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Heat pump water heaters · IE

Viessmann 7959724 Viessmann DHW Booster HP 170L 1.2 kW

The Viessmann 7959724 Viessmann DHW Booster HP 170L 1.2 kW is a heat pump water heater with water heating efficiency ηwh 176 %, load profile M and energy label A+.1

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Water heating efficiency ηwh
176%1
Load profile
M1
Official source
Energy label
A+1
Official source
Indoor sound power
45dB(A)1
Official source
ηwh, colder climate
176%1
Official source

Technical specifications

General
Load profileM1
Registered in EPREL2024-121
Efficiency
Water heating efficiency ηwh176 %1
ηwh, colder climate176 %1
ηwh, warmer climate176 %1
Energy labelA+1
Annual electricity use, colder climate292 kWh1
Annual electricity use, warmer climate292 kWh1
Noise
Indoor sound power45 dB(A)1
Connectivity & smart
Off-peak hours onlyNo1

How it ranks

Water heating efficiency ηwh: better than 96% of comparable models in our database (Heat pump water heaters · Load profile M; n = 98).

Rank 4 of 99

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.

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Frequently asked questions

What is the water heating efficiency ηwh of the Viessmann 7959724 Viessmann DHW Booster HP 170L 1.2 kW?

The water heating efficiency ηwh of the Viessmann 7959724 Viessmann DHW Booster HP 170L 1.2 kW is 176 %.1

Which load profile does the Viessmann 7959724 Viessmann DHW Booster HP 170L 1.2 kW have?

The Viessmann 7959724 Viessmann DHW Booster HP 170L 1.2 kW has load profile M.1

Which energy label does the Viessmann 7959724 Viessmann DHW Booster HP 170L 1.2 kW have?

The Viessmann 7959724 Viessmann DHW Booster HP 170L 1.2 kW has energy label A+.1

What is the indoor sound power of the Viessmann 7959724 Viessmann DHW Booster HP 170L 1.2 kW?

The indoor sound power of the Viessmann 7959724 Viessmann DHW Booster HP 170L 1.2 kW is 45 dB(A).1

Sources

  1. European Product Registry for Energy Labelling (EPREL) – water heaters — Europese Commissie · accessed 13 Oct 2026