Weil-mclain 672619210233 Aquabalance Series 2 Hot Water Gas Boiler 120 Mbh Heat Only Stainless Steel Single Tube Heat Exchanger 95% Afue

Product Description

The Weil-McLain 672619210233 AquaBalance Series 2 is a wall-mount residential hot water gas boiler built for high-efficiency space heating. It delivers 120,000 BTU per hour of heating input with a rated output of 112,000 BTU per hour, achieving an Annual Fuel Utilization Efficiency of 95.0%. That rating means the boiler converts 95 cents of every dollar of natural gas into usable heat, keeping fuel costs low over the life of the unit. The 10-to-1 turndown ratio allows the burner to modulate output from full capacity down to just 10 percent of its rated input. This wide range of modulation lets the boiler match actual heat demand in real time, reducing short cycling and improving comfort in residential hydronic heating systems.

The heat exchanger is made from 316L stainless steel using a single-tube, large-diameter design. This construction resists corrosion from hot water contact and supports long service life. The 316L alloy is a standard choice in high-efficiency condensing boilers because it handles the low flue gas temperatures and mild condensate acidity that occur during condensing operation. Spark ignition handles lighting automatically without a standing pilot, which eliminates the continuous gas draw of older pilot-based systems.

Installation uses 3/4-inch supply and return pipe connections. The unit runs on 120V single-phase power. Venting is compatible with PVC, CPVC, stainless steel, or select polypropylene materials, giving installers flexibility based on job conditions. The compact wall-mount footprint opens up placement options where floor space is limited. Removable side panels make routine service, cleaning, and inspection straightforward. The boiler ships with a water treatment inhibitor and test kit to protect the heat exchanger from day one. Controls are simple and user-friendly for both initial setup and ongoing adjustments. The unit is Energy Star compliant and certified for sale in California under CEC standards. CSA certified for safety compliance.

• 95% AFUE natural gas condensing boiler with 120,000 BTU input and 112,000 BTU heat output
• 10-to-1 turndown ratio with spark ignition for precise modulation and efficient operation
• 316L stainless steel single-tube heat exchanger compatible with PVC, CPVC, stainless steel, or polypropylene venting

Product Highlights

The Weil-McLain AquaBalance Series 2 delivers 95% AFUE efficiency with a wide modulating range and a corrosion-resistant stainless steel heat exchanger in a compact wall-mount design suited for residential hydronic heating installations.

Product Information

Standard Information

• Brand: WEIL-MCLAIN
• Manufacturer Part Number: 672619210233

Technical Specifications

• Collection: AquaBalance Series 2
• Application: Residential
• Fuel Type: Natural Gas
• Media: Hot Water
• Installation Type: Wall Mount
• BTU Input: 120,000 BTU per hour
• BTU Heat Rating: 112,000 BTU per hour
• Input (MBH): 120 MBH
• AFUE: 95%
• Turndown Ratio: 10 to 1
• Ignition System: Spark Ignition
• Material: Stainless Steel
• Volts: 120V
• Phase: Single Phase
• Supply Pipe Connection Size: 3/4 inches
• Return Pipe Connection: 3/4 inches
• Height: 27.56 inches
• Width: 16.54 inches
• Depth: 12.6 inches
• Energy Star Compliant: Yes
• CEC Compliant: For Sale in CA
• CSA Certified: Yes