Ariston AURES Multi Electric Instantaneous Water Heater
Ariston AURES Multi Electric Instantaneous Water Heater 9.5kW, Multi-Point, Compact Size, ELCB System, User-Friendly and A Energy Rated. Manufactured to be Installed in UK – 3195216. [Energy Class A]
Energy saving & efficiency in Energy Rating A
Compact size of only 30.4 x 22 x 11 cm and easy to install
New Italian Premium design
 |  | |
|---|---|---|
| ErP Rating | A | A |
| Installation | Wall-hung | Wall-hung |
| Power | 9.5kW | 9.5kW |
| Max Working Temp (°C) | 55 | 55 |
| Tapping Profile | 30.4 x 22 x 11 cm | 30.4 x 17.8 x 9.8 cm |
| Weight: | 2.53 kg |
| Dimensions: | 30.4 x 11 x 22 cm; 2.53 Kilograms |
| Model: | 3195216 |
| Part: | 3195216 |
| Colour: | White |
| Pack Quantity: | 1 |
| Batteries Required: | No |
| Manufacture: | Ariston |
| Dimensions: | 30.4 x 11 x 22 cm; 2.53 Kilograms |
| Quantity: | 1 |
Its basically a shower unit and heats the water up when you turn the tap on, it’s not instant but quick enough. We bought this as when you used the gas boiler it took quite a while for the water to heat up and it wasted quite a lot of water whilst waiting.
This unit is good for handling waste, it is though very packed inside and you need to be careful when making the Electrical connection.
Only two months in but heats the water up well I took mine abroad and it’s working on 220v so it pulls about 8000KW or so on maximum,
It doesn’t need a lot of water pressure to begin heating the water which in my case is good and doesn’t seem to switch on and off erratically (like some other users have mentioned) apart from when obviously the temperature exceeds the built in thermostat range and even then it not really annoying.
The only thing is sometimes after running hot water, stopping then re- opening the hot water tap again it does kinda of super heat the water a bit and can burn your hands if your not expecting it . I think it may be to do with the appliance being well insulated around the water heating chamber I suppose it’s a trade off in efficiency compared to other instant heaters Iv’e had in the past that lose heat rapidly.
However on normal usage once you find the desired outlet temp it is stable if left at that rate.
Mine was a warehouse second with some cosmetic imperfection but is working well so far.
I liked that it is compact and easy to install. It also works pretty much as I expected.
The reset function is not readily accessible as it involves removing the top cover. Other than that, I have no complaints after a couple weeks of use.
If it’s closer to the tap that should obviously reduce wait times.
The install will require an electrician to be compliant and won’t be cheap. I paid 75 for the water heater (half the price on Amazon that it was from local retailers) but the 12m of 10 square cable, a couple of tektite plumbing fittings (6) and an RCBO for the fuse board cost me an additional 150 (bought locally). Add to that the cost of an electrician and possibly a plumber if you can’t install yourself.
Short answer is if you are planning on installing yourself the water heaters that heat and store a little water are much easier and cheaper to install. Simply plug in and attach cold feed / hot out.
Downside of those is you have a limited amount of hot water depending on your model 10 / 15l. Once it’s used it heats slowly over time to replenish and then keeps the water hot by intermittently turning on the heating element when the water temperature drops. That uses more electricity than an instant water heater as it’s technically heating 24hrs a day (intermittently) even if your not home or not using the hot water.
I have this installed about 15ft from the bathroom tap and it also feeds the kitchen tap about 30ft away. It works, the water is very hot at low flow rates but as soon as you open the tap fully it quickly cools to at best tepid temperatures. To be fair at the moment the mains water that it is connected to is icy cold coming in so it has to work really hard to heat it. I imagine during warmer months when the water coming in is not just a few degrees above frozen it will work much better.
A shorter draw and taking water from a storage tank that’s properly insulated as opposed to nearly freezing mains water would eliminate many of these problems but I didn’t have that option.
If you need unlimited hot water, don’t want to waste electricity, can manage the install yourself and have realistic expectations this is a great product.
So you need to cut your flow rate if like me you have good flow on your inlet. Using 4Litre/Min, on hottest gets quite hot (I didn’t measure the temp) but it was too hot to touch.
Using with a mixer tap was also ok and warm enough to use to wash hands. Probably good enough for wash basins and kitchen sinks but if you intend to use this in a shower possibly not the best solution as the flow rates that will give you any meaningful hot water will be pretty poor.
Installation manual says 6mm2 cable is sufficient but it’s borderline. After looking at wiring regs (UK) I found I had to use 10mm2 and what I’m doing is not extreme (12m cable run, clipped – not in trunking etc.).
Just to be clear to DIYers you cannot plug this in to a mains socket. It draws three times more current than your plug sockets can handle. You need a dedicated 40A circuit breaker and wiring and you will need an electrician to install it. That will probably cost you more than the heater.
Also for the DIYers you need to know that this heater will not produce hot water at mains flow rates. You need to reduce the flow rate to get warm water. The slower the flow, the warmer the water.
I replaced an 8.5kw shower with this heater and I’m getting mid 30 degrees water temps at about 3.5l/m (incoming water temp is about 5 degrees at the moment). Curiously this is slightly less than I was getting with the shower which is 1kw less powerful. The only explanation is the pipe run which is now a few metres instead of just the length of the shower hose. Something to think about.
Without flow restrictors it’s quite difficult to get the right temperature water. With the tap wide open at mains flow rates the water is stone cold. Close it slightly and it’s too hot to touch. Flow restrictors made it much easier to regulate. The manual says they are mandatory, though I’m not exactly sure why, but I would install them every time anyway.
It has three settings – low (4kw) / medium (5.5kw) / high (9.5kw). There is hardly any difference between low and medium and both only heat water if the flow rate is exceptionally low. I can’t see myself ever using these settings.
The only thing I’m somewhat unhappy about is the temperature varies quite a lot. This is not linked to water pressure/flow rate. It’s like the heating element is switching on and off. This makes getting a steady temperature for showing difficult.
Overall I would recommend but if you’re not a professional plumber/electrician or experienced DIYer you will need help.
I tried to return the unit only to be told the warranty expired in February.
I bought the unit in October. I believed all electrical goods would have a 12 month warranty not just 4 months?.
I have had to order and pay again for another unit as I didn’t want to repipe the sink.
I would be delighted to hear a response from Ariston.