ARISTON NUOS PLUS S2 WI-FI 250 FS 3069791
The ARISTON NUOS PLUS S2 WI-FI 250 FS 3069791 is a heat pump water heater with water heating efficiency ηwh 144 %, load profile XL and energy label A+.1
Key figures
Technical specifications
| General | |
|---|---|
| Load profile | XL1 |
| Registered in EPREL | 2025-121 |
| Efficiency | |
| Water heating efficiency ηwh | 144 %1 |
| ηwh, colder climate | 116 %1 |
| ηwh, warmer climate | 166 %1 |
| Energy label | A+1 |
| Annual electricity use, colder climate | 1,443 kWh1 |
| Annual electricity use, warmer climate | 1,009 kWh1 |
| Noise | |
| Indoor sound power | 48 dB(A)1 |
| Outdoor sound power | 57 dB(A)1 |
| Connectivity & smart | |
| Off-peak hours only | No1 |
How it ranks
Water heating efficiency ηwh: better than 68% of comparable models in our database (Heat pump water heaters · Load profile XL; n = 159).
Rank 46 of 160
Compared with every model on VersusIndex in the same group with a known value; equal values do not count as better. This says nothing about price, installation or reliability.
Variants
This model belongs to a series of 7 variants with the same load profile and energy class. The figures on this page apply to the variant above; other variants differ in: Water heating efficiency ηwh 144–157 %. After each type number you can see what differs:
- NUOS PLUS S2 WI-FI 250 FS 3069791
- NUOS FIT S2 WI-FI 250 FS 4057015 — Water heating efficiency ηwh: 157 %; Annual electricity use, colder climate: 1,069 kWh; Annual electricity use, warmer climate: 1,069 kWh; ηwh, colder climate: 157 %
- NUOS PLUS S2 WI-FI 250 SYS FS 3069792
- NUOS PLUS S2 WI-FI 250 TWIN SYS FS 3069793 — Water heating efficiency ηwh: 145 %; Annual electricity use, colder climate: 1,480 kWh; Annual electricity use, warmer climate: 1,028 kWh; ηwh, colder climate: 113 %
- NUOS PLUS S2 WI-FI 250I SYS FS 3069794
- NUOS SPLIT INVERTER WI-FI 270 3069757 — Annual electricity use, colder climate: 1,604 kWh; Annual electricity use, warmer climate: 1,068 kWh; ηwh, colder climate: 104 %; ηwh, warmer climate: 157 %
- NUOS SPLIT INVERTER WI-FI ER 270 3069763 — Annual electricity use, colder climate: 1,604 kWh; Annual electricity use, warmer climate: 1,068 kWh; ηwh, colder climate: 104 %; ηwh, warmer climate: 157 %
Compare with
Similar models
Other brands, same type and a comparable size.
More from ARISTON
- ARISTON 3629147-A J1 EVO UPD 150L Water heating efficiency ηwh: 131 %
- ARISTON NUOS PLUS S2 WI-FI 200 FS 3069790 Water heating efficiency ηwh: 142 %
- ARISTON NUOS PLUS WI-FI 200D 3069780 Water heating efficiency ηwh: 130 %
- ARISTON NUOS SPLIT INVERTER WI-FI ER 120 4057034 Water heating efficiency ηwh: 118 %
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Frequently asked questions
What is the water heating efficiency ηwh of the ARISTON NUOS PLUS S2 WI-FI 250 FS 3069791?
The water heating efficiency ηwh of the ARISTON NUOS PLUS S2 WI-FI 250 FS 3069791 is 144 %.1
Which load profile does the ARISTON NUOS PLUS S2 WI-FI 250 FS 3069791 have?
The ARISTON NUOS PLUS S2 WI-FI 250 FS 3069791 has load profile XL.1
Which energy label does the ARISTON NUOS PLUS S2 WI-FI 250 FS 3069791 have?
The ARISTON NUOS PLUS S2 WI-FI 250 FS 3069791 has energy label A+.1
What is the indoor sound power of the ARISTON NUOS PLUS S2 WI-FI 250 FS 3069791?
The indoor sound power of the ARISTON NUOS PLUS S2 WI-FI 250 FS 3069791 is 48 dB(A).1
Sources
- European Product Registry for Energy Labelling (EPREL) – water heaters — Europese Commissie · accessed 13 Oct 2026