Cooling Tower Makeup Water Calculator
Calculate cooling tower makeup water with clear inputs, formula guidance, and practical result checks.
Cooling Tower Makeup Water measurements
Enter your values, then calculate.
Result
How to calculate cooling tower makeup water
This calculator finds total cooling tower makeup water requirement by adding evaporation loss and other water losses (drift, blowdown) together.
How the calculation works
Makeup water = Evaporation loss + Other losses. Makeup water replaces all water lost from the system to keep it operating.
Example
120 gallons/hour evaporation loss plus 15 gallons/hour of other losses: Makeup water = 120 + 15 = 135 gallons/hour.
Frequently asked questions
How is Result calculated?
Result = [Evaporation loss] + [Other water losses].
Is the Cooling Tower Makeup Water Calculator free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Cooling Tower Makeup Water Calculator
Makeup water = Evaporation loss + Other losses. Makeup water replaces all water lost from the system to keep it operating.
Let's understand your cooling tower makeup water result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Cooling Tower Makeup Water
- Evaporation loss typically accounts for the majority of makeup water needs and scales with cooling load and ambient conditions.
- Blowdown (deliberate water discharge to control dissolved solids) is a controllable loss — optimizing blowdown rate can reduce total makeup water needs.
Common Cooling Tower Makeup Water Mistakes to Avoid
- Overlooking drift loss (water droplets carried out with the airstream) as a separate, though typically smaller, contributor to total water loss.
When to Use This Calculator
This calculator finds total cooling tower makeup water requirement by adding evaporation loss and other water losses (drift, blowdown) together.