HKS Lazar heat pumps
Air/water monobloc 1 series
HKS Lazar is a Polish manufacturer of pellet and wood boilers based in Jastrzębie-Zdrój (Silesia). Its only heat pump is the HTi20, an inverter air-to-water monoblock with the natural refrigerant R290 (propane) in three sizes of 8, 12 and 16 kW, combined with a Smart, SmartTower or Integra indoor module. The HTi20 is also sold in Germany.
Checked November 4, 2026 · Jastrzębie-Zdrój, Poland · Manufacturer website · Datasheet library
Photo: HKS Lazar
Grant lists
BAFA WEP (Germany)
1 / 1 checked November 4, 2026
ZUM (Poland)
1 / 1 checked November 4, 2026
HKS Lazar in Zerofy
Zerofy has no integration for HKS Lazar 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.
HKS Lazar heat pump types
HKS Lazar 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
HKS Lazar HTi20
3 models
- Output
- 8–16 kW
- SCOP 35 °C
- 4.49–4.82
- Max. flow
- 60 °C
- BAFA WEP
- 3 models listed
- ZUM
- 3 models listed
- Zerofy
- Via SG Ready
HKS Lazar series at a glance
| Series | Type | Output | SCOP 35 °C | SCOP 55 °C | Refrigerant | Max. flow | BAFA WEP | ZUM | SG Ready | Modbus | EEBUS |
|---|---|---|---|---|---|---|---|---|---|---|---|
| HTi20 | Air/water monobloc | 8–16 kW | 4.49–4.82 | 3.31–3.68 | R290 | 60 °C | 3 models listed | 3 models listed | Yes | –Not documented | –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:
- www.hkslazar.pl/pompy-ciepla
- www.hkslazar.pl/inwerterowa-pompa-ciepla-hti20
- www.hkslazar.de/wrmepumpe-hti20
- www.hkslazar.pl/instrukcje-pompy-ciepla
- www.hkslazar.pl/file/download/742/571/
- www.hkslazar.pl/karty-produktow-pompy-ciepla
- www.hkslazar.pl/file/download/746/558/
- www.hkslazar.pl/informacje-o-produkcje-pompy-ciepla
- www.hkslazar.pl/ulotki-pompy-ciepla
- www.hkslazar.pl/file/download/723/1025/
- elan1.bafa.bund.de/zvi-ui/wep/waermepumpen
- lista-zum.ios.edu.pl/
- BAFA Wärmeerzeuger-Portal – Wärmepumpen – checked November 4, 2026
- Lista ZUM (Instytut Ochrony Środowiska) – checked November 4, 2026
- 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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