US BoilerU.S. Boiler Company

Alpine

Condensing Gas Boiler

The Alpine is one of the most efficient, energy-saving boilers on the market today. Every Alpine boiler is equipped with a number of advanced technologies to constantly monitor boiler performance and match fuel consumption directly to heating demand. The Alpine incorporates outside temperature sensing technology that automatically adjusts the firing rate of the boiler based on the outside air temperature. It also continuously monitors system safety parameters to ensure years of comfortable, safe, reliable operation. Today’s Alpine is the peak of performance!

  • High efficiency boiler – 95% AFUE
  • Compact, space-saving modern design
  • 80 – 399 MBH (6 sizes) 80 – 210 sizes are floor mount or wall hung
  • Industry leading Sage2.2 Boiler Control System continuously monitors key system parameters
  • Touch Screen Display for easy user interface to view all system functions
  • Available for use with natural or LP gas
  • ENERGY STAR Certified – Efficiency tax credits/rebates may apply
  • 5-year part replacement warranty (for residential boilers under 300 MBH)

Alpine Commercial

Condensing Gas Boiler

Do you find yourself wishing that the Alpine line included larger sizes so you could heat shopping malls, high schools, and hospitals with it? Wish no more! The Alpine line now includes 399, 500, 600, 700, and 800 MBH models so you can efficiently heat just about any structure. The new models feature the ease of service and installation you’ve come to expect from the Alpine.

In a commercial setting, the big Alpine sizes have a lot to offer where other boilers might fall short. The Alpine’s small footprint allows even the largest models to pass through a standard doorway, and you can stack them two high in small mechanical rooms where lots of capacity may be needed. For simple lead-lag operation, use an RG-45 phone cord to link Alpine units together.

  • Up to 95% thermal efficiency
  • 399 – 800 MBH (5 sizes)
  • Equipped with Sage2.2 Control System, includes built-in sequencer for internal staging of up to eight Alpine boilers.
  • For use with natural or LP gas
  • Unique, patented polypropylene condensate trap with internal cutoff switch prevents damage to heat exchanger from condensate backup
  • Less than 20ppm NOx
  • Stackable

K2 Watertube

Condensing Gas Boiler

What sets the K2 apart in the highly competitive field of wall-hung condensing boilers? Simply put, it’s the boiler designed with YOU in mind. The NEW K2 condensing boiler by U.S. Boiler Company offers an UNMATCHED combination of high efficiency, high performance, and high value.

  • High efficiency boiler – Up to 95% AFUE
  • Reliable, proven stainless steel heat exchanger
  • Sage 2.2 Control System with factory pre-sets to speed installation
  • Touch screen diagnostic display
  • Exclusive features for installer convenience and homeowner dependability
  • FREE 5-year parts warranty included
  • Combi Kit Available
  • UNMATCHED High Altitude Performance

The K2 Boiler System is a series of enhancements that offer ease of installation, exclusive features, and outstanding overall value and performance! Most components that comprise the K2 boiler system are designed to be used with the Sage2.2 Control System, and can be installed either individually or as a comprehensive upgrade package.

The K2 operates at up to 95% A.F.U.E. and is ENERGY STAR rated. It is available in five sizes ranging from 80 to 180 MBH, and offers features such as 5:1 turndown and a “cold burner door” design that keeps heat in the heating system, enhancing overall efficiency. This boiler features a stainless steel heat exchanger that has been proven in millions of households. The K2 offers a simplified design which starts with a hinged inner door that isolates electronics and controls from combustion and waterside components, and opens up the inner compartment for fast, clutter-free service access. The Sage control, shared with the Burnham Alpine condensing boiler, offers factory preset for quick and easy out-of-the box setup without complicated instructions. The K2 also includes a pre-installed, high capacity boiler loop circulator, which is easily accessed through a convenient side panel, and an innovative split-voltage junction box, enabling simple, error-free wiring connections. Venting the K2 is simple as well…one pipe, two pipe, horizontal or vertical…K2 does it all.

