YORK heat pumps

Air/water monoblocAir/water split 3 series

YORK is a heating and air-conditioning brand of Johnson Controls International. Its European residential heat pump range is the R32 YKF air-to-water series, sold as the YKF Mono monoblock (4 to 16 kW, hydraulics in the outdoor unit) and as the YKF Split, an outdoor unit with either a wall-hung hydronic box or a floor-standing indoor unit with a 190 or 240 l stainless steel hot water tank. All of them heat, cool and make hot water, and the YKF models are on the Polish ZUM list. Since 2025 the YORK residential and light commercial business is licensed to the Bosch Home Comfort Group.

Checked November 4, 2026 · Manufacturer website

Grant lists

BAFA WEP (Germany)

0 / 3 checked November 4, 2026

ZUM (Poland)

3 / 3 checked November 4, 2026

YORK in Zerofy

Zerofy has no integration for YORK yet. Where a series below has an SG Ready input, Zerofy can still switch it through a Shelly relay. The heat pump comparison lists every brand Zerofy supports.

YORK heat pump types

Air-to-water monoblock1 Air-to-water split2

YORK Air-to-water monoblock

The whole refrigerant circuit sits in one outdoor unit; only water pipes run into the house. The most common choice for retrofits, because no refrigerant lines need to be installed inside.

Air/water monoblocR32

YORK YKF Mono

10 models

Output
4.2–16 kW
SCOP 35 °C
–
Max. flow
65 °C
BAFA WEP
No model on the list
ZUM
6 models listed
Zerofy
Via SG Ready
Details and listed models

YORK Air-to-water split

An outdoor unit plus an indoor hydraulic station, joined by refrigerant lines. The pipework inside the house stays frost-free without glycol, and the indoor part is often quieter to place.

Air/water splitR32

YORK YKF Split with hot water tank

13 models

Output
4.3–16 kW
SCOP 35 °C
–
Max. flow
65 °C
BAFA WEP
No model on the list
ZUM
17 models listed
Zerofy
Via SG Ready
Details and listed models

Air/water splitR32

YORK YKF Split with hydronic box

13 models

Output
4.3–16 kW
SCOP 35 °C
–
Max. flow
65 °C
BAFA WEP
No model on the list
ZUM
12 models listed
Zerofy
Via SG Ready
Details and listed models

YORK series at a glance

Series Type Output SCOP 35 °C SCOP 55 °C Refrigerant Max. flow BAFA WEP ZUM SG Ready Modbus EEBUS
YKF Mono Air/water monobloc 4.2–16 kW – – R32 65 °C No model on the list 6 models listed Yes Yes –Not documented
YKF Split with hot water tank Air/water split 4.3–16 kW – – R32 65 °C No model on the list 17 models listed Yes Yes –Not documented
YKF Split with hydronic box Air/water split 4.3–16 kW – – R32 65 °C No model on the list 12 models listed Yes Yes –Not documented

Heating output is the figure in the manufacturer's datasheet; the basis (nominal output at A7/W35 or B0/W35, or design heat load) differs between brands, so check the datasheet before comparing. * = design heat load Pdesignh at 35 °C from the BAFA portal.

Sources

Specifications come from the manufacturer's datasheets linked above, grant status from the official lists below, checked November 4, 2026:

  1. brsheatpumps.co.uk/wp-content/uploads/2022/10/YKF-brochure-2022-1.pdf
  2. brsheatpumps.co.uk/wp-content/uploads/2023/07/YKF-Mono-brochure.pdf
  3. brsheatpumps.co.uk/wp-content/uploads/2023/07/YKF-IOM-5-16kW-Monoblock_.pdf
  4. brsheatpumps.co.uk/wp-content/uploads/2022/10/YKF_Operation-Guide_Controller.pdf
  5. brsheatpumps.co.uk/wp-content/uploads/2022/10/YKF_MCS-Certificate_May-2022.pdf
  6. www.bosch-homecomfortgroup.com/en/brands/york
  7. elan1.bafa.bund.de/zvi-ui/wep/waermepumpen
  8. lista-zum.ios.edu.pl/
  9. BAFA Wärmeerzeuger-Portal – Wärmepumpen – checked November 4, 2026
  10. Lista ZUM (Instytut Ochrony Środowiska) – checked November 4, 2026
  11. EEBUS certified devices – checked November 2, 2026

SG Ready is a label of the Bundesverband Wärmepumpe (BWP) e.V.; “Yes” means the manufacturer documents the two-input interface or declares it on the BAFA portal, not that the series carries the BWP label – the label list is at waermepumpe.de. EEBUS is a standard of the EEBus Initiative e.V.; Modbus is a registered trademark of Schneider Electric, licensed to the Modbus Organization. Product names, logos and photos belong to their manufacturers and are shown to identify the products. Grant data: BAFA Wärmeerzeuger-Portal and Lista ZUM (IOŚ-PIB) as of the dates shown; the SCOP at 55 °C in the BAFA tables is calculated by Zerofy from the portal's ηs value.

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