Compressor Selection Calculator
Manufacturers publish compressor performance as AHRI 10-coefficient polynomial maps: given evaporating and condensing temperatures, the map returns capacity and power. The tool applies the standard polynomial fit at your exact operating point — no interpolation tables.
Import your own CSV of manufacturer data (AHRI map import) or use the built-in map format, then compare candidates on capacity, power and COP. Because the tool applies the real coefficients, you get the manufacturer's own curve at your design point instead of a table lookup.
Manufacturers publish compressor performance as AHRI 10-coefficient polynomial maps: given evaporating and condensing temperatures, the map returns capacity and power. The tool applies the standard polynomial fit at your exact operating point — no interpolation tables.
Unlock the compressor selection tool — free account →Frequently asked questions
What is the AHRI 10-coefficient method?
A standardized polynomial regression (10 coefficients) that fits capacity and power against evaporating and condensing temperatures. Most compressor datasheets include the coefficients.
How do I account for subcooling and superheat in selection?
The standard map assumes fixed SH/SC conditions; manufacturers publish correction factors for deviations. The tool lets you input the map's reference conditions so corrections are explicit.
What safety factors should I apply?
Typical practice: select at 10% margin on capacity for unknown heat loads, and verify the compressor's operating envelope (max discharge temperature, min/max pressure ratio) at worst-case ambient.
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