
F170-40F Comparison
| photo | price | summary | rating |
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![]() | $10.00 | Condition is Used, COMMERCIAL STERLING UNIT HEATER 203675 F170-40F HIGH LIMIT SWITCH, shipping cost = $5.48 | 100.0% |
| photo | price | summary | rating |
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![]() | $104.95 | Condition is New, OEM Sterling Beacon-Morris High Limit Switch L170-40F Replaces 203675, FREE SHIPPING | ![]() |

The Sterling F170-40F Unit Heater, model number 203675, is a high-performing and efficient heating solution for various applications. Designed and manufactured by Sterling, this unit heater is known for its reliability, durability, and energy efficiency.
The F170-40F is a convective heater, meaning it uses the principle of convection to circulate and distribute heat. It is designed to provide uniform heat distribution in spaces up to 2,500 square feet. This unit heater is suitable for heating garages, workshops, warehouses, and other commercial and industrial environments.
The heater's 40,000 BTU input and 35,000 BTU output make it a powerful heating solution. It operates on natural gas or propane fuel, making it a versatile choice for various heating applications. The unit heater's efficiency rating is up to 84% AFUE, which means that it converts 84% of the fuel it consumes into heat, making it an energy-efficient option.
The Sterling F170-40F Unit Heater features a high limit switch, model number 203675, which is an essential safety component. This switch is designed to prevent overheating and ensure safe operation of the unit heater. The high limit switch is factory-set to activate at a temperature of 170 degrees Fahrenheit, ensuring that the unit heater does not exceed this temperature, which could lead to damage or safety hazards.
The high limit switch is a reliable and robust component, designed to withstand the harsh operating conditions of industrial heating applications. It is made of high-quality materials, including a ceramic element and a durable housing, ensuring long-lasting performance. The switch is easy to install, with clear instructions provided in the user manual.
In summary, the Sterling F170-40F Unit Heater with high limit switch, model number 203675, is a powerful, efficient, and reliable heating solution for various commercial and industrial applications. Its high limit switch is a crucial safety feature that ensures safe and optimal operation of the unit heater.
Pros and Cons of Buying a Sterling F170-40F Unit Heater with High Limit Switch (Model 203675)
I. IntroductionThe Sterling F170-40F unit heater is a popular choice for providing heating solutions in various applications such as garages, workshops, and other industrial settings. This heater comes with a high limit switch (model 203675) to ensure safe temperature control. In this analysis, we will discuss the advantages and disadvantages of purchasing this unit heater with a high limit switch.
II. Pros1. Efficient Heating: The Sterling F170-40F unit heater is known for its efficient heating capabilities. It can heat large spaces quickly and maintain a consistent temperature, making it a suitable choice for large workshops and garages.
2. Safety: The inclusion of a high limit switch is an essential safety feature. It shuts off the heater when the temperature reaches the preset limit, preventing potential fires or overheating issues.
3. Durability: Sterling unit heaters are built to last. They are constructed using heavy-duty materials and are designed to withstand harsh environments, making them an excellent investment for long-term use.
4. Versatility: The Sterling F170-40F unit heater is suitable for various applications, including garages, workshops, and industrial settings. It can be used as a primary heating source or as a supplement to existing heating systems.
5. Easy Installation: This unit heater is relatively easy to install. It comes with a factory-installed thermostat and can be mounted on the wall or on the floor, depending on the user's preference.
III. Cons1. Energy Consumption: The Sterling F170-40F unit heater consumes a significant amount of energy. It may lead to increased utility bills, especially in large spaces that require extensive heating.
2. Limited Temperature Control: The high limit switch on this unit heater may limit temperature control. Once the preset temperature is reached, the heater will shut off, which could result in inconsistent temperature fluctuations.
3. Maintenance: Though durable, the Sterling F170-40F unit heater requires regular maintenance to ensure optimal performance. This includes cleaning the heating element and checking the high limit switch periodically.
4. Size: This unit heater is relatively large, which may limit its installation options in smaller spaces. Careful planning is necessary to ensure the heater's proper placement and adequate clearance.
IV. ConclusionThe Sterling F170-40F unit heater with a high limit switch (model 203675) offers several advantages, including efficient heating, safety, durability, versatility, and easy installation. However, it also comes with some disadvantages, such as energy consumption, limited temperature control, maintenance requirements, and size.
V. RecommendationIf you're looking for a reliable and efficient heating solution for a large space with a focus on safety, the Sterling F170-40F unit heater with a high limit switch (model 203675) is a suitable option. However, if you require more precise temperature control or are concerned about energy consumption, you may want to consider alternative heating solutions. Always consult with a professional HVAC technician to ensure the best choice for your specific application.
Details:
specifications centrafurn:
- brand: Sterling
- mpn: F170-40f
- model: 203675 F170-40f
- type: Central Furnace
- unit type: Unit
- control style: Switch
- power source: Gas
- heating system: Furnace
offer centrafurn:
- in stock #: 2
- sold #: 22
- started: march 2, 2025
- prices: $10.00–$104.95
- item condition:
- Used
- New
- options: ship-to-home
- availability: in stock
- best offers: true
shipping centrafurn:
- service: usps ground advantage, usps priority mail express, usps priority mail
- transit: 4-8 days
- type: calculated
- carrier: usps
- class: standard, expedited
payments centrafurn:
- other
- credit card: discover
- wallet: paypal
seller centrafurn:
- rating: 100.0%
- city: fort wayne, indiana
- # reviews: 338
general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces
returns centrafurn:
- policy: returns accepted
- paid by: seller
- time: 30 days
- method: money back


