Highest Rated Review by the Community
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Apr 26 '05
Pros: Looks great and well built.
Cons: Tankless heater did not serve our needs very well.
Summary: I used to have two 40 gallon hot water tanks that I could run in parallel or series, and normally ran them in series with the first one as a warming tank. One of them rusted out November 2004 and needed to be replaced. A friend told me about ...
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Nov 19 '11
Pros: Just a little bigger than a bread box.
Cons: Everything else. Worthless POS. Customer service, mostly non-exixtent, otherwise rude.
Summary: Purchased Bosch 250SX 4 years ago to put in attic to free up space in laundry room for remodel. I paid about $1000 for the unit and then another $500 in expensive stainless steel vent piping and rain cap. Unit worked well at first until first ...
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Jan 02 '11
Pros: Worked well for 3 years...
Cons: Expensive to runsucks a lot of gasPray it doesn't fail... you're screwed
Summary: Bosch Tankless Hot Water Heater 250SXI would like to title this as "Left on the side of the road... for dead by Bosch Service"3 years into a 12 year warranty, with a catastrophic failure of the heat exchanger, I'm standing in a pool of water ...
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Oct 18 '10
Pros: Fairly easy to install. Saves space.
Cons: Service expensive. Unreliable.
Summary: This tankless water heater was purchased when I added on to my home and replaced the old laundry room with a new one as part of the project. I bought the Bosch disregarding some marginal reviews of the product I found online, and installed it myself, ...
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Jul 13 '10
Pros: space saving and endless hot water
Cons: over priced, unreliably equipment, no service parts locally.
Summary: I bought the Aquastar 250SX in 2005 I have had to remove it twice and put my 40 gallon electric water back in while waiting on parts. The first time was about a year ago when the overheat cutoff fuse went out. The water heater has never worked right ...
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Jan 13 '10
Pros: Takes up less space, aren't heating water for storage, and you may get a rebate
Cons: Costs for installing, limited plumbers, cold water when it errors, water temperature fluctuates.
Summary: We purchased a Bosch Aqua Star 250sx tankless water heater when we finished our basement two years ago. We purchased this model as it is suppose to handle multiple appliances at one time. We had several reasons in mind for a tank less water ...
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Oct 20 '08
Pros: Small installation footprint up on wall. Should save some money in natural gas bills. Cons: -Very expensive to purchase
-Water waster
-Poor customer support.
Summary: I bought and received the Bosch from Amazon and didn't get what I bargained for. Prerequisite projects included: 1- installing a new oversized gas line ($350) 2- z-flex thimbles and wall venting for the Bosch exhaust gases($500) 3- ...
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Aug 01 '08
Pros: Small size
Cons: Doesn't work with shower filters. Tech support is understaffed. Expensive to install.
Summary: This water heater has been a huge disappointment to me. From the very first, it has had problems with maintaining the temperature. I simply cannot get it to stay at the nice, warm temperature that I want. Every time I shower, the water changes from ...
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Jan 30 '08
Pros: All the hot water you could ask for.
Cons: Watch out if you live where the temperatures are colder than 32 degrees!!
Summary: Thought this was going to be great. We spent over $1000 on this unit, really liked the idea of conservation and was willing to pay extra, but sometimes "GREEN" is only the color of your $$ flying out of your wallet. You do have to wait a considerable ...
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Dec 04 '07
Pros: You get in great shape with daily runs to the heater's reset Button.
Cons: The kids don't like running to the basement to reset the heater at bath time.
Summary: We saw the Bosch 125 SX tankless water heater at a Home depot display in 2003. Since we wanted to gain some real estate for a Basement bathroom we liked the idea of a tankless water heater. The benefits of continuous hot water and energy savings verses ...
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Nov 08 '07
Pros: When it works and after a lengthy wait it delivers endless hot water.
Cons: Too long to heat, which wastes water. Not compatible with low-flow clothes washers.
Summary: I purchased a Bosch 635 ES Pro-Tankless water heater for my home and used a certified Bosch installer to put it in. It has been nothing but trouble. First, it takes > 2 minutes to deliver hot water and my bathroom is less than 20 ft of pipe run from ...
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Sep 27 '07
Pros: Endless hot water, lower gas bills
Cons: Installation can get expensive
Summary: I have read many of the other reviews for this unit on this site and have to say that it looks like every user has had a unique experience with their Bosch Tankless heater. I bought mine off of a friend (no warranty or support from Bosch) and installed ...
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Sep 04 '07
Pros: It looks good and takes up less space than a regular water heater.
Cons: Time to get hot water is too long. Temperature variations are much too large.
Summary: We purchased this unit because we wanted to more environmentally friendly. We knew that the cost would be more to buy and install ($2100) over simply replacing our old water heater ($700), but felt that it would be worth it in the long run. We expected ...
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Feb 14 '07
Pros: WHEN it works,the best shower ever, I'm sold on the "concept" of tankless heaters.
Cons: poor design.when it acts up, you get NOTHING! it doesn't "sort of" work.
Summary: to start off, I was sold on this by my brother in Houston (this will play a big factor in a minute) who had one installed and worked trouble-free for 6mos. or more, he loved it. I was amazed at the compact size for a "whole-house" heater and thought ...
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Jul 18 '06
Pros: Endless showers, not risk of 40 gallon water tank leaking in house.
Cons: temp. adj.; installation costs, problems with unit.
Summary: I talked my wife into a tank less water heater, told her everyone was going that way. Get that big bulky 40 gallon tank out of the house(ours was installed inside). The thought of that much water in the house was scary enough. She was excited about more ...
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Mar 03 '06
Pros: It can heat a lot of hot water at once.
Cons: Not good if you just want to supply a single low-flow usage
Summary: I bought one locally for $998...and spent at least that much on installation. First usage the heater made a noise so loud I was concerned the neighbors would call the fire department (it sounded a little like a fire alarm). Next day I called customer ...
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