It can be used in the dry winter and also during the upcoming pollen season. Retail price: 43,000 yen Purchased in 2016, used for about 4 years and then stored. Operation confirmed. It shows some signs of use, but I cleaned it regularly, so it looks quite clean. Also, the dark brown color makes scratches less noticeable, which is a good thing. There are no smokers or pets in the family. It operates perfectly without any problems. Please consider it if you understand the condition as shown in the photos. Type: Humidifying Air Purifier Maximum applicable floor area: 31 tatami mats (approx. 51 square meters) Deodorizing function: Yes Timer function: Yes Sensors: Odor/Dust/Temperature/Humidity Tank capacity: 3.6L / Applicable tatami mats (wooden Japanese-style room): 11 tatami mats (approx. 18 square meters) / Applicable tatami mats (prefabricated Western-style room): 18 tatami mats (approx. 30 square meters) The instruction manual is not included, but you can download it from this site: https://torisetsu.biz/products/0000031735/