Burnham Alpine Boilers

Burnham Alpine boilers are high-efficiency condensing gas boilers built for residential and light commercial hydronic heating systems. The line spans 80,000 to 399,000 BTU across six sizes, giving contractors options for anything from a single-family retrofit to a larger multi-zone installation. A stainless steel heat exchanger extracts heat from the combustion process, helping the Alpine line reach a 95% AFUE rating. The boiler modulates its firing rate based on outdoor temperature, so it isn't cycling on and off at full output for every call for heat. Smaller sizes, from 80,000 to 210,000 BTU, install as either a floor-standing or wall-hung unit, which gives installers flexibility in tight mechanical rooms. The Alpine line runs on natural gas or LP gas and carries ENERGY STAR certification along with a 5-year residential parts warranty on units under 300,000 BTU. For contractors quoting condensing boiler replacements, Alpine sizing and mounting flexibility narrows down equipment selection fast.

Subcategories

• Wall-Hung Alpine Boilers: Contractors working in tight mechanical rooms or multifamily buildings often spec the wall-hung Alpine configuration. Available across the 80,000 to 210,000 BTU sizes, a wall-hung unit frees up floor space entirely, mounting instead to a wall stud or bracket. It uses the same stainless steel heat exchanger and Sage2.3 control platform as the floor-mount version, so performance doesn't change with the mounting style. It's a common pick for condo boiler rooms and smaller commercial spaces where square footage is limited.
• Floor-Mount Alpine Boilers: Larger installations, especially those needing more than 210,000 BTU of output, typically call for the floor-mount Alpine models, which scale up to 399,000 BTU. Floor mounting suits larger commercial boiler rooms and multi-boiler cascade systems where weight and service clearance matter more than wall space. Each floor-mount unit still carries the 95% AFUE rating and stainless steel heat exchanger found across the line. Technicians appreciate the added clearance for burner service and venting work on the bigger sizes.
• Sage2.3 Control System: Every Alpine boiler ships with the Sage2.3 Boiler Control System, which uses a touch screen display for setup and diagnostics. The control modulates the burner's firing rate against outdoor temperature, cutting down on the short-cycling that wastes fuel and wears out components faster. Installers configure boiler settings directly from the touch screen without needing a separate add-on module for basic modulation. It's the same control platform across the wall-hung and floor-mount sizes, so training carries over between installations.
• Natural Gas and LP Gas Configurations: The Alpine line runs on natural gas or propane (LP) gas, with the fuel type set during commissioning rather than requiring a different model. Fuel flexibility matters for contractors bidding jobs in areas without natural gas service, since the same Alpine sizing chart applies either way. ENERGY STAR certification applies across both fuel configurations, and the 5-year residential parts warranty on units under 300,000 BTU covers natural gas and LP installations alike. It keeps quoting simpler since the equipment selection doesn't change based on fuel source.

Buying Guide

Choosing the right Alpine boiler starts with a heat loss calculation for the building, since Burnham's 80,000 to 399,000 BTU range covers everything from a small residential retrofit to a larger commercial application. Once the load is known, mounting space usually decides the configuration: wall-hung suits mechanical rooms where floor space is scarce, while floor-mount models handle the higher end of the range and larger service clearances.

Fuel availability is the next filter. Confirm whether the site has natural gas service or needs an LP gas setup, since Burnham Alpine Boilers ship in configurations for both without changing the core equipment. For jobs where multiple Alpine units are staged together, the Sage2.3 control's touch screen interface keeps setup and diagnostics in one place, which simplifies commissioning compared to older analog control panels.

Warranty terms matter for the quote, too. Residential installations under 300,000 BTU carry a 5-year parts warranty, so contractors should flag that threshold when sizing a job close to the boundary. ENERGY STAR certification can also factor into utility rebate programs, which is worth checking before finalizing a bid. Matching BTU output, mounting style, fuel type, and warranty terms to the job upfront cuts down on change orders once installation starts.

Frequently Asked Questions

What size Alpine boiler do I need for a residential retrofit?

Burnham Alpine boilers range from 80,000 to 399,000 BTU across six sizes, so the right pick depends on the building's calculated heat loss rather than the size of the equipment being replaced. A proper heat loss calculation keeps the new boiler from being oversized, which hurts condensing efficiency. Sizes from 80,000 to 210,000 BTU also offer wall-hung mounting if floor space is tight.

Can an Alpine boiler run on propane instead of natural gas?

Yes, the Alpine line is configured for both natural gas and LP gas during commissioning. Fuel type doesn't change the BTU sizing chart or the AFUE rating, so contractors can quote the same equipment for sites without natural gas service.

What's the efficiency rating on Burnham Alpine boilers?

The Alpine line carries a 95% AFUE rating with a stainless steel heat exchanger and modulating burner. It's also ENERGY STAR certified, which can help qualify installations for local utility rebate programs.

Do Alpine boilers use a digital control system?

Yes. Every Alpine boiler ships standard with the Sage2.3 Boiler Control System, which uses a touch screen display for setup, diagnostics, and outdoor-temperature-based modulation. It's a step up from the analog controls found on older boiler lines, and it's consistent across both wall-hung and floor-mount sizes.

What's covered under the Alpine boiler warranty?

Residential installations under 300,000 BTU get a 5-year parts warranty from Burnham. Commercial jobs and units above that threshold should be checked against current warranty terms before bidding, since coverage can differ at the higher end of the range.