Buderus GC144/25 Residential Gas Boiler W/ Electronic Ignition 85% AFUE 103K BTU Input
Superior Design The GC144 Series boiler requires very little spacebut dont let it's size fool you. The slim profile and convenient side piping are designed for quick and easy installationespecially as a replacement boiler.
Quality Build Buderus patented GL-180M silicone-injected cast iron has an excellent corrosion resistance, 40% greater flexibility and high thermal conductivity to resist thermal shock under conditions of rapid temperature change. Special compounds tightly join cast iron sections and provide a gas-tight seal for safe and effective operation.
Efficiency Optimized These Buderus boilers are available for use with natural gas or can be easily converted to propane. Factory-tested stainless steel premixed burners allow for low emissions and superior thermal insulation virtually eliminates standby temperature losses.,
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Viessmann VR1-105 Vitorond 100 Comfort VR1 Oil Fuel Cast Iron Shell Boiler, 87% AFUE, 105000 BTU Input, 92000 BTU Output

• Extremely durable cast iron heat exchanger for maximum reliability and service life
• Integrated stainless steel combustion chamber insert for clean and efficient combustion
• Thick 3-1/2" insulation for extremely low standby losses and fuel savings
• Easy access, full-swing left-hinged or right-hinged combustion chamber door
• Low maintenance cost with service friendly burner and easy-to-clean flue gas passageways
• Spacious, wet-base water walls prevent deposits, reduce stress and increase boiler life
• Additional energy savings and reduced emissions with modulating boiler water temperatures when using Vitotronic control options,
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Buderus GC144/18 Residential Gas Boiler W/ Electronic Ignition 85% AFUE 75K BTU Input 54K BTU Output
Superior Design The GC144 Series boiler requires very little spacebut dont let it's size fool you. The slim profile and convenient side piping are designed for quick and easy installationespecially as a replacement boiler.
Quality Build Buderus patented GL-180M silicone-injected cast iron has an excellent corrosion resistance, 40% greater flexibility and high thermal conductivity to resist thermal shock under conditions of rapid temperature change. Special compounds tightly join cast iron sections and provide a gas-tight seal for safe and effective operation.
Efficiency Optimized These Buderus boilers are available for use with natural gas or can be easily converted to propane. Factory-tested stainless steel premixed burners allow for low emissions and superior thermal insulation virtually eliminates standby temperature losses.,
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Viessmann Vitorond 100 Comfort VR1 Oil Fuel Cast Iron Shell Boiler, 87% AFUE, 91000 BTU Input, 80000 BTU Output

• Extremely durable cast iron heat exchanger for maximum reliability and service life
• Integrated stainless steel combustion chamber insert for clean and efficient combustion
• Thick 3-1/2" insulation for extremely low standby losses and fuel savings
• Easy access, full-swing left-hinged or right-hinged combustion chamber door
• Low maintenance cost with service friendly burner and easy-to-clean flue gas passageways
• Spacious, wet-base water walls prevent deposits, reduce stress and increase boiler life
• Additional energy savings and reduced emissions with modulating boiler water temperatures when using Vitotronic control options,
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Buderus G234X/55 Natural Gas Fired Cast Iron Water Boiler 228K BTU Input 188K BTU Output 84% AFUE
The Buderus G234X is a larger gas fired boiler designed for medium to large sized homes. The included burner pre-mixes gas and oxygenated air to the optimal level, resulting in a clean burning flame that reduces emissions and waste buildup. The burner's tray is fully removable, resulting in an easy cleaning process and simplified routine maintenance. Fully field-convertible from natural gas to liquid propane operation, the G234x is perfect for a large variety of homes.,
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Weil Mclain SGO-5-S4 Cast Iron Residential High Efficiency Oil Fired Steam Boiler,83.9% AFUE,131K BTU Output 546 Square Feet

• Factory tested and assembled cast iron section assembly
• Insulated steel jacket
• Aluminized steel flue collector hood with flue cap on top outlet (convertible to rear outlet)
• Swing away burner mounting door
• Heater opening cover plate
• High limit control with circulator relay and LWCO function
• Electrical junction box with wiring harnesses
• Junction box cover plate with service switch
• (2) vent pipe brackets
• Steam pressure, temperature gauge
• 15 psi ASME relief valve-side outlet
• Drain valve
• Barometric damper
• Siphon
• Gauge glass, cocks and guard

