Weheat heat pumps

Air/water monobloc 3 series

Weheat is a Dutch heat pump maker that designs and builds its units at its own headquarters and factory in Duizel near Eindhoven; it belongs to the WeFabricate group. The range consists of R290 air-to-water monoblocs - Flint, Sparrow and the flat-roof Blackbird - each sold as a hybrid next to a gas boiler or as an all-electric system, mainly in the Netherlands and also in Germany. Every unit has a 4G connection and is optimised remotely by Weheat's own software; a fourth model, Swift, is announced for 2027.

Checked November 2, 2026 · Duizel, Netherlands · Manufacturer website · Datasheet library

Weheat Sparrow

Photo: Weheat

Grant lists

BAFA WEP (Germany)

0 / 3 checked November 4, 2026

ZUM (Poland)

0 / 3 checked November 4, 2026

Weheat in Zerofy

Zerofy has no integration for Weheat 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.

Weheat heat pump types

Air-to-water monoblock3

Weheat 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 monoblocR290

Weheat Blackbird

2 models

Output
9–11 kW
SCOP 35 °C
4.7
Max. flow
–
BAFA WEP
No model on the list
ZUM
No model on the list
Zerofy
Not supported
Details and listed models

Air/water monoblocR290

Weheat Sparrow

1 model

Output
9 kW
SCOP 35 °C
4.78
Max. flow
–
BAFA WEP
No model on the list
ZUM
No model on the list
Zerofy
Not supported
Details and listed models

Air/water monoblocR290

Weheat Flint

1 model

Output
6 kW
SCOP 35 °C
–
Max. flow
–
BAFA WEP
No model on the list
ZUM
No model on the list
Zerofy
Not supported
Details and listed models

Weheat series at a glance

Series Type Output SCOP 35 °C SCOP 55 °C Refrigerant Max. flow BAFA WEP ZUM SG Ready Modbus EEBUS
Blackbird Air/water monobloc 9–11 kW 4.7 – R290 – No model on the list No model on the list ?Not confirmed ?Not confirmed ?Not confirmed
Sparrow Air/water monobloc 9 kW 4.78 – R290 – No model on the list No model on the list ?Not confirmed ?Not confirmed ?Not confirmed
Flint Air/water monobloc 6 kW – – R290 – No model on the list No model on the list ?Not confirmed ?Not confirmed ?Not confirmed

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 2, 2026:

  1. www.weheat.com/en-nl/producten/blackbird
  2. www.weheat.com/en-nl/producten/sparrow
  3. www.weheat.com/en-nl/producten/flint
  4. www.weheat.com/en-nl/producten/swift
  5. www.weheat.com/en-nl/over-ons
  6. www.weheat.com/de-de/producten/blackbird
  7. github.com/wefabricate/wh-python
  8. pypi.org/project/weheat/
  9. support.weheat.nl/s/article/Is-er-een-offici%C3%ABle-Home-Assistant-integratie
  10. www.home-assistant.io/integrations/weheat/
  11. elan1.bafa.bund.de/zvi-ui/wep/waermepumpen
  12. lista-zum.ios.edu.pl/
  13. BAFA Wärmeerzeuger-Portal – Wärmepumpen – checked November 4, 2026
  14. Lista ZUM (Instytut Ochrony Środowiska) – checked November 4, 2026
  15. 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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