Burnham Series 2 Boilers

Straightforward Heat. Built to Last.

There's a reason Burnham boilers show up in homes across the country winter after winter - they don't quit. The Burnham Series 2 boiler is a textbook example: classic cast iron construction, proven performance, and installation that won't make life harder on the job site.

For pros doing boiler installations, this is a no-drama solution. For homeowners, it's the kind of system that quietly does its job for years without demanding attention.

Built to Work Harder

The Series 2 doesn't chase trends - it delivers heat.
Cast Iron Heat Exchanger: Designed for longevity, not flash. The block retains heat, resists thermal shock, and shrugs off corrosion.
Electronic Ignition: Safer starts, cleaner burns, no wasted gas. A more efficient approach than standing pilot models.
Integrated Draft Hood & Venting Flexibility: Vertical and sidewall vent options make boiler installation smoother on retrofit jobs.
Factory-Wired Simplicity: Fewer loose wires = less time onsite. Units arrive pre-tested, wired, and ready to fire.
Made for Residential Use: Sized and built for home heating systems, especially in single-family homes using baseboard or radiators.

Versatile Heating for Hydronic Systems

The Burnham Series 2 fits in easily with traditional fin tube baseboard or cast iron radiators. With models ranging from 38,000 to 299,000 BTU/hr, it covers everything from a one-zone starter home to a multi-loop colonial.

Installers appreciate the accessible controls, generous wiring space, and universal flue connections. Homeowners appreciate the quiet operation and rock-solid consistency.

The Series 2 works perfectly in gas boiler systems for home heating, especially in homes using hydronic baseboard heating or radiators. As a residential cast iron boiler, it provides the thermal mass needed to maintain consistent room temperatures without cycling on and off.

Efficiency Without the Guesswork

With up to 84% AFUE, the Series 2 performs above standard efficiency for a non-condensing unit. Many pros rely on this model when upgrading from older equipment - boiler replacement jobs where cast iron is preferred and simplicity matters. No proprietary apps or diagnostic dongles necessary.

Full Access to Burnham Boiler Parts

Burnham boilers are made to last - but when a repair does come up, it shouldn't turn into a scavenger hunt. SupplyHouse keeps a full stock of Burnham Boiler Parts, from igniters to vent dampers, all direct-fit and ready to ship. This is real support for the real world.

The Burnham Series 2 boiler is less about features—and more about the fundamentals done right. When uptime matters more than marketing, this is the system that delivers.

FAQs about Burnham Series 2 Boilers

What is the difference between Burnham Series 2 boilers and other Burnham boilers?
The Series 2 is Burnham’s classic gas-fired cast iron line. It’s simpler than high-efficiency condensing models but built for long-term durability. It’s a favorite for traditional hydronic systems using baseboard or radiators.

Is the Burnham Series 2 suitable for residential boiler installation?
Yes. The Series 2 is made for residential use and is a great fit for single-family homes, especially those with existing cast iron radiators or baseboard. It’s available in multiple BTU ratings for flexible system sizing.

How efficient is the Burnham Series 2 boiler?
It delivers up to 84% AFUE, thanks to its electronic ignition and proven combustion design. While not condensing, it provides consistent, reliable efficiency without the need for complex service protocols.

Is the Burnham Series 2 boiler easy to install?
It’s designed with installers in mind—factory-wired, labeled connections, and straightforward controls. The integrated draft diverter and venting options also make it easier to fit into existing systems.

How do I size a Burnham Series 2 boiler correctly?
The best way to size any boiler is through a Manual J heat load calculation, but Burnham provides detailed guidance in their boiler sizing chart. Factors like square footage, insulation levels, and zone count all affect BTU requirements. The Series 2 offers multiple models to dial in the correct output.