I have had a C6 26L for 2 weeks, I cannot get it to fault as described in other posts on here. mine heats the water instantly, hot water in less than 10 seconds (3 meters from bathroom) I can turn on any other tap in the house and it does not effect hot water or pressure.
Worst thing I have ever purchased
Never had a problem with my old electric storage hot water but made the mistake of changing to gas with a Thermann gas system. Plumber installed this system and from the start it has had such inconsistent temperatures - suddenly runs completely cold for 5-10 seconds which is not fun in winter. Complained to the plumber that installed it who talked me into getting new tapwear as it seemed the cold tap was old and worn and that was the problem. After testing the new taps he noticed when the hot tap was on solely it worked fine for a few seconds t...hen dramatically dropped in pressure and confirmed this by running the water straight from the hot water system outlet. Called his rep at Thermann who said it was the gas regulator so he replaced that. That has done nothing and is worse than ever. I dread showering every night as it fluctuates between extremely hot and freezing cold constantly.
Purchased in September 2018 for $1,800.00.
Unit works well! Disappointed in the plumber who recommended a 50 degree unit to replace a 60 degree unit
Recently had new Thermann26 installed to replace an old unit. We were not getting hot water to several locations in the house. I have had little response from the plumber but great response from Herrmann who have made attempts to come on-site to review. The issue is that the Thermann 26 is a 50 degree unit replacing a 60 degree so water temp lower than previous. It appears probable negligence on part of the plumber. Fantastic support from Thermann people to resolve the issue. Highly recommended.
Purchased in May 2019 at Directly from the plumber for $1,200.00.
Very low pressure
Purchased this unit on recommendation from plumber after my old storage unit died. Pressure from this unit is atrocious. Shower at 1 end of the house goes completely cold mid shower and you have to turn off the cold water then wait for hot to come back. If you want to use two appliances like the kitchen sink and a shower.... forget about it.
Positive is it never runs out of hot water.
Definitely should have gone for another storage unit.
Purchased in January 2019 for $2,000.00.
Best gcf i ever used
Previous dux heater used 45 kg bottle in 6 weeks only 2 0f us and hot water only thermann is at 11 weeks and still going spot on hot water and easy to use
Would absolutely recommend it we are on tank water with pump
No problems whatsoever
Very happy with this unit
One month in since I installed the Thermann 6* 16L and I'm very pleased. I only need to wait around 15-20sec to have a very hot water in the shower (@60C), I don't experience any water temp' fluctuation, and the water flow is steady.
the only reason I gave it 4*and not 5* is because you can't change the temperature without buying the R/C for an extra $100.(which I didn't buy)
Please note, the system is for serving two people with minimal use( showers and a bit in the kitchen ), the distance from the unit to the shower is around 8 meter, and to the kitchen is around 4 meter.
The installation was straightforward and cost $1100 including the unit.
Constant waste of water. From every outlet I have to wait ages for any hint of hot water with the cold turned off. The temperature also fluctuates still with the cold off. Sometimes it doesn’t even kick in and send hot water, I’ve had to go and turn the unit off and on again. Another waste of my money thanks to a plumber highly recommending it. Very very disappointed
- Verified purchase
Agree wholeheartedly with Worst Item Ever
So much water is wasted to actually get hot water. Bought this thinking it would be more economical, stupid decision. Used to be able to have a 5 minute shower, now to get 5 minutes of water at a perfect temperature I am standing there for at least 25 minutes. Shower goes cold after about 3 minutes. No good just trying to adjust the hot water tap. Have to completely turn the shower off and start again - so again you're wasting litres of water to get hot water. Our gas bill is also now a lot more!
- Verified purchase
Thermann 6* 20L C/Flow 50DEG NG
Very pleased with the Thermann 6* 20L C/Flow 50DEG NG unit. The installation is for a small cottage with 1 bathroom. All kitchen , laundry and bathroom outlets within 14 feet of the heater. The install took about 5 hours and included the removal of the DUX electrical off-peak tank and changes to plumbing pipes in that area. I am new to the 50C hot water regulation, but the water seems hot enough to wash dishes in and the shower is comfortable to bath in and flow seems fine. I did have the water saver shower rose removed and a standard rose fitt...ed to the shower, it is an 8 litre per minute WELS shower head. The all up cost was $2192.20 which included $220 for a level 2 electrician to remove the off peak meter from the meter box and $126.50 for the electrician to install the outside power point and terminate, in a block ,the off peak power line.
Only want a good shower
I thought that it wasn't very good for the first two years, terribly bad pressure in the shower, good every where else, I had taken out shower head restrictor didn't seem to make any difference,, finally found another restrictor at the inlet, goodness two of them, my shower is now perfect
Worst item ever
So much water is wasted to actually get hot water. Bought this thinking it would be more economical, stupid decision. Used to be able to have a 5 minute shower, now to get 5 minutes of water at a perfect temperature I am standing there for at least 25 minutes. Shower goes cold after about 3 minutes. No good just trying to adjust the hot water tap. Have to completely turn the shower off and start again - so again you're wasting litres of water to get hot water. Had an elderly relative stay who needs a shower chair, she had to bathe at the neighbours - she would either have 3rd degree burns or be frozen at our house. Continuous hot water - what's that?????
- Verified purchase
Installed new Thernann 26 today. Less than impressed.
