Patent application number | Description | Published |
20120318137 | METHOD AND SYSTEMS FOR SETTING AN AIR FILTER CHANGE THRESHOLD VALUE IN AN HVAC SYSTEM - A clean air filter may be used to set an air filter change threshold value for an air filter monitor installed in an HVAC system. The air filter change threshold value may be used to determine a status of an air filter (e.g., clean or dirty). | 12-20-2012 |
20120318138 | METHODS AND SYSTEMS FOR SETTING AN AIR FILTER CHANGE THRESHOLD IN AN HVAC SYSTEM USING A BLOCKING PANEL - A blocking panel may be used to set an air filter change threshold value for an air filter monitor installed in an HVAC system. The air filter change threshold value may then be used to determine a status of an air filter (e.g., clean or dirty). | 12-20-2012 |
20120323374 | HVAC CONTROLLER WITH COMPONENT CHANGE NOTIFICATION - HVAC methods and systems are provided for issuing a component change notification to a user when an air filter or other replaceable component should be changed. In some instances, an HVAC controller may solicit information from a user that is related to one or more features of the replaceable component (e.g. air filter) of the HVAC system. This can include, size, type, model number and/or any other suitable feature, parameter and/or property. In some cases, the time before a component change notification message is issued by the HVAC controller may be dependent on, determined by, and/or adjusted based on the received information. In some instances, the HVAC controller may display at least some of the received information in a subsequently issued component change notification message. | 12-20-2012 |
20120323375 | METHOD AND APPARATUS FOR CONFIGURING A FILTER CHANGE NOTIFICATION OF AN HVAC CONTROLLER - Methods and systems are provided for monitoring the condition of an air filter of an HVAC system to provide an indication of when the air filter should be changed. An HVAC controller may be configured to include a filter change notification, wherein the HVAC controller may monitor the current condition of the air filter, and may display a filter change notification on the display when the current condition of the air filter passes a filter change threshold value. In some cases, the HVAC controller may be configured to perform, sometimes at the request of a user, one or more calibration tests on the air filter to help the user identify an appropriate filter change threshold value. Alternatively, or in addition, the HVAC controller may, through a user interface, allow a user to enter and/or change a filter change threshold value, as desired. | 12-20-2012 |
20130025729 | DUCT PORT FOR PRESSURE SENSING - The present disclosure related generally to ports for sensing one or more parameters in an HVAC system, and methods for installing such ports. In one illustrative embodiment, a port provides a fluid passageway through a wall of an HVAC component such as an air duct. The port may be formed of a hollow stem member having a first end and a second end and a head member positioned therebetween. The port may include an anchor member for anchoring the port to a wall of the HVAC component. In some cases, the anchor member may secure the port within the wall such that the head member forms a substantially fluid tight seal with the wall. | 01-31-2013 |
20130226352 | HVAC CONTROLLER WITH INDOOR AIR QUALITY SCHEDULING - An HVAC controller, such as a thermostat, may be configured to allow a user to set and/or select schedule time period in which one or more indoor quality units (e.g. humidification, dehumidification, ventilation, etc.) will or will not operate, and/or will operated but using different settings. In some cases, the schedule time periods available for selection may correspond to the time periods of a programmable temperature schedule of the HVAC controller, but this is not required. In some instances, the HVAC controller may allow a user to select which indoor air quality units will or will not operate, and/or what settings the indoor air quality units will operate, during a user's vacation. | 08-29-2013 |
20150027681 | HVAC CONTROLLER HAVING ECONOMY AND COMFORT OPERATING MODES - An HVAC controller may be programmed to control an HVAC system according to a comfort mode and an economy mode. When the HVAC system is operating according to the comfort mode, the HVAC system may primarily draw energy from a locally generated energy source or local energy storage system. The HVAC controller may be programmed to transition the HVAC system from operating according to the comfort mode to operating according to an economy mode, wherein the economy mode is a more energy efficient that the comfort mode | 01-29-2015 |
20150032264 | AIR QUALITY BASED VENTILATION CONTROL FOR HVAC SYSTEMS - An HVAC controller and/or server may be programmed to determine if ventilation of a building is desired based, at least in part, on the one or more user-specified air quality thresholds stored in a memory, and one or more of a measure of indoor air quality and a measure of outdoor air quality. The air quality parameter threshold may relate to an air quality index, an air pollutant concentration, a smog alert, a pollen count, a dew point, a chance of precipitation, and/or the like. In addition, the HVAC controller and/or server may take into account current or future weather conditions when determining the ventilation needs of a building. Upon determining that ventilation is needed or recommended, the HVAC controller may send or display a message to the user. The message may recommendation that the user open a window or operate a ventilation system, as desired. | 01-29-2015 |