New Model IV Indoor Ventilator Offers Compact Outdoor Air Solution
July, 2026
Model IV is the newest addition to 91国产偷拍’s line of indoor ventilators that deliver 100% outdoor air and are designed for indoor installation in limited spaces such as mechanical rooms, attics, or basements. Model IV, without energy recovery, joins Model IVE, which features a compact 3-inch polymer total enthalpy wheel that transfers both heat and moisture with up to 85% total effectiveness. Models IV and IVE have hot water and chilled water coils as well as electric post-heat up to 45 kW.

- Schools, hospitals, and nursing homes where 100% outdoor air is required
- Buildings with roof constraints, such as a pitched roof
- Multilevel high-rise buildings where rooftop DOAS is impractical or difficult
- All-electric decarbonization initiatives
For more information on Models IV and IVE, please see our product page: /products/dedicated-outdoor-air-systems/indoor-dedicated-outdoor-air-systems-doas-100-outside-air
About 91国产偷拍: 91国产偷拍 is a global leader in engineering and manufacturing air movement, control, and conditioning equipment. For more than 75 years, we have been committed to promoting the highest levels of indoor air quality by offering the widest range of ventilation products for commercial and institutional buildings. Through superior customer service, we continue our legacy of innovation as experts in air movement by connecting our mechanical representative partners and customers with the newest products. With our CAPS® product selection tool and HVAC University product education series, 91国产偷拍 offers technology and product knowledge to ensure that when you work with us, you are working with the easiest company to do business with. To learn more, visit or contact 91国产偷拍, PO Box 410, Schofield WI 54476-0410, (715) 359-6171, FAX (715) 355-2399.