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Calcimator

Economizer Savings Calculator

Estimate energy and cost savings from an HVAC economizer by comparing mechanical cooling hours to free-cooling hours.

Inputs

tons
hours
$/kWh
hours
kW

Results

Annual Savings with Economizer

$1,440

Simple Payback Period

2.8 years

Annual Cooling Cost (No Economizer)$3,600
Annual kWh Saved12,000 kWh
How to Use This Calculator
  1. Enter System Cooling Capacity, Annual Cooling Hours, and Electric Rate.
  2. Set Economizer Hours and Compressor Power Draw.
  3. Review Annual Savings with Economizer ($) and Simple Payback Period (years).
  4. Use Annual Cooling Cost (No Economizer) ($) and Annual kWh Saved to inform your decision.
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