Airflow Formulas Calculator that makes VRP easy: compute Vbz, Voz, ACH and supply flow with ASHRAE 62.1 presets. Student-friendly, plus a Pro upgrade link.
Airflow Formulas Calculator: VRP, ACH & Simple Guide Read More »
HVAC Load Calculator — estimate sensible, latent & total cooling free. Upgrade to PRO for multi-room, reports, costing, and ASHRAE-based presets.
HVAC Load Calculator: Free Sizing Tool + Pro Upgrade Read More »
Pump Head & Pressure Calculator PRO: compute TDH, friction loss, cost & standards (NFPA, ASHRAE, IS, CPWD) with full international presets.
Pump Head & Pressure Calculator PRO – International Read More »
Steel Pipes Expansion Loops Calculator to size U/L loops from ΔT and OD, estimate offset, added length, weight and cost—plus SI/Imperial toggle and report.
Steel Pipes Expansion Loops Calculator – Size & Cost Read More »
Room-by-Room Minimum Exhaust Picker helps size kitchen & bathroom exhaust as per ASHRAE 62.2, with step-by-step examples and compliance tips.
Room-by-Room Minimum Exhaust Picker Guide & Example Read More »
Airflow Formulas Calculator for HVAC design—compute airflow, velocity, ACH, and outdoor air compliance per ASHRAE & ISO standards with step-by-step guide.
Airflow Formulas Calculator: HVAC Rates, ACH & Compliance Read More »
Gage Tables Estimator helps HVAC pros auto-select duct gauge, thickness, reinforcement, and hanger spacing per SMACNA standards with cost & weight.
Gage Tables Estimator: Duct Thickness, Gauge & Weight Read More »
Insulation Thickness Calculator helps size pipe & duct insulation to prevent condensation, control heat loss, and estimate cost for IN/US/UK.
*Insulation Thickness Calculator – Pipe & Duct Sizing Guide Read More »
Chiller Capacity Calculator for accurate HVAC sizing, cost estimation, and energy use with presets, standards, and a full worked example.
Chiller Capacity Calculator – HVAC Sizing & Cost Guide Read More »
Pump Head Calculator to quickly determine pump total dynamic head, discharge pressure & costs with multi-segment losses and NFPA-20 checks.
Pump Head Calculator – Accurate Pump Pressure Estimation Read More »