Air Changes per Hour
Calculate room air changes per hour (ACH) from supply airflow and space volume.
Type: calculator
Predefined pages: 36
HVAC Conversion Tools
Airflow, duct sizing, and cooling efficiency calculators for HVAC planning.
Table of Contents
Available Conversions
BTU to Tons
Convert cooling capacity from BTU/h to refrigeration tons for HVAC sizing comparisons.
Type: formula
Predefined pages: 20
CFM to Tons
Convert airflow to approximate tons of cooling using a common 400 CFM per ton rule of thumb.
Type: formula
Predefined pages: 20
Duct CFM to Diameter
Estimate round duct diameter from airflow (CFM) and target air velocity (FPM).
Type: calculator
Predefined pages: 36
SEER to EER
Convert seasonal efficiency (SEER) to approximate steady-state EER for quick HVAC comparisons.
Type: formula
Predefined pages: 23
Sensible Heat from CFM
Estimate sensible heating or cooling capacity from airflow and dry-bulb temperature change.
Type: calculator
Predefined pages: 40
Review Standards for HVAC
Pages in this industry use shared templates for editorial metadata, structured data, and page sections. Calculator definitions are validated for structure, FAQs, and table consistency before deployment.
Use our editorial policy, review process, and corrections policy pages for sitewide standards and maintenance details.
HVAC Reviewer Pool
Convertools assigns a five-reviewer pool per industry and rotates the displayed reviewer by page URL. See the full roster on the Reviewers page.