HVAC CALCULATION TOOLS
Use enTaB’s convenient HVAC calculation tools for common field and system-performance calculations. These resources provide a quick way to estimate values used in testing, adjusting, balancing, and evaluating HVAC systems.
Select a calculator below, enter the requested values, and calculate your results.

Approximate BHP
Belt Length
Air Changes
BTUH Cooling
WHY enTaB?
EXPERIENCE. ACCURACY. INDEPENDENCE.
Whether you’re planning a new project, troubleshooting an existing facility, or need independent verification of building-system performance, enTaB can help.
Tell us about your facility and project requirements, and we’ll help determine the appropriate services for your needs.