K2 Firetube

Condensing Gas Boiler

The NEW K2 Firetube boiler is an addition to the K2 high-efficiency series. Joining the K2 Watertube boiler, the K2 Firetube features a stainless steel vertical firetube heat exchanger and is available in six sizes. A combi version is also available (155 MBH)! All models can be wall-hung and feature 5:1 modulation. The boiler’s dimpled, firetube heat exchanger provides lower pressure drop when compared to water-tube heat exchangers of similar capacity.

  • 95% AFUE – high efficiency and low emissions!
  • Six wall hung models; 85, 110, 155, 205, 270 MBH
  • 155 MBH combi model available!
    • Best-in-class DHW performance
  • Field proven, stainless steel fire tube heat heat exchanger
  • Advanced Sage2.2 Boiler Control provides “out-of-the-box” high performance and easy setup
    • Ergonomically angled touch screen display simplifies installation, operation, and diagnostics
    • Easily connects to optional Sage Zone Control for additional energy savings, system optimization, and “short cycle” prevention.
  • FULL SIZE easy access side service panel
  • UNMATCHED High Altitude Performance

Valuable Extras Included: 

  • Versatile top and bottom connections for supply & return (on heating-only boilers)
  • Universal vent connection for CPVC/PVC, polypropylene
  • Split-voltage junction box, fused easy-connect terminals
  • Outdoor reset and sensor (wired)
  • Piped and wired for low water cutoff installation (probe not included)
  • 5-year parts warranty

X-C

Condensing Gas Boiler

  • Up to 95% AFUE – high efficiency and low emissions!
  • Inexpensive, value-priced, and value-packed condensing boiler
  • 80 – 180 MBH (5 sizes)
  • 5:1 turndown saves energy
  • ASME “H” stamp-certified stainless steel water tube heat exchanger
    • No welds (less corrosion)
    • Cold burner door design, reduced heat loss, easy to service
  • Factory pre-set, advanced Sage2.2 Boiler Control and LCD display reduce installation time and provides EASY, “out-of-the-box” setup and high efficiency from initial startup.
  • 100% system tested at factory
  • Universal vent connection
  • Outdoor reset and sensor
  • 5-year warranty (parts)

ES2

Gas, Water Boiler

The ES2 blends unmatched performance with long lasting durability and exclusive energy saving features. Designed as an optimal replacement boiler for millions of homes with existing chimneys, the ES2 achieves an 85% AFUE. At the heart of the ES2 is one of the most advanced cast iron heat exchangers in the industry, and a well-insulated heavy-duty steel base for longevity. Even the ES2’s control system is class leading. The IQ Boiler Control System allows the ES2 to be easily equipped with an optional energy saving control package that can achieve up to a 15-20% reduction in fuel consumption according to most studies. Ask your contractor for an ES2 today… an unmatched combination of advanced features and proven durability.

  • Natural or LP gas
  • Limited Lifetime Manufacturer’s Warranty
  • Exclusive IQ Control System platform
  • Optional LCD touch screen for system monitoring
  • Time proven cast iron design for durability and reliability
  • Designed for homes with existing chimneys
  • Optional 5 or 10-year parts & limited labor warranty
  • Extended Boiler Warranty Plans are administered by CornerStone United, Inc.

ESC

Gas, Water Boiler

The Perfect Balance Between Efficiency and Practicality

The ESC boiler is a modern, versatile boiler designed to maximize the comfort and efficiency of nearly any heating system. It delivers the perfect balance of energy-saving performance, durability, and features for homes where a chimney-vented boiler is not an option. The ESC features an advanced cast iron heat exchanger, and a well-insulated heavy-duty steel base. It also features the IQ Control System which not only monitors boiler operation, but also gives the ability to add additional energy saving features to the boiler. By striking a balance between the types of advanced energy saving features typically seen on high-end condensing boilers and the tried-and-true durability of cast iron boilers, the ESC is uniquely able to offer homeowners the best of both worlds!

