Very unreliable water heater like most modern bosch products.
Main problems are the diaphragm and the hydro generator unit. The diaphragm will need regular replacement. Probably every 3 years For those who OFTEN have no hot water suspect diaphragm has a VERY small hole in it. If no hot water suspect the hydro generator unit. They are both easy to test and replace. Sure if both need replacement and you need a gas engineer to install bite the bullet and install a new not bosch unit. If repaired and setup correctly you will get constant temp hot water every time. I don't think most engineers have a clue about these heaters.
BE WARNED, FIRE HAZARD!
Last night I woke to the system pouring out with water. I turned the water mains off to them hear a hissing and strong smell of gas. This morning upon inspection the system had caught on fire! Melting the casing caused the water to pour out which must have put out the fire. I'm waiting a replacement now but very thankful it happened when I was home and awake (happened after a shower). Beside this I have always had trouble getting this system to actually work. Persistently turning the taps on and off to get the hot water to kick in. Very happy its being replaced, but still in shock about the gas catching on fire after a shower.
Finally fixed - It's gone
Because of the layout of our house we installed 2 Bosch H13 water heaters - one for the main bedroom and living areas and the other for the two remote bedroom ensuites. In the 5 years since we have not had a decent shower except when we go on holidays.
Both units exhibit the same annoying problem with the water temperature constantly varying between hot and cold while showing. We even tried one with the tempering valve removed but the problem was still there. While my elderly father was staying with us for a few months after an operation we had to arrange for him to shower in a neighbours house as he was not agile enough to dodge the hot and cold water extremes.
I contacted Bosch early on and was told I needed a less water efficient showerhead to fix the problem. I was excited by this fix until I discovered we already had the correct ones fitted. All other parameters and flows seem to be within Bosch's specifications.
All sorted now - they're gone and a heat pump unit installed in their place - and I've just had the best shower I've had since moving into this house.
Breaks down to many breaks down to many times and always forking out money breaks down to many times and always forking out money breaks down to many times and always forking out money breaks down to many times and always forking out money breaks down to many times and always forking out money breaks down to many times and always forking out money breaks down to many times and always forking out money
Hello, this is the second external LPG Bosch HWS I've owned, & be the LAST! I have had nothing but trouble with the unit firing up, (yes, i tried altering water pressure, gas reg's, etc.), it is always hit or miss. When it decides to work, I only get 3-4 minutes of hot then warm & you guest it cold!. Living in the country bottled gas is the only option to 240v., sadly the cost to repair, or even call out tech., is too dear. Back to electricity unfortunately.
Despite the reviews, it's been ok
Used in our shed where we've lived full time for 7 months (3 years now and still no problems...), 100% reliable so far. Despite frosty, minus 3 temperatures at times, there has been enough water for a good and hot shower all Winter. Wife is happy. I installed myself, lagged pipes from rain-water pump to heater, used a large LPG regulator. As Winter hit and the tank water temperature dropped I had to adjust the flow rate down twice, but despite this, there is still more than enough water for a good shower. We don't have water-saving devices fitted. As temperatures have begun to climb, we now need to add cold water because it is too hot, I may adjust the flow again, or maybe just use some cold while showering so that we can keep the water hot for the kitchen sink?
13H must stand for 13 times HORRIBLE!
Avoid this unit like the plague that it is .
I have lived with one for these past twelve years, and paid for it to be repaired for the last time . Out the door on Monday and hopefully straight to the tip where it belongs . Seven service calls in total ; an average of more than one every two years . I have spent hundreds of dollars in keeping this unit going and received no joy , or reliable hot water in return .
I also have a Bosch 780 Water Wizard on the second bathroom , this has given sterling service over more than 25 years . It needed a new diaphram recently , the only service call in that entire period . The Water Wizard was the reason I bought another Bosch unit , a huge mistake . Bosch obviously don't make them like they used to .
Judging by the trite , condescending and frankly insulting replies others have received from Bosch representatives it seems that I am not the only one to realise the company just doesn't care about its customers.
If Bosch continues to pinch more pennies in this way they will soon see a once proud company run itself onto the rocks of a massive consumer backlash.
The hollow words and tedious wait for response echo loudly in the wallets of the scorned consumer , something the Bosch public relations department should take very seriously.
Only option for a farm shed
Reliable, yes. But the manufacturer should put a drain plug in to drain the water at the bottom of the Heater. The frost has cracked and broken a part. The part itself cost almost $400 to replace. Luckily I put it in myself. It's a quality heater, but not suitable to be put on a wall outside, where it will freeze, and fail. I knew that, and had a special tap put in to be able to drain the Heater, but it wasn't possible to drain the water at it's lowest point. That is where is cracked.
