I selected the Bosch Aquastar 1600H for several reasons.It was the correct size for my 3 bed 1 bath ranch home where all of the plumbing is centrally located.I liked the fact that there was no standing pilot light OR plug for an igniter on the system.But the biggest selling point was that it used standard 4" Class B vent pipe for the flue.Most of the tankless water heaters that cost $900 to $2000 stab you in the pocket book again by using 3" stainless steel flue pipe that costs a fortune.In fact, a lot of them have optional kits that start around $300 for the basic pieces with you needing to buy additional pieces just to install you heater.Now, the negative.First off, understand that I am a contractor by profession and that while installing this water heater was pretty straight forward; diagnosing issues with it is a whole different ball of wax.This was the first time that I had ever installed a tankless water heater and I was putting it in my own home.After changing my plumbing lines around, switching out the black pipe to ¾" for the gas line, running a new flue and hooking everything up, I was having problems getting it to function correctly.More specifically, the heater would not heat the water to a desired temperature and if the furnace or the stove/oven was running, the temperature would drop even more.After checking the manual and getting online to find out how to make a manometer ([...]), I found that the natural gas pressure was set incorrectly for my house.It was measuring around 5 WC (inches water column) and while it didn't really come out and say it, I found that this heater works best on at least 6 ½ WC.While the pressure was fine for my stove, the furnace and my old water heater, it just wasn't enough for this new water heater.The manual says to have the gas company come out to test and adjust the pressure, however, I just did it myself and set it to 7 ¼ WC.I will say that while this heater saves natural gas by not constantly heating the water in a tank, it does use A LOT more to heat your water when it is in demand.Another thing I found out, if installing this water heater in a climate where the temperature can drop below freezing, MAKE SURE that you install it in an area where there is good air flow with a decent ambient temperature.The reason being is that tankless water heaters like this Bosch Aquastar work on a capillary system to heat the water.If cold air comes down the flue, it can freeze the water in the heat exchanger and bust the pipes within it or just not function as your water line for your hot water will not flow.
However, after that, I will say that I have continuously enjoyed an endless supply of hot water.With two teenagers in the house, I can tell you that it used to be frustrating to have to wait an hour to take a shower if they had used the shower beforehand.This is the reason that I went with a tankless water heater to begin with.I also am happy to report that my gas bill was and has continued to be cut in HALF.I have been using this system for 7 months now and I can't wait to see my bills for the winter.
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Product Description:
This is a factory reconditioned tankless water heater. Reconditioned generally means that the tankless water heater has been returned to the manufacturer, who brings the tankless water heater back to like new condition. Some tankless water heaters may contain cosmetic blemishes. Includes 1600H (Hydro) Natural Gas Tankless Water Heater - 1600H-NG-RE
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