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Heat pump water heaters · UK

Cooper&Hunter CHML-U36RK4-HW+WT200HW1.5ERK

The Cooper&Hunter CHML-U36RK4-HW+WT200HW1.5ERK is a heat pump water heater with water heating efficiency ηwh 115 %, load profile L and energy label A+.1

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Water heating efficiency ηwh
115%1
Load profile
L1
Official source
Energy label
A+1
Official source
Indoor sound power
56dB(A)1
Official source
ηwh, colder climate
83%1
Official source

Technical specifications

General
Load profileL1
Registered in EPREL2025-061
Efficiency
Water heating efficiency ηwh115 %1
ηwh, colder climate83 %1
ηwh, warmer climate145 %1
Energy labelA+1
Annual electricity use, colder climate1,231 kWh1
Annual electricity use, warmer climate706 kWh1
Noise
Indoor sound power56 dB(A)1
Outdoor sound power63 dB(A)1

How it ranks

Water heating efficiency ηwh: better than 8% of comparable models in our database (Heat pump water heaters · Load profile L; n = 175).

Rank 155 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 2 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:

  • CHML-U36RK4-HW+WT200HW1.5ERK
  • CHML-U42RK5-HW+WT200HW1.5ERK

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Frequently asked questions

What is the water heating efficiency ηwh of the Cooper&Hunter CHML-U36RK4-HW+WT200HW1.5ERK?

The water heating efficiency ηwh of the Cooper&Hunter CHML-U36RK4-HW+WT200HW1.5ERK is 115 %.1

Which load profile does the Cooper&Hunter CHML-U36RK4-HW+WT200HW1.5ERK have?

The Cooper&Hunter CHML-U36RK4-HW+WT200HW1.5ERK has load profile L.1

Which energy label does the Cooper&Hunter CHML-U36RK4-HW+WT200HW1.5ERK have?

The Cooper&Hunter CHML-U36RK4-HW+WT200HW1.5ERK has energy label A+.1

What is the indoor sound power of the Cooper&Hunter CHML-U36RK4-HW+WT200HW1.5ERK?

The indoor sound power of the Cooper&Hunter CHML-U36RK4-HW+WT200HW1.5ERK is 56 dB(A).1

Sources

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