San Diego County HVAC Sizing Tool
Find the Right HVAC Size for Your Home
Get an instant preliminary cooling-load and equipment-size estimate based on your home’s size, climate zone, ceiling height, insulation, windows, occupancy, duct condition, sun exposure and roof conditions.
Instant HVAC Sizing Report
$9.99
See estimated BTU/h, recommended nominal tonnage, load per square foot and practical equipment guidance. Your $9.99 can be credited toward an Omega Air HVAC assessment or installation.
HVAC Load & Tonnage Estimate
Enter the property details below. This is a field-sizing estimate, not an ACCA Manual J calculation.
Used on your report. Property lookup can be connected later.
✓ Your preliminary calculation is ready
Estimated cooling load—
Recommended capacityUnlock report
Your full report includes recommended tonnage, nominal BTU capacity, load per square foot, input summary and next-step equipment guidance.
$9.99 may be credited toward an Omega Air HVAC assessment or installation.
OMEGA AIR
HVAC Sizing Report
PAID REPORT
Estimated Cooling Load—BTU per hour
Recommended Nominal Capacity——
This report is a preliminary HVAC sizing estimate intended for planning purposes only. It is not an ACCA Manual J calculation, engineering report, permit document, or final equipment selection. Final system sizing and equipment selection should be verified during an onsite HVAC assessment and, when required, a room-by-room Manual J calculation.
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