❄️ AHRI 550/590 Centrifugal Chillers (Approach Temp <1.5°F, Head Lift PSI)

Centrifugal Chiller Approach Temperature Calculator

Model heat transfer degradation and compressor head lift across water-cooled centrifugal chillers: calculate Evaporator Approach Temperature (Leaving Chilled Water Temp minus Saturated Refrigerant Evaporating Temp) and Condenser Approach Temperature (Leaving Condenser Water Temp minus Saturated Condensing Temp), identify tube scaling, and maintenance profits.

1. Project & Operating Inputs

Centrifugal Chillers Monitored (Chiller Count e.g. 4x 750-Ton Chillers)

Measured Condenser Approach Temperature (°F e.g. 4.5°F Fouled Approach)

Customer Bid Price for Annual Comprehensive Chiller PM ($ / Chiller)

Rotary Tube Brush Machine, Oil Analysis, Refrigerant Top-Off & Techs ($)

2. Financial Breakdown & Yield

CHILLER APPROACH & HEAD LIFT

Annual Chiller PM Contract Profit

Commercial Chiller Service Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost