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Kronoterm ETERA S UF

Specifications and technical data

Also known as: ETERA S-1 HT / HK UF E

✓ BUS eligibleGround Source (GSHP)ResidentialR452B4.5–9.1 kW

Manufacturer	Kronoterm
Model	ETERA S UF
Model code	2222000142599
Heat pump type	Ground Source (GSHP) All Ground Source heat pumps →
Application	Residential All Residential heat pumps →
Refrigerant	R452B All R452B heat pumps →
Mode	Heating & cooling
Heating capacity	4.5–9.1 kW
Max heating output (low temp)	9.1 kW at B0/W55
COP (heating)	4.7 at B0/W35
SCOP (heating)	5.46 at W35
Operating range (air)	-10 to 15 °C
Heating flow temperature	15–68 °C
Electrical supply	220-240V (Single Phase)
Cooling capacity	3–9 kW
Cooling flow temperature	7–25 °C
Dimensions (H×W×D)	1515 × 600 × 600 mm
Operational Weight	185 kg
Sound power level	32 dB(A) (Sound Power LW(A))
Data added	17/07/2026
Data source	Manufacturer Brochure (etera-brochure.pdf)
Verification	Verified by a human
Boiler Upgrade Scheme	✓ BUS eligible — Listed on the Ofgem BUS Product Eligibility List (24 Sep 2026). Grant also needs an MCS-certified installer and a qualifying system design. Funding guide
PEL certificate no.	011-1W0885_1
MCS certification	✓ MCS listed
MCS certificate no.	011-1W0885_1
MCS listing	View on MCS ↗

Free data sheet (PDF) →

View manufacturer page →

Modular ground/water-source heat pump (LCL modular design), sold with separate HYDRO B DHW module (200L tank, up to 400L usable hot water at 40C, mass 74kg, same 600x1515x600mm footprint)

Where to buy (UK)

UK Supplier	Krono Heat Pumps (UK distributor)
UK Supplier	Simply Renewables
UK Supplier	Smith Brothers Stores

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Data is compiled from manufacturer sources and may contain errors or gaps. Always confirm specifications with the manufacturer before making decisions.