RESIDEO L4080B Aquastat Thermostat High Limit Immersion 100-200

( Brand: Resideo ), ( Manufacturer Part Number: L4080B ), ( Model: L4080B 1352 ), ( Part Type: Thermostat ), ( Compatible Brand: For Honeywell ), ( Sensor Technology: Temperature ), ( Control Style: Analog/mechanical ), ( Display Size: 1.5 In ), ( Power Source: Hydronic ), ( Color: Gray ), ( Material: Steel ), ( Compatible Product: Central Furnace ), ( Programmability: Non-programmable )

Review RESIDEO Aquastat Thermostat High Limit Immersion 100-200

The Resideo L4080B Aquastat Thermostat High Limit ImmerSION 100-200 is a highly advanced and reliable heating solution designed for use with hot water systems. This thermostat is engineered with a high limit immersion feature, which ensures the safe and efficient operation of your heating system.

The Resideo L4080B Aquastat Thermostat is suitable for use with hot water systems that require a temperature range between 100 F and 200 F (38 C and 93 C). Its high precision temperature sensing technology ensures accurate temperature control, maintaining the desired temperature for optimal system performance.

This thermostat is designed with a large, easy-to-read dial, allowing for quick and easy temperature adjustments. The high contrast markings on the dial make it simple to set and monitor the temperature, even in low light conditions.

The Resideo L4080B Aquastat Thermostat is built with a robust, corrosion-resistant stainless steel housing. This durable construction ensures the thermostat is able to withstand the rigors of continuous use in harsh environments.

One of the standout features of the Resideo L4080B Aquastat Thermostat is its high limit immersion function. This feature protects against potential overheating, which can damage your heating system or even pose a safety risk. The high limit immersion function is set to activate at a temperature of 167 F (75 C), providing an additional layer of protection for your system.

The thermostat also includes a temperature hold function, which maintains the temperature at the set point, even when the water flow rate changes. This ensures consistent temperature control, even in systems with varying water flow.

The Resideo L4080B Aquastat Thermostat is easy to install, with clear and concise installation instructions included in the package. The thermostat is compatible with a wide range of hot water systems, making it a versatile and adaptable solution for a variety of heating applications.

In summary, the Resideo L4080B Aquastat Thermostat High Limit ImmerSION 100-200 is a high-performance and reliable heating solution for hot water systems. Its accurate temperature control, durable construction, and additional safety features make it an excellent choice for ensuring the safe and efficient operation of your heating system.

Pros and Cons of buying a Resideo L4080B Aquastat Thermostat High Limit Immerison 100-200

1. **Automatic Operation**: The Resideo L4080B is an automatic thermostat, meaning it maintains a consistent temperature by turning the heating system on and off as needed. This ensures efficient energy usage and optimal comfort.

2. **High Limit Protection**: This model includes a high limit immersion feature, which prevents the temperature from exceeding a certain level, thus protecting your heating system from potential damage.

3. **Wide Temperature Range**: The thermostat can handle temperature ranges from 100 F to 200 F (38 C to 93 C), making it suitable for various heating applications.

4. **Easy Installation**: The Resideo L4080B is designed for quick and easy installation, saving you time and effort compared to complex systems.

5. **Durable Construction**: The thermostat is constructed with high-quality materials, ensuring longevity and durability in various heating environments.

6. **Accurate Temperature Control**: With its precise temperature sensing capabilities, the Resideo L4080B ensures consistent and accurate temperature control, ensuring optimal comfort and energy savings.

7. **Larger Size**: The Resideo L4080B has a larger size compared to some other thermostats, which might require additional space during installation.

8. **Manual Adjustments**: While automatic operation is convenient, some users might prefer manual adjustments for greater control over their heating system. The Resideo L4080B does not offer this feature.

9. **No Programmable Features**: This model does not include programmable features, which can limit its versatility and customization options for users.

10. **Cost**: The Resideo L4080B might be more expensive compared to basic aquastats or other thermostat models without the high limit immersion feature.

The Resideo L4080B Aquastat Thermostat High Limit Immerison 100-200 offers automatic temperature control, high limit protection, and a wide temperature range, making it an excellent choice for various heating applications. Its durable construction and easy installation also contribute to its appeal. However, its larger size, lack of manual adjustments, programmable features, and higher cost are potential drawbacks to consider.

If you're looking for a reliable, automatic thermostat with high limit protection for your heating system, the Resideo L4080B is a solid choice. However, if you require manual adjustments or programmable features, you might want to consider other models. Ultimately, it's essential to weigh the pros and cons against your specific heating needs and budget before making a purchase decision.

Details:

Features, High Limit Aquastat Controller has adjustable set point. Temperature Range F: Maximum - 40 F above set point or 265 F, which ever is lower. Insertion depth: 3 in. Model's available with second limit switch to shut off all gas the burner.

A factory-set stop is available on L4080 to prevent setting the control at too high a temperature. Vertical mounting. At the set point temperature, a diaphragm-actuated snap switch breaks power supply to burner primary control. Liquid fill in sensing element expands as the boiler temperature rises.

Product Specifications, Application: Immersion type controllers for hydronic heating systems that turn off the burner whenever boiler water temperature rises to set point. High Limit Immersion Aquastat, 100-200-Degree F Range, L4080B1352, type controllers for hydronic heating systems that turn off the burner whenever boiler water temperature rises to set point. Model's available for use with immersion wells or direct if faster response is needed.

part #: l4080b prices

• $54.95-$88.35

specifications thermoditto:

• brand: Resideo
• mpn: L4080b
• model: L4080b 1352
• part type: Thermostat
• compatible brand: For Honeywell
• sensor technology: Temperature
• control style: Analog/mechanical
• display size: 1.5 In
• power source: Hydronic
• color: Gray
• material: Steel
• compatible product: Central Furnace
• programmability: Non-programmable

payments thermoditto:

• wallet: Google-pay
• other
• credit card: Discover

shipping thermoditto:

• carrier: USPS
• class: Standard
• transit: 4-10 Days
• type: Calculated
• cost: $8.35
• service: USPS Ground Advantage

general thermoditto:

• condition: New
• Heating, Cooling Air > Thermostats > Programmable Thermostats

returns thermoditto:

• policy: No Returns

offer thermoditto:

• options: Ship-to-home
• started: February 22, 2026
• best offers: True
• availability: In Stock
• quantity: 1
• sold: 0

seller thermoditto:

• city: South Berwick, Maine
• rating: 100.0%
• # reviews: 116

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