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Whole House Tankless Water Heater


Later years as the technology advanced came along the whole house tankless water heater or on-demand water heater as it is called alternatively. Here the idea is to supply the entire house with hot water on a needed basis only. Large amount of water would be heated as it is needed, be it for a shower or in the kitchen or for the washing machine all at the same time. And the worries or cold running showers were a thing of the past. Now you could fill up the bath tub and not worry to have enough hot water afterward.


The best tankless water heater provides endless hot water as long as there is water and gas or electricity to heat the NRC111 (N-0842MC) water on the go. No storage tank and therefore no ending hot water, and of course with incredible efficiency of 80 plus percent. The cutting edge tankless technology leader Noritz introduced the newest Noritz 842 tankless water heater. It has an unbelievable efficiency of almost 94% achieved with tankless technology. Its exhaust venting is made of PVC, almost no energy is wasted and therefore no need to exhaust it. You may ask who makes the best Tankless Water Heater and the answer would have Noritz at the top of the list as the largest tankless water heater manufacture in the world.


Since tankless water heater has no storage tank it comes in a small package, roughly 5 times smaller than the tank water heater. It can be mounted on a wall outside of the house and free up valuable space in the garage or in some cases turn that look alike pantry where the tank water heater was into a real pantry inside the house.


No Energy wasted with Tankless Water Heater


The tankless water heater doesn’t use energy when there is no need for hot water and has no standby heat loss. The showers can now be truly endless and no worry for the next person wanting to take a shower. The typical shower uses 2.5 gallons of water per minute and a mid size tankless water heater can supply roughly 6 to 7 gallons of hot water per minute. Now here 2 persons can take shower simultaneously or at the same time and still have enough hot water for the washing machine or the kitchen sink. Today’s Tankless water heaters with best tankless technology are very sophisticated computer controlled appliances. They control and keep the water temperature to preset level regardless of water volume and pressure.


In other words the water temperature at the shower head is the same regardless of how much water is being used, a second shower is turned on or third user draws hot water. The gas burner or electric heater modulates the energy, gas or electric to the desired level to achieve the set temperature. All this is possible with modern electronics and having a closed loop circuit with high accuracy.


The leading manufacturer of tankless water heaters are Noritz, Takagi, Rinnai and Navien. They all have refined their products for extreme reliability and durability. Typical tankless water heater lasts 3 times as long as a storage tank water heater with no noticeable degradation in performance or efficiency over time. Tankless water heater models like Noritz NR98 (N-0751), Takagi T-K3 or Navien CR-210 can supply an entire house with continuous hot water and save energy and money.


Tankless Water Heaters are Safe


None of the safety issues of tank water heater applies to tankless water heaters. Their burners come on only when hot water is needed, they don’t have a permanent pilot. The gas burner is electronically ignited and if installed outside it constantly monitors the outside temperature and activates its anti freeze circuitry preventing a pipe freeze when needed. Its electronics also monitors incoming water pressure, flow and regulates outgoing hot water pressure and flow.


The highly efficient burner and heat exchanger achieve high efficiency and save energy. Incoming gas volume and pressure is also monitored and in case of a malfunction the unit shuts itself off and provides diagnostic information. Takagi TK 3 is closely related to Noritz 751 and is also able to supply an entire house with hot water. Another saving aspect of tankless hot water heater is that since you never run out of hot water there is no need to mix the hot water with cold water and therefore the water temperature can be set lower. For example the tank water heater is typically set to 160 to 180 degree F even though the water temperature used for shower is roughly 105 degree F.


This is done to not use so much of the hot water in the storage tank and make the hot water last longer by mixing it with cold water at point of use. With tankless water heater there is no need for this, there is endless hot water and therefore the temperature can be set to 110 degree F and there is no need to mix in as much cold water. That saves energy too because the water is not heated to the higher temperature. Any time cold water is mixed to the hot water that reduces the efficiency indirectly. Tankless water heaters are green products and help reduce the carbon footprint.


Government incentives make Tankless Water Heater more affordable


Thanks to government subsidies, tax credits, tax rebates and sometimes additional local utility rebates tankless water heaters can compete favorably with the old fashion Storage tank water heaters. Their initial cost has come down and the payback on energy savings can be very substantial. According to various statistics 30% to 40% of the energy cost of a typical home is consumed by the water heater. Tankless water heaters can reduce that by more than 50%. Tankless water heaters are also popular for commercial and industrial applications.


Models like Noritz NR98 (N-0751M), Noritz NRC111 (N-0842MC) and Noritz NR111 (N-0931M) can be installed in series to provide almost boiling water. Restaurants, Hair Salons, Gyms and many other commercial businesses can benefit from the energy savings of tankless water heaters in addition to the space savings.


Smaller units like Noritz NR71 (N-0631S) or Takagi T-K3jr are well suited for smaller applications, like apartments or smaller homes. Most units allow you to set the desired temperature via a control panel that can be conveniently installed in the bathroom or any other place. This gives you immediate control of setting the desired water temperature. There may be times that there is a need for higher temperature of 180 degree F for example, this is easy to set through the digital control panel.


This is very useful when filling a SPA or filling a large bath tub. Tankless water heaters are also well suited for vacation homes. Electric Tankless Water Heaters are also highly efficient and can be easily installed where there is enough electrical power. In most areas electricity tends to be expensive compared to natural gas and a natural gas or liquid propane or LP tankless water heater may be more economical. Today's units are among the most compact tankless water heaters ever built and carry the energy star classification.


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