U.S. Boiler ALTA AC-200-1G00 Condensing Combi Boiler 150MBH 95% AFUE

U.S. Boiler ALTA AC-200-1G00 High-Efficiency Condensing Combi Boiler

The U.S. Boiler ALTA AC-200-1G00 is a high-efficiency stainless steel condensing combi boiler designed to provide both space heating and on-demand domestic hot water in a single compact unit. With up to 95% AFUE efficiency and a wide 20–150 MBH modulation range, the ALTA delivers excellent performance, quiet operation, and long-term reliability.

This unit features sealed combustion, direct venting, and a touchscreen diagnostic display, making it ideal for high-efficiency residential applications and professional installations.

Key Features & Benefits:

• 95% AFUE high-efficiency condensing design

• Stainless steel heat exchanger

• 150 MBH maximum input / 20 MBH minimum modulation

• On-demand DHW up to 4.7 GPM

• Sealed combustion, low-NOx operation

• Horizontal or vertical venting options

• Integrated circulator and condensate trap

• Natural gas with easy LP conversion

Typical Applications:

• Residential hydronic heating

• Combi boiler replacements

• New construction and efficiency upgrades

⚠️ IMPORTANT INSTALLATION NOTICE:

This is a COMBI BOILER designed for space heating and domestic hot water. Buyer must verify venting requirements, gas type, water quality, and system compatibility prior to purchase. Professional installation required.

Features

• Genuine U.S. Boiler Company Condensing Combi Boiler
• Model: ALTA AC-200-IG00
• High-efficiency 95% AFUE rating
• 150 MBH heating capacity
• Combination boiler provides both space heating and domestic hot water
• Advanced condensing technology for maximum fuel savings
• Compact, wall-mounted design saves valuable floor space
• Stainless steel heat exchanger for durability and corrosion resistance
• Quiet, reliable operation
• Fully integrated electronic controls
• High domestic hot water production
• Modern cabinet with service-friendly front access
• Low emissions and energy-efficient performance
• Suitable for residential hydronic heating systems
• Designed for long service life and simplified maintenance

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Benefits

• One appliance provides both heating and hot water
• Reduces energy consumption with 95% AFUE efficiency
• Saves installation space with compact wall-mounted design
• Delivers dependable comfort during all heating seasons
• Lower operating costs compared to conventional boilers
• Advanced controls simplify operation and diagnostics
• Excellent solution for high-efficiency home heating upgrades

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Applications

• Residential homes
• Hydronic heating systems
• Radiant floor heating
• Baseboard heating
• Panel radiator systems
• Domestic hot water production
• New construction
• Replacement boiler installations
• Remodeling projects

Product details

Part / SKU	ALTAC-200-1G00

Package includes

• U.S. Boiler ALTA AC-200-1G00 Condensing Combi Boiler 150MBH 95% AFUE

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.