Photo: Bosch
Air/water monoblocR290
Bosch Compress 3800i AW
Air-to-water monoblock · 7 models
R290 air-to-water heat pump in five sizes, 4 to 13 kW (4, 6 and 7 kW with the small outdoor unit, 10 and 13 kW with the large one), combined with an indoor unit AWEi or AWMi. Controlled through the HomeCom Easy app; works with the Bosch Energiemanager for PV self-consumption.
Grant lists
Grants depend on the exact model being on the official list. The counts below are the entries of this series we found in each list.
BAFA WEP (Germany)
10 models listed
10 models of this series are eligible in the BAFA Wärmeerzeuger-Portal, the list the German BEG heat pump grant depends on.
checked November 4, 2026 · See the entries
ZUM (Poland)
9 models listed
9 models of this series are on the Lista ZUM, which the Polish Czyste Powietrze grant requires.
checked November 4, 2026 · See the entries
Specifications
| Type | Air-to-water monoblock |
|---|---|
| Design heat load Pdesignh (35 °C) | 4.3–12.8 kW |
| SCOP at 35 °C | 4.96–5.04 |
| SCOP at 55 °C | 3.6–3.93 |
| Refrigerant | R290 (GWP 0.02) |
| Outdoor sound power | 48–51 dB(A) |
| Max. flow temperature | 75 °C |
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.
Control and connectivity
| SG Ready | Yes (declared by the manufacturer on the BAFA portal) |
|---|---|
| Modbus | Not documented |
| EEBUS | Yes (incl. energy management, via Connect-Key K 40 RF) |
| Cloud API | partner programme (HomeCom Easy) – Partner Web API / Partner Local API (partner programme, K40 gateway); Open Web API announced for end of 2026 |
| §14a EnWG control | via EEBUS |
| Local interfaces | EEBUS (via Connect-Key K 40 RF), KNX (via KNX 20 Modul + Connect-Key K 40 RF) |
Source: www.bosch-homecomfort.com/de/de/wohngebaeude/wissen/sekto... · www.bosch-homecomfort.com/at/de/wohngebaeude/wissen/schni...
Models in this series
Model codes as the manufacturer documents them. The official list entries, with their own naming, follow below.
Models on the BAFA list 10
Eligible in the BAFA Wärmeerzeuger-Portal on November 4, 2026. Anlagennummer is the entry's number in the portal; SCOP at 55 °C is derived from the portal's ηs value.
| Model | Anlagennummer | SCOP 35 °C | SCOP 55 °C | Sound | Refrigerant | SG Ready |
|---|---|---|---|---|---|---|
| Compress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi) | 16019891 | 5.01 | 3.93 | 49.0 dB(A) | R290 | Yes |
| Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) | 16019892 | 5.01 | 3.93 | 49.0 dB(A) | R290 | Yes |
| Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi) | 16019893 | 5.04 | 3.88 | 51.0 dB(A) | R290 | Yes |
| Compress CS3800iAW 13 OM-T (CS3800iAW 13 O-T + AWMi) | 16019894 | 5.04 | 3.88 | 51.0 dB(A) | R290 | Yes |
| Compress CS3800iAW 4 OE-S (CS3800iAW 4 O-S + AWEi) | 16019269 | 4.99 | 3.6 | 48.0 dB(A) | R290 | Yes |
| Compress CS3800iAW 4 OM-S (CS3800iAW 4 O-S + AWMi) | 16019273 | 4.99 | 3.6 | 48.0 dB(A) | R290 | Yes |
| Compress CS3800iAW 6 OE-S (CS3800iAW 6 O-S + AWEi) | 16019271 | 4.98 | 3.65 | 48.0 dB(A) | R290 | Yes |
| Compress CS3800iAW 6 OM-S (CS3800iAW 6 O-S + AWMi) | 16019274 | 4.98 | 3.65 | 48.0 dB(A) | R290 | Yes |
| Compress CS3800iAW 7 OE-S (CS3800iAW 7 O-S + AWEi) | 16019272 | 4.96 | 3.68 | 48.0 dB(A) | R290 | Yes |
| Compress CS3800iAW 7 OM-S (CS3800iAW 7 O-S + AWMi) | 16019275 | 4.96 | 3.68 | 48.0 dB(A) | R290 | Yes |
Models on the ZUM list 9
On the Lista ZUM on November 4, 2026, with the list's own device number.
| Model | ZUM id |
|---|---|
| Bosch Compress 3800i AW CS3800iAW 4 OE-S | PW-319291 |
| Bosch Compress 3800i AW CS3800iAW 4 OM-S | PW-419295 |
| Bosch Compress 3800i AW CS3800iAW 4 OMH-S | PW-219296 |
| Bosch Compress 3800i AW CS3800iAW 6 OE-S | PW-119292 |
| Bosch Compress 3800i AW CS3800iAW 6 OM-S | PW-719294 |
| Bosch Compress 3800i AW CS3800iAW 6 OMH-S | PW-019297 |
| Bosch Compress 3800i AW CS3800iAW 7 OE-S | PW-519290 |
| Bosch Compress 3800i AW CS3800iAW 7 OM-S | PW-919293 |
| Bosch Compress 3800i AW CS3800iAW 7 OMH-S | PW-819298 |
Entries as published in the official lists on the date shown; names and numbers are copied verbatim. Check the list for your exact model before you order.
More Bosch heat pumps
Sources
- Product page: www.bosch-homecomfort.com/de/de/ocs/wohngebaeude/compress-3800i-aw-21901212-p/
- Control and connectivity: www.bosch-homecomfort.com/de/de/wohngebaeude/wissen/sektorenkopplung/schnitts...
- Control and connectivity: www.bosch-homecomfort.com/at/de/wohngebaeude/wissen/schnittstellen-von-bosch-...
- BAFA Wärmeerzeuger-Portal – Wärmepumpen – checked November 4, 2026
- Lista ZUM (Instytut Ochrony Środowiska) – checked November 4, 2026
- EEBUS certified devices – checked November 2, 2026
All figures are taken from the manufacturers' datasheets and the official BAFA and ZUM lists on the date shown and may have changed since. This is not grant advice – check the list and your grant conditions before you order. Zerofy is not affiliated with any of the manufacturers listed.
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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