Secure up to 70 % subsidy for your ZEALUX heat pump now.*
Book on-site check now* BEG EM (German federal subsidy for efficient buildings – individual measures): 30 % basic subsidy + 16 % climate speed bonus + income bonus of up to 40 %, max. 70 % of eligible costs; 2026 conditions, application before placing the order, no guarantee of funding in individual cases.
Current subsidy conditions at the on-site check
Planning, the on-site check and the subsidy application take time – best to start now.The ZEALUX Plus R290 heats with a natural refrigerant, delivers flow temperatures up to 70 °C and operates down to −30 °C outdoor temperature. Planned and installed by certified installer partners – start with the free on-site check.
What’s inside the ZEALUX INVERBOOST PLUS R290.
Propane instead of synthetic refrigerants. As a monobloc, the refrigerant circuit stays entirely in the outdoor unit; the controller is integrated.
Also suitable for many existing buildings with radiators. The installer partner checks whether your radiators are suitable during the on-site check.
Operation down to −30 °C outdoor temperature – reliable warmth even in harsh winters.
Approx. 33–37 dB(A) sound pressure at 3 m distance, depending on model (manufacturer’s data).
Seasonal space heating energy efficiency 182 % at 35 °C and 139 % at 55 °C (7 kW model, Keymark/BAFA).
Control your heating via app and use surplus solar (PV) power for heat thanks to SG Ready.
* 3-year warranty, extendable to up to 7 years upon registration, installation by an authorised installer and annual maintenance. ZEALUX warranty terms apply.
Original ZEALUX product photos, uncropped and only resized for the web.
Product photos: ZEALUX (zealux.com, zealux-europe.com).
Heating replacement, renovation, new build or solar home: here’s how the Plus R290 fits you.
Replace it on your schedule – before the old boiler decides for you.
Make heating a fixed part of your plan – not an open question.
Heating that fits your home and your everyday life.
Turn solar power into heat – and keep everything in view.
Up to 70 % subsidy possible (BEG, depending on eligibility)**.
Up to 70 % of eligible costs* – under the 2026 conditions of BEG, Germany’s federal subsidy programme for energy-efficient buildings. Important: the application must be submitted before work starts. We support you with it.
Request on-site check with subsidy advice* BEG EM (German federal subsidy for efficient buildings – individual measures): 30 % basic subsidy + 16 % climate speed bonus + income bonus of up to 40 %, max. 70 % of eligible costs; 2026 conditions, application before placing the order, no guarantee of funding in individual cases.
** Eligible under BEG if the requirements are met. Amount and conditions are governed by the subsidy guidelines in force at the time; no guarantee in individual cases. The application must be submitted before work starts.
The installer partner calculates which size suits your home during the on-site check.
| ZEALUX INVERBOOST PLUS R290 | 7 kW | 10 kW | 12 kW | 16 kW |
|---|---|---|---|---|
| Model designation³ | XAH07Csi9-G | XAH10Csi9-G | XAH12Csi9-G | XAH16Csi9T-G |
| Heating capacity A2/W35³ | 6,72 kW | 9,78 kW | 10,79 kW | 15,3 kW |
| Heating capacity A−7/W35³ | 5,45 kW | 8,02 kW | 9,07 kW | 12,94 kW |
| Heating capacity night mode max.³ | 5,24 kW | 6,92 kW | 8,72 kW | 11,99 kW |
