dannyballs said:
No. Power goes out, I'm screwed anyway (heat, etc.). That said, I live in town and if our power does go out it is generally only for, at most, a couple of hours.
Tankless Water Heaters
- Thread starter dannyballs
- Start date
No. Power goes out, I'm screwed anyway (heat, etc.). That said, I live in town and if our power does go out it is generally only for, at most, a couple of hours.
Mantaray said:
Yeah, here in DC there seems to be this big stupid push for everything electric. When it comes to heating, cooking, and hot water, gas is far, far, far superior in terms of cost, efficiency, and consumer benefit.
How? Most already plug into the wall. It doesn't use the power to heat the water, just ignite the gas and control the unit. Bosch's biggest houshold unit uses 40 mA when idle and <2.5A (~300W) when operational (120V). A standard UPS could easily handle that load at least long enough to finish a shower with hot water.knewsom said:
Edit: The power requirements are the same for all of Bosch's pilot-less tankless water heaters.
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Aha! I thought you were referring to an electric tankless water heater, and was being humorously glib... Sure, a gas one would probably run off a 9 volt, let alone a UPS!
I was looking to know if there are systems with a battery to ignite the spark in the event the 120V feed fails. The battery backup system is a good idea.
dannyballs said:
Dunno about that one... The unit I had in China was a manual one!
I turned the dial and the piezo would ignite it.
knewsom said:
we tried to convince him that a single gas fired tankless would be more than adequate for the buildings needs, but he would have none of it. one of those clients that knows just enough to be stubborn about a choice they make.
They do make them that have a pilot light just like normal tanked water heaters. It works without power. Its not quite the same, but if you have frequent power outages...dannyballs said:
Here in Japan tankless heaters are all they have. I also have a Noritz and I cant imagine going back stateside and having one of those big energy wasting tanks. Im supposing that the ones over here are a little more advanced than the ones back there as I dont have to vent mine, it is mounted on the outside of the house. I have about a 10-15 second waiting time for the hot water to get at temp. I will definitely get one when I return to the states. I would highly recommend one of these to anyone.
They are costly, and it is required from the manufacturer to use their vent systems for warranty purposes and they also require a 3/4 gas line dedicated from the meter. Also, out here in California where you are forced to cut back on EVERYTHING, if your water restricting shower head is any distance from the heater, you need to have recirc pump and line in order to move enough water to fire the heater. Good luck on what you decide, but make sure you cover your warranty in case of problems down the line.