Exhaust fans typically have a gravity damper within the wall vent or a butterfly damper within the exhaust duct. The purpose of these backdraft dampers is to prevent outdoor air from making its way back into the house. The dampers only allow air to flow from the bathroom to the outside in one direction. During […]
3 wire damper for bathroom exhaust fan Read More »
This article explains the differences between exhaust only, supply only, and balanced building ventilation. Additionally, this article has example calculations showing the differences between the ASHRAE 62.2-2010 and 2013 standard revision when sizing residential ventilation systems. Wiring diagrams show how to connect a ventilation controller to air handling units and bathroom exhaust fans. Ventilation sequence
How to size and install residential ventilation Read More »
This article describes how HVAC duct sealing creates a more comfortable living environment while improving heating and cooling system efficiencies. Energy efficiencies increase by applying duct mastic to seal all forced air ductwork connections, seams, and joints. This includes all supply and return air ductwork internal or external to the building envelope. Fresh air supply
Duct sealing improves HVAC system efficiency Read More »
A Nest thermostat can be set up with a whole house dehumidifier to control relative humidity levels within the home. This article includes drawings and electrical wiring diagrams explaining how to set up and wire a Nest thermostat, whole house dehumidifier and air handler. The benefits of controlling your home’s relative humidity relating to comfort
How to set up a Nest Thermostat with a whole house dehumidifier Read More »
A Nest thermostat can also function as a humidistat to control your home’s relative humidity. This article includes drawings and electrical wiring diagrams explaining how to set up and wire a Nest thermostat, humidifier and furnace. The benefits of controlling your home’s relative humidity relating to comfort and energy savings will also be reviewed. Buildings
How to set up a Nest Thermostat with a humidifier Read More »
