Boilers
Burnham STMX550N-CH-KS, SteamMax, 550 Input MBtu, 82.5% AFUE, Hydrolevel, Commercial Natural Gas Steam Boiler, Chimney Vent, 10 Year Warranty, Split block (8-12 sec.) (Knockdown)
In Stock. Ships in 1-7 Business Days.

1 days | 2 days | 3 days | 4 days | 5 days | 6 days | 7+ days | |
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Friday | Mon | Tue | Wed | Thu | Fri | Mon | Tue |
Saturday | Tue | Wed | Thu | Fri | Mon | Tue | Wed |
Sunday | Tue | Wed | Thu | Fri | Mon | Tue | Wed |
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$220-$300 | EAST COAST By Zip Code & Weight |
$300-$400 | MIDWEST / SOUTH By Zip Code & Weight |
$400-$450 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$220-$300 | EAST COAST By Zip Code & Weight |
$300-$400 | MIDWEST / SOUTH By Zip Code & Weight |
$400-$450 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$350-$500 | EAST COAST By Zip Code & Weight |
$450-$750 | MIDWEST / SOUTH By Zip Code & Weight |
$650-$900 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$450-$550 | EAST COAST By Zip Code & Weight |
$600-$900 | MIDWEST / SOUTH By Zip Code & Weight |
$950-$1300 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NYC Metro Area |
$160 | Rest Of Contiguous US |
For any questions regarding shipping cost please Call us at 973-482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$30 | NY / NJ / CT Metro Area |
$60 | Across the USA |
For any questions regarding shipping cost please Call us at (973) 482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NYC Metro Area |
Not Available | Rest Of Contiguous US | We unfortunately can not ship this material outside of our trucking area. |
For any questions regarding shipping cost please Call us at (973) 482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$30 | Across the USA |
For any questions regarding shipping cost please Call us at 973-482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$60 | Across the USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$70 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$110 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | Pickup |
$75 | NY / NJ / CT Metro Area |
Not Deliverable | Rest of Contiguous USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$200 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$40 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
FREE | NY / NJ / CT Metro Area |
$220-$300 | EAST COAST By Zip Code & Weight |
$300-$400 | MIDWEST / SOUTH By Zip Code & Weight |
$400-$450 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$50 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$90 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$75 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$110 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
$8,615.94

$9,035.07

$9,454.98

Product details
Burnham STMX550N-CH-KS SteamMax 550 Input MBtu - 81% AFUE - Commercial Natural Gas Cast Iron Steam Boiler (Knockdown - Assembly Required)
The NEW SteamMax gas-fired steam boiler is the industry’s new benchmark for longevity, efficiency, and flexibility. It’s the ALL-NEW gas steam boiler that you’ve been waiting for!
FEATURES- Available pre-cut, near boiler piping kits for perfect piping every time
- Rear, low-profile draft diverter clears low overhead and eases installation
- Tappings on both ends for greater piping flexibility and additional controls
- Packaged boilers or knock-downs, full, split or individual sectional assemblies
- Additional tapping (1.25”) for indirect/hydronic zone

Burnham Steam Max Series

The new benchmark for longevity, efficiency, and flexibility in gas steam boilers.
INDUSTRY-LEADING VALUE
- 10-year waterside corrosion warranty (residential only, under 300 MBH only)
INDUSTRY-LEADING DESIGN FOR RELIABILITY & PERFORMANCE
- Robust, corrosion-resistant cast iron sectional design extends heat exchanger life in a wide variety of water conditions
- Larger “steam chest” with increased steam disengaging area above a stable water line; wider internal waterways
- No heat transfer pins above water line, no crown sheet fins; greater corrosion resistance in critical areas
- More heat transfer pins below water line, provide ample heat transfer and efficiency
- Leak-free metal push nipples, not gaskets
INDUSTRY-LEADING SIMPLICITY FOR STEAM INSTALLATIONS
- Available pre-cut, near boiler piping kits for perfect piping every time (residential models 075-250 MBH)
- Rear, low-profile draft diverter clears low overhead and eases installation
- Tappings on both ends for greater piping flexibility and additional controls
- Packaged boilers or knock-downs, full, split or individual sectional assemblies
- Additional tapping (1.25”) for indirect/hydronic zone

Standard Equipment
- UNMATCHED 10-yr limited heat exchanger warranty, 10-yr limited waterside corrosion
- Cast iron sectional design with metal push nipples
- Wide waterways
- Heat transfer pins below water line
- Large steam disengaging area (steam chest)
- Tappings on both ends
- SteamMax boiler control suite
- Industrial-grade pressuretrol
- Probe-type low water cut-off
- Optimized stainless steel burners
- Step-opening gas valve
- 2” risers
- Rear-mounted low profile draft diverter
- Vent damper (models 075-299)
- Junction box
- Thermostat isolating relay
- 15 PSI relief valve
- Gauge glass
Commercial Builds (450-550 MBH)
- Dual combustion controls, manual reset ignition, alarm (UTEC®1003 and UTEC 1145-2)
- Additional auxiliary LWCO & pressuretrol, manual reset
- Draw rods/nuts/plates included

The versatile V8 does it all!
Hot water or steam heat, the Burnham V8H can handle it. This efficient and highly adaptable boiler offers a variety of sizes and configurations to fit most home heating needs, and is available with an optional tankless hot water heater*. In addition, an optional high efficiency kit is also available, providing ENERGY STAR certified performance!
American-made quality and efficiency
The cast iron heat exchanger in the V8H is precision cast in Zanesville Ohio. Comprised of 100% recycled material and designed for years of reliable home comfort, It features a surface area which is up to 40% larger than many competitive models. This means that the boiler is able to heat up quicker, enabling a faster transfer of heat and greater efficiency. Every heat exchanger is water and pressure tested prior to assembly. The V8H is assembled in Lancaster, PA. Before it ships, every component used in the boiler is subject to strict standards of quality control and performance verification, which are constantly monitored during the manufacturing process. The end result is a boiler which will provide years of trouble free, efficient, and reliable service.
New boiler controls (water versions)
The new Intelligent Oil Boiler Control brings high end control capability to the V8H. By continuously monitoring all aspects of boiler operation, this control system is able to deliver increased efficiency and impressive energy savings.
Specification Sheet
MPN ? Manufacturer Part Number | STMX550N-CH-KS |
---|---|
UPC / GTIN | 672616837686 |
Manufacturer | Burnham |
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. | SteamMax |
Weight ? Weight | 1,675.00 |
---|---|
BTU Input | 550,000 |
AFUE | 82% |
Dimensions ? Dimensions | 0 X 0 X 0 |
Material ? The material(s) used in the construction of the product. | Cast Iron |
---|---|
Boiler Type | Commercial |
Fuel Type | Natural Gas |
Venting | Chimney Vent |
Venting Type | Chimney Vent |
Water Heater Type | Commercial |
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