A cooling and ventilation outlet is described, including a shell configured to connect to an HVAC duct and an inner body that may be securely attached within the shell such that air from the HVAC duct passes through the inner body. The inner body may include: a directable air output nozzle, a first actuator configured to control a direction of the nozzle, an adjustable damper, a second actuator configured to control airflow through the inner body by actuating the adjustable damper, an indicator that may include at least one controllable visual element, a pressure sensor configured for use in determining airflow through the inner body, and circuitry including a network interface. The circuitry is configured to accept commands over a network, to accept readings from the pressure sensor, and to control the first actuator, the second actuator, and the indicator.

A cooling and ventilation outlet is described, including a shell configured to connect to an HVAC duct and an inner body that may be securely attached within the shell such that air from the HVAC duct passes through the inner body. The inner body may include: a directable air output nozzle, a first actuator configured to control a direction of the nozzle, an adjustable damper, a second actuator configured to control airflow through the inner body by actuating the adjustable damper, an indicator that may include at least one controllable visual element, a pressure sensor configured for use in determining airflow through the inner body, and circuitry including a network interface. The circuitry is configured to accept commands over a network, to accept readings from the pressure sensor, and to control the first actuator, the second actuator, and the indicator.

Provided in one embodiment is a method of modifying an air flow at least one location of a building structure, comprising: generating a first air flow at the at least one location of the building structure; and modifying a second air flow exterior to the building structure using the generated first air flow. An apparatus configured to modified an air flow is also provided.

Provided in one embodiment is a method of modifying an air flow at least one location of a building structure, comprising: generating a first air flow at the at least one location of the building structure; and modifying a second air flow exterior to the building structure using the generated first air flow. An apparatus configured to modified an air flow is also provided.

An economizer controller calibration method, comprising: sealing an economizer perimeter gap between the economizer frame and a Heating, Ventilating Air Conditioning (HVAC) system cabinet to reduce an uncontrolled outdoor airflow; determining a functional relationship between an economizer actuator voltage (x) and a damper position Outdoor Airflow Fraction (OAF) (y); monitoring the economizer actuator voltage (x) and measuring at least one airflow characteristic to calculate the damper position OAF (y) and obtain a set of x-versus-y data for at least two damper positions: closed, intermediate, and fully-open; calculating at least two coefficients of the functional relationship using the x-versus-y data; calculating a target economizer actuator voltage (x.sub.t) as a function of a required OAF.sub.r (y.sub.r) using the functional relationship; and positioning the damper using the target economizer actuator voltage (x.sub.t) to provide the target damper position OAF.sub.r (y.sub.r) within a tolerance of the required OAF.sub.r (y.sub.r).

An LED-based light can be installed in a conventional light fixture. The LED-based light can include a sensor operable to output a signal indicative of whether an area of one or more of the rooms is in an occupied state or a non-occupied state, and the LED-based light can also include an LED controller operable to control at least one LED in the light in response to the signal. Additionally, the LED-based light can include a transmitter operable to output the signal indicative of whether the area is in the occupied state or the non-occupied state to a building environment regulator.

An ion generating device (1) includes discharge electrodes (21⋅22) each having a plurality of electrically conductive members (25⋅26) which form respective tip surfaces (36⋅37). A longer dimension direction of the tip surfaces (36⋅37) is nonparallel to an air sending direction (A). This allows for efficient release of ions.

A venting device with a splash guard for deflection of splashing water entering the interior of the venting device has slats with a front section arranged at the exterior. Venting slots are formed between the front sections. At least one of the slats has a deflection section arranged at the interior and a central section connecting deflection section and front section. The front section and the deflection section are angled relative to the central section. The front section of the at least one slat in the operating position of the venting device extends from the central section toward the top side. The deflection section extends in the operating position from the central section toward the bottom side. The deflection section has a region oriented at an angle of less than 90° relative to the central section. A power tool with such a venting device is provided.

An air purifying apparatus includes a humidity controller and an intake cooling separator including one or more shafts and an outer wall. The intake cooling separator generates airflow to obtain the humidity-controlled air. The intake cooling separator swirls the obtained air around a first shaft included in the one or more shafts, thereby generating a pressure difference between air included in the obtained air and around the first shaft and air included in the obtained air and around the outer wall, and the pressure difference cools at least a part of the obtained air, and the pressure difference cools at least a part of the obtained air. The intake cooling separator performs centrifugal separation of water droplets generated from the cooled air. The one or more shafts are rotated to generate the airflow, to cause the swirl, and to perform the centrifugal separation.

A one piece dry wall extrusion grille frame comprising: a frame; pre-drilled installation holes in said frame; a lip for plastering; grille or register; capture recesses for plaster; the grille or register secured to the frame by a tether(s), cable(s) or wire(s) to ensure that the grille or register does not separate from the frame, and no additional hardware for drop in installation.