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Questions From an HVAC Contractor – Energy Recovery Ventilators and Make-up Air.
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...
Utah’s Residential Energy Code Field Study Shows a Big Opportunity for Cost Savings and Emissions Reductions
New homes built in Utah can lock in long term financial savings by preventing energy waste. The key to achieving this is in the International Energy Conservation Code, otherwise known as the “IECC” or simply the “energy code.” The energy code sets a baseline for...
Drawing combustion air out of air sealed buildings – Is it safe?
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...
HVAC Systems, Ventilation, Filtration and COVID-19
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...
Foil-Faced Bubble Wrap Duct “Insulation”
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,...
ACCA Residential HVAC Standards: Manual J – Load Calculations, Manual D – Duct Design, and Manual S – Equipment Selection: Part 5
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 is the...
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