| Heating capacity / COP A7/W35⁴ | 7,13 kW / 4,51 | 10,30 kW / 4,53 | 12,12 kW / 4,57 | 16,18 kW / 4,56 |
| Heating capacity / COP A7/W55⁴ | 6,97 kW / 3,02 | 9,59 kW / 3,07 | 12,00 kW / 3,11 | 16,05 kW / 3,08 |
| Power supply⁴ | 1~ 220–240 V / 50 Hz | 1~ 220–240 V / 50 Hz | 1~ 220–240 V / 50 Hz | 3~ 380–415 V / 50 Hz |
| Rated current / minimum fuse⁴ | 13,0 A / 16 A | 17,0 A / 21 A | 21,0 A / 26 A | 9,5 A / 12 A |
| Refrigerant | R290 (propane) | R290 (propane) | R290 (propane) | R290 (propane) |
| Refrigerant charge | – | – | – | – |
| Design | Monobloc, integrated controller | Monobloc, integrated controller | Monobloc, integrated controller | Monobloc, integrated controller |
| Flow temperature | up to 70 °C | up to 70 °C | up to 70 °C | up to 70 °C |
| Operation down to outdoor temp. | −30 °C | −30 °C | −30 °C | −30 °C |
| Sound pressure at 3 m¹ | 36,7 dB(A) | 33,6 dB(A) | 32,8 dB(A) | 40,1 dB(A)⁴ |
| Sound pressure at 1 m⁴ | 46,2 dB(A) | 43,1 dB(A) | 42,3 dB(A) | 49,6 dB(A) |
| Sound power at A2³ | 57,5 dB(A) | 54,3 dB(A) | 53,5 dB(A) | 60,9 dB(A) |
| Sound power day mode max.³ | 57,8 dB(A) | 54,5 dB(A) | 53,8 dB(A) | 61,2 dB(A) |
| Sound power per ErP (A7/W47–55)³ | 57,2 dB(A) | 54,1 dB(A) | 53,3 dB(A) | 60,6 dB(A) |
| Sound power whisper mode (night)³ | 47,9 dB(A) | 46,9 dB(A) | 46,1 dB(A) | 51,5 dB(A) |
| SCOP 35 °C / 55 °C (EN 14825, average climate)⁵ | 4,63 / 3,54 | – | – | – |
| Seasonal space heating energy efficiency ηs 35 °C / 55 °C | 182 % / 139 %² | – | – | 175 % / 136 %⁶ |
| Efficiency class 35 °C / 55 °C | A+++² | – | – | A+++ / A++⁶ |
| Water connection⁴ | G 1" | G 1" | G 1" | G 1¼" |
| Recommended water flow⁴ | 1,2 m³/h | 1,7 m³/h | 2,1 m³/h | 2,8 m³/h |
| Recommended buffer tank⁴ | 60 l | 60 l | 60–80 l | 80–100 l |
| Net dimensions (W × D × H)⁴ | 1076 × 456 × 860 mm | 1052 × 453 × 1260 mm | 1052 × 453 × 1260 mm | 1190 × 440 × 1380 mm |
| Weight net / gross⁴ | 76 / 92 kg | 99 / 117 kg | 107 / 125 kg | 125 / 146 kg |
| Wi-Fi/app · SG Ready | ✓ · ✓ | ✓ · ✓ | ✓ · ✓ | ✓ · ✓ |
¹ Manufacturer’s data. ² Keymark/BAFA, 7 kW model. Further technical data on request. Warranty applies to all models. ³ ZEALUX data sheet INVERBOOST R290 (manufacturer’s data). ⁴ ZEALUX catalogue House 2025, data table INVERBOOST PLUS R290 (reference values; the rating plate is authoritative). ⁵ HP KEYMARK, DIN CERTCO reg. no. 011-1W0862 (7 kW). ⁶ EU product information sheet (EPREL reg. no. 2167115) for HP KEYMARK reg. no. 011-1W0926 (16 kW). – = no confirmed manufacturer data for this model yet.
ZEALUX INVERBOOST PLUS R290 with standard installation by our ZEALUX installer partners. You receive your final price as a fixed price after the free on-site check.
* With 46 % BEG subsidy (German federal programme: 30 % basic subsidy + 16 % climate speed bonus when replacing a working oil/coal/night-storage heater or a gas heater ≥ 20 years old, owner-occupiers, application before placing the order by 31.01.2027, depending on eligibility; grant paid out after completion). Your share = package price minus grant; no guarantee of funding in individual cases.
¹ Scope determined at the on-site check; additional work (e.g. radiator replacement, meter cabinet) charged by effort. Final price as a fixed price after the on-site check.
Package prices are “from” prices, total prices incl. 19 % VAT. The installer partner determines which capacity suits your home during the on-site check.
