Hot Water Radiant Floor Heating Systems: 64 Interesting Facts

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64 Things About Hot Water Radiant Floor Heating Systems | Best Hydronic Radiant Floor Heating Systems

• Below is the way I was taught to design radiant floor heating systems by some folks much smarter than I am. I’m going to pass along this information because it works, and we need our systems to work. This method is quick, accurate and shows you how to do it by hand. - Source: Internet
• . They can operate at low temperatures and they enable condensation of the flue gasses. Be aware that these benefits are only available with quality water heaters and may not be realized with cheap models. Cold water pre heat provides limited free cooling by the detail where cold replacement water passes through the tubes in the floor before it goes to the tank. - Source: Internet
• 1. A well-designed system may not produce floors that will always warm their toes. Be sure they know that. - Source: Internet
• Radiant floor heating will heat a home evenly and eliminate any cold spots that conventional home heating methods face. Cost-effective: Though initial installation costs may give homeowners pause, radiant floor heating proves more cost-effective in the long run. Most come with 30-year warranties. Radiant floor heating requires lower temperatures than radiators to heat a room and thus lower your heating costs. - Source: Internet
• When it comes to radiant floor design, there’s a lot to know. There’s no way I can cover a complete radiant design in this column or this entire magazine for that matter. Most design manuals are in the 200-to-300-page range. But I’ll do my best to hit the highlights and the things to avoid at all costs. - Source: Internet
• Conventional boiler loop systems that also provide domestic hot water with tanks run the boiler at full capacity even if radiant heating is not called for or DHW demand is low. All HydroShark systems modulate, adapting power to the load. Because the DHW Integrator Panel provides on demand domestic hot water with no tank, the system works at maximum efficiency even if demand for hot water is low. - Source: Internet
• • Insulate below your radiant floor panel, no matter what type you choose. Buyer beware: Not all insulation performs as advertised. Follow generally accepted industry standards. - Source: Internet
• Warm water comes out of the tank and flows into your fixtures such as sink, shower etc. Cold water from the well or from the town water main must replace the water that was used. This cold water goes through the underfloor radiant tubing on its way to the water heater. This prevents stagnation of the water within the tubes during the summer and provides some free cooling. - Source: Internet
• It’s come a very long way since then. Though stone flooring is rare in modern homes, ceramic tile is not and that is the most common flooring surface used in homes that use radiant heat. However, hardwood, cork and even carpet are also viable floor surfaces for this type of heat. - Source: Internet
• Hydronic or water-based radiant heated flooring costs between $6 to $20 per square foot. Electric-based radiant floor heating runs between $8 to $15 per square foot. Both range in cost from $1 to $5 a day to run. - Source: Internet
• Cost: Electric radiant floor heat installation comes with a cost and a move to a hydronic radiant floor heat system costs even more upfront. Consider it an investment where savings will be recouped over a span of years. A hydronic system will likely require some plumbing updates as well, depending upon the age of your water heater and pipes. - Source: Internet
• With electric floor heating, electrical cables are installed above the subfloor and a thermostat is used to control temperatures. This is an ideal system for small rooms due to the high cost of electricity. It’s also a suitable floor heating solution if you’re looking for supplemental heat. Radiant floor heating systems that use electrical cables are often installed in bathrooms and kitchens. They are able to heat up the room quickly and are cheaper to install than hydronic systems. - Source: Internet
• If you really want to incorporate carpeting in your home, use thin carpets with very minimal padding. If installing radiant heating systems in wood flooring, opt for laminated wood instead of solid wood. Solid wood is more prone to shrinking and cracking due to the drying effects of the heat. - Source: Internet
• • Determine floor covering R-value. Charts for these values are available at tubing manufacturers’ websites such as REHAU, Uponor or Mr. PEX. - Source: Internet