  • Direct vent (horizontal or vertical) or Power Vent
  • Natural or LP gas
  • Limited Lifetime Manufacturers Warranty
  • Exclusive IQ control system
  • Optional LCD touch screen for system monitoring
  • Time proven cast iron design for durability and reliability
  • Optional 5 or 10-year parts & limited labor warranty
  • Extended Boiler Warranty Plans are administered by CornerStone United, Inc.

Series 3

Gas, Water Boiler

Advanced Energy Saving Features Integrated with a Flexible Modern Design

The Series 3 shares many of its features with the award winning ES2, including the durable cast iron heat exchanger, rugged heavy gauge steel base, and the innovative IQ Control System. The IQ Control System allows the Series 3 to be easily equipped with an optional energy saving control package that, according to many studies, can deliver up to a 15-20% reduction in fuel consumption. In addition, the Series 3 provides even more flexible chimney venting options making it the right choice for millions of homes.

  • Natural or LP gas
  • Exclusive IQ Control System platform
  • Optional LCD touch screen for system monitoring
  • Time proven cast iron design for durability and reliability
  • Optimum venting flexibility for homes with existing chimneys
  • Limited Lifetime Manufacturers Warranty
  • Optional 5 or 10-year parts & limited labor warranty
  • Extended Boiler Warranty Plans are administered by CornerStone United, Inc.

Series 2

Gas, Water Boiler

Solid, Reliable, Time Tested Cast Iron Boiler with “Out-of-the-Box” Simplicity 

For years, the Series 2 has been the industry benchmark for cast iron gas-fired boilers. Its time proven design blends a long lasting cast iron heat exchanger with a heavy-duty steel base and high quality boiler controls to provide exceptional value for the homeowner. Heating professionals across the country have relied on the Series 2 to provide their customers years of comfortable, low maintenance operation making it an exceptional value in your home.

  • Natural or LP gas
  • Rugged cast iron heat exchanger
  • High quality boiler control components
  • Low cost of ownership
  • Durable steel jacket
  • Industry leading reliability
  • Limited Lifetime Manufacturers Warranty
  • Optional 5 or 10-year parts & limited labor warranty
  • Extended Boiler Warranty Plans are administered by CornerStone United, Inc.

Independence

Gas, Steam

For Residential Steam Applications

The Independence is a residential, gas-fired boiler for steam systems. It is available for either natural or LP gas and has AFUE ratings of up to 82%. Its large water volume and durable cast iron sections make it an ideal replacement for even the most challenging steam heating system. Standard equipment on the Independence includes cast iron push nipples that provide a permanent, watertight seal between sections, Honeywell operating controls, vent damper, and a rugged steel base assembly. A deluxe, insulated, powder-coated steel jacket completely encloses gas valves and burners, and reduces boiler heat loss. The exclusive Independence PV models have been specifically configured to operate as direct vented products for installation in homes with a damaged or irreparable chimney.

  • Natural or LP gas
  • Rugged cast iron heat exchanger
  • Stainless steel burners
  • 10 sizes to meet your specific needs
  • High quality boiler components
  • Time proven design for low cost of ownership
  • Optimum venting flexibility
  • 10-Year Limited Manufacturers Warranty
  • Optional 5 or 10-year parts & limited labor warranty
  • Extended Boiler Warranty Plans are administered by CornerStone United, Inc.

MPO-IQ

Oil, Water

Award Winning High-Efficiency Oil Boiler Loaded with Energy Saving Features!