ZEALUX heat pumps and the manufacturer hold the following marks and certifications.
Heat Pump KeymarkEU quality mark
CEEU conformity
ErPEcodesign directive
RoHSHazardous substances directive
TÜVTest mark
BAFABAFA list (model-dependent)
SG ReadySmart grid label
ISO 9001Quality management
ISO 14001Environmental management
ISO 45001Occupational safetyISO 9001/14001/45001: manufacturer’s management systems. Information according to ZEALUX Europe / manufacturer.
Takes approx. 3 minutes. Your details are only sent as a request with the final click.
With these details we assign your request to a ZEALUX installer partner near you and give a first capacity estimate.
Not sure? Start with the free on-site check – a ZEALUX installer partner will advise you personally.
Pre-selected from the non-binding estimate – can be changed at any time. Package prices incl. VAT; *your share with 46 % BEG subsidy (German federal programme), depending on eligibility (details in the complete packages section).
Choose 1 to 3 preferred days (Mon–Fri, from the next working day for 4 weeks) and your preferred time window. This is an appointment request, not yet a fixed booking.
Applies to your preferred days. You can choose both.
So that we can confirm your appointment and reach you.
Optional: up to 5 photos (boiler, rating plate, boiler room). Photos are only sent to us together with your request.
Privacy: your details are processed exclusively by email via our web server at Strato AG in Berlin, not stored in a database and not transferred to third countries. No cookies, no tracking. A draft of your entries stays only locally in your browser until you submit. Learn more (German)
By submitting, you send us your appointment request.
By clicking “Send appointment request” you submit your request to Green Tuning Systems. Your appointment is only binding after our confirmation (within 24 h, working days). The on-site check is free and non-binding.
Questions about your request? Green Tuning Systems GmbH i. G. · Sales & Service Germany · info@greentuningsystems.de
With flow temperatures up to 70 °C, the Plus R290 is also suitable for many existing buildings with radiators. Whether your existing radiators are sufficient or some should be replaced is determined by the installer partner during the free on-site check, based on the heat load.
The manufacturer states approx. 33–37 dB(A) sound pressure at 3 m depending on model (7 kW: 36,7 dB(A), 10 kW: 33,6 dB(A), 12 kW: 32,8 dB(A)). The installer partner plans the right location and distances to neighbours with you during the on-site check.
Yes. The Plus R290 is SG Ready, so surplus PV power can be used specifically for heating and hot water. Via Wi-Fi and app you keep an eye on operation.
Currently up to 70 % subsidy is possible (BEG – Germany’s federal programme for efficient buildings, depending on eligibility). Crucially, the application must be submitted before work starts. Tick “I would like help with the subsidy application” in your request – we will guide you.
3-year warranty, extendable to up to 7 years – with registration, installation by an authorised installer and annual maintenance.
You choose the service and 1–3 preferred days online. We assign a certified ZEALUX installer partner near you and confirm your appointment by email within 24 h (working days). The on-site check covers heat load, installation site, radiators and hot water.
Our complete packages including standard hydraulic package, installation by a ZEALUX installer partner, commissioning and handover cost from 15.990 € (7 kW), 16.490 € (10 kW), 16.690 € (12 kW) or 16.990 € (16 kW) incl. VAT. With 46 % BEG subsidy (German federal programme: 30 % basic subsidy + 16 % climate speed bonus when replacing a working oil/coal/night-storage heater or a gas heater ≥ 20 years old, owner-occupiers, application before placing the order by 31.01.2027, depending on eligibility) your share starts at 8.635 € (7 kW), 8.905 € (10 kW), 9.013 € (12 kW) or 9.175 € (16 kW). The grant is paid out after completion. The exact scope – e.g. whether radiators need replacing or the meter cabinet needs adapting – is clarified at the free on-site check; you then receive your final price as a fixed price.
We recommend annual maintenance by the installer partner. It is also required for the warranty extension to up to 7 years. You can request a maintenance appointment directly here online.
Free on-site check, fixed-price quote, help with the subsidy application – and confirmation within 24 h (working days).
Request on-site check now