Do you need two of these for a tankless water heater? Or just one? I bought the ecosmart Eco27 tankless water heater.
214692
You jut need one, which goes on to the cold water flow pipe into the tankless water heater.
214693
Just one in the cold water pipe that goes into the tank. Depending on how much use, replace every 4-6 months.
214694
Only one is needed, but I talked with my friend who installed the exact same model 10 years ago and he didn't install a filter. He never has had any problems, so didn't install mine either and I haven't noticed any build-up.
214695
Depends on your ppm water content, my post whole house water filtration system has 50 to 65 ppm (parts per million) any given day. One AP430SS is plenty for my tankless water heater. I do not know how long it is going to last yet. But, so far so good. James
2072655
Yes you need to purchase two, they are the same filters that BMW has, but much cheaper. I have bought them before, great deal on these.
2267828
I'm reading that there is only ONE per order. So if you need two, ya gotta order a second unit.
781074
just one, run the timers in series. as long as both timers have the place to connect sensor. some timers don't have that option.
2197689
Depends on the heater but why? A tankless water heater only heats on demand so you don't waste eergy heating water that is not being used right away. You can possibly hook it up if you have an overflow output on the unit but you can really screw it up if you do the install wrong.
547158
Yes you do one for each valve you have now easy to install and works great I only have one on my black tank I will get 2 more next summer and do my other 2 tanks
1614305
You don't need buy two. use power strip,you can use more than one products. Remember power total do not over 1000W
1357167
I installed my Eco8 as a point of use water heater for a washing machine. I unless the supply water temp is 60 degrees or higher AND you are using very low flow shower heads I don't think the Eco 8 would keep up with the demand of two simultaneous showers. I would strongle advise a more powerful model.
872001
No but you will need only one if you have a garbage disposal and they're pretty inexpensive at your hardware store. I paid $10.
127870
If you don't use everything all at once. Mine runs one bath, kitchen and laundry, I have a small unit for second bath. One thing to check out first would be the electrical power required and it's availability. Requires three double 40 amp breakers and heavier gauge wire to carry the power. I took out a 40 gallon electric water heater and it has saved me about $60 a month so I would not go back. As energy prices get higher I save more. As with everything some common sense in using it should be observed, I love mine.
547155
You need one for each tank. Ie 1 for the black tank and 1 for the gray tank. You will need some reducer pieces to put it on the gray tank.
2211228
I only use one. That's my preference. Depends on what environment you plan to use it. I'd would purchase one. Determine if it meets your need thus, you may or may not want another.
350481
Why would you need two, unless they each run separate 220v units? Did you compare the wattage demand of your heaters with the capacity of the thermostat? I matched mine to the amperage rating of my baseboard heaters, and it has been working just fine for almost two years now. You are using this 220v device with a 220v application, right? Most fans are 110v. It's possible to pull that out of a 220v circuit depending on what wire service exists (black, red, white and ground wires of adequate gauge are needed), but these things need to be wired correctly and carefully. Otherwise, it may do more than melt. Why would you need two, unless they each run separate 220v units? Did you compare the wattage demand of your heaters with the capacity of the thermostat? I matched mine to the amperage rating of my baseboard heaters, and it has been working just fine for almost two years now. You are using this 220v device with a 220v application, right? Most fans are 110v. It's possible to pull that out of a 220v circuit depending on what wire service exists (black, red, white and ground wires of adequate gauge are needed), but these things need to be wired correctly and carefully. Otherwise, it may do... » Read More Why would you need two, unless they each run separate 220v units? Did you compare the wattage demand of your heaters with the capacity of the thermostat? I matched mine to the amperage rating of my baseboard heaters, and it has been working just fine for almost two years now. You are using this 220v device with a 220v application, right? Most fans are 110v. It's possible to pull that out of a 220v circuit depending on what wire service exists (black, red, white and ground wires of adequate gauge are needed), but these things need to be wired correctly and carefully. Otherwise, it may do more than melt. « Show Less
1406058
I have a high efficiency water boiler with a tankless water heater system. I also had only two wires. So far these have worked perfectly. Just so you know, they do make an audible click when they go on and off. Doesn't bother us, but some don't like it.
495219
Depends on what kind of house. We have multiple valves under sinks that are far down the line from the hot water heater, but we have a two-story house with the hot water heater in the central core. If you have a ranch house, it's probably unnecessary to have more than one valve.
2139571
You probably want two if you have allergies. Otherwise one should be ample if you leave it running.
2095155
there are 2 aspects: electrical and plumbing. If you do not have the right guage wiring and breaker size then this electrical work has to be done. In addition you need a shutoff switch near the unit in case power has to be turned off to the unit. For the plumbing if the tankless is replacing and existing hot water heater that was in the same area, then the plumbing connections are more straight forward as described in the installation booklet. If the tankless is in a new location then there is a bunch of plumbing required. The installation booklet is pretty explicit on what is need and what connections are needed to the tankless. s there are 2 aspects: electrical and plumbing. If you do not have the right guage wiring and breaker size then this electrical work has to be done. In addition you need a shutoff switch near the unit in case power has to be turned off to the unit. For the plumbing if the tankless is replacing and existing hot water heater that was in the same area, then the plumbing connections are more straight forward as described in the installation booklet. If the tankless is in a new location then there is a bunch of plumbing required. The installation booklet is pretty explicit on what is need and what... » Read More there are 2 aspects: electrical and plumbing. If you do not have the right guage wiring and breaker size then this electrical work has to be done. In addition you need a shutoff switch near the unit in case power has to be turned off to the unit. For the plumbing if the tankless is replacing and existing hot water heater that was in the same area, then the plumbing connections are more straight forward as described in the installation booklet. If the tankless is in a new location then there is a bunch of plumbing required. The installation booklet is pretty explicit on what is need and what connections are needed to the tankless. s « Show Less