The MPO-IQ blends unmatched performance with long lasting durability and exclusive energy saving features. Designed as an optimal replacement boiler for millions of homes with existing chimneys, the MPO-IQ has the highest average efficiency in its class. Its rating as high as 87% AFUE, easily exceeds ENERGY STAR levels for efficiency and may qualify for tax credits and/or utility rebates (check for availability in your area). At the heart of the MPO-IQ is an advanced 3-pass cast iron heat exchanger, combined with a well-insulated powder-coated steel jacket. Even the MPO-IQs Control System is best in class. The IQ Control System allows the MPO-IQ to be easily equipped with an optional Energy Saving control package that can achieve up to a 15-20% reduction in fuel consumption according to most studies. Ask your contractor today for an MPO-IQ oil-fired boiler; an unmatched combination of advanced features and proven durability.

  • Oil-fired boiler
  • Hot water only
  • Exclusive IQ Control System platform
  • High quality boiler control components
  • Time proven cast iron design for durability and reliability
  • Energy Star Certified – efficiency tax credits/rebates may apply
  • Designed for homes without existing chimneys
  • Available direct vent option when a chimney is not available
  • Limited Lifetime Manufacturers Warranty
  • Optional 5 or 10-year parts & limited labor warranty
  • Extended Boiler Warranty Plans are administered CornerStone United, Inc.

MegaSteam

Oil, Steam

The Most Efficient Cast-Iron Steam Boiler in the World!

The MegaSteam is a U.S. Boiler exclusive. Designed specifically as a residential oil-fired steam boiler, the MegaSteam achieves 86% AFUE efficiency with a 3-pass cast iron heat exchanger – the only one of its kind in the world. Its unique design makes it highly corrosion resistant, a fact that U.S. Boiler Company backs up by giving the MegaSteam the best warranty in its class. Not only does the MegaSteam have a 10-year warranty on the heat exchanger, it has the industrys only 5-year warranty on water side corrosion. The MegaSteam is available fully packaged with 3 inches of insulation, a deluxe powder-coated steel jacket and brand name components from industry leading companies. Unmatched in the industry!

  • Oil-fired boiler
  • For steam applications only
  • Unique 3-pass heat exchanger for exceptional efficiency and steam quality
  • Unsurpassed 5-year Warranty against water side corrosion
  • Tankless coils are available
  • 10-year Limited Warranty on the heat exchanger
  • Optional 5 or 10-year parts & limited labor warranty
  • Extended Boiler Warranty Plans are administered by CornerStone United, Inc.

V8H

Oil, Water (steam optional)

For years, the V8H has been an industry benchmark for cast iron oil-fired boilers. Its time proven design blends a long lasting cast iron heat exchanger with high quality components to provide exceptional value for the homeowner. The V8H is a reliable drop-in replacement for thousands of homes, simplifying and lowering installation costs. Additionally, it is available with a tankless hot water heating coil for those homes that do not have room for a stand-alone water heater. Heating professionals across the country have relied on the V8H to provide their customers years of comfortable, low maintenance operation, making it an exceptional value in your home.

  • 85% AFUE or ENERGY STAR certified 87% AFUE available with upgrade kit
  • Water or steam applications
  • Optional tankless water heater (front or rear)
  • Multiple oil burner options (Beckett, Carlin, Riello) includes burner cover for quiet operation
  • Durable push-nipple connections between boiler sections – will not deteriorate when exposed to petroleum-based antifreeze
  • Easy to clean and service – side and stop clean outs provide complete access to flueways
  • Full swing-away burner door
  • Limited Lifetime Manufacturers Warranty

Alliance SL

Domestic Hot Water Heater

High Efficiency Indirect-Fired Water Heater

The Alliance SL works in conjunction with the boiler to provide practically limitless domestic hot water. It has a higher recovery rate than competing tank type electric, gas or oil-fired hot water heaters, insuring plenty of hot water when you need it for your active lifestyle. The Alliance SL is manufactured with an extremely durable Hydrastone lining, making it the perfect choice for any application particularly when water quality, hardness, softness, and chlorides are an issue. When coupled with the IQ and Sage2.1 Control Systems found on select boilers from U.S. Boiler Company, the Alliance SL can be configured to take priority over space heating if necessary, and can automatically raise the boilers supply temperature to the tank to accelerate the speed at which the Alliance can recover after a significant hot water draw. This key feature is perfect for homes with multiple bathrooms, Jacuzzi style tubs and multi-head showers. To further ensure long lasting comfort and performance the Alliance SL is available with an optional limited lifetime warranty.

