What is the rating for this unit in regards to in-coming water temperature? (In other words, if the in-coming water temperature is 55F, what will the outgoing water's GPM and constant water temperature be? What is the rating for this unit in regards to in-coming water temperature? (In other words, if the in-coming water temperature is 55F, what will the outgoing water's GPM and constant water... » Read More What is the rating for this unit in regards to in-coming water temperature? (In other words, if the in-coming water temperature is 55F, what will the outgoing water's GPM and constant water temperature be? « Show Less
1063050
Sorry, no details available for incoming vs. outgoing temperatures. With only six gallons available at the set temparture, and the incoming temp 1/2 to 2/3's of the set temp, the electric water heater will only be able to main a consistent temperature for a minute or two. Water heaters this size are primarily used in conjunction with another water heater, or for a location where very little hot water is needed. I would estimate a good hour for the heater to completely heat the entire incoming six gallons to 120 degrees.
1063051
It is not an inline heater. No tank type water heater is designed for that application. Check tank-less heaters, they will give you a solid 20 degree rise, on average, with low levels of consumption.
127872
It can do 2.5-3.0 gallons per minute and add 60F to the temperature of the water. 70F source water becomes a 130F hot water (2.5-3 gallons/minute). If you run the water at higher flow rates you get lower temperature output.Back to the question above regarding a 3700 sq ft home. If you have 1 person living there it probably will work fine. if you have a family of 5 or 6 all getting up around the same time taking 3 showers and using hot water for the sinks it will likely fail miserably. You are completely out of luck if you arre trying to do a bath, or running laundry or dishes at a busy "shower" time. It can do 2.5-3.0 gallons per minute and add 60F to the temperature of the water. 70F source water becomes a 130F hot water (2.5-3 gallons/minute). If you run the water at higher flow rates you get lower temperature output.Back to the question above regarding a 3700 sq ft home. If you have 1 person living there it probably will work fine. if you have a family of 5 or 6 all getting up around the same time taking 3 showers and using hot water for the sinks it will likely fail miserably. You are completely out of luck if you arre trying to do a bath, or running laundry or dishes at... » Read More It can do 2.5-3.0 gallons per minute and add 60F to the temperature of the water. 70F source water becomes a 130F hot water (2.5-3 gallons/minute). If you run the water at higher flow rates you get lower temperature output.Back to the question above regarding a 3700 sq ft home. If you have 1 person living there it probably will work fine. if you have a family of 5 or 6 all getting up around the same time taking 3 showers and using hot water for the sinks it will likely fail miserably. You are completely out of luck if you arre trying to do a bath, or running laundry or dishes at a busy "shower" time. « Show Less
511935
between 2 & 4 mm a second at 34 degree F and a fluid viscosity of 1 part over 16 parts at sea level .oh, I do not know, I have it hooked to the 3/4 inch main to warn me when there is a water cut off, it works.
773463
I had it running this weekend in arrowhead it was fine. The heater was on to the house. I would imagine if it was below 30 the motor may not like it. I would not assume that because the water is moving it will not freeze at a lower temp. But I am sure the motor is not designed for freezing. But it really moves the water.
1020749
The output temperature is dependent on three things. 1)Input temperature2)Gas Knob (Burner Setting)3)Temp Knob (Water Flow)The output temperature but can be lowered quite a bit. Unless your source water is already quite warm I would not expect any issues keeping it below the 85F output. However since the input temperature is what determines the min and max it ultimately depends on your cold water input temp.
1207690
Andrew, I recall that the display will show you what the target temperature is as you are setting it, then it will revert to the actual temperature. I liked this heater a lot, it kept a very steady temp-- then I inadvertently broke it when it didn't get unplugged during a water change-- the glass heated up and it cracked with the fresh water add... total bonehead mistake, I know much better. The material inside got all over and I did lose a couple fish over it and many water changes to resolve. Then I bought an unbreakable. I hadn't broken a heater more than 15 years of keeping fish so I wouldn't let that sway me unless you think it might be an issue. Andrew, I recall that the display will show you what the target temperature is as you are setting it, then it will revert to the actual temperature. I liked this heater a lot, it kept a very steady temp-- then I inadvertently broke it when it didn't get unplugged during a water change-- the glass heated up and it cracked with the fresh water add... total bonehead mistake, I know much better. The material inside got all over and I did lose a couple fish over it and many water changes to resolve. Then I bought an unbreakable. I hadn't broken a heater more than 15 years of keeping fish so I... » Read More Andrew, I recall that the display will show you what the target temperature is as you are setting it, then it will revert to the actual temperature. I liked this heater a lot, it kept a very steady temp-- then I inadvertently broke it when it didn't get unplugged during a water change-- the glass heated up and it cracked with the fresh water add... total bonehead mistake, I know much better. The material inside got all over and I did lose a couple fish over it and many water changes to resolve. Then I bought an unbreakable. I hadn't broken a heater more than 15 years of keeping fish so I wouldn't let that sway me unless you think it might be an issue. « Show Less
1676732
Are you sure your cold water temperature is 100 degrees? Average is around 55 degrees.
