Free calculator

Cooling Load (Tonnage) Estimator

Quick rule-of-thumb cooling load estimate to size an HVAC system.

Results

Enter your dimensions and hit Calculate.

This is a rule-of-thumb estimate only. An HVAC engineer should perform a full Manual J load calculation before equipment is specified or purchased.

Assumptions

  • Equipment size is rounded up to the nearest 0.5 ton.
  • 1 ton = 12,000 BTU/hr.
  • Sq ft per ton is a rough regional guideline — real loads require a Manual J calculation.

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Land Planning Master Checklist

The complete checklist for planning your property — from raw land to build-ready site. Clearing, access, drainage, septic, utilities, permits, foundation, and everything in between.

  • ✓Every stage in the right sequence
  • ✓What to verify before each phase starts
  • ✓Questions to ask your contractor
  • ✓Common mistakes and how to avoid them

Free account — includes the checklist + 3 saved calculations.

Create your free account to get the checklist.

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