  • Up to 30% savings over conventional water heaters
  • Large layer of high-density R-16 insulation
  • Less than 1 degree of temperature loss per hour
  • 5 sizes available
  • Corrosion resistant Hyrdrastone lining
  • High capacity heating coil
  • 10/2/1 Limited Manufacturers Warranty
  • Optional Limited Lifetime Warranty

Radiant

For Water or Steam Systems

Designed to fit into wall recesses and other enclosures, Radiant Radiators provide unique advantages over other radiator products. The unitized construction of the Radiant Radiator permits the free passage of air through built-in air channels. Cooler air is drawn into the bottom of the radiator, heated, then pushed out the top. The result is a radiator that provides not only radiant heat, but convected (hot air) heat as well! These radiators are designed to be recessed into walls or other enclosures, which enables them to provide heat without taking up floor space. Featuring rugged cast iron construction, Radiant Radiators also have the benefits of other U.S. Boiler cast iron radiators, including smooth and even heat distribution, superb heat retention, and very quiet operation.

  • Designed for recesses or enclosures
  • Sectional design 4 to 44 sections
  • Durable cast iron construction
  • Provides radiant and convected heat
  • Superior heat retention, even heat distribution
  • Quiet operation

Slenderized

For Water or Steam Systems

Designed for versatility, durability and optimized heat output, the Slenderized radiator is the perfect choice for hot water or steam heat delivery. Offering a sectional design which provides lengths of 7″ to 84″, Slenderized radiators are adaptable to virtually every installation requirement. Made of durable cast iron, these radiators not only provide warm and soothing heat, they also retain heat and provide extended warmth when the boiler is not running. Cast iron construction also virtually eliminates the expansion and contraction sounds associated with other types of radiators, making your home both quiet and comfortable.

  • Slim design, durable cast iron construction
  • Sectional design, 4 to 48 sections
  • Superior heat retention, even heat distribution
  • Quiet operation

Baseray

For Water or Steam Systems

Baseray baseboard radiators put the warm, comfortable and quiet heating of a cast iron radiator in a low profile package. Offering up to 5 times the amount of radiant heat provided by similar metal finned baseboard designs, the rugged and reliable cast iron Baseray baseboard also offers the additional benefit of quiet operation. Cast iron is far less susceptible to the sounds associated with the expansion and contraction of other baseboard radiators, providing both a warm and quiet room. In addition, Baseray baseboards can be painted to coordinate with your room’s color scheme.

  • Low profile, durable cast iron construction
  • Even heat distribution
  • Durable design
  • Quiet operation
  • Works with all boilers made by U.S. Boiler Company.

Classic

For Water or Steam Systems

For the ultimate replacement radiator for vintage homes, look no further than Classic Radiators from U.S. Boiler Company. These beautiful cast iron radiators offer the same type of ornate surface detail commonly found on radiators of a bygone era, making them an ideal choice for restoration/renovation projects. Brass valves are also available to complete the elegant look of the Classic Radiator.

Similar to the other radiators in U.S. Boiler’s line, the Classic Radiator is made of durable, cast iron. Offering superb heat retention properties, cast iron radiators provide warm, soothing heating comfort and even distribution of heat in the room. Cast iron construction also provides very quiet heat, as the expansion noises typically associated with other forms of heat distribution are virtually eliminated.

  • Available in sizes from 3 to 9 sections
  • Can be used in hot water or steam home heating systems
  • Superb heat retention
  • Rugged construction
  • Quiet operation