Weil-McLain 633500201
Weil-McLain 633500201
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Weil-McLain Aqua Pro 55 - 55 Gallon - Residential Indirect Water Heater



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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
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Weil-McLain Aqua Pro 55 - 55 Gallon - Residential Indirect Water Heater
Weil-McLain Aqua Pro 55 - 55 Gallon - Residential Indirect Water Heater
Model: 633500201
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Expert Recommended Accessories Selected by Ken, our Expert
Required Accessories 9
These accessories are required to properly setup/install this product.
Optional Accessories 10


    Over the last 130 years, Weil-McLain has built a reputation of designing some of the most reliable boilers in the marketplace. If you want to leverage the power and efficiency of your boiler for domestic hot water, then the Aqua Pro 55 is a great choice. The Aqua Pro is a domestic hot water option that fits many applications and is designed for ease of installation in any system. Ideal for all types of water conditions, but in particular harsh enviroments, the Aqua Pro 55 is designed to install easily into any system.
  • Composite Tank Construction
  • The composite tank of the Aqua Pro 55 is lightweight and easily maneuvered. The non-metallic material stands up to corrosion, making it ideal for environments with even the harshest water conditions.
  • No Annual Maintenance
  • With the seamless, no-weld design of the Aqua Pro 55, there is no need for an anode rod, eliminating annual maintenance requirements.
  • Efficiency Boosting Insulation
  • Discouraging heat loss is one of the best ways to improve efficiency. The Aqua Pro 55 has two inches of dense foam insulation that brings heat loss as low as 0.6 degrees per hour.
  • Digital Control
  • The Aqua Pro 55 features a digital thermostat that ensures precise accuracy for optimal performance
California residents see
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm..
For more information go to: www.p65Warnings.ca.gov


specs product image PID-95213
Product Category
Water Heater - Indirect-Fired
General Information
Indirect Water Heater
Product Line
Aqua Pro
Product Category
Water Heater - Indirect-Fired
Medium Learn More
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
Hot Water
Fuel Type Learn More
Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Indirect Fired
Storage Type
Coils Quantity
Connection Type
55 Gallons
First Hour Delivery Learn More
First Hour Delivery
Sometimes called First Hour Rating, this is the number of gallons of hot water the heater can supply per hour when starting with a fully heated tank. The recovery of the water heater depends on your boiler's BTU and boiler output temperature.
217 Gallons
Continuous Recovery Rate
177 Gallons
Cold Water Inlet
3/4 Inch
Hot Water Outlet
3/4 Inch
Supply Connection
3/4 Inch
Return Connection
3/4 Inch
Product Height
41 Inches
Product Width
28 Inches
Product Weight
95 Pounds
Shipping Height
46 Inches
Shipping Width
30 Inches
Shipping Length
30 Inches
Shipping Weight
105 Pounds
Warranty Information
Parts Warranty Learn More
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Vessel Warranty
10 Years


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How-To Articles

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Weil-McLain Aqua Pro 55 - 55 Gallon - Residential Indirect Water Heater
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