Disclosed are methods for measuring building health index using some mandatory and set of optionally configured parameters and utilizing building monitoring system having a connection to sensors in or pertaining to a building, and including central computing environment and one or more display devices showing the measurement. A building utilizing this method may be installed with one or more sensors, and which may be communicating to a locally installed communication device or a centrally installed computing environment that can collect the measurements over a period.

An energy efficient heating, ventilation, and air conditioning (HVAC) system includes a variable capacity compressor configured to operate at a plurality to operating capacities and a control system communicatively coupled to the variable capacity compressor. The control system is configured to receive data indicative of a temperature within a conditioned space, receive data indicative of a set point temperature of the conditioned space, initialize operation of the variable capacity compressor, and ramp up operation of the variable capacity compressor to an intermediate operating capacity of the plurality of operating capacities during initial operation of the variable capacity compressor, where the intermediate operating capacity is less than a full operating capacity of the plurality of operating capacities.

A variable air flow air conditioning (HVAC) system is provided, along with methods of use thereof. In example embodiments, one or more variable speed fans or air-moving devices are in communication with ducts connecting one or more zones of a structure or other space to be air conditioned. Zone temperature sensors and air flow measurement are provided to obtain particular measurements relative to the zone it is serving while communicating with a central control. Optionally, a distributed control system can be provided such that zone sensors communicate with both the central control and a respective zone controller. The control system collects and processes multiple data sets to dynamically and proportionally adjust the volumetric air flows of each of the zones to satisfy any loads or heating/cooling demands while also maintaining a net volumetric air flow across a coil of the indoor heat transfer unit within a preset range.

A ventilation apparatus includes: a housing including a first inlet through which outside air is sucked, a second inlet through which room air is sucked, a first outlet through which air is supplied to an indoor space, and a second outlet through which air is discharged to an outdoor space; an outside temperature sensor configured to measure a first temperature of the outside air; a room temperature sensor configured to measure a second temperature of the room air; a total heat exchanger configured to perform heat exchange between the outside air and the room air; a first blower communicating with the first outlet; a second blower communicating with the second outlet; and a processor to perform a drying operation for the total heat exchanger by operating at least one of the first blower or the second blower, based on a difference value between the first temperature and the second temperature.

Methods and related systems are disclosed for determining a temperature of an indoor space with a plurality of onboard sensors of a device of a climate control system. In an embodiment, the method includes detecting raw temperatures with the plurality of sensors. In addition, the method includes determining a combined temperature offset for a first sensor of the plurality of sensors based on outputs of a plurality of models. The plurality of models are to determine a plurality of temperature offsets for the first sensor based on different airflow directions relative to the device. Further, the method includes adjusting the raw temperature detected by the first sensor with the combined temperature offset.

A heating, ventilating, and air conditioning (HVAC) system is provided. The HVAC system includes a non-transitory computer readable medium that includes instructions that are configured to cause a processor to generate a custom application for an HVAC unit in response to an inquiry regarding the HVAC unit. The custom application comprises a custom sequence of equipment operation of the HVAC unit, and the custom application is configured to regulate operation of components of the HVAC unit. Moreover, the custom application comprises operating parameters and control parameters associated with the HVAC unit.

An HVAC system includes a first air quality sensor and a second air quality sensor. The system contains a controller which calculates a differential between the first air quality sensor and the second air quality sensor. The differential is compared to a threshold. If the threshold is satisfied, a fan is engaged which may, reducing the air quality differential as sensed by the first and second air quality sensor.

The present disclosure proposes a method for when the Heating, Ventilation, and Air Conditioning (HVAC) is called for by a thermostat, the GeoFlo HVAC System first exhausts a heat sink in the basement, before calling for an evaporator to be activated. When the heat sink in the basement is cooling the conditioned space, by geothermally dispersing heat into the earth, the GeoFlo HVAC turns off the evaporator. Alternatively, the system acts as a substitute for an AC evaporator. Variations of the GeoFlo HVAC system and a control box designed to move heat from one area of a building to another using the existing HVAC system are also disclosed.

A HVAC control system comprising a user interface adapted to receive comfort feedback from a user. A processor is adapted to receive the comfort feedback and input data corresponding to one or more comfort factors and respective values of the comfort factors. The processor is adapted to build a comfort model for the user based on the comfort feedback and the input data, with the comfort model correlating a comfort score to one or more values of one or more of the comfort factors. The processor is configured to adjust one or more functions of an HVAC unit to vary one or more comfort factors such that a predetermined comfort score is achieved. An associated method and an associated system are also provided.

Disclosed example respirators comprise: a filter configured to filter the air; a blower fan configured to provide continuous air flow at variable speeds; an air duct configured to direct air from the blower fan to an exhaust location, the blower fan configured to blow air through the air duct; and a blower controller configured to: control the blower fan to automatically adjust an airflow speed of the blower fan to a plurality of airflow speeds over a plurality of different time periods, the plurality of airflow speeds being within an airflow speed range.