• Radiant heat—a no-brainer if you’re building a new house—can be retrofitted to fit the floors of existing homes, too, although installation costs will be higher. In retrofits, tubing is attached to the underside of the first-floor subfloor, assuming there is access to it from a basement or crawl space. If the renovation is extensive and the finished floor is going to be replaced in any case, it’s usually better to install tubing over the subfloor where it will be more efficient, easier to install, and require less tubing. Adding radiant heat to second and third levels, when existing floors are to remain in place, may require removing the ceiling of the rooms below to gain access to the underside of the subfloor. - Source: Internet
• Other than the comfort that comes with even heat distribution, radiant heating doesn’t constantly cycle on and off. Hydronic systems save you energy and lower fuel costs leading to further savings. The boilers use very low temperature to heat your home. This hydronic system is likely to cost more than a forced hot air system. However, in the long run, it saves you money. - Source: Internet
• Energy Efficient Pumps In addition to standard models, most HydroShark panels are also available with electronically commutated motor (ECM) pumps for even greater energy efficiency. The ECM pump-equipped panels will reduce energy consumption by a minimum of 50%. If set to their automatic mode, they will automatically analyze the heating system, find the optimum pump setting, and continuously adjust operation to changes in demand. This will reduce power consumption by up to 85%, ensuring the lowest possible energy consumption without sacrificing comfort. - Source: Internet
• • Perform a room-by-room heat loss load calculation. Block loads usually don’t work very well with radiant floor design because it’s rare to have the same type of flooring throughout. You can have two identical rooms with identical heat losses, but they may require different supply water temperatures because of the finished floor. Heavy padding and thick carpeting are going to require higher water temperatures than one with tile or stone. - Source: Internet
• Though initial installation costs may give homeowners pause, radiant floor heating proves more cost-effective in the long run. Most come with 30-year warranties. Radiant floor heating requires lower temperatures than radiators to heat a room and thus lower your heating costs. Controlled heating: Most installations include a connection to a smart thermostat or a thermostat with Wi-Fi, meaning homeowners can control the temperature in each zone set up with radiant floor heating. - Source: Internet
• All types of floor heating systems need to be properly maintained in order to reach the expected lifespan. Hire an expert who understands the maintenance demands of underfloor heating systems to ensure it’s always in good shape. The hydronic systems have pipes that will last for many years and may need minimal maintenance. - Source: Internet
• Hydronic systems are more costly to install than the electrical cables that provide underfloor heating. The main advantage of this system is that it’s less expensive to operate. It’s an ideal solution for heating larger areas such as the entire house. A hydronic system can offer extreme comfort and be used reliably as the home’s main heating source. - Source: Internet
• Don’t want to pull up your existing flooring? Companies such as SunTouch make electric radiant pads that fit in joist bays under the subfloor. You will, of course, need access to the bays from a basement or crawl space. Batts of fiberglass insulation are installed under the mats so most of the heat goes up, not down. - Source: Internet
• • What type of floor covering is installed in your home and will it work? Radiant heating performs better in certain types of floor covering compared to others. For instance, if your floor is made of ceramic tiles, it will work perfectly with radiant floor heating since the material warms up fast and evenly. However, floor coverings like carpets will make it difficult for heat to get to the room as they act as an insulating barrier. - Source: Internet
• For basements and areas where a concrete slab is being poured, we run tubing for the radiant floor system before the concrete is poured. Tubing is attached to the reinforcing wire mesh or rebar. The concrete is poured so that the tubing is embedded into the concrete slab. - Source: Internet
• This system is incredibly efficient. During the summer, limited free cooling is enjoyed, which saves on your air conditioning bill. Heat is absorbed from the building as the water in your radiant underfloor heating system warms up to room temperature. That room temperature water gets drawn into the hot water tank as hot water is used in the home, and gets replaced in the underfloor radiant tubing with cold water. The room temperature water pulled into the domestic hot water tank from your radiant system also costs less to heat, which saves again on your gas bill! - Source: Internet
