Defro heat pumps

Air/water monobloc 3 series

Defro (DEFRO R. Dziubeła sp.k.) is a family-owned Polish maker of boilers, stoves and heating equipment based in Ruda Strawczyńska near Kielce, founded in 1973. Its heat pumps are R290 air-to-water monoblocs built in Poland with Copeland scroll compressors: the inverter DHPi MONOTEC (8, 12, 16 and 20) with a DSi control box, a DFi hydraulic module or the DTi 200 hydraulic cabinet with a 200 l hot water tank, and the on/off units DHP PREMIUM (8, 12 and 16, with HB, HM or HF hydraulic modules) and DHP MONOTEC 8. Defro sells no hot water heat pumps.

Checked November 4, 2026 · Ruda Strawczyńska, Poland, founded 1973 · Manufacturer website · Datasheet library

Photo: Defro

Grant lists

BAFA WEP (Germany)

1 / 3 checked November 4, 2026

ZUM (Poland)

2 / 3 checked November 4, 2026

Defro in Zerofy

Zerofy has no integration for Defro 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.

Defro heat pump types

Air-to-water monoblock3

Defro 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

Defro DHPi MONOTEC

7 models

Output: 6–14 kW
SCOP 35 °C: 4.55–5.16
Max. flow: 70 °C
BAFA WEP: 4 models listed
ZUM: 4 models listed
Zerofy: Via SG Ready

Details and listed models

Air/water monoblocR290

Defro DHP PREMIUM

6 models

Output: 7.9–15.8 kW
SCOP 35 °C: –
Max. flow: 65 °C
BAFA WEP: No model on the list
ZUM: 3 models listed
Zerofy: Not supported

Details and listed models

Air/water monoblocR290

Defro DHP MONOTEC 8

1 model

Output: 7.9 kW
SCOP 35 °C: –
Max. flow: 65 °C
BAFA WEP: No model on the list
ZUM: No model on the list
Zerofy: Not supported

Details and listed models

Defro series at a glance

Series	Type	Output	SCOP 35 °C	SCOP 55 °C	Refrigerant	Max. flow	BAFA WEP	ZUM	SG Ready	Modbus	EEBUS
DHPi MONOTEC	Air/water monobloc	6–14 kW	4.55–5.16	3.55–4.07	R290	70 °C	4 models listed	4 models listed	Yes	?Not confirmed	?Not confirmed
DHP PREMIUM	Air/water monobloc	7.9–15.8 kW	–	–	R290	65 °C	No model on the list	3 models listed	–Not documented	–Not documented	–Not documented
DHP MONOTEC 8	Air/water monobloc	7.9 kW	–	–	R290	65 °C	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 4, 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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