The permit needs a stamped load calculation, and the equipment you install should match it. We prepare stamped cooling and heating load calculations and energy code calculations for commercial, industrial and multi-family jobs, worked room by room so the numbers hold up in plan review.

What you get

Room-by-room cooling and heating loads by ASHRAE methods, to size equipment from
Ventilation rates to the mechanical code the jurisdiction has adopted
Air Balance Report
Energy code compliance documentation, where the job needs it
A stamped, plan-review-ready document

Why contractors use us

A fee before you commit. Enter the project type and square footage in the online quote tool and, for most projects, a preliminary fee appears on screen, so you can price the job before you commit. The fee is confirmed in writing once we review the scope.

Fast replies, predictable turnaround. Inquiries are answered within 1 to 2 business days, and most load calculations are returned within 5 to 10 business days of scope confirmation. Rush turnarounds are available when the schedule requires one.

Built for plan review. More than 3,000 stamped projects since 2014, with a first-pass plan approval rate above 99% (a rolling five-year average, excluding revisions from client-supplied data or scope changes). Where an assumption is unavoidable, it is stated on the output, so the reviewer can see what each number rests on.

Worked from the drawings. Loads come from the drawings, not from square-foot allowances.

What to send

The drawings, the project type, the square footage and the turnaround you need. If something is missing, we send a list of what is still needed; see an example of a clear response.

Jobs we work on

Restaurants, medical, dental and veterinary clinics, retail and office space, industrial buildings, substation and utility buildings and multi-family buildings, in the eleven states we are licensed in. The codes each state has adopted are on our state pages.