Jun 1, 2022 | Dr. Energy |
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,...
May 12, 2022 | Dr. Energy |
An HVAC contractor recently asked the following questions about Energy Recovery Ventilators and Make-Up Air: “We are currently doing a new construction home and the General Contractor just told us they are having a 900 CFM (cubic feet per minute) kitchen range exhaust...
Feb 10, 2022 | Dr. Energy |
Where gas appliances are located inside the thermal envelope, a sufficient amount of combustion air must be provided for the safe and complete combustion of natural gas fuels. As new buildings become tighter, it is imperative for design professionals to know that...
Feb 10, 2022 | Dr. Energy |
As we approach two years of dealing with travel restrictions, shutdowns, zoom meetings, health concerns, masks, sickness, deaths, etc., it is an appropriate time to look closely at the buildings we live in and how building design, building codes, and specifically HVAC...
Oct 26, 2021 | Dr. Energy |
As we continue to see ‘foil bubble insulation’ used incorrectly as duct insulation, it is time to separate the facts from the fiction. This is a critical issue as the improper installation of these products often increases the heat loss or gain by a factor of four,...
Jun 24, 2021 | Dr. Energy |
Part 5: Infiltration and Ventilation Air – Impact on Load Calculation This discussion is the fifth in a series on the design a residential HVAC system in accordance with ACCA Manuals J, D, and S, as requirement by the ICC mechanical and energy codes. The focus...
