Photo: Buderus
Air/water monoblocR290
Buderus Logatherm WLW166i MBB AR
Air-to-water monoblock · 7 models
R290 monoblock with a hermetically sealed refrigerant circuit in five sizes (4, 6, 7, 10 and 13 kW class); indoor unit as T180 (180 l cylinder) or E (external cylinder). ErP sound power level 48 to 51 dB(A) as listed by Buderus. The linked data sheet is the ErP sheet of the 4 kW variant.
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)
20 models listed
20 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) | 4–12.8 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 (power limitation per §14a EnWG, via LAN- und Funkmodul MX400) |
| Cloud API | not confirmed (MyBuderus) |
| §14a EnWG control | via EEBUS |
| Local interfaces | EEBUS (via LAN- und Funkmodul MX400) |
Source: www.buderus.de/resource/blob/106768/7ac43a1bc9b202c214ef2... · www.buderus.de/resource/blob/84532/5f174d97fdbaf3201210da... · www.buderus.de/de/foerderungen/verordnungen-gesetze/enwg-...
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 20
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 |
|---|---|---|---|---|---|---|
| Buderus Logaplus WP400 WLW166i MBB T (WLW-10 MBB AR P3 & Logatherm WLW166i MBB T180, Zubehör) | 16020078 | 5.01 | 3.93 | 49.0 dB(A) | R290 | Yes |
| Buderus Logaplus WP400 WLW166i MBB T (WLW-13 MBB AR P3 & Logatherm WLW166i MBB T180, Zubehör) | 16020079 | 5.04 | 3.88 | 51.0 dB(A) | R290 | Yes |
| Buderus Logaplus WP400 WLW166i MBB T (WLW-4 MBB AR & Logatherm WLW166i MBB T180, Zubehör) | 16020074 | 4.99 | 3.6 | 48.0 dB(A) | R290 | Yes |
| Buderus Logaplus WP400 WLW166i MBB T (WLW-6 MBB AR & Logatherm WLW166i MBB T180, Zubehör) | 16020076 | 4.98 | 3.65 | 48.0 dB(A) | R290 | Yes |
| Buderus Logaplus WP400 WLW166i MBB T (WLW-7 MBB AR & Logatherm WLW166i MBB T180, Zubehör) | 16020077 | 4.96 | 3.68 | 48.0 dB(A) | R290 | Yes |
| Buderus Logaplus WP401 WLW166i MBB E (WLW-10 MBB AR P3 & Logatherm WLW176i.2 E, Zubehör) | 16020083 | 5.01 | 3.93 | 49.0 dB(A) | R290 | Yes |
| Buderus Logaplus WP401 WLW166i MBB E (WLW-13 MBB AR P3 & Logatherm WLW176i.2 E, Zubehör) | 16020084 | 5.04 | 3.88 | 51.0 dB(A) | R290 | Yes |
| Buderus Logaplus WP401 WLW166i MBB E (WLW-4 MBB AR & Logatherm WLW176i.2 E, Zubehör) | 16020080 | 4.99 | 3.6 | 48.0 dB(A) | R290 | Yes |
| Buderus Logaplus WP401 WLW166i MBB E (WLW-6 MBB AR & Logatherm WLW176i.2 E, Zubehör) | 16020081 | 4.98 | 3.65 | 48.0 dB(A) | R290 | Yes |
| Buderus Logaplus WP401 WLW166i MBB E (WLW-7 MBB AR & Logatherm WLW176i.2 E, Zubehör) | 16020082 | 4.96 | 3.68 | 48.0 dB(A) | R290 | Yes |
| Logaplus M WLW166i-10 MBB AR E (WLW-10 MBB AR P3 & Logatherm WLW176i.2 E) | 16019925 | 5.01 | 3.93 | 49.0 dB(A) | R290 | Yes |
| Logaplus M WLW166i-10 MBB AR T180 (WLW-10 MBB AR P3 & Logatherm WLW166i MBB T180) | 16019926 | 5.01 | 3.93 | 49.0 dB(A) | R290 | Yes |
| Logaplus M WLW166i-13 MBB AR E (WLW-13 MBB AR P3 & Logatherm WLW176i.2 E) | 16019927 | 5.04 | 3.88 | 51.0 dB(A) | R290 | Yes |
| Logaplus M WLW166i-13 MBB AR T180 (WLW-13 MBB AR P3 & Logatherm WLW166i MBB T180) | 16019928 | 5.04 | 3.88 | 51.0 dB(A) | R290 | Yes |
| Logaplus M WLW166i-4 MBB AR E (WLW-4 MBB AR & Logatherm WLW176i.2 E) | 16019314 | 4.99 | 3.6 | 48.0 dB(A) | R290 | Yes |
| Logaplus M WLW166i-4 MBB AR T180 (WLW-4 MBB AR & Logatherm WLW166i MBB T180) | 16019317 | 4.99 | 3.6 | 48.0 dB(A) | R290 | Yes |
| Logaplus M WLW166i-6 MBB AR E (WLW-6 MBB AR & Logatherm WLW176i.2 E) | 16019315 | 4.98 | 3.65 | 48.0 dB(A) | R290 | Yes |
| Logaplus M WLW166i-6 MBB AR T180 (WLW-6 MBB AR & Logatherm WLW166i MBB T180) | 16019318 | 4.98 | 3.65 | 48.0 dB(A) | R290 | Yes |
| Logaplus M WLW166i-7 MBB AR E (WLW-7 MBB AR & Logatherm WLW176i.2 E) | 16019316 | 4.96 | 3.68 | 48.0 dB(A) | R290 | Yes |
| Logaplus M WLW166i-7 MBB AR T180 (WLW-7 MBB AR & Logatherm WLW166i MBB T180) | 16019319 | 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 |
|---|---|
| Buderus Logatherm WLW166i-10 SP AR P3 B | PW-113624 |
| Buderus Logatherm WLW166i-10 SP AR P3 E | PW-213614 |
| Buderus Logatherm WLW166i-10 SP AR P3 T190 | PW-513603 |
| Buderus Logatherm WLW166i-12 SP AR P3 B | PW-813625 |
| Buderus Logatherm WLW166i-12 SP AR P3 E | PW-913615 |
| Buderus Logatherm WLW166i-12 SP AR P3 T190 | PW-313604 |
| Buderus Logatherm WLW166i-14 SP AR P3 B | PW-613626 |
| Buderus Logatherm WLW166i-14 SP AR P3 E | PW-713616 |
| Buderus Logatherm WLW166i-14 SP AR P3 T190 | PW-613607 |
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 Buderus heat pumps
Sources
- Datasheet: b5-web-product-data-service.azurewebsites.net/pdf/de/7739625422.pdf
- Product page: www.buderus.de/de/logathermwlw166imbbar
- Control and connectivity: www.buderus.de/resource/blob/106768/7ac43a1bc9b202c214ef21431c3e7b90/system-g...
- Control and connectivity: www.buderus.de/resource/blob/84532/5f174d97fdbaf3201210da560b2364a7/18_Buderu...
- Control and connectivity: www.buderus.de/de/foerderungen/verordnungen-gesetze/enwg-62718
- 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.
Heat with your own solar power
Zerofy moves your heat pump's runtime into the hours with surplus solar power or low prices – automatically.
Get Zerofy