Ariston NUOS Plus Wi-Fi 250L Air Source Heat Pump Water Heater
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Ariston NUOS Plus Wi-Fi 250L (Indirect) Heat Pump Water Heater
The Ariston NUOS Plus Wi-Fi 250L Indirect is a high-capacity air source heat pump water heater with Wi-Fi control, designed for integration with external heat sources (such as boilers or solar). It offers fast, efficient hot water production, advanced self-learning modes, and robust anti-corrosion protection—ideal for large households or light commercial use.
Key Features
- 245L indirect model – can be connected to a boiler or solar system
- Wi-Fi enabled for remote control via Aqua Ariston Net app
- Highly efficient COP of 3.14
- Heat up time: 5h 24m (to 55°C)
- R134a eco-friendly refrigerant, water temperatures up to 62°C in heat pump mode
- Energy savings up to 80% vs. traditional cylinders
- Super silent at 51 dB(A) in Silent Mode
- Extended operating temperature range: -10°C to 42°C
- Plug & Play installation – no F-Gas qualification required
- Active (ProTech) and magnesium anode, titanium enamelled steel tank
- Anti-legionella, anti-freeze, anti-corrosion protection
- Brand new working modes: daily/weekly programming and I-Memory self-learning
- Energy rating: A+ (XL profile)
Technical Specifications
| Model | NUOS Plus Wi-Fi 250I |
|---|---|
| Product Code | 3820028 |
| Nominal Storage Capacity | 245L |
| Energy Class | A+ |
| Tapping Profile | XL |
| COP (EN16147, 7°C) | 3.14 |
| Heat Up Time (to 55°C) | 5h 24m |
| Max Water Temp (HP/Immersion) | 62°C / 75°C |
| Operating Temp Range | -10°C to +42°C |
| Max Operating Pressure | 6 bar |
| Sound Power Level (Silent Mode) | 51 dB(A) |
| Voltage/Max Power | 220-240V / 2500W |
| Heating Element Power | 1500W + 1000W |
| Dimensions (HxWxD) | 1997 × 810 × 600 mm |
| Weight (empty) | 115 kg |
| Refrigerant | R134a (1.3 kg) |
| EAN | Not published |
Please note: Delivery times may vary depending on location, with specific details outlined below.
Standard Delivery
UK Mainland
- Delivery Time: 2–4 working days
- Free Delivery on all orders
Express Delivery
UK Mainland
- Delivery Time: 1–3 working days
- Delivery fee of £15
Channel Islands
- Postcodes Covered: GY*, IM*, JE*
- Minimum Order: £50
- Delivery Fee: £70
Northern Ireland, Offshore Territories & Scottish Islands
- Postcodes Covered: BT*, HS*, KW, ZE
- Minimum Order: £50
- Delivery Fee: £35
Same Day Delivery
- Eligible Postcodes:
E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW* - Minimum Order: £50
- Same Day Delivery Fee: £60
- Special Requests or Locations:
For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.
Collections
Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.
Collection address: 284 Water Rd, Unit 9, London, HA0 1HX
- Type Heat Pump Water Heaters
- Vendor Ariston
- SKU NUOS250