Ambient Derating Sizing Calculator

Enter your design-day ambient temperature and required heating load — this tool applies Koven’s published KAFLG heating correction factors so you size against real derated capacity, not the nameplate rating.

Required Heating Load (kW, at rated conditions)

Design-Day Ambient Temperature

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Actual delivered heating capacity at this ambient temperature

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Based on Koven KAFLG screw series “Heating Variable Working Condition Correction Coefficient Table” (measured data, 39–50°C hot water outlet range). For KAFMH(A) and KAFM series, or ambient points outside this table, request a project-specific derating calculation.

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