Worst appliance ever
We are the unfortunate owners of a hydro power 13 H (serial number 582784). During its warranty period virtually the hole internal workings were changed several times. It never seemed to make a difference. Continually leaks, stops working,wont ignite, goes out on and on and on and on !!!!!!!!!!!!!!!!!
We have 5 children and its gone on the blink AGAIN !!!!!!!!!!!!!
Will not light first time
Another complaint to add to the list for these atrociously designed systems. I have plenty of flow to shows and taps as we have no restrictors (yes, we waste lots of water just to get this ridiculously poor system to run). Every time the hot tap is turned on the spark fires but the gas usually won't light. Typically it takes 5-6 goes to get the gas to light and the only easy way to know when this happens is go out but the system and open and close the main water valve, continually triggering a startup attempt until it lights. About 5% of the time it will light first go. The rest take up to 10 attempts. I think it's time we assemble a class action against Bosch to get refunds on what is clearly a system which fails to do what it is designed to and which fails well within what a reasonable person would consider the life span for a hot water system of this value and make.
Absolute piece of crap
This would have to be the worst hot water system i have ever come across, should not be worth any more than $5 brand new, will look for an alternative brand that performs as required which should not be too difficult to find
Score out of 10 would be -9,
Unreliability of this unit is the best remark I can give it. Installed 5yrs ago and nothing but problems. Hot water when it feels like it... had it checked a few times by approved Bosch plumber... and as of 6 days ago, cold showers and back to boiling the jug and premixing with cold water.zzzz
Just no good enough from this brand.
My advise is not to buy this particular models. Shop around for other brands you'll be sure to get a better product than this one !!
Terrible- no zero star option
Purchased machine brand new in late 2011 and how ironic just after warranty period lapses (2 year warranty) the unit plays up?!
The ignition module doesn't work hence no hot water.
Paying more than $400 out of pocket expenses on a hot water unit that cost me $710! No surprise year 2015 the same failure yet again??
I had called customer service back when the first issue occurred just after warranty only to be told, " you need to get out a plumber to fix the issues, do you want a list of plumbers in your area?"!
Bosch is living on passed merits!
Save your time money and sanity get a Rinnai! Have never had issues with the Rinnai units on other properties, ever!
Good riddance Bosch!
Bosch, where is the customer service? No satisfactory outcomes here!
We have a Bosch hydropower 13 H I am not going to write a repeat essay it's exactly what eveyone one describes. Unreliable hot water from one use to the next. Boiling one minute freezing the next. Eight plumber visits with nothing decernable outcome! And to preempt a reply from Bosch that reads the same as eveyone else's don't bother I know how it reads. So sorry your experience of this product is negative please contact us so we can rectify. . . We have! you never do it seems ! It seems clear the model has issues but no company back up. Like eveyone else it means I'll never by Bosch anything again.
Unreliable & poor support
I have had a Bosch 13H since 2007. The plumber who installed/ sold it to me was not interested once out of warranty. It has been serviced several times by the SA agents since then. They say they can't find anything wrong with it (and charge me for that). The shower has temperature fluctuations - from cold to scalding with no warning. I've contacted the SA agent's office who have replied - saying straight away that it's not the heater and
(set temp. 37c) – (Cold water temp 15c) = (temp. rise 22c)
You would need 3 LPM flow rate to keep electronic gas hot water system on".
However it's not an electronic one and the minimum flow rate for the 13H is 3.2L/ min.
There are also some errors in the calculation examples they have sent me.
Also, their plumber has checked the flow rate in my shower & said it's OK.
(Once I got this Bosch Hydropower system, I had to give up on any attempts on saving water in the shower - as promoted by the SA Government - a state where there have been water shortages).
Every person who has ever used the shower has complained to me about temperature fluctuations.
However, the Bosch agent refuses to accept that there's anything wrong with it.
The above is only a brief summary of the problems I've had with this Bosch 13H unit.
Btw, I have a degree in engineering, so I do know a bit about fluid flow, thermodynamics etc.
13H - Has never been reliable
We live in QLD and have persevered with the Bosch 13 Hydropower for about 8 years now, But finally I have given up nursing it along and will be replacing it this week with a more reliable product from another supplier.
Our troubled journey started when a salesperson from a retailer advised my wife this was the perfect size for our 4 bedroom, 2 bathroom home with 2 adults and 4 kids to run on a rural property using tankwater where the pumps don't work when there is no electricity and we were using water saving shower heads. So for many reasons this unit was the wrong choice for us and so this was the first annoyance. (Salespeople uneducated in the products they sell is a major annoyance of mine.)
