Free Tool · 05

HVAC Estimator

Enter your building details to get equipment sizing in tons, ductwork quantities, diffuser counts, and a rough HVAC cost estimate.

Zones / Areas

Zone Name

Area (SF)

Use Type

System Options

System Type

Climate Zone

Ceiling Height (ft)

Sizing Rule of Thumb

1 ton = 12,000 BTU/hr

Residential: ~400–600 SF/ton

Office: ~300–400 SF/ton

Retail: ~250–350 SF/ton

Warehouse: ~600–800 SF/ton

Important Note

This tool uses rule-of-thumb sizing. A proper Manual J load calculation is required for final equipment selection. Actual costs vary significantly by region and system complexity.

Need a Full HVAC Takeoff?

Our estimators deliver drawing-referenced HVAC takeoffs with equipment schedules, ductwork quantities, and diffuser counts.