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Heat pump water heaters · UK

Sunex DROPS D4.1

The Sunex DROPS D4.1 is a heat pump water heater with water heating efficiency ηwh 96 %, load profile L and annual electricity use (average climate) 1111 kWh.1

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Water heating efficiency ηwh
96%1
Load profile
L1
Official source
Annual electricity use (average climate)
1,111kWh1
Official source
Energy label
A1
Official source
Indoor sound power
59dB(A)1
Official source

Technical specifications

General
Load profileL1
Registered in EPREL2026-061
Efficiency
Water heating efficiency ηwh96 %1
ηwh, colder climate96 %1
ηwh, warmer climate96 %1
Energy labelA1
Annual electricity use (average climate)1,111 kWh1
Annual electricity use, colder climate1,062 kWh1
Annual electricity use, warmer climate1,062 kWh1
Noise
Indoor sound power59 dB(A)1
Outdoor sound power59 dB(A)1
Connectivity & smart
Off-peak hours onlyNo1

How it ranks

Water heating efficiency ηwh: better than 1% of comparable models in our database (Heat pump water heaters · Load profile L; n = 175).

Rank 173 of 176

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 is registered in 6 combinations (for example with a different indoor unit or cylinder) with exactly the same performance. All figures on this page apply to each of these types. The part of the type number that differs is in bold; small differences (e.g. cylinder volume or anode) are listed after it:

  • DROPS D4.1
  • DROPS D 4.1 C
  • DROPS M4.1
  • GELBI D4.1
  • GELBI D4.1 C
  • GELBI M4.1

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Frequently asked questions

What is the water heating efficiency ηwh of the Sunex DROPS D4.1?

The water heating efficiency ηwh of the Sunex DROPS D4.1 is 96 %.1

Which load profile does the Sunex DROPS D4.1 have?

The Sunex DROPS D4.1 has load profile L.1

What is the annual electricity use (average climate) of the Sunex DROPS D4.1?

The annual electricity use (average climate) of the Sunex DROPS D4.1 is 1111 kWh.1

Which energy label does the Sunex DROPS D4.1 have?

The Sunex DROPS D4.1 has energy label A.1

Sources

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