
PRS2704 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $39.00 | Top Pick! Condition is New, Lochinvar, PRS 270, ANA-103-235 Pressure Switch, shipping cost = $9.14 | 100.0% |
![]() | $150.25 | Condition is New, Lochinvar Blocked Drain Pressure Switch PRS2704, Model ANA-103-235, shipping cost = $16.45 | 100.0% |

The Lochinvar PRS2704 Blocked Drain Pressure Switch ANA-103-235 is a crucial component in ensuring the efficient and safe operation of your heating system. This pressure switch is specifically designed for use with Lochinvar's Commercial Boilers and Water Heaters.
The ANA-103-235 model is a blocked drain pressure switch, which means it is responsible for detecting and responding to pressure changes caused by a blocked or clogged drain line. The switch is factory set to activate at a pressure of 15 psi (pounds per square inch) above the normal operating pressure of the system. This threshold is intended to prevent the buildup of pressure that could potentially cause damage to the system or pose a safety risk.
The switch features a transparent, impact-resistant housing that allows for easy monitoring of the pressure level indicator. The indicator turns red when the pressure threshold is exceeded, alerting users to the potential issue. Additionally, the switch comes with a test port, which allows for periodic testing to ensure proper function.
The ANA-103-235 is designed for use with commercial applications and is able to handle high flow rates and pressures. It is constructed from durable materials, including a stainless steel diaphragm and a brass body, ensuring long-lasting performance and resistance to corrosion.
Installing the ANA-103-235 is a straightforward process. It can be easily connected to the system using the provided 1/2" NPT (National Pipe Thread) inlet and outlet ports. The switch also comes with a mounting bracket, which allows for secure attachment to a wall or other surface.
In summary, the Lochinvar PRS2704 Blocked Drain Pressure Switch ANA-103-235 is an essential component for maintaining the safe and efficient operation of your commercial boiler or water heater system. Its durable design, easy-to-use features, and ability to detect and respond to blocked drain lines make it an indispensable addition to any commercial application.
Lochinvar PRS2704 Blocked Drain Pressure Switch ANA-103-235: A Comprehensive Analysis
The Lochinvar PRS2704 Blocked Drain Pressure Switch ANA-103-235 is an essential component in boiler systems, designed to protect against potential drain line blockages. In this analysis, we will discuss the pros and cons of investing in this pressure switch.
Pros:1. Enhanced Safety: This pressure switch is designed to automatically shut off the boiler when the pressure in the drain line exceeds a predetermined level, preventing potential damage to the system and ensuring user safety.
2. Sensitive Detection: The ANA-103-235 switch is sensitive to even minor blockages, ensuring timely intervention and potential cost savings from avoiding expensive repairs or replacements.
3. Easy Installation: The pressure switch is relatively easy to install, with clear instructions and a user-friendly design that can save time and effort for installers and maintenance personnel.
4. High-Quality Construction: Lochinvar is a reputable brand known for producing high-quality components, assuring customers of the durability and reliability of the PRS2704 pressure switch.
Cons:1. Additional Cost: Purchasing a pressure switch like the Lochinvar PRS2704 ANA-103-235 adds to the overall cost of the boiler system, which may be a concern for some budget-conscious customers.
2. Potential False Alarms: While the switch is designed to be sensitive, it may occasionally trigger false alarms due to minor fluctuations in the system pressure, which could lead to unnecessary downtime and maintenance costs.
3. Limited Compatibility: This pressure switch is specifically designed for use with Lochinvar boilers, which may limit its applicability for those using other brands or models.
Conclusion:The Lochinvar PRS2704 Blocked Drain Pressure Switch ANA-103-235 offers significant benefits in terms of safety, sensitivity, and ease of installation. However, potential customers should consider the added cost, potential for false alarms, and limited compatibility before making a purchase decision. Ultimately, the decision to invest in this pressure switch depends on the specific needs and budget of the user, as well as the importance placed on system safety and potential cost savings from early blockage detection.
Recommendation:For users seeking a reliable, sensitive, and easy-to-install blocked drain pressure switch for their Lochinvar boiler system, the PRS2704 ANA-103-235 is a strong recommendation. However, those on a tight budget or concerned about potential false alarms may wish to explore alternative options or consult with a professional before making a final decision.
Details:
Lochinvar blocked drain pressure switch PRS2704, model ANA-103-235, pn: model: 300va pilot duty at 120 to 277 vac, use copper conductors only.
specifications maxohvac:
- brand: Lochinvar
- mpn: Prs2704
- model: Ana-103-235
- part type: Pressure Drain Switch
- country/region of manufacture: United States
offer maxohvac:
- sold #: 18
- started: may 21, 2025
- in stock #: 2
- prices: $39.00–$150.25
- item condition: New
- availability: in stock
- options: ship-to-home
payments maxohvac:
- credit card: discover
- wallet: paypal
- other
- money order
shipping maxohvac:
- carrier: usps, ups, fedex
- transit: 3-9 days
- type: calculated
- service: usps priority mail, ups ground, fedex ground or fedex home delivery
- class: expedited, standard
returns maxohvac:
- paid by: buyer
- policy: returns accepted
- method: money back
- time: 30 days
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
seller maxohvac:
- # reviews: 4062
- rating: 100.0%
- city: virginia beach, virginia
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