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They need to get people to NOT consider tankless water heaters for as long as they can to protect their own interests. This type of DC-DC converter can be directly connected to a solar panel and power all devices, no matter the voltage they run on. However, the battery voltage reflects the correct storage capacity only when there is no active power supply (the solar panel doesn’t work) and no electric load (no device connected). The better tankless heaters are very easy to work on. They must be installed properly to work well and installing them improperly may result in damage to the tankless heater, poor performance, premature failure or injury to the homeowner. Because product manufacturers have no control over your water system or condition all water heater manufacturers have warranty clauses that state that their product is not covered if damage is caused by aggressive water conditions or hardness. These piping system can not carry more than about 8 - 10 GPM total, including cold water. Noritz even has commercial grade models that can produce up to 13.2 gallons per minute (752 gallons per hour from one unit!). One very large company even went to the trouble of taking "their" new tankless water heater and putting against their tried and true gas fired tank water heaters in a "test".

One thing they did not bother to tell anyone or include in their "short term" test was that had this test been allowed to continue, the hardness would have certainly ruined the tanks and required them to be replaced a lot sooner than the tankless which could simply be cleaned. It is not possible for most people, even plumbers to tell the difference between 1 GPM and 3 GPM without a direct caparison next to it. They will sometimes make claims using the lower quality of the available units to try to show them as "point of use" or call them a "niche product" even eluding to tankless as a fad at times. Even with a drain pan, a tank water heater in an attic is a catastrophe waiting to happen! Compare that to the 12-year average of tank heaters. The largest of these tankless companies, Noritz, has eight models currently available in the US that range from 6.3 GPM to the largest output model available in the world at 13.2GPM. Rennai models produce the same flow rates as the residential Noritz heaters and Takagi also has units in this range. How long have these products been in us in other parts of the world and what is their track record?

They simply set the whole thing up so their original products still have better pricing on the street. Most of these tank companies are still producing papers trying to slow the growth of tankless. It did not take very long for this to get the attention of the big tank companies. They knew that the tank companies would find someone willing to get the quick sale. While this was going on on the surface, what is electric cable they were behind closed doors with the lawyers striking deals with the tankless companies to have units private labeled for them in an effort to slow down their shrinking market share until they can catch up with the technology. Every time a tankless company sells a tankless water heater, the tank companies loose a little bit of their market share. These companies quickly looked into the market. At least for now, they are trying to keep up with the private labeled Japanese units and they are participating in the market. Electric units and home center models do not have this ability.

I would advise avoiding the home center models completely as they lack the technology and BTU's to give you good performance. GPM in the winter months you will be quite happy in a typical 3-1/2 bath or less home. In units that can not control their outlet flow, you will need to "throttle" the flow rate yourself at the outlet. If you are within 1 GPM of this rate you will be happy. Most of these products can be installed in multi-unit installations for high flow rate demands like luxury homes, large shower system with body sprays, locker rooms or hotels. When building a solar power system with battery storage, you need a solar charge controller and a battery. This system is encouraged over utilizing jumper cables to jump-start your auto. Brock Telecom took over support for the GTD-5 digital switches in Canada. When Microtel wound up operations, the Brockville plant then was sold on January 24, 1990 to Nortel then becoming known as Brock Telecom. You then set the temperature you would like and fill with just the hot water.