Heat pumps · MT

Kronoterm ETERA S-1 HT / HK UF E (B/W)

Image: Kronotermrequest removal

The Kronoterm ETERA S-1 HT / HK UF E (B/W) is a heat pump with SCOP (35 °C) 5.33 and refrigerant R452B.^1,2

Last updated: 18 October 2026Technical specifications Rules in Malta ⇄ Compare this model

Search this model

SCOP (35 °C): 5.33²
Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.
Refrigerant: R452B¹
Official source
Type (source): Ground source¹
Official source
Rated output 35 °C: 9kW²
Official source
Rated output 55 °C: 9kW²
Official source

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)	Ground source¹
Performance
Rated output 35 °C	9 kW²
Rated output 55 °C	9 kW²
Efficiency
SCOP (35 °C)	5.33²
SCOP (55 °C)	3.93²
Seasonal efficiency ηs 35 °C	210 %²
Seasonal efficiency ηs 55 °C	154 %²
Energy label 35 °C	A+++²
Energy label 55 °C	A+++²
Noise
Indoor unit sound power	32 dB(A)²
Refrigerant
Refrigerant	R452B¹
Refrigerant GWP	675¹
Grants & market
ISDE grant (NL)	4,425 €¹

How it ranks

SCOP (35 °C): better than 77% of comparable models in our database (Heat pumps · Ground source · 8–10 kW; n = 22).

Rank 6 of 23

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

Product page (kronoterm.eu)

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

Similar models

Other brands, same type and a comparable size.

Frequently asked questions

What is the SCOP (35 °C) of the Kronoterm ETERA S-1 HT / HK UF E (B/W)?

The SCOP (35 °C) of the Kronoterm ETERA S-1 HT / HK UF E (B/W) is 5.33.^1,2

Which refrigerant does the Kronoterm ETERA S-1 HT / HK UF E (B/W) use?

The refrigerant of the Kronoterm ETERA S-1 HT / HK UF E (B/W) is R452B.^1,2

Sources

ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 27 Sept 2026
European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 18 Oct 2026
Water Heater Scheme (heat pump water heaters) — Regulator for Energy and Water Services (REWS)

Key figures