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Heat pumps · MT

Clivet WiSAN-PMP 1 S 2.1

Clivet WiSAN-PMP 1 S 2.1
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The Clivet WiSAN-PMP 1 S 2.1 is an air-to-water heat pump with a SCOP of 5.23 (35 °C) and a sound power level of 46 dB(A).1,2,3

Last updated: Technical specificationsRules in Malta⇄ Compare this model
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SCOP (35 °C)
5.233

Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.

Heating capacity (A7/W35)
4.1kW2
Official source
Outdoor unit sound power
46dB(A)3
Official source
Refrigerant
R2902
Official source
Type (source)
Air-to-water2
Official source
MT

Rules in Malta

Water Heater Scheme (heat pump water heaters)

Unknown

REWS runs a national grant scheme for energy-efficient water heaters in homes; heat pump water heaters are eligible (alongside solar water heaters). The scheme has been extended to 31 December 2026, and part A of the application must be submitted before you buy and install the equipment. Grant amounts: see the REWS page (not verified by us).

Technical specifications

General
Type (source)Air-to-water2
Performance
Heating capacity (A7/W35)4.1 kW2
Rated output 35 °C5 kW3
Rated output 55 °C5 kW3
Efficiency
SCOP (35 °C)5.233
SCOP (55 °C)3.93
Seasonal efficiency ηs 35 °C206 %3
Seasonal efficiency ηs 55 °C153 %3
Energy label 35 °CA+++3
Energy label 55 °CA+++3
COP A7/W355.32
Noise
Outdoor unit sound power46 dB(A)3
Refrigerant
RefrigerantR2902
Refrigerant GWP32
Refrigerant charge1.05 kg2
Grants & market
ISDE grant (NL)2,125 €1

How it ranks

SCOP (35 °C): better than 94% of comparable models in our database (Heat pumps · Air-to-water · 4–6 kW; n = 122).

Rank 7 of 123

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.

Manufacturer documentation

External links to Clivet's official website. The manufacturer may change or move documents; where they differ, the manufacturer's latest version applies.

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Other brands, same type and a comparable size.

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Frequently asked questions

Which refrigerant does the Clivet WiSAN-PMP 1 S 2.1 use?

The Clivet WiSAN-PMP 1 S 2.1 uses R290.1,2,3

Sources

  1. ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 27 Sept 2026
  2. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
  3. European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 15 Oct 2026
  4. Water Heater Scheme (heat pump water heaters) — Regulator for Energy and Water Services (REWS)