Buderus 7738503408
Buderus 7738503408
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Buderus GC144/4 - 87K BTU - 85.0% AFUE - Hot Water Gas Boiler - Chimney Vent



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Estimated Availability December 01, 2021
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$367 / Month
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Buderus GC144/4 - 87K BTU - 85.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Buderus GC144/4 - 87K BTU - 85.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 7738503408
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Recommended Accessories

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Expert Recommended Accessories Selected by Bob, our Expert
Required Accessories 9
These accessories are required to properly setup/install this product.
Optional Accessories 10


    The GC144/4 gas fired boiler is purpose built for boiler replacement applications. It was built from the ground up to ensure compatability with older homes while still providing the higher efficiencies and safety features we have come to expect from boilers today. An AFUE of 85% places the GC144 head and shoulders above most older conventional boilers, and you will be able to immediately tell the difference after installation when your fuel bill comes in the mail. The included AquaSmart control and pressure relief valve bring your boiler up to modern safety standards, providing increased safety for your entire family.
  • Included AquaSmart Control
  • The AquaSmart control included with the GC144 series of boilers acts as the brain for your home's heating system, allowing it to react to both outdoor temperatures and increased heat demand within your home.
  • Patented Flexible Cast Iron
  • Buderus manufactures the GC144 with their patented GL-180M cast iron, an alloy developed specifically for home heating applications. The alloy is more corrosion resistant and flexible than other alloys, allowing it to respond to rapid temperature changes.
  • Ideal Replacement Boiler
  • The GC144 was engineered to be compatible with older hydronic heating systems with as few modifications as possible. This translates into an easier to install boiler requiring less contractor work, which leads to reduced installation costs.


specs product image PID-37570
General Information
Product Line
Medium Learn More
Hot Water
Heat Exchanger Material
Cast Iron
Fuel Type Learn More
Natural Gas
Combustion Type Learn More
Vent Type Learn More
Chimney Vent
DHW Production Learn More
Modulating/Staging Learn More
Single Stage
Mount Type
Minimum Altitude
0 Feet
Maximum Altitude
8500 Feet
Includes Pump
Assembly Type
Additional Model Numbers

7738003478, 7738503408

AFUE Learn More
85 %
Maximum Input Capacity Learn More
103000 BTU
DOE Heating Capacity Learn More
87000 BTU
Net I=B=R Capacity Learn More
76000 BTU
Ultra Low NOx Emissions Learn More
Electrical Data
120 Volts
60 Hz
Flue Connection Size
5 Inches
Gas Connection Size
1/2 Inch
Supply Connection
1 1/4 Inches
Return Connection
1 1/4 Inches
Product Height
34 3/8 Inches
Product Width
21 1/2 Inches
Product Depth
16 7/8 Inches
Product Weight
287 Pounds
CSA Listed
ASME Certified
AHRI Certified
Warranty Information
Parts Warranty Learn More
5 Years
Heat Exchanger Warranty
Lifetime Years


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Buderus GC144/4 - 87K BTU - 85.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Buderus 7738503408
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