Is gross margin the same as markup?

No. Margin divides profit by selling price; markup divides profit by cost.

Where do fixed order costs belong?

Include them once in direct cost or allocated overhead according to your costing policy.

A positive-cost quote cannot achieve 100% gross margin at a finite price.

Yes. The arithmetic returns zero price; verify that a zero-cost scope is intentional.

HVAC Ductwork, Air Handling & Mechanical Products calculator

Price an air-handler order at your chosen gross margin. Enter total direct cost, allocated overhead, whole assemblies and margin on selling price.

Total Direct Job Cost: Total material and direct labor cost for the quoted scope.
Allocated Job Overhead: Overhead and fixed order costs excluded from direct cost.
Quoted Assemblies: Whole deliverable assemblies covered by the quote.
Target Gross Margin: Desired gross profit as a percentage of selling price.

Best suited to air handler quotes, gross margin comparisons.
Taxes, commercial terms and charges outside the entered cost scope are excluded.

Industrial electricity averages 9.77 cents per kWh across the U.S. (EIA, Jul 2026), up 4.7% from a year earlier. Energy-intensive steps carry this directly into unit cost.
U.S. housing starts run at 1,275k per year (Census, Aug 2026), down 1.2% from a year earlier, the demand driver for building products.

Is gross margin the same as markup? No. Margin divides profit by selling price; markup divides profit by cost.
Where do fixed order costs belong? Include them once in direct cost or allocated overhead according to your costing policy.
Why must margin stay below 100%? A positive-cost quote cannot achieve 100% gross margin at a finite price.
Can zero cost be entered? Yes. The arithmetic returns zero price; verify that a zero-cost scope is intentional.

Last reviewed 2026-10-12.