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Engines / Compressors

Engines Emissions Calculator

Stationary reciprocating engines driving compressors, pumps, or generators.

Input assumptions

Activity data
hp
%

Use 100% for potential-to-emit unless an enforceable limit applies.

hr/yr

8,760 hr/yr for potential to emit unless an enforceable limit applies.

%

Only claim control you can document and enforce.

Emission factor

Use a manufacturer guarantee, a permit limit, a source test result, or an EPA/agency factor. Record the document, revision, and table you took it from.

g/hp-hr

Calculation result

Enter rated power, load, emission factor to see results, or fill demo values to explore.

Calculation methodology

Power-based method. Multiplies a brake-specific emission factor by rated horsepower and load fraction, then converts grams to pounds.

E (lb/hr) = EF (g/hp-hr) × P (hp) × L ÷ 453.592 (g/lb)
Emission factor
Emission factor: — g/hp-hr
Source / reference
Not provided. Results without a cited factor are not defensible.

Calculation set

Add several sources or pollutants and total them. Stored in this browser tab only until accounts launch.

No calculations added yet.

Native Excel and PDF exports with full methodology arrive with saved accounts. Phase 2

AirPermitHub provides educational, engineering, research, and compliance-support information. Information provided by the platform does not constitute legal advice and should not replace review of applicable regulations, permits, agency guidance, or consultation with qualified professionals. Full disclaimer