HTW IX21E Air Conditioner 12,000 BTU/h (Split - HTWS035IX21E-R32 - Class A++ - IA ECO+ - WiFi Included)


HTW IX21E Air Conditioner 12,000 BTU/h (Split - HTWS035IX21E-R32 - Class A++ - IA ECO+ - WiFi Included)
HTW IX21E Air Conditioner 12,000 BTU/h (Monosplit - HTWS035IX21E-R32 - Class A++ - IA ECO+ - WiFi Included)
The HTW IX21E 12,000 BTU/h (3.5 kW) is a high-power 1x1 split system for large spaces, equipped with predictive artificial intelligence that reduces consumption by up to 40% compared to conventional equipment. It integrates native Wi-Fi compatible with Alexa and Google Home, high-density multi-layer filters, and Golden Fin anti-corrosion coating, guaranteeing comfort, air quality, and durability in a single unit. Installation is facilitated by a support with integrated level, removable PCB, and quick access to cabling, reducing technician time for each intervention.
Main Features
- Artificial Intelligence with ECO+ mode: up to 40% energy savings through predictive modeling that analyzes millions of operating data points.
- With a cooling capacity of 12,000 BTU/h and a heating capacity of 12,992 BTU/h — ideal for large rooms and commercial spaces.
- Energy rating A++ (cooling) and A+ (heating) with SEER 6.5 and SCOP 4.1.
- Built-in Wi-Fi compatible with Alexa and Google Home — full control via smartphone.
- High-density multi-layer filters: catalyst + activated carbon + silver ions for superior air quality.
- Self-cleaning at 56°C eliminates mold, dust, and grease from inside the unit.
- Golden Fin anti-corrosion coating that protects the fins and extends the lifespan of the equipment.
- 3D airflow for even distribution at all angles of the room.
- R32 refrigerant — lower environmental impact and higher thermal efficiency.
- I-Feel function — temperature sensor in the remote control for precise control.
- Turbo function — maximizes power to quickly reach the desired temperature.
- Installation length up to 25 m and height up to 10 m between units.
- Condensate drain on both sides (right and left) for greater installation flexibility.
- Removable PCB and easy access to cabling for simplified maintenance and reduced intervention time.
- Support with integrated level for perfect horizontal installation.
- Electronic board with high-reliability UV coating .
- 10-year warranty on the compressor + 3-year general warranty.
What distinguishes the HTW IX21E HTWS035IX21E-R32?
What truly sets this model apart is its predictive artificial intelligence system with ECO+ mode, capable of learning from environmental conditions and user preferences to automatically determine the most efficient operating strategy — reducing energy consumption by up to 40% without sacrificing comfort. Combined with self-cleaning at 56°C and three-layer filters (catalyst, activated carbon, and silver ions), the HTWS035IX21E-R32 not only provides climate control but also keeps the air cleaner and the unit in better condition over time. The combination of native Wi-Fi, compatibility with Alexa and Google Home, and a design geared towards easy maintenance (removable PCB, cable access, motor replacement without disassembling the unit) makes it a benchmark choice for demanding professional and domestic installations.
