A ventilation fan with illumination includes a housing, a fan, and lighting equipment in the housing. The housing includes a first opening communicating with an air outlet, the first opening communicating with a duct, and a second opening that communicates with an interior space, The lighting equipment includes a light, a cover in the housing that surrounds the light periphery, the cover reflecting light and transmitting the light into the space through the second opening, and a restrictor that restricts passage of air between the light periphery and the lighting cover. An air intake gap is provided between a lower end of the cover and an edge of the second opening and introduced through the second opening and the air intake gap, is discharged through the first opening into the duct, the edge of the second opening being located below the lower end of the cover.

A fan assembly, and associated methods are shown. Fan assemblies and methods shown include nozzles within a housing of the fan. Fan assemblies and methods shown may provide water and/or fire suppression chemicals within a fan housing that provide characteristics such as increased thrust and motor cooling effects.

An air evacuator includes a dome having an exterior surface, an interior funneling surface, an air intake end, and an air outlet end, the dome being significantly wider at the air intake end than at said air outlet end. An inlet allows air from outside the air evacuator to be drawn into the dome. A vent tube is positioned to receive air from the air outlet end of the dome. An air pump is positioned to move air in the air evacuator and through a filter. One or more interior-aimed ultraviolet lamps positioned within the air evacuator treat and disinfect air as it is drawn into the air evacuator. A light trap extends substantially across the air intake end of the dome to prevent ultraviolet light from one or more ultraviolet lamps from shining directly out from within the dome through the air intake end of the dome.

A bottom-mounted whole house fan assembly includes an intake plenum mounted over an opening in a ceiling of a building. The intake plenum is supported on the ceiling in the attic of the building. One end of a flexible duct is connected to the intake plenum and the other end of the duct is connected to a fan so that the fan draws air in the building through the intake plenum and duct and exhausts the air in the attic from whence the air is vented to atmosphere. The fan is supported by at least one vertical strut that is connected to the ceiling at the lower end of the strut and to a housing of the fan at the upper end of the strut. A sound dampener is interposed between the strut and the fan housing and/or the ceiling beam to which the strut is attached.

A structure for a multi-story building comprises a first passageway constructed internally within a building being configured with a mount for a ducted condenser unit (DCU) of a split type, unitary air conditioning system to achieve a desired level of condenser based heat dissipation and with a plurality of penetrations to accommodate a conduit through which refrigerant circulates between inside and outside units of the air conditioning system; and a second passageway constructed internally within the building for receiving air discharged from the DCU the second passageway terminating at an opening of the building through which the discharged air is exhausted to the atmosphere. The passageways have walls that are essentially closed, with the exception of the wall that is formed with an opening through which the discharged air flows. One or both of the first and second passageways upwardly extends across at least two stories of the building.

A system and method for controlling activation and deactivation of an exhaust system for ventilating an enclosed space, such as a bathroom. The system includes a humidity sensor, a memory element, and a processing element. The sensor measures a humidity value in the space, and the memory element stores that value along with a series of previously measured humidity values. The memory also stores a look-up table which specifies activation and deactivation criteria for the exhaust system based on the measured humidity value and a normal humidity value. The processing element calculates the normal humidity value based on a weighted average of the stored series of humidity values, consults the look-up table, and controls the exhaust system as specified by the look-up table. The measured humidity value is added to the stored series of values at a first interval, and the normal humidity value is re-calculated at a second interval.

The utility model is intended for use in ventilation and air conditioning systems at industrial, housing, and social and administrative facilities for supply and exhaust ventilation of small premises with limited installation space. The technical result is achieved by improving the operation of supply and exhaust ventilation unit through the use of additional elements (sensors) that will allow to automate the process.

A modular fan housing configured to hold an array of motors and fans is provided. The modular fan housing is configured for use in an air-handling system that delivers air to a ventilation system for at least a portion of a building. The fan housing comprises a plurality of modular units configured to be stacked adjacent to one another in at least one row or column to form an array. The modular units each include an interior surface and have a front end and a back end that define a chamber. The chambers are configured to receive the motors and fans. Sound attenuation layers extend along at least a portion of the interior surface of the corresponding chambers. The sound attenuation layers are positioned between at least some of the adjacent chambers.

The air destratifier comprises: a casing (10), an intake tube (26) connected to the casing (10) to draw the air from the upper part of the space where the air destratifier is intended to be installed, and a centrifugal blower with a vertical axis of rotation (23) arranged downstream of the intake tube (26) to dispense to the space the air drawn through the intake tube (26). The air destratifier further comprises an air filter (14) arranged in the casing (10) upstream of the blower.

Various technologies for monitoring operation of an air contaminant mitigation system, such as a vapor intrusion and/or radon gas mitigation system, are disclosed. For example, in one embodiment, a monitoring system includes an air contaminant mitigation system to exhaust vapors from a contaminated area to a designated area and a sensor module coupled to the air contaminant mitigation system to generate sensor signals indicative of a sensor condition of the air contaminant mitigation system. The system may also include a sensor controller to receive the sensor signals from the sensor module and generate sensor data indicative of the sensor signals. Additionally, the system may include a data server to receive the sensor data from the sensor controller, store the sensor data in a local database, and transmit information based on the sensor data to a remote computing device.