
550-225-315 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $99.99 | Condition is Used, Weil McLain 550-225-315 (0404) Boiler Control Ultra PhD, shipping cost = $8.13 | 99.8% |
![]() | $137.00 | Condition is Used, Weil McLain 550-225-315 (0404) Boiler Control Ultra PhD , shipping cost = $12.06 | 100.0% |
![]() | $149.90 | Top Pick! Condition is Used, Weil McLain 550-225-315 (0404) Boiler Control Ultra PhD, FREE SHIPPING | 100.0% |
![]() | $149.90 | Condition is Used, Weil McLain 550-225-315 (0404) Boiler Control Ultra PhD, FREE SHIPPING | 100.0% |
![]() | $152.00 | Condition is Used, Weil McLain 550-225-315 (0404) Boiler Control Ultra PhD , shipping cost = $12.06 | 100.0% |
![]() | $165.00 | Top Pick! Condition is Used, Weil McLain 550-225-315 (0404) Boiler Control Ultra PhD- Sensors Included!, shipping cost = $10.60 | 100.0% |
![]() | $399.99 | Condition is Used, Weil McLain 550-225-315 (0404) Boiler Control Ultra PhD , shipping cost = $15.99 | 99.7% |

The Weil-McLain 550-225-315 0404 Boiler Control Ultra PhD is a state-of-the-art, high-efficiency, and intelligent hydronic heating system control designed to optimize comfort and energy savings for residential applications. This versatile control offers both weekday and weekend programming capabilities, allowing users to customize heating settings according to their daily routines and temperature preferences.
The Ultra PhD control features a user-friendly, full-color LCD touchscreen interface that enables easy and intuitive operation. It offers advanced diagnostic capabilities for quick problem identification, as well as a built-in open and high temperature limit protection that safeguards against potential system issues.
One of the primary advantages of the Weil-McLain 550-225-315 0404 Boiler Control Ultra PhD is its adaptive learning technology, which continuously analyses home heating patterns and adjusts the system accordingly to achieve optimal comfort while minimizing energy consumption. Connectivity options include Wi-Fi and Ethernet, enabling remote system monitoring, control, and scheduling via the Weil-McLain iQ app.
Additional features include compatibility with frost protection, preferential zoning, and outdoor reset temperature control, further enhancing the overall performance and efficiency of the hydronic heating system. With a streamlined design and a commitment to providing reliable, innovative solutions, the Weil-McLain 550-225-315 0404 Boiler Control Ultra PhD is an excellent choice for homeowners seeking top-tier comfort and energy savings.
Weil-McLain 550-225-315 0404 Boiler Control Ultra PHD: A Detailed Analysis of Its Pros and Cons
Introduction:The Weil-McLain 550-225-315 0404 Boiler Control Ultra PHD is a popular and advanced boiler control system for residential and light commercial applications. This device comes with several features intended to optimize boiler performance and efficiency. In this analysis, we will examine the key advantages and disadvantages of the Weil-McLain Boiler Control Ultra PHD to help you make an informed decision.
Pros:1. Advanced features: This boiler control system comes equipped with several advanced features, such as an intuitive touchscreen interface, multiple communication protocols (MODBus, Bacnet, and LonWorks), type B fuel conversion capability, and special frost protection settings.
2. Increased efficiency: The Weil-McLain 550-225-315 0404 Boiler Control Ultra PHD helps improve boiler efficiency by optimizing fuel consumption based on the area's weather conditions and occupancy patterns.
3. Easy installation: The control system's user-friendly design and flexible communication protocols make it simple to install and integrate with other HVAC components, reducing installation time and hassle.
4. Enhanced safety: The Frost Protection Automatic and Limitation of Temperature options provide an additional layer of safety for the heating system during extreme weather conditions, ensuring optimal functionality and preventing potential damage.
Cons:1. Cost: The Weil-McLain Boiler Control Ultra PHD is a high-end boiler control system, which may come with a higher price tag than traditional thermostats or older control systems, making it a significant investment for some homeowners.
2. Complexity: With numerous advanced features, this control system may require a learning curve for users who are not familiar with sophisticated HVAC controls, resulting in potential difficulty in setup and operation.
Conclusion:In conclusion, the Weil-McLain 550-225-315 0404 Boiler Control Ultra PHD offers several advantages, including advanced features, increased efficiency, easy installation, and enhanced safety, making it an ideal choice for homeowners seeking optimal boiler performance and the ability to control their heating system effectively. However, its significant cost and complexity may deter some budget-conscious homeowners or those who prefer simpler solutions. Ultimately, the decision to purchase this control system depends on each homeowner's unique needs and preferences.
Recommendation:If you are a homeowner looking for a reliable, efficient, and advanced boiler control system, the Weil-McLain 550-225-315 0404 Boiler Control Ultra PHD could be an excellent investment for your heating system. Consider the system's advanced features and the potential cost savings from increased efficiency when weighing its benefits against the initial investment. If you are unfamiliar with complex HVAC controls, assessment from a professional HVAC technician may be recommended during the decision-making process.
Details:
This part was removed by a certified hvac technician from fully functioning system. Parts that are purchased should be installed by a certified hvac technician. The part has been inspected and was in working condition when removed.
specifications maxohvac:
- brand: Weil Mclain
- mpn: 550-225-315
- part type: Control
payments maxohvac:
- other
- credit card: diners-club
- wallet: google-pay
seller maxohvac:
- rating: 99.4%
- # reviews: 2003
- city: warminster, pennsylvania
shipping maxohvac:
- type: calculated
- transit: 2-6 days
- class: expedited
- carrier: usps, ups
- service: usps priority mail, ups 2nd day air
offer maxohvac:
- prices: $99.99–$399.99
- item condition: Used
- started: february 5, 2025
- sold #: 26
- in stock #: 5
- options: ship-to-home
- availability: in stock
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
returns maxohvac:
- policy: returns accepted
- method: money back
- time: 30 days
- paid by: buyer
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