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.
1105985
From my experience this is not a fixed value. If you set the flow switch at 0.5 GPM and the temperature at max, when you are flowing at a rate just above the 0.5 GPM you can a 90 Deg. F rise per the book. If you increase the flow rate above 0.5 Deg. F the temperature rise will decrease below 90 Deg. F. I have discovered that if I am using only the hot water and decrease the flow rate the temperature goes up. Note: 1 BUT will raise 1 pound of water 1 Deg. F; 1 gal = 8.34 pounds of water. Good luck with your unit, so times getting the proper balance between hot and cold water is a challenge. From my experience this is not a fixed value. If you set the flow switch at 0.5 GPM and the temperature at max, when you are flowing at a rate just above the 0.5 GPM you can a 90 Deg. F rise per the book. If you increase the flow rate above 0.5 Deg. F the temperature rise will decrease below 90 Deg. F. I have discovered that if I am using only the hot water and decrease the flow rate the temperature goes up. Note: 1 BUT will raise 1 pound of water 1 Deg. F; 1 gal = 8.34 pounds of water. Good luck with your unit, so times getting the proper balance between hot and cold water is a challenge.
1728751
my husband says it is variable..we are still learning about ours..look up on line you will see maximum flow rate based on temp of water coming in and output water temperature
1462087
With temperatures in the 33°F to 35°F range, mine heats the water near the heater to 50°F while running at a 75% duty cycle. I infer from that data that the heater will turn on at slightly below 50°F water temperature and turn off at slightly above 50°F water temperature.
1892915
There is no readout of actual water temperature. The only adjustment to Temperature is a "Mode" button that allows you to select "Normal" or "E-C" (economic). We usually just keep it in "Normal". The cold water stays adequately cold. And the hot water gets really hot fast. We have had our unit since January 2012, and we are very pleased with it. It runs very quiet. The spouts allow a flow stream that is larger than another brand that we had before it. Hope that helps.
2263834
To my knowledge, there is no temperature rating on this. It is intended for filling aquariums and so I would assume it is meant to handle water from 50 - 100 degrees f.
1423245
This has its own thermostat. If suppy water temperature higher than the target temperature than it will stay off. I don't know how well it maintain the targeted temperature. I think it is fine, because I don't hear any complain from my tenant both winter in NY (2014 & 2015).
650274
The hot water that it outputs depends on the hot water that is needed. If one is taking a shower at 2 GPM, he will get 2 GPM out of the water heater, as long as the maximal heating capacity is not reached. The hotter the input water, the higher the maximum flow rate will be (up to the capacity of the pipes). The question is linked with the minimal flow rate of 0.26 GPM this unit has. Below this, the water heater shuts off.1. What happens if I need 1 GPM at 120F and that my input is at 115F. Will it shut off or will it output water above 120F ? 2. Shouldn't the minimal flow rate be expressed based on the temperature rise (0.26GPM at 50 degrees rise, 0.52 GPM at 25 degrees rise, 2.6 GPM at 5 degrees rise) ? The hot water that it outputs depends on the hot water that is needed. If one is taking a shower at 2 GPM, he will get 2 GPM out of the water heater, as long as the maximal heating capacity is not reached. The hotter the input water, the higher the maximum flow rate will be (up to the capacity of the pipes). The question is linked with the minimal flow rate of 0.26 GPM this unit has. Below this, the water heater shuts off.1. What happens if I need 1 GPM at 120F and that my input is at 115F. Will it shut off or will it output water above 120F ? 2. Shouldn't the minimal flow... » Read More The hot water that it outputs depends on the hot water that is needed. If one is taking a shower at 2 GPM, he will get 2 GPM out of the water heater, as long as the maximal heating capacity is not reached. The hotter the input water, the higher the maximum flow rate will be (up to the capacity of the pipes). The question is linked with the minimal flow rate of 0.26 GPM this unit has. Below this, the water heater shuts off.1. What happens if I need 1 GPM at 120F and that my input is at 115F. Will it shut off or will it output water above 120F ? 2. Shouldn't the minimal flow rate be expressed based on the temperature rise (0.26GPM at 50 degrees rise, 0.52 GPM at 25 degrees rise, 2.6 GPM at 5 degrees rise) ? « Show Less
444117
I am seeing a maximum of approximately 50*f rise in temperature above the incoming water. My incoming water is 58* and and I get to about 108*f with the temperature dial all the way to high and with the water slowed to its minimum. This little heater works great.
1040205
I have this chiller cooling a 55g reef with a 30g sump. I run 2 150w metal halides and it keeps the tank within a two degree swing between 76-78 degrees. Before I added I was creeping over 80-81 with fans blowing on the water surface.