Stiebel Eltron DHC 4-2 Electric Tankless Water Heater, 240V Review

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(More customer reviews)Pretty ok, I ended up using this one for hot tap water to the kitchen and as a pre-heater for a 'CORAL http://www.amazon.com/gp/product/B0026382Z4 shower head. Works good for a shower if the water is not too cold in the supply line. So pre heat it first and all is good, right? Right, works good but needs adjusting through the seasons. I am pretty sure I am saving on the electric bill. A solar pre-heater may save me more and provide more supply temp stability. Electricity is funny stuff- If you don't know what your doing....get someone who does, wire gauges and breakers are specific for a reason.

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Stiebel Eltron DHC 4-2 Electric Tankless Water HeaterThe Stiebel Eltron DHC 4-2 Electric Tankless Water Heater is designed for installation at the point of use. They heat water instantaneously as it flows through the unit. Stand-by losses are completely eliminated. The heating elements are controlled by a flow switch and by an exclusive scald-guard thermostat, which keeps the water temperature within safe limits at all times. In addition, the DHC water heaters are equipped with a safety high-limit with manual reset. The rugged all copper design ensures many years of reliable service. The models DHC 3-1, DHC 3-2 and DHC 4-2 are shipped with 0.5 GPM pressure compensating flow reducer/aerators that fit on most faucets. Flow controls and faucet aerators are highly recommended in conjunction with tankless water heaters.Stiebel Eltron DHC 4-2 Electric Tankless Water Heater Features: Up to 50% less electric consumption compared to storage type heaters, hot water instantly, with exclusive built-in scald guard thermostat, fits anywhere due to its lower installation cost in comparison to storage type water heaters. No need for circulating pumps, available in many different KW sizes - Available for 120V, 208V and 240. Stiebel Eltron DHC 4-2 Electric Tankless Water Heater Specifications:; Phase1, 208/240V, 2.9/3.8 KiloWatts, 14/16 Amps; Minimum required circuit breaker size 20 Amps; Recommended wire size AWG Copper 12; Minimum water flow to activate unit 0.42 GPM/1.6 l/min.; Pressure loss in unit 2.88 PSI/0.23 bar; Maximum working pressure 125 PSI/10 bar; Tested to pressure 250 PSI/20 bar; Water connections 1/2' NPT; Dimensions: H 14-3/16' x W 7-7/8' x D 4-1/8'Stiebel EltronDHC 4-2Electric Point of Use Tankless Water Heaters

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Stiebel Eltron DHC-E 10 Electric Tankless Water Heater Review

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(More customer reviews)I've put up for years with having to run the hot water at my kitchen sink for 3 minutes before I got hot water, which was actually only warm. I live in a house where the water heater, powered by propane, is about 40 feet from the kitchen. I installed the DHCE-10 in a weekend myself, it fit on the back wall right under the sink. The hardest part was running the 40 amp circuit over a 60 foot run for the power. Plumbing wasn't bad, this unit uses the cold water for the inlet, I turned off the hot water valve under the sink and capped it off and teed into the cold water line. The outlet side of the heater is teed, one to the hot water inlet on the faucet, one to the dishwasher.
Before having the DHCE-10 I would have to keep the propane heater turned almost as high as it would go so the water would be hot at the kitchen sink. There was a fair amount of temperature drop over a 40 foot run in a slab foundation. After powering up the DHCE-10, I had 120 degree water at my kitchen sink in 3 seconds, amazing. The first thing I did was turn my propane heater down to low, just warm enough for showers in the baths, which are in close proximity to the propane heater. Another benefit is my dishwasher is now cleaning the dishes more effectively with 120 degree water which is what is recommended.
As for the heater itself, it is well constructed, compact, simple and easy to set. There is a dial on the front which adjusts the water temperature from off to 125 degrees. The unit is self limiting to a max of 125. The ambient temperature of the water going into the unit is 50 degrees, (I live in the South, test done in winter), my flow rate is 1.3 gallons per minute at my sink. The unit heats the water instantly to 120 degrees. The unit only consumes power when the water is turned on, there is a flow detection switch that powers up the unit when water flows through it. It turns off instantly when the water flow stops. Can't get any more efficient than that. If you live in an area where you're ambient water temperature is lower, it may be necessary to reduce the flow at the faucet to achieve the desired outlet temperature, or install one of Stiebel Eltron's larger or smaller units, they have a variety of sizes depending on your needs. The hot water temperature is relative to your flow rate and the ambient temperature of your cold water. The Stiebel Eltron web site has graphs and recommendations for your area.
I've been using the unit for three months now, I've monitored my propane usage, it has dropped dramatically. Prior to installing the unit we would turn on the hot water at the sink for washing hands and rinsing dishes, it usually didn't run long enough to actually get any hot water but it did run long enough to cause the propane heater to cycle on to reheat the water in the tank. I've seen no appreciable rise in my electric bill so far. I would expect the unit to pay for itself over it's lifespan.
I highly recommend this unit, I chose it over competitive units for it's warranty, quality and reputation. All copper internal components, quality switches and connectors. If I were to ever build a house I would install these units in each bath and the kitchen sink instead of having a tank style heater that cycles on and off whether or not you use any hot water. I would prefer this style unit over a whole house tankless heater also, as these install right at or near the the point of use eliminating the long runs resulting in temperature drops.

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Bosch 1000P NG AquaStar 2-3/5 GPM Indoor Tankless Gas Water Heater Review

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(More customer reviews)Just self-installed my 1000 P NG water heater I got from Amazon (1-week shipping was free). Took me a day (soldering copper pipe is not very easy for me). I replaced a 40-gallon tank unit. I live in a small beach house in Southern Califoria and needed to replace my 1997 tank unit and since the Bosch was actually less than a tank unit and I could gain much needed floor space, I gave it a try. After replacing my existing 3" venting with 4" double-wall, the total insatlled price was a little more than if I had bought another tank unit. This unit has a "234 therms/year" government rating versus "263" for the tank unit it replaced (so I don't expect to save much on my gas bill). I had researched tank-less water heaters and this Bosch unit does not require stainless steel venting which saves a lot of money over galvanized. As with all units I have read about, it's limitation is that you must use at least 1/2 GPM of hot water in order to get the unit to fire-up (no more trickle of hot water during shaving). The quality of the unit was OK-the drip pan must be user installed and requires modification to work, and the front cover was bent somewhat and makes adjustements in gas flow difficult. Read the users manual on-line before buying and you won't have any surprises. I operate the unit at it's lowest water flow setting (the right-hand knob) since this also means that the unit will fire at the lowest water flowrate. I also operate it at its lowest gas flow setting and the water is still REALLY hot, so I am not sure what all of the complaints are out there about luke warm water. Bosch states that every 2+ years, preventative maintenance is required (something not required with a tank unit), so keep that in mind before buying.
I'll right another review after a year or so, or, earlier if I have problems.

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Electric 220v Tankless Water Heater Shower Head Review

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(More customer reviews)install was not so easy, had to convert fitting, dribble of hot water...then the whole thing broke within 3 months. Shorted out....would not buy again....

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