Contact Us

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3398 Washington Road
Atlanta, GA 30344
USA

773.398.5288

Advanced residential construction and home improvement consulting and owner's advocacy in Atlanta, using the latest building performance diagnostic and modeling techniques and tools. Airtightness, insulation, HVAC, ventilation, moisture, and air quality and EMF consulting for homeowners and building professionals alike.

Calculators

Math is necessary to get performance right. Here’s a collection of FREE online calculators I use regularly:

Local Weather Data Worldwide with ASHRAE-Meteo.info:
https://ashrae-meteo.info/v2.0/

Psychrometric Calculator
https://daytonashrae.org/psychrometrics/psychrometrics_imp.html

Psychrometric Charts
https://drajmarsh.bitbucket.io/psychro-chart2d.html

RED Calc
https://www.redcalc.com/red-calc-free/

Make Up Air Calculator
https://bnt-makeupairspecifier-tools-prod-2023.azurewebsites.net/MUATemplate.aspx

Duct Calculator
https://www.oceanhvac.com/ductulator/

Airflow Velocity CFM Calculator
https://www.engineering.com/calculators/air-flow-conversion-calculator/

Airflow Mixing Calculator
https://mhs.munters.com/MHS/AirMixing.aspx

Download our free print-ready psychrometric wheel calculator