Heat pump water heaters · UK

LG WH27S F5X

The LG WH27S F5X is a heat pump water heater with water heating efficiency ηwh 155 %, load profile L and energy label A+.1

Key figures

Water heating efficiency ηwh
155%1
Load profile
L1
Official source
Energy label
A+1
Official source
Indoor sound power
55dB(A)1
Official source
ηwh, colder climate
155%1
Official source

Technical specifications

General
Load profileL1
Registered in EPREL2026-061
Efficiency
Water heating efficiency ηwh155 %1
ηwh, colder climate155 %1
ηwh, warmer climate155 %1
Energy labelA+1
Annual electricity use, colder climate646 kWh1
Annual electricity use, warmer climate646 kWh1
Noise
Indoor sound power55 dB(A)1

How it ranks

Water heating efficiency ηwh: better than 83% of comparable models in our database (Heat pump water heaters · Load profile L; n = 175).

Rank 29 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 4 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:

  • WH27S F5X
  • WH27S F5 — Registered in EPREL: 2020-12
  • WH27STR2 FA — Registered in EPREL: 2025-04
  • WH27STR2 FAX

Similar models

Other brands, same type and a comparable size.

Guides on heat pump water heaters

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Frequently asked questions

What is the water heating efficiency ηwh of the LG WH27S F5X?

The water heating efficiency ηwh of the LG WH27S F5X is 155 %.1

Which load profile does the LG WH27S F5X have?

The LG WH27S F5X has load profile L.1

Which energy label does the LG WH27S F5X have?

The LG WH27S F5X has energy label A+.1

What is the indoor sound power of the LG WH27S F5X?

The indoor sound power of the LG WH27S F5X is 55 dB(A).1

Sources

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