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Buderus G234x/45 Natural Gas Fired Cast Iron Water Boiler 187 BUT Input 154K BTU Output 84% AFUE
The Buderus G234x is a larger gas fired boiler designed for medium to large sized homes. The included burner pre-mixes gas and oxygenated air to the optimal level, resulting in a clean burning flame that reduces emissions and waste buildup. The burner's tray is fully removable, resulting in an easy cleaning process and simplified routine maintenance. Fully field-convertible from natural gas to liquid propane operation, the G234x is perfect for a large variety of homes.,
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Weil Mclain SGO-4-S4 Cast Iron Residential High Efficiency Oil Fired Steam Boiler, 84% AFUE, 108K BTU Output 450 Square Feet

• Factory tested and assembled cast iron section assembly
• Insulated steel jacket
• Aluminized steel flue collector hood with flue cap on top outlet (convertible to rear outlet)
• Swing away burner mounting door
• Heater opening cover plate
• High limit control with circulator relay and LWCO function
• Electrical junction box with wiring harnesses
• Junction box cover plate with service switch
• (2) vent pipe brackets
• Steam pressure, temperature gauge
• 15 psi ASME relief valve-side outlet
• Drain valve
• Barometric damper
• Siphon
• Gauge glass, cocks and guard

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Buderus G234x/38 Natural Gas Fired Cast Iron Water Boiler 160K BTU Input, 130K BTU Output 84% AFUE
The Buderus G234x is a larger gas fired boiler designed for medium to large sized homes. The included burner pre-mixes gas and oxygenated air to the optimal level, resulting in a clean burning flame that reduces emissions and waste buildup. The burner's tray is fully removable, resulting in an easy cleaning process and simplified routine maintenance. Fully field-convertible from natural gas to liquid propane operation, the G234x is perfect for a large variety of homes.,
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Weil Mclain SGO-3-S4 Cast Iron Residential High Efficiency Oil Fired Steam Boiler, 83.8% AFUE, 85K BTU Output, 354 Square Feet Less Burner,
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weil-mclain sgo-3-s4

Williamsom-Thermoflo GWI-063 Cast Iron Natural Gas Fired Draft Induced Water Boiler, 83.3% AFUE, 58K BTU

• Factory tested
• Easy service - 1-piece access door, all controls in easy reach
• High efficiency - generous heating surface, automatic vent damper
• Induced draft blower assembly
• Cast iron sections with built-in air separator
• Insulated heavy gauge steel jacket
• Stainless steel burners
• Electrical junction box
• 24 VAC combination gas valve
• Combination relay receptacle and 40 VA transformer and plug-in circulator relay
• Taco 007 circulator pump
• High temperature limit control
• 30 psig ASME relief valve
• Combination pressure temperature gauge
• Limited lifetime warranty on heat exchanger, 1 year limited warranty on parts
• Electronic ignition/flame supervisory control

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Viessmann VIitocrossal 300 CU3A353 Powder-Coated Viessmann Silver Stainless Steel Combustion Chamber Condensing Natural/LP Gas Fired Water Boiler, 95% AFUE, 40 - 199 MBTU Input, 40 - 185 MBTU Output

• Equipped with the industrys first intelligent combustion management system and powerful control technology
• Lasting performance with industry-leading Viessmann made SA240 316 Ti stainless steel Inox-Crossal heat exchanger
• Low emission combustion with fully-modulating Viessmann stainless steel matrix cylinder burner
• Fast installation and reduced maintenance with Lambda Pro, industry-first intelligent combustion management system: adjusts automatically to gas type and quality, no fuel conversion kit required
• Powerful and user-friendly: Viessmann Vitotronic on-board multi-function outdoor reset boiler and system control for multi-temperature space and DHW heating
• Greater venting flexibility with increased vent length up to 198 feet and multiple venting
• Compact, esthetic product design and zero clearance to combustibles
• Extremely quiet operation, quieter than most refrigerators
• True high-altitude operation up to 10000 feet with simple electronic adjustment
• 4" WC natural gas, 10" WC liquid propane gas
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