• Radiant floor heating systems can last for many years but they must be installed well in order to reach their expected lifespan. The type of system that is best for your property will depend on your unique needs as well as the budget. Get a technician to advise on which floor heating system works best for your unique requirements. Consider this as a long-term investment that contributes to increasing the value of your property. - Source: Internet
• Installations have been simplified in recent years with the advent of subflooring that’s pre-fitted with tubing channels. Warmboard, for example, manufactures 4 x 8 radiant floor panels for new construction and 2 x 4 panels for remodeling that are lined with aluminum sheeting for even heat distribution. The panels are more expensive than materials used in some other systems, but they are more efficient and reduce the labor costs, too. - Source: Internet
• “Prompt response to our solar heating system trouble. Thorough explanation of the problem. Greatly appreciated.” - Source: Internet
• With 25+ years in the business and extensive practical knowledge of green building, Sundance can provide the best radiant floor heating solution for your home or business. Once we install your radiant heat system, we back it up with the best service department in the region. Homeowners give our service technicians high marks for their expertise and professionalism. We back up our radiant heating systems after they are installed, giving homeowners peace of mind that their radiant heat will provide comfort for years to come! - Source: Internet
• Those six things are more than enough to kill the radiant panel, the boiler and all the other components. I’m not sure how the ensuing lawsuit went, but South Barrington is at the top of high-society suburbs of Chicago, so I know the homeowners did not go gentle into that good night. I still remember the homeowner’s name, and I can’t remember what I had for dinner last night. That’s how epic this train wreck was. - Source: Internet
• The basic idea of a radiant heating system is simple. Hot water is run through tubing that is either attached under the floor or embedded in the concrete slab. The hot water running through the tubing warms the floor and radiates heat into the building. By heating the floor, you create a thermal inversion that traps cool air at the ceiling and circulates warm air where you are. - Source: Internet
• And with radiant floor heating, after the fact can be a nightmarish ordeal. Tubing is seldom easily accessible, so correcting loop lengths, kinks and leaks usually requires demolition of some sort. Nobody is going to be happy about that. - Source: Internet
• A small project might be a DIY task but since the task requires a self-leveling compound to attach the underfloor heating system, it’ll take a day or two to dry. Plan on installing it in chunks since parts of your house will be off-limits as it dries. Raises floor levels: Though not significant, radiant floor heating will raise your floors slightly because of the heating elements below your floor. You may see your floor rise by a 1/2-inch, so it’s something to consider in lower ceiling spots. - Source: Internet
• Your browser does not support video.http://www.radiantec.com/wp-content/uploads/opendirect02_polaris_fixture.mp4 - Source: Internet
• • Determine the floor surface temperature. Once you know the thermostat setpoint temperature and the BTU/hour/square foot, you can quickly determine the floor surface temperature by using this formula: (BTU/hr./sf ÷ 2) + setpoint temperature. - Source: Internet
• • Is your home properly insulated? Poor insulation can mean energy wastage. Even the most effective heating system, in a home that’s not well insulated, won’t perform optimally. Consider investing in proper insulation first. - Source: Internet
• When the thermostat senses the need for heat, it turns on the pump. Warm water is pumped from the water heater through the tubing within the floor, radiating heat through your underfloor radiant system and into your living spaces. The warm water reaches the end of the tubing loop considerably cooler than it started and makes its way back to the heater to be reheated. - Source: Internet
• Radiant floor heating costs approximately $10 to $15 per square foot. You can choose heated floor mats, heat strips or heating cables. There are also hydronic systems, which can run more expensive than electric options. The cost depends on square footage, but the national average cost of radiant floor heating is $3,800 and ranges from $1,700 to $6,000. The low-end cost of radiant floor heating is about $200 and the high-end cost is up to $10,000. - Source: Internet
• The Open Direct System uses a single domestic water heater for space heating and domestic hot water, eliminating the need for a boiler. The low operating temperatures of radiant heating allow the use of state-of-the-art “condensing” domestic water heaters which are 95 percent efficient. The summertime cooling feature is free and actually lowers the costs of heating domestic hot water (see diagram). - Source: Internet