I just had a Thermann 26L/m continuous natural gas hot water unit installed today. My water pressure at the mains is 75psi before installation and I don't have any water saving heads in the home. So no problem with water pressure. When the plumber left and I got a chance to use it, I noticed it takes a good 30-45 seconds to go from cold water to luke warm and then rises to 50 degrees after a minute. My hand basin is on level ground less than 5m away. My kitchen about 10-12m away was worse. I turned the hot water on and had to wait over a minute...before it got anything hotter than just luke warm. You would fill a kitchen sink full with wasted cold water before you get any hot water out. This is a complete waste of water. The worst thing, is after you visit the toilet and go to your hand basin to wash your hands. You're washing in cold water for 10 seconds even before the unit has any sign of mildly heating up and then you stop the water. Say goodbye to washing hands in warm water on a cold winters day. This is a 1 bathroom house. I live alone. This has been a disappointing $3000 investment all up installed and connected to replace a 250L electric tank HWS including an updated circuit in my electrical powerbox. I will not recommend this product at all. Over a minute to get mid to high 40's and then 50 degrees is abysmal. This product came 'highly recommended' by the Plumbing and Electrical Doctor. 'Everybody gets these units now and they are great' I was told. I actually read up and found the 26 sizing too excessive for my use and requested a 16 or 20, but again was told 'We recommend and only install 26's in every house now'. For such a highly praised company to highly praise this unit, one would expect a level of performance. This morning I had a shower. The water took over a minute to get to temp. In the early stages of the shower it went warm and then luke warm, then warm again to hot. I maybe had to adjust it 3 times at first. But after it was running it had no problem supplying hot water. The trade off with these units is wasted time and a lot of wasted water. Im in suburbia, but if you are on a rural property and have tank water, Do not buy this unit.
Better than Rinnai
Just had a Thurmann 26 installed to replace our 10-year-old Rinnai. Heat exchanger in the Rinnai sprung a leak and it was not economical to replace and Rinnai one we're not interested even though it was just over 10 years old and out of warranty and 2. it was going to take them a week at least to get a servicemen to look at it. We had our Thurmman from All blocks Plumbing replaced within 2 days. The Thurmman has a great warranty and the best bit is you don't need to call the company to get their service agent out to look at it, the plumber who ...installed it is the service agent. My only little gripe is, it does seem to have an audible beep coming from the unit and I cannot find any information on it whatsoever...so Thurmman if ya listening...what is it? (ps no remotes connected)
We had one of these installed about six months ago. The hot water temperature is perfect. The plumber recommended this system and it has been a great choice. Would highly recommend one of these continuous hot water systems. It is much cheaper to run than the old electric hot water service.
Research required prior to product selection
I made an impulsive decision to replace a 25 year old electric storage hot water system with new Thermann gas continuous flow hot water unit. Didn’t bother to research the options and relied entirely on my Plumber whose advice I normally value.
A major downfall with the Thermann unit is one which, from other product reviews, I should have realised prior to its purchase. Whilst the Thermann unit adequately provides continuous hot water for use in kitchen and laundary, it cannot be relied upon to supply continuous hot water to a shower without...
The Thermann 26 requires a a large volume of water to make it work so it won't work with water saving shower heads which is quite unbelievable in this day & age. It is not possible to close the hot water tap much to reduce flow & temperature as the gas cuts out, as it does if you turn the cold up much. As it is heating a large volume of water all the time to what I consider too high a temperature then it must by definition be using a lot of gas which is borne out by the fact that we now have VERY large gas bills and in a home with only two peo...ple and with very little gas used for anything else. Upon investigation with the distributor it seems that the temperature is not adjustable despite the instructions stating that it can be changed by resetting the dip switches. The instructions fib it seems. It is the worst piece of equipment I have purchased for a long time.
So our we replaced our old gas water heater, Tank type. This Thermann produces a lot of hot water, fantastic. Problem is you cannot use water saving shower heads, need the waterflow to be high in order to get consistent water temperature. The worst part for us, is the exhaust gasses (Carbon monoxide) will fill the shed and or gazebo so you have to vacate these areas until the gasses disappate. So now I have been informed that my options are to relocate the hot water water system (and plumbing) or get a an additional flume to discharge the gasses above the roof line of the house which will hopefully prevent the gasses filling the gazebo or shed.
- Verified purchase
What a difference
With electricity prices going through the roof, I recently made the decision to dump electricity in favour of gas. Being rural, I had to increase the size of the line from my LPG tanks to carry the larger gas flow so that the two showers in my home could be used at the same time. The install was made quickly and the over large electric storage tank was removed (so much more space now). I am more than happy with the results and the continuous hot water never runs out (unless the LPG tank does).
I have waited several months to write this review ...
Thermann Gas Continuous Flow Hot Water.
I had this unit installed to replace the useless Chromagen Solar Hot water system. The Thermann unit I had installed by Diamond Valley Plumbing is the 26L 6 star unit which is preset at 60deg. The water heats very quickly and is continuous without any disruption. The unit comes with a 12 year warranty for peace of mind also. Leaves the old Chromegan system for dead and no stupid oversize storage tank taking up space.
Thermann hot water system gas continuous flow 6 star
This is the worst system in the world. If only there was an option to give it zero.
I got a plumber to install the system about 4 months ago and has not worked properly from day one.
3 mins in to a shower the system will stop making hot water and I will have to wait another 3 months until it heats up. Rang up the company who advised me that my gas meter was too small and needed to be upgraded. The meter was upgraded, cost me $500 and still the same problem. I know this was a lie, because my sister has a rinnai with a small meter and not one...
Questions & Answers
hi I have a Rinnai 24 with two controller panels in the house im looking at replacing it with a thermann 26L 6* 9505078 will my controller panels work with this unit
Thermann Hot WaterThermann
Thank you for your inquiry!
In regards to your question! You will need to replace the current controllers with the Thermann universal controller, as the electronics in the unit will not recognise your current controller!
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