I thought that 4 gals per minute meant up to 4 gals per minute. It mean at least 4 gallons a minute. If you turn down the hot water, The water heater shut off. If you have water saving faucets it wont draw enough water to turn the system on. It's all or nothing. You can't add cold water to the shower, It shut the water heater off. The book says if you have this problem. Buy one with lower gals per minute. After I already bought and installed this one. They must think we are all made of money. I do not recommend this unit. You can not fine tune the temp.
I have interest in your products for installing in my house when my 50 gallon heater goes bad. The unit I bought I am using it as a above ground swing pool heater. I used a shallow well pump (55 PSI) to pump off the bottom of the pool cool water run it through the heater and now no cold spots in the pool. out putting 126 degree heat which I monitor before any one enters the pool.. There is no doubt I will be installing one in my house soon. The time I ordered to delivery was very quick 2 days.
We returned out order beacuse it wouldnt work for what we wanted after we chatted with the online. We had to pay for return which was over 50 $ plus you are taking out 15% . we are not happy and will not shop with you again. And we haven't received an email stating that the return was received. Which should of been last Thursday
Eccotemp FVI12-LP 4.0 GPM Indoor LP Propane Tankless Water Heater Manufacturer RFB