• Electric radiant floor heat installation comes with a cost and a move to a hydronic radiant floor heat system costs even more upfront. Consider it an investment where savings will be recouped over a span of years. A hydronic system will likely require some plumbing updates as well, depending upon the age of your water heater and pipes. Installation: A small project might be a DIY task but since the task requires a self-leveling compound to attach the underfloor heating system, it’ll take a day or two to dry. Plan on installing it in chunks since parts of your house will be off-limits as it dries. - Source: Internet
• When you select a radiant floor heating (RFH) system, you’ll choose either electric or hydronic. The amount of power it takes to heat an entire house with an electric RFH system isn’t cost-effective, so if you’re heating your whole house, then hydronic is the way to go. Are you building a new house or renovating an older home? If it’s new construction, a hydronic system is probably the best choice. You can install hydronic systems in an existing home, but you’ll have to tear up the flooring, which is expensive and a lot of work. - Source: Internet
• If you are new to radiant heat, our Design and Construction Manual is a “Must Read!” This manual provides a wealth of general information about radiant heat. Slab insulation methods, calculating heat loss, tubing options, system options and much more, all written in easy to understand language for the homeowner with pictures and diagrams. You can also find the numerous different ways that tubing can be installed. - Source: Internet
• Radiant floor heating works with any type of flooring material, but solid surfaces produce a better heat transfer. Regardless of the flooring material you choose, it’s imperative to have the right amount of insulation underneath the tubing. Have at least three times as much insulation below the radiant tubing as you have above it to ensure the heat will go up rather than down. - Source: Internet
• Because throughout the next two winters, I spent enough time at that house for it to qualify as my home address. The system never worked. Not at startup, not a week later, and certainly not a year and a half later when I moved on to a company opting for shorter loop lengths. It’s there I started digging into radiant heating books to educate myself on all things hydronic. - Source: Internet
• • As I mentioned earlier, different floor coverings are often going to require different supply water temperatures. That said, do your best to limit the number of different water temperatures you’ll use in your design. Good mixing valves and circulators aren’t cheap. If I have design supply water temperatures with 10 to 15 degrees of one another, I’ll consider using a number in between if there are no foreseeable problems. - Source: Internet
• without any input from the homeowner. You don’t have to make any separate actions or adjustment at all to use it. This is how the two different modes work, starting with heating mode: - Source: Internet
• • When installing tubing on top of the subfloor for a 1 1/2-inch overpour, be careful to not place all your homeruns in the common hallway. If you do so, the hall will overheat; it’s probably where your thermostat is located. I prefer to drill and place them under the floor. If that’s not possible, insulate the majority, if not all, the tubing. Your room-by-room load calculation will dictate how much to insulate. - Source: Internet
• Like all floor-heating systems, there’s a lot of misinformation regarding radiant floor heating. Many assume that these systems are costly, dangerous and don’t complement their flooring material. All these are far from the truth. We’ll cover some of these concerns in the paragraphs below and debunk common myths on radiant floor heating. - Source: Internet
• We believe this system is the best alternative. It is simple in design, efficient in operation, has modest initial costs and can make use of environmentally friendly solar technology. When and where local codes permit the delivery of space heating and domestic hot water through a single system, we recommend the Open Direct System. Here’s why: - Source: Internet
• • Do you want to save on fuel? If you choose to go with the hydronic system, choose a fuel source that is cost-efficient. You can also incorporate an electric floor heating system in small areas to use it during off-peak hours e.g. at night. - Source: Internet
• HydroShark panel systems feature a closely spaced tee to create hydraulic separation between the boiler loop and the emitter heating loop. The loops are independent and each uses its own pump. This allows the flow rate for each loop to be separately adjusted for optimum performance. This is far superior than systems that use a single loop for both the boiler and the heat tubing. - Source: Internet
