The Model 2000 is a compact unit that will humidify homes ranging in size from 1,522 to 3,333 square feet or 12,174 to 26,667 cubic feet.

The  Model 2001 is a compact unit that will humidify homes ranging in size from 1,957 to 4,286 square feet or 15,652 to 34,286 cubic feet.

The  Model 2002 with fan is a compact unit that will humidify homes ranging in size from 2,065 to 4,524 square feet or 16,522 to 36,190 cubic feet.

Skuttle Bypass Flow-Thru Humidifiers are efficient, effective and easy to maintain!

Housed in handsome, sturdy thermoplastic cabinets, Skuttle’s high-capacity Flow-Thru Humidifiers are designed to accommodate today’s narrower ductwork, lower furnace temperatures and shorter blower cycles.

How Flow-Thru Humidifiers Work

Operating in conjunction with your home’s central heating system, a Bypass Flow-Thru Humidifier helps maintain indoor relative humidity at a balanced, healthier, more comfortable 30-to-45 percent. When the indoor humidity level drops below the pre-selected level, a switch inside the humidifier causes fresh water to flow across a porous evaporator pad, where it is exposed to warm, dry air forced through the humidifier by the furnace blower.

As the water evaporates, the heating system circulates humidified air throughout the home. A Skuttle Fan-Powered Flow-Thru (Model 2002) operates on the same principle as a Bypass Flow-Thru, except that the warm air is forced through the humidifier by an internal fan, rather than by the furnace blower.

Environmental Facts

Because these units employ the flow-thru principle of humidification, they use more water than other types of humidifiers. However, Skuttle engineers were the first to reduce Flow-Thru water consumption to the minimum necessary for effective humidification.

Electrical consumption is about the same as a 25-watt light bulb. The summer shutoff damper on bypass units increases efficiency and saves energy. Flow-Thrus do not produce harmful contaminants, nor do they release them into the air.


Flow-Thrus are the easiest of all central system humidifier types to maintain. Unless your water is extremely hard, one thorough cleaning per year should be sufficient. View a short video on pad replacement.

The humidifier and the connecting water valve must be turned OFF at the end of each heating season. On bypass units, the shutoff damper should be turned to SUMMER.

Skuttle’s 2000 Series Flow-Thru Humidifiers come with manual humidistats.

Contact a qualified HVAC contractor to help select and install the right Skuttle Whole House Humidifier for your home.

For more information and to see the terms our Limited One-Year Warranty, download the Owner’s Manual.

Visit our Skuttle Parts online store to see parts diagrams and order replacement parts.

Minimal Electricity= Uses minimal electricity

Water Efficiency  = Uses water efficiently

Pictured at left from top: Model 2000 Bypass Flow-Thru Humidifier; Model 2001 Bypass Flow-Thru Humidifier; Model 2002 Fan-Powered Bypass Flow-Thru Humidifier.