Are the thermostats accurate? My marathon water heater is off by 15 -20 degrees.
291105
My marathon heater was and still is accurate. One thing I will add is once you feel the water start to heat up it will very hot quickly. Therefore, turn down the hot water as soon as the starts to heat up.
1765668
I keep mine set at about 30 degrees. I have a thermometer on the wall and when I am not in my shop I turn the thermostat down to 30. If I turn it down more the heater will not run at all.
1228017
Most obvious thing: check the circuit breaker. It is probably not the same one that runs the pump. If you are not familiar with electrical troubleshooting, get professional help. Otherwise, make sure that the heater is getting electricity. If not, get professional help. Otherwise, shut the power off and check for continuity of each component. I'd start with the heating elements. Use your phone and take a picture of the wires on the elements. Remove the wires from the elements and test with an ohmmeter (if available). Each should read about 10 ohms. If either element is open, it will need to be replaced. Replace the wires. Next check the thermostat. Take a picture and remove the wires. Assuming the water temperature is low, the thermostat should be closed and your ohmmeter reading near zero. If it's open, it will need to be replaced. Replace the wires. Next, check the high temperature cut off. Take a picture and remove the wires. Like the thermostat, it should be closed. If it's open, it will need to be replaced. Replace the wires. If it still doesn't work, get professional help. Hope this helps, ..j
1352279
I'm guessing that you are starting with really cold water. The heater can only raise the temperature up just so much - 40-50 degrees, I don't remember. The trick is to discharge the heated water into your source bucket which heats it up and pretty quick you'll have water coming out of the discharge end way hotter than you'd want to shower in. Hope this helps.
621538
I have had mine about 9 months and works fine, I have it set at 88, House temperature is 72 degrees. I like the digital display, no guessing how much it was changed. I have not had a water bed heater last longer than 5 years. I like the lower output dons not make a hot spot over the heater, next time I will use two so one does not need to work as hard. I have had a water bed since the 70s and we can not use a regular matters, Max98327
288297
You should not have any issues with water temperature, however like wholesale water heaters answered. You will see a flow rate drop, the truth is the flow rate that Navien claims is at a 30 deg rise. That means if the water coming into your home is 50 deg and you want 120 deg water you will only get 5.5 gpm. That is still enough to run2 showers at a reasonable flow rate. Just don't be fooled they don't advertise that part. For the most part these units are very nice.
652330
The temp range is maybe 70F-140F degrees on the thermostat ... There is NO an on/off setting. This unit is in my attic and I haven't been up there in a while-- so those temp ranges are just a guess. Thanks!
862659
I had some trouble when it was -20F. the heater that comes with the unit is adjustable. It gets very warm/ hot when you turn it all the way hot. The water still freezes over some on the top.
862656
We just bought a new MK32E for our daughter's barn. The heater on mine was attached directly to the underside of the water pan while this newest one has the heater sitting away from the water pan, suspended from a small arm. Ours froze up last year at -25 degrees but increasing the thermostat setting seemed to solve the issue. With the heater away from the pan and at -40 a 500 watt heater might be taxed beyond its capacity. I used to put a 100 watt light bulb inside our unit in the winter just to be sure it did not freeze during those few sub zero days.
509229
Speaking recently with the manufacturer of the internal components, Gecko-Alliance, they indicated that it could even be slower than 3 degrees per hour, depending upon the conditions. Definitely keep the lid on it as much as possible during the heating. We just got ours up and running last week, and the starting water temp was 51 and outdoor temps were below freezing. It took about 24 hours to get it up to 104.
1210287
No, but when turned all the way down even in 20 degree temperatures, the heater does not turn on.
454332
Do you thermometer? at what temperature is your water?. Is because you have the water too hot, the heater has thermometer so it turn on when is needed.
1738422
I had this same problem, returned them as defective. I've never had a thermostat on any type of heating or cooling system perform this way.
2161860
No, but turning down the thermostat on your water heater would do that, as well as save you money on heating your water higher than you need it to be heated. Just search on the internet, "how to turn water heater temperature down"
2255557
I have a couple of these in some 10 gallons. Make sure your heater and thermometer are not too close. When the heater coils turn on they make the surrounding water rather warm. You may have experienced a 80 reading when the pilot light was on and coils were hot.
1963158
Not really but I believe it is because I do not have a pump to help power the water pressure. The bathroom closest to the water heater receives a constant temperature but the second bathroom has fluctuations in the temperature.
454330
The LED should turn off when the temperature is reached. Turn the temp all the way down, then turn it all the way up. Once you pass the temp of the water it will turn the red LED on. Do you have a accurate thermometer to check your water? If it is at 85 then the unit is working. If not then you might have to return it since the calibration is off. Mine is set to 80 and it work very well.