• Radiant floor heating is installed beneath the floor to provide the warmth needed from the bottom up. The technologies used in incorporating heating under the floor have evolved significantly over the years. These systems work by circulating heat through flexible tubing that is installed underneath the floors. The floor gets warm and radiates the heat throughout the room. It’s a gradual process that’s more effective and distributes heat at a much more comfortable rate. - Source: Internet
• Radiant floor heating technology, also known as ‘hydronic in-floor’ heating, is an exceptionally energy-efficient, comfortable and healthy way to warm your home or business. Radiant floor heat makes your home or building more energy-efficient by reducing infiltration losses and by only heating the lower half of the room. When assisted by a solar thermal system, the energy savings are even greater! - Source: Internet
• HydroShark panels offer maximum compatibility with radiant floor heating installations. Panels are available with or without the boiler integrated on the panel, allowing boilers to be installed separately from the heating panel. This increases both boiler choice and boiler installation location. HydroShark components can be tailored for multiple systems and still provide an easy and professional installation no matter the system or where it is installed. - Source: Internet
• Nothing makes a home uncomfortable like cold floors. Would you look forward to stepping on a cold floor from bed or after leaving the bathroom? Certainly not! That’s why heated floors have become quite popular in homes all over Canada these recent years. Radiant floor heating is a somewhat new and more effective way of heating modern homes. These systems are totally invisible in the sense that they don’t occupy any floor space, make noise or increase dust in your home. - Source: Internet
• In 1965 hydronic radiant floor heating had a revolutionary advance when Thomas Engel patents the method for creating PEX-A. This tubing was far superior then anything the world had ever seen before in relation to floor heating. Cross linking the molecules of the polyethylene proved to be an amazing feat, which made the tubing able to withstand high temperatures and pressure. Throughout the 1970’s PEX tubing erupted with the addition of oxygen barrier for oxygen permeation. Standards for floor heating were then issued in Europe, and by 1985 floor heating had become a traditional system in Europe. - Source: Internet
• 2. If they intend to put area rugs on the radiant heated floors, they need to know they’re blocking their only heat emitter. The bigger and thicker the rug, the worse it will be. - Source: Internet
• Heavenly Heat Inc. provides consumers with proper solutions when it comes to floor warming systems. The company has highly experienced installers and flooring experts who offer great advice as well as quality installations. The company manufactures its own products which are available at specialized tile stores. - Source: Internet
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• Electric radiant floor heating costs about $6 per sq. ft. for materials but is often less expensive to install because of lower labor costs. Unfortunately, it’s far more costly to operate and therefore generally makes sense as a supplemental, not primary, heat source. - Source: Internet
• Radiant floor heating systems don’t have filters or ducts that need cleaning on a regular. You don’t have to spend money on venting outdoors as is the case with most HVAC systems. During an inspection, the technician will check for signs of leaks, which could mean that oxygen is finding its way into the system. Leaks can also result in low pressure, which prevents the system from functioning optimally. - Source: Internet
• I was part of a basement radiant installation as an apprentice in 1982. It was the first time I dipped my toes in a radiant floor experience. My job was simple. I had to tie strap the tubing as fast as humanly possible to the 6-inch by 6-inch wire mesh. I then realized my boss and his lead installer did everything as wrong as wrong can be. - Source: Internet
• Your heat source will also factor into your decision. If you have an efficient boiler that’s not too old, it probably can be used to supply heat to your radiant floors. If your boiler has seen better days, choose a high-efficiency, condensing, gas-modulating boiler that is capable of heating your domestic hot water, too. - Source: Internet
• When domestic hot water is used (at a sink or shower etc), water flows out of the top of the tank to the point of use. Cold water replaces the volume of hot water that was used by flowing in at the top of the system, through the heating system, and then into the bottom of the tank . The reasons for this are as follows: - Source: Internet

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