The variety of makes in the ventilator field might well cause the homeowner to pause in perplexity. But the principle behind them all is the same. A motor-driven fan - set in the kitchen wall or window and connected with the light socket - whisks out stale air or cooking fumes, drawing on the rest of the house for the replacing air and so maintaining a healthful circulation throughout. If a non-odorous activity - like ironing - is in progress, many of the fans will reverse obligingly and blow cool air into the kitchen fan from outside. Installation does not interfere with the opening and closing of the window.

Size And Speed

The size of the fan itself may differ in the various models. The speed with which it operates may be greater or less, to adapt the equipment to the opposing force of the wind whistling around the sixteen-story apartment house, or to restrain the electrical current to the less exacting conditions of more equable situations. Where the wall can be cut, the cabinet type can be specified by the architect and built right into the walls, leaving the entire window for its usual function. The built-in ventilator should not, if possible, be located directly under an upstairs window to draw any of the fumes back into the house again. And if it can be placed on the side away from the prevailing wind, this still further adds to its effectiveness. The rented home will welcome the easily removable portable window type of ventilator. Either simplicity or extra refinement of construction makes it possible to obtain a ventilator satisfactory for either the modest or pretentious home.

1 Adapted from "Ten Good Kitchen Ventilators and How They Do Their Work," House and Garden, October, 1930. Reprinted by permission of House and Garden, Conde Nast Publications, Inc. (copyright, 1931).

In the list which follows will be found a ventilator suitable for every need. In ordering, the size of the window must be given, if this type of ventilator is wanted; also the kind of electric current used. This latter information can be secured from the company which furnishes lighting current.

Various Good Types

One ventilator of quality, which we will call A, is built by a company of forty-eight years' ventilating experience. The guaranteed motor is the product of two eminent electrical companies. The company in question makes models for the double-hung window, the casement window, and also to build right into the wall. The portable window model is set in a double-strength glass panel, to let in all light possible. The frame is strong, attractive in its vitreous porcelain finish and easily cleaned.

The fan itself is an eight-bladed aluminum propeller of special design which handles the maximum amount of air at a minimum speed. It costs only 1/3 of a cent per hour to run, at an eight cent current rate, and the ordinary size will handle 600 cubic feet of air per minute. Then there is a stronger model, handling 1150 cubic feet of air per minute. As the motor is reversible, air can be drawn either in or out, quietly and without noticeable vibration, and there is a safety-locking device to prevent accidental dislodgement of the ventilator.

Another splendid ventilator is B. This, too, will either set into the window or build right into the wall (the latter type is cleverly constructed with rattle-proof doors, operated by the lever which controls the motor). There is also a separate fan for special purposes, for the window type fits only the window which opens up and down - the so-called "double-hung" type. The fan is set into an adjustable panel of pressed steel, finished in pearl or mahogany coloring, and from the three stock panels - 26" to 36", 36" to 46", and a special for the window 22" to 26" - any size of window can be fitted out.

With this fan, a twelve-inch blade operates quietly and efficiently on about as much current as needed by a fifty-watt bulb. The improved blade design and setting direct the air forward, so that the velocity is the same at the center as at the tip. It operates at a relatively low speed and is particularly effective where there is not too great wind resistance from the outside. There is a choice of two speeds with this type of ventilator. The lower is reversible, while the higher draws the air out only.

Considerable choice in size and price is possible when one selects ventilator C, to keep the kitchen cool and up-to-date. The manufacturers of this line claim to be the only ones who guarantee their product for a full five years. These fans may be bought separately; with adjustable panel - either wood, glass or metal - for insertion in a window, or, in the wall-box type, to be built directly into the house.