Question for the plumbers out there.

[FLASH_OUTDOORS]

I'm setting up an on-demand pluming system at the deer lease. We are using a 5liter tankless propane water heater and in order to maintain the heat of the hot water the volume to the faucet need to remain relatively low. Are there faucets designed to operate efficiently on low pressure/volume? I'm trying to maintain a good stream or spray with the faucet only open a little bit. I'm not sure y'all understand the beautiful picture I'm trying to paint. Lol. I'm thinking I will need to go with a spray head style.

[Smithwr]

I think i understand although im not a plumber. A friend did the same thing at his lease. We did two things to help, 1-cranked the thermostat way up on the heater(careful around little kids) and 2-we used a shower head from an RV place(their designed to run as effecient as possible due to limited water storage). Regular faucet in the sink.

[FLASH_OUTDOORS]

I think i understand although im not a plumber. A friend did the same thing at his lease. We did two things to help, 1-cranked the thermostat way up on the heater(careful around little kids) and 2-we used a shower head from an RV place(their designed to run as effecient as possible due to limited water storage). Regular faucet in the sink.

A regular faucet will allow the water to flow too fast out of the heater and the heater won't be able to keep up

[perow]

Can you just restrict the flow at the valve on the line coming into the faucet by just not opening it all the way

[cosmiccowboy]

Most specs I have seen say a 5 liter propane tankless heater can produce 1-1.4 gpm of hot water. If you match that to a low flow shower head (like the link I provided) it should probably work. Maybe not super hot, but not ambient temp either.

www.conservationwarehouse.com/niagaraemshn2912ch.html

[Smithwr]

A regular faucet will allow the water to flow too fast out of the heater and the heater won't be able to keep up

If you turn the thermostat way up you dont need as much scalding water to get hot water

[cosmiccowboy]

It's all about matching the gpm production of your unit to the gpm flow of the shower head. If you try to use a valve to cut the flow to a high flow shower head the shower head will dribble instead of spray.

[Horitexan]

I just had a conversation about those water heaters with the plumber on our new house - he recommended against them because of our hard water. I wanted to use one for the upstairs. Just letting you know. Might want to go with a traditional heater if you have hard water.

[TXBlkCld]

I'm not aware of any tankless on the market that'll register and fire with less than a .4-.5 gpm. The lowest registering one I'm aware of is the NPE series by Navien. Most all others on the market require a minimum of .6-.9 before they register to fire. Maybe Todd will pipe in and inform us otherwise.

[FLASH_OUTDOORS]

I'm not aware of any tankless on the market that'll register and fire with less than a .4-.5 gpm. The lowest registering one I'm aware of is the NPE series by Navien. Most all others on the market require a minimum of .6-.9 before they register to fire. Maybe Todd will pipe in and inform us otherwise.

So after reading all the comments I planned on putting a .5gpm aerator on my faucet. Judging from what you're saying I may be restricting it too much and the burner might not kick on. Is that correct?

[TXBlkCld]

So after reading all the comments I planned on putting a .5gpm aerator on my faucet. Judging from what you're saying I may be restricting it too much and the burner might not kick on. Is that correct?

That is absolutely correct.

[FLASH_OUTDOORS]

Question for the plumbers out there.

I looked at the instruction and it stated the minimum flow is .5gpm so I will get the .5gpm restricted aerator for max heat.

[FLASH_OUTDOORS]

Thanks for all the help guys