Heat exchange efficiency 90% - Stiebel's heat exchange ventilation system (ducted type)
Heat exchange ventilation system [LWZ series]
We offer a wide range of high-end models of first-class heat exchange ventilation systems (enthalpy type / sensible type) equipped with a compact and powerful motor.
Type 1 Heat Exchange Ventilation System LWZ Series Stiebel Eltron has been leading the global heat exchange ventilation market since it began manufacturing Type 1 heat exchange ventilation systems in 1991. With product designs that leverage Stiebel's knowledge and expertise as a "leading company in passive house technology," we offer a full lineup of Type 1 heat exchange ventilation systems that maximize comfort and cost-effectiveness for homeowners. We provide optimal ventilation proposals tailored to each living environment and installation conditions. - Achieves a heat exchange rate of 90% with a large heat exchanger. By using one of the largest heat exchangers available for residential use, we have increased the contact area between exhaust and supply air, achieving a heat exchange rate of 90%. - Standard equipped with G3 or G4 class filters. This reduces duct contamination. Maintenance is simple, requiring only the cleaning of filters every three months. - Next-generation EC motor unaffected by weather or usage conditions. In cases where external wind is strong or other factors hinder ventilation, the fan speed is automatically adjusted to maintain the necessary ventilation volume at all times. - Available in wall-mounted and ceiling-embedded types.
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basic information
【Wall-mounted】 LWZ-280／JE* ●Duct connection diameter φ160/180mm ●Adjustable air volume 60–300m3/h ●External dimensions W 690 / D 534 / H 997mm ●Power supply voltage Single-phase 200V 50Hz/60Hz LWZ-170 EPlus ●Duct connection diameter φ160mm ●Adjustable air volume 50–300m3/h ●External dimensions W 677 / D 567 / H 765mm ●Power supply voltage Single-phase 200V 50Hz/60Hz LWZ-70E ●Duct connection diameter φ125mm ●Adjustable air volume 50–180m3/h ●External dimensions W 560 / D 290 / H 600mm ●Power supply voltage Single-phase 200V 50Hz/60Hz 【Ceiling-mounted】 LWZ-130／JE* ●Duct connection diameter φ125mm ●Adjustable air volume 50–160m3/h (180m3/h during rapid ventilation) ●External dimensions W 998 / D 517 / H 237mm ●Power supply voltage Single-phase 100V 50Hz/60Hz *JE is a total heat type For details, please refer to the catalog or website.
Price range
P3
Delivery Time
P3
Applications/Examples of results
For more details, please refer to the catalog or website, or feel free to contact us.
Detailed information
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Type 1 Heat Exchange Ventilation System LWZ-280 (Sensible Heat Type) / LWZ-280JE (Total Heat Type) A high air volume type suitable for residential floor areas of approximately 270m². The total heat type heat exchange element can also be washed with water. With a built-in preheater, it maintains the planned ventilation volume and high heat exchange even during cold periods.
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Type 1 Heat Exchange Ventilation System LWZ-170EPlus (Wall-mounted Type) Compatible with residential floor areas of approximately 230m². Features a bypass function for outdoor cooling operation and a built-in preheater, achieving energy savings and reliable ventilation year-round.
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Type 1 Heat Exchange Ventilation System LWZ -70E (Wall-Mounted Type) Sensible Heat Type Compact type suitable for residential floor areas up to 140m².
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Type 1 Heat Exchange Ventilation System LWZ-130J (Sensible Heat Type) / JE (Total Heat Type) Compatible with residential floor areas up to 140m². The first ceiling-embedded type from a European manufacturer (according to our research). Ensures airtightness with high molding technology, achieving an effective ventilation rate of approximately 99%. Prevents fresh air (supply) and contaminated air (exhaust) from mixing within the unit. Utilizes a powerful and highly efficient motor from ebmpapst, enabling large air volume while reducing noise.
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Company information
"How to enrich people's lives with less energy and greater efficiency." Stiebel is a comprehensive manufacturer of residential equipment based in Holzminden, Germany, established in 1924 under this philosophy. Starting with electric water heaters, heat pumps, ventilation systems, and storage heating systems that have been manufactured since its founding, it is now globally recognized as a leading company in passive houses and renewable energy equipment. The Japan branch was established in 1986 and is headquartered in Shinagawa, Tokyo, also featuring a showroom. Since beginning the import and sale of European residential equipment, the company has been dedicated to providing energy-saving products while always being mindful of creating a "comfortable" living environment. We are responsible for localization to Japanese specifications, as well as creating proposals for ventilation and heating.