![]() ![]() It supplies hot water to the radiant heat loop and indirectly heats a hot water storage tank. Primary source of heat is the wood boiler. I would tie the wood boiler in with a high efficiency propane/NG boiler. this isn't a good option for the average home owner as we don't use enough water to make it worth while. his cooling bill dropped substantially after the retrofit. we built a manifold system that would run the water from one of the wells through the house before it went out to water plants. On another job the customer has a large green house operation on the property and radiant heat in the house. heating and cooling bills were almost nonexistent. We installed a system like this in a rather large shop and it worked very well. by cooling the structure down from the core it'll make it much easier for the traditional air conditioner to do it's job. this has the ability to dramatically lower the temperature in the house at a very low cost. in short you would be circulating the cool water through the radiant system. With a simple valve system you can shut the water off to the furnace and open up the circulation to a geothermal loop. Now let's look at making the geothermal work to cool the house: going this way you can still have what looks like a traditional hot water heater, offering the benefit of extra water storage! this method works with electric and gas hot water heaters. as long as you're running the furnace you have hot water for the house. the potable water is heated by the hot water in the copper pipe. water from the furnace is a sealed system and in this case will make a trip through the water heater before continuing on to the floors. it's a hot water heater that has a coil of copper pipe inside. (you will need that stuff for traditional cold air though) radiant heats everything in the house with what is actually a very low temperature water.Īs a way to get more use from this hot water and further save on the energy bill / consumption you can use a combi core hot water heater. for starters you don't need any kind of duct work, fans / blowers, air handlers, etc. Radiant heat will be the best form of whole house heat you will find. ![]() Geothermal for radiant floor heating cost how to#Now that we have an excellent heat source covered let's get into how to best use this heat: other than that you're good to go as long as you have something to burn. If you're running an outdoor furnace you will need to maintain enough electricity to run the circulation pumps. Then if you use a well-placed PEX manifold with homeruns to the faucets you get hot water fast throughout the house, and your water heater gets an extra efficiency boost from the "free" heating from the heat pump. Run the hot water through the heat pump, then to the on-demand water heater. There are exceptions, such as some of the new commercial variable refrigerant flow mini-split systems from Mitsubishi that continue to heat down to -10 or so at least(according to the sales manager I spoke with).ĮTA: If he gets a geothermal heat pump, what you suggested is perfect. Again, different brands and models behave differently so the numbers I've mentioned may vary. It will make your compressors last longer and save you money. You should always use an outside air temperature sensor to turn off your air source heat pump at around 30* or so and use your backup electrical(or other) heat. They start losing noticeable heating efficiency around 40 or 50 degrees(approximately, different brands/models perform differently), and it gets worse as the temperature drops. a gas furnace, you are dealing with a sizing issue. If your geothermal heat pump can't handle the cold temperatures vs. If the ground loop is a deep, vertical well, it will work regardless of outside air temperature. If the system is using a shallow horizontal system in a climate that stays very cold for a long winter, there might be some issues due to the ground loop not being far enough away from surface temperatures. Geothermal means it is exchanging heat with the ground, not the freezing air. the wife and i are going to be buying a new house(modular) this summer and just cant justify the $20k+ added onto the cost of the house.Ī geothermal heat pump will do just fine at 15* and well below. of course where you live, and me for that fact you would need an add on supplement heat source because once the temp drops to 15*(might be 10*) or so the GT unit alone just wont cut it. If i was going to do geothermal for HVAC i would get rid of the conventional water heater and go with either a POU(point of use) or a whole house on demand LPG water heater. ![]()
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