Built for Elevation: Rheem^® FT^™ Series Boilers Approved Up to 12,000 Feet

When specifying a boiler or combi boiler, altitude can have a significant impact on combustion performance and product selection. Contractors and distributors serving customers across varying elevations need equipment that can adapt to changing installation conditions without adding complexity.

With approved installation from 0 to 12,000 feet above sea level (ASL), the Rheem^® FT Series boilers provide one of the broadest altitude ratings available in the residential boiler and combi boiler market, helping contractors simplify product selection and serve more applications with confidence.

Why Altitude Matters

As elevation increases, air density decreases, reducing the amount of oxygen available for combustion. The FT Series automatically adjusts the firing rate to compensate for the natural reduction in combustion air that occurs at higher elevations, helping maintain reliable performance throughout its approved altitude range.

Adding to this capability, FT Series boilers feature a built-in altimeter that automatically detects the installation altitude and adjusts the unit accordingly. This eliminates the need for manual altitude programming or setup, helping contractors save installation time and reduce the potential for configuration errors. The result is a simpler, more streamlined installation experience regardless of jobsite elevation.

Equipment not designed for higher elevations can experience reduced performance, lower efficiency, and combustion-related issues. The FT Series is engineered to operate across a broad range of elevations while simplifying the installation process for contractors.

Broad Altitude Flexibility for More Applications

The Rheem FT Series boiler and combi lineup is approved for installation from 0 to 12,000 feet above sea level (ASL).

This broad altitude capability is especially valuable for:

• Mountain and high-elevation communities
• Contractors serving diverse territories
• Distributors supporting multiple markets
• New construction and replacement projects

Benefits for Contractors

• Greater installation flexibility across service territories
• Built-in altimeter automatically detects and adjusts for altitude
• No manual altitude setup or field adjustments required
• Faster, simpler installation regardless of location
• Reduced potential for setup errors and callbacks
• Simplified product selection and ordering
• Reduced risk of selecting the wrong model for the application
• Less time spent verifying altitude requirements
• Consistent installation and service experience across jobs

Real-World Example

Consider a contractor servicing customers throughout Colorado’s Front Range and Rocky Mountain region.

Projects may range from:

• Denver: 5,280 ft.
• Vail: 8,150 ft.
• Breckenridge: 9,600 ft.
• Leadville: 10,152 ft.
• Keystone: 11,280 ft.
• Copper Mountain: 11,154 ft.
• Climax Mine area: approximately 11,300 ft.
• Mount Crested Butte: approximately 9,950 to 10,200 ft.

With the FT Series, the same boiler platform can be specified across all these applications. The unit’s built-in altimeter automatically detects the installation altitude and adjusts boiler operation, accordingly, eliminating the need for manual altitude settings and helping simplify installations.

This broad altitude capability helps contractors standardize on a single product platform, reduce complexity, and confidently serve a wider range of residential heating applications throughout mountainous regions.

Inventory Advantages for Distributors

Broad altitude approval can also simplify inventory management by helping distributors:

• Reduce SKU complexity
• Simplify forecasting and inventory planning
• Minimize ordering mistakes
• Improve product availability
• Support a wider range of applications with fewer product variations

Engineered for Diverse Installation Conditions

Whether installed at sea level, in foothill communities, or in high-elevation mountain towns, the FT Series is designed to deliver reliable heating and domestic hot water performance throughout its approved altitude range.

Combined with high-efficiency condensing technology, a stainless-steel fire-tube heat exchanger, and advanced combustion controls, the FT Series provides a versatile solution for a wide range of residential heating applications.

The FT Series Advantage

Approved for installation from 0 to 12,000 feet above sea level, the Rheem FT Series helps contractors simplify product selection, supports distributors with reduced inventory complexity, and provides flexibility to serve more applications with a single platform.

One boiler platform. Up to 12,000 feet of installation flexibility.  Find the right boiler for every altitude.