IMPORTANT: The AMTROL Selection Tool should be used as a general guide to sizing AMTROL products. Sizing calculations are dependent on user input and should be considered as recommendations.  All sizing selections should be verified by a licensed plumbing contractor, qualified project manager or facility engineer before purchase and or installation.\

For Submittal Data information for each product go to

Well Tank Sizing
Residential Commercial
Pump Flow Rate GPM (Range 1-30)
Desired Pump Runtime Minutes (Range 1-4)
Cut-In Pressure PSI (Range 20-120)
Cut-Out Pressure PSI (Range 21-125; Must be greater than Cut-In)

Recommended Models:

Thermal Expansion Tank Sizing
Residential Commercial
Water Heater Size Gallons
Approx. Temp Setting °F
Approx City Pressure
Domestic Hot Water Volume Gallons (Range: 10 - 10,000)
Water Heater Temperature °F
Relief Pressure PSI
Supply Pressure PSI

Recommended Models:

Hydronic Expansion Tank Sizing
Residential Commercial
Boiler Net Output:


Type of Radiation:

Total System Volume Gallons (Range: 10 - 20,000)
Min Operating Temp °F
Max Operating Temp °F
Antifreeze (Glycol) % Concentration
Min Operating Pressure PSI (Range: 5 - 200)
Max Operating Pressure PSI (Range: 10 - 300)

Recommended Model:


Sales Reps, Wholesalers, Installers