General Information
| Mark | HTW |
| Model | HTWS035IX21E-R32 |
| Series | IX21E |
| Typology | Split 1x1 (indoor wall unit) |
| Refrigerator | R32 (0.49 kg) |
| Electrical Power Supply | 220-240 V / 1 Phase / 50 Hz |
| EAN code | 8435483876477 |
Technical Specifications
| Parameter | Cooling | Heating |
|---|---|---|
| Rated power | 3.5 kW (1.1~3.8 kW) | 3.81 kW (1.08~4.05 kW) |
| Rated power (BTU/h) | 11,935 BTU/h | 12,992 BTU/h |
| Consumption | 1,460 W (80~1,500 W) | 1,190 W (170~1,350 W) |
| Current | 6.3 A (0.8~6.7 A) | 5.4 A (1.4~6.0 A) |
| SEER / EER | 6.5 / 3.4 | — |
| SCOP / COP | — | 4.1 / 3.7 |
| Energy rating | A++ | A+ |
| Temperature range | 16°C ~ 32°C (selection) | Outdoor: -15~50°C (cold) / -20~24°C (heat) | |
| Feature | Indoor unit | Outdoor unit |
|---|---|---|
| Sound power | 56 dB | 63 dB |
| Sound pressure | 39/32/24/20 dB (A/M/L/S) | 56.0 dB |
| Airflow | 590/420/340/190 m³/h | 1,750 m³/h |
Energy Class — Cooling
Dimensions and Weight
| Parameter | Indoor unit | Outdoor unit |
|---|---|---|
| Net dimensions (L×W×D) | 813 × 289 × 201 mm | 720 × 495 × 270 mm |
| Gross dimensions (L×W×D) | 870 × 365 × 270 mm | 835 × 540 × 300 mm |
| Net/Gross Weight | 7.4 / 9.7 kg | 20.4 / 22.3 kg |
Connections
| Liquid/gas pipe | 1/4" - 3/8" |
| Maximum pipe length | 25 m |
| Maximum height between units | 10 m |
| Additional load (>5 m) | 12 g/m |
| Power supply | 2X2.5+T mm |
| Interconnection | 4X1.5+T mm |
HTW IX21E Technologies
| AI ECO+ Predictive | An artificial intelligence system that continuously analyzes environmental conditions and user preferences to automatically optimize operation, reducing consumption by up to 40%. |
| Self-cleaning 56°C | The equipment heats the evaporator to 56°C to eliminate mold, dust, mites, and grease, keeping the unit sanitized without the need for frequent manual intervention. |
| Golden Fin | Special anti-corrosion coating on the heat exchanger fins increases resistance to moisture, salt and pollution, significantly extending the equipment's lifespan. |
| 3D airflow | An air distribution system that combines horizontal and vertical movement to ensure uniform climate control throughout the room, eliminating hot or cold zones. |
| Multilayer filters | Three layers of filtration: catalyst (decomposition of organic compounds), activated carbon (odor absorption), and silver ions (bacteriostatic action) for cleaner air. |
| I-Feel | A temperature sensor incorporated into the remote control measures the temperature near the user (not near the unit), ensuring more precise and comfortable climate control. |
| Removable PCB | The printed circuit board is easily removable, allowing for the replacement of electronic components without the need to disassemble the entire internal unit. |
Frequently Asked Questions
This model is suitable for spaces between 30 and 50 m² (depending on insulation and sun exposure), such as large rooms, shops, offices, or medium-sized commercial spaces. For accurate calculations, we recommend a thermal study.
The ECO+ mode uses predictive artificial intelligence to learn from user behavior and environmental conditions, automatically adjusting the operating strategy to minimize energy consumption — potentially achieving savings of up to 40% compared to conventional operation.
Wi-Fi is built-in — no additional adapters are needed. Simply configure the app for complete remote control, including compatibility with Alexa and Google Home voice commands.
The HTW IX21E includes a 10-year warranty on the compressor and a 3-year general warranty on all other parts and labor (upon registration). If you have any questions, please contact us by phone (220 933 165), WhatsApp (917 387 532) or email ([email protected]).
Kontrolsat Protected Purchase
3 Years Warranty General warranty + 10 years on the compressor. | 72h Fast Shipping Fast delivery in mainland Portugal. |
€ Installments Payment in installments available | +3 Extra Guarantee Warranty extension available |
Questions? Contact us: +351 220 933 165 | +351 917 387 532 (WhatsApp) | [email protected]
Package Contents
- Indoor unit HTWS035IX21E-R32-I
- HTWS035IX21E-R32-O Outdoor Unit
- Remote control
- Batteries for remote control
- Installation and user manual
- Wall mount with integrated level.
- Screw kit and mounting accessories
- Brand
- HTW
- Reference
- HTWS035IX21E-R32
- Stock Online
- Available
- Stock Store
- Available
- Sound Pressure (Indoor / Minimum)
- 20dB
- Special Features
- Auto Restart
ECO+ Artificial Intelligence
WiFi Incluído - BTUs
- 12.000
- Classe Energética Frio
- A++
- Classe Energética Quente
- A+
- Garantia do Compressor
- 10 Anos
See our return policy to find specific return information for this product and steps on how to return in-store or by mail.
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Security Warning
This product complies with European legislation, namely the new Regulation (EU) 2023/988 of the European Parliament and of the Council of 10 May 2023 on General Product Safety (GPRS) which repealed Directive 2001/95/EC on general product safety and Directive 87/357/EEC on products imitating food.