Due to it's flow rate we have only ever been able to use 1 shower at a time even when the unit was operating properly.
Not long after we had it installed we started having periods where it would simply not light and a lot of water would be wasted trying to get it working. Sometimes it would work and other times not. Just appeared to be random. At times you could get it to light by stopping and starting the hot water at the tap. Some time you just needed to give it 12 hours or so and then it would work again.
We quickly learnt that you could not open the cold tap at all until the hot water system was alight and hot water was flowing. You had to apply limited cold as too much would often cause the hot to stop working.
As the unit was far too small for our needs we needed to set the controls to maximum flow which reduced the temperature to a point that in winter you would find yourself not being able to add any cold whatsoever.
The filter in the waterwheel unit got clogged so regularly that I ended up just removing it. Whenever it become clogged the unit would fail to ignite. I also found that the bypass into the waterwheel was often not enough due to our fluctuating pressure from the pump and hence again the unit would not light. So in the end I reversed the valve to force most of the water coming through the pipe to travel through the bypass and engage the waterwheel. This was by far the most successful solution I had employed. It solved many (but not all) of the random failures to light.
More recently the problem I have had is not the lighting of the pilot flame but the transfer of that flame to light the rest of the burner. For some unknown reason this has become problematic with an increasing failure to light.
We also found that during periods of heavy rain where the humidity was highest that the unit would often fail to ignite even though the unit, despite being outside, was fully protected from rain.
Overall the product has simply been unreliable.
Would not recommend to anyone
We moved into a property that already had the 13H unit installed. This is the most useless piece of junk I have ever come across. You waste enough water to fill a swimming pool to try and ignite the thing and even then it still won't ignite.
You can only have your shower during the day which is pointless because your at work. You cant heat water to wash dishes or use the dishwasher.
Each morning I am running to my parents house for a shower before work because our system just won't work.
By reading all the reviews on this site as well as others I am going to go ahead and say there is just no point in saying there is no point in wasting my time or money to get the thing fixed as it's just a general issue with the system and I am better off replacing it with a more reliable brand and system with better customer service and reliability on the product.
Bosch Hydropower 13H - Scolding hold or dead cold
I can never have a simple hot shower. The water is scolding hot then goes dead cold, burning hot again and then cold. When I say hot, I mean that I would need to be taken to the hospital with serious burns if I were to stay under the water. Then it goes cold. Freezing cold.
I was just washing my dishes and burnt my hand. I almost cried. So I went to inspect the system to see if we could change the maximum temperature. Nothing. No dial visible. After reading the other reviews I think we will have to change. Can't go on like this, especially that we have a little on it's way... Very dangerous.
Dangerous hot, then cold
No stars for this
Very pleased I found this page. Just moved into a house with a 13H bosch hydro water heater,supposedly only 18 months old, it's dreadful, keeps going hot,cold,hot,cold, got a new bottle of gas, to make sure there was plenty, had to wait 5 mins for water to get hot tonight, then nearly scalded my head trying to wash my hair...2 nights in a row now, had to get out of shower , cold water running not hot, get dressed and go and see if the gas is on....wastes water too...I need help, only 1 in household , so no kids using it all up, surely a 13H should be big enough to heat water for some washing up and a shower daily ???? Not happy at all.
Worst Household Purchase Ever!!
Six years of patience, 1 repair and $1600 down the drain. Have 13H model and hate it. At first would cut in and out during showers. Temperature very touchy hot days blistering water cold days none at all whilst cutting in and out. Plumber adjusted still no better. Ignition box replaced last year $354 on a unit I still consider fairly new. Not overly used 2 person household, washing machine heats own water. Takes forever for any hot water to come through running for twenty minutes changing different pressures to make unit ignite. Washing up in lukewarm water and back to boiling kettle for sink. Final straw this winter sick of stress listening to partner yelling at 430 on frosty morning waiting 20 minutes to have a shower rang plumber asked to replace with old storage type before i ripped it off the wall myself! Also have large water usage on my bill from excessive running of taps waiting for hot water. Lets not even discuss environmental issue of water wastage. Quote for new system $1615. Thank you Bosch for a useless appliance would rather have spent cash on holiday instead of wasting it on replacing a useless appliance that should still be working for many more years yet.
Not reliable. Touchy temperature - scared to have visitors with kids just in case of scalding. No hot showers on frosty mornings makes for domestic bliss!