail at contact@flooringsupplyshop.com

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ProMelt Snow Melting System SunTouch ProMelt products are a simple way to eliminate snow and ice from

March 19, 2009

SunTouch® ProMelt™ Snow Melting System

Pre-woven snow melting mats for quick and simple installations.

SunTouch ProMelt products are a simple way to eliminate snow and ice from stair way, drive way, entry way and more..

Follow these recommendations when selecting ProMelt Mats:

1. Determine what voltage will be used: 120VAC, 208VAC, 240VAC, or 277VAC.

2. Determine the heat output. The climate and amount of snowfall will dictate this choice. In general, most systems will require 50 Watts/Sq.Ft. spacing to melt snow and ice. Some residential or light commercial systems in temperate climates may need only 38 Watts/Sq.Ft. spacing.

3. Determine the square footage of the area to be melted. Do not include areas under built-ins like planters or similar obstructions. Stay 3-6″ from edges of slabs and do not cross expansion joints if possible. Add up all the areas to be melted and round down the nearest mat size(s) to fill the area. Either 2′-wide or 3′-wide mats can be selected.

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Not sure what and how many you need, we here to Help

Contact@flooringsupplyshop.com by Phone 877-880-8453 (TILE) , Email, or Fax, or stop by our store with the layout of your room and we will give you complete list of what you need.

Click on our Flooring Calculator to calculate not just how many electrical floor heaters you need, you can also see how much it will cost you daily or yearly, and adjust your uses base on your electrical floor heating budget.

We are not and Internet-based store like most of our competition, we have a physical store showroom, warehouse based in Los Angeles, CA . We welcome our customers and website visitors to our store.

Store hours 7:00 am – 5:00 pm Mon – Fri, and 12:00 Noon – 4:00 pm Sunday

We ship same day any order received until 4:00 pm, (PST) any next day or 2nd day order coming up to 4:45 pm (PST) will also be ship same day.

SunTouch ProMelt Installation ManualSunTouch 25 years Warranty

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