Description
Weil McLain 383-500-774 Heat Exchanger Replacement for Ultra 105 Series 1-3
The Weil McLain 383-500-774 is an OEM replacement heat exchanger designed specifically for the Ultra 105 condensing gas boiler, Series 1 through 3. When the heat exchanger in your Ultra 105 shows signs of wear, corrosion, or failure, this direct-fit replacement restores your boiler to factory performance standards — minimizing downtime and protecting your hydronic system investment.
Why Replace with an OEM Heat Exchanger?
The heat exchanger is the heart of any condensing boiler. It transfers combustion heat to the system water while withstanding the thermal and chemical stresses of high-efficiency condensing operation. Using a genuine Weil McLain replacement ensures proper fit, correct material compatibility, and reliable long-term performance — critical for maintaining the efficiency and safety ratings of your Ultra 105 boiler.
Key Features
- OEM replacement heat exchanger for Weil McLain Ultra 105 boilers
- Compatible with Ultra 105 Series 1, 2, and 3
- Engineered for direct, drop-in replacement — no modifications required
- Designed to maintain the high-efficiency condensing performance of the Ultra 105
- Manufactured to Weil McLain’s quality and durability standards
- Helps restore factory BTU output and thermal efficiency ratings
Compatibility
- Boiler Model: Weil McLain Ultra 105
- Compatible Series: Series 1, Series 2, Series 3
- SKU: 383-500-774
Application
Ideal for HVAC technicians and hydronic heating professionals performing heat exchanger replacement service on residential or light commercial Weil McLain Ultra 105 boiler installations. Always verify series compatibility before installation and follow all Weil McLain service guidelines.
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