Utica MAH125 Modulating Gas Boiler Wall Mount 95% AFUE 125k BTU

Overview

Utica MAH125 Wall-Mounted Modulating Condensing Gas Boiler – Heating Only

The Utica MAH Series MAH125 is a high-efficiency wall-mounted modulating condensing boiler designed for residential and light-commercial hydronic heating applications. With 95% AFUE efficiency and an advanced Artificial Intelligence control, this boiler automatically self-commissions, recognizes natural or LP gas, and continuously adjusts combustion for optimal performance — with no LP conversion kit required.

Built with a 316L stainless steel heat exchanger and burner, the MAH125 delivers exceptional durability and efficiency. The unit ships with a complete control package, outdoor reset sensor, and labor-saving piping manifold, making installation fast and contractor-friendly.

Key Features & Benefits:

• 95% AFUE high-efficiency performance

• 125,000 BTUh input / 113,000 BTUh heating capacity

• AI-driven self-calibrating combustion

• 5.7:1 modulation for superior comfort and fuel savings

• Sealed combustion, wall-mounted compact design

• Approved for PVC, CPVC, PP, or concentric venting

• Indirect water heater ready (heating model only)

Typical Applications:

• Residential hydronic heating systems

• Multi-family buildings

• Light commercial facilities

• High-efficiency boiler replacements

Manufacturer: Utica Boilers

Part Number: MAH112503600110

Series: MAH

Model: MAH125

⚠️ California Proposition 65 Warning: Cancer and Reproductive Harm – see p65warnings.ca.gov

Product details

Part / SKU	MAH112503600110

Package includes

• Utica MAH125 Modulating Gas Boiler Wall Mount 95% AFUE 125k BTU

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