Introduction: A local jurisdiction contacted me asking if I could assist them with their goals to increase energy code compliance within their building department and to improve the energy efficiency in buildings built in their city. Of course, I accepted, as their...

In part 1 [LB1] of this blog series, we covered how the design of Heating, ventilation, and air conditioning (HVAC) systems can affect poor airflow. This discussion will focus on the devices located in the air stream of a residential HVAC duct system. These devices...

Application of the building science principles of heat transfer indicates that Heating, ventilation, and air conditioning (HVAC) systems located in unconditioned attics are inefficient, typically increasing energy usage by 25 to 50%. Conventional wisdom is that...

During the 2022 Utah Legislative Session, House Bill 39 was passed and subsequently signed by Gov. Spencer J. Cox. The bill included amendments to home battery storage systems, plumbing fixture flow rates, household appliance refrigeration standards, and fire...

I have a room in my house which is cold in the winter and hot in the summer, I need a bigger system!” “My house isn’t cooling well so I hired a guy to put in a 5-ton air conditioner.” No, you don’t need a bigger system. You have an airflow problem. Low or incorrect...

The outdoor section for a central air conditioning (AC) unit and heat pump relies heavily on proper air circulation to function properly. The AC condenser fan pulls in ambient air, typically through one or more of the sides of the unit, through the condenser coil,...