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Description
L210-20F Furnace Primary Limit Switch (-40°F to 180°F) - For ICP Heil Tempstar FurnacesL210 20F Primary Furnace Limit Switch Key Features Critical safety switch designed to shut down the gas valve and burner circuit if the furnace heat exchanger exceeds maximum safe operating temperatures. Thermal setting calibrated to automatically open the circuit on temperature rise at 210F and close (reset) at 190F. Constructed with a highly responsive bimetallic disc enclosed in a temperature resistant phenolic housing to prevent heat distortion.
L210-20F Primary Furnace Limit Switch
Key Features
- Critical safety switch designed to shut down the gas valve and burner circuit if the furnace heat exchanger exceeds maximum safe operating temperatures.
- Thermal setting calibrated to automatically open the circuit on temperature rise at 210°F and close (reset) at 190°F.
- Constructed with a highly responsive bimetallic disc enclosed in a temperature-resistant phenolic housing to prevent heat distortion.
- Features a flush-mount bracket and standard 1/4-inch male quick-connect spade terminals for immediate electrical integration.
Replaces / Cross-Reference Part Numbers
- L210-20F
- 34335001
- 34335-001
- HQ34335001TD
- 313408
- 338085-758
- 47-25349-06
Compatibility & Fitment
- Compatible with select residential gas furnaces manufactured by International Comfort Products (ICP), Heil, and Tempstar.
- Fits specific furnace models including: GDE050B12A2, GDE050B12G1, and GDE075F16A3.
When to Replace
- The furnace continuously short-cycles, shutting off the burner assembly well before reaching the target thermostat temperature.
- The furnace blower fan runs non-stop blowing cold air, indicating the system is locked out due to an open limit circuit.
- The main control board diagnostic LED continuously flashes an error code specifically for an open high-limit switch.
- A continuity test performed with a digital multimeter displays infinite resistance (an open circuit) while the switch is resting at room temperature.
Installation Tips
- Turn off the main electrical breaker to the furnace and ensure the unit is completely powered down before opening the service panels.
- Take a digital photograph of the existing wire connections to ensure the leads are routed back to the correct spade terminals.
- Remove the two hex screws securing the original switch to the heat exchanger bulkhead and carefully pull the component straight out.
- Align the new limit switch flush against the mounting surface and tighten the screws down evenly to prevent bending the mounting plate.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 3
meh!
Style: Steam Starter
I used to have a bissell steam cleaner for floors and it took a second to heat up and once it did, it steamed continually and I could turn it up or down or off. Sadly, it started to leak so I purchased this one. This is not at all like the one I had. It doesn't steam continually and the only way to turn it off is to unplug it. It doesn't clean as well as the one I had. I'm not a fan of this one. But sadly I threw away the box so now I'm stuck with it. It says you have to pump it to have it steam, almost like an iron for clothing, it steams for a second then stops.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Best steamer on market hands down
Size: Standard, Size: Standard
If you want to really deep clean your home then this will be your best friend. Comes with several different attachments which is great. It’s light weight so not heavy to carry around. So easy to put together or change attachments. They give you a measuring cup for the exact amount of water you need with a funnel so no mess putting water in. Heats up super fast which is awesome. Like i said light weight but strong steamer. The first thing i used it on was my oven which is 8 or 9 years old. From cooking especially holidays there was grease etc on it. I used the oven cleaners that say removes grease with one wipe Nope it those products actually ruined top of my stove made it dull and even other parts almost a rust look which I am not happy with. Wish I knew about this amazing machine before I ever used the store bought oven cleaner. Like I said it comes with several attachments ones for steaming your floors amazing. An attachment for grout also did an amazing job I was shocked my shower looks brand new my floors look brand new also. Another attachment is for steaming shower doors, walls, furniture and clothes works awesome. Another attachment for hard to reach places super amazing. Oh and the handle can come apart so you can make it long for when your steaming floors then make it smaller to carry around to do all the other steaming you want to do. Best part is that it didn’t break the bank the price was well worth it. I first saw this steamer on TickToc like with other items I have bought. But my go to place to see if these items are on Amazon cause Amazon is my go to place to shop, also the prices are always cheaper and you can get it in 2 days or other things I bought within hours. Where tik tok it takes weeks to get and always more expensive. So thank you Amazon for being an amazing company. If i could give more stars for this steamer I would give it a 20 star that’s how great it works. One thing I forgot to do was take a picture of my stove before but I did after. You can see where those store products ruined areas I mentioned. That was not caused by this amazing product.
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Reviewed in the United States on October 16, 2025
★★★★★ 5
Great all-in-one steam cleaner
Size: Standard
The Schenley 19-in-1 Steam Mop is super versatile and easy to use. It heats up quickly and the steam is strong enough to clean floors, grout, and bathroom surfaces without any chemicals.
I love how easily it switches to a handheld steamer—feels like multiple tools in one. The build is sturdy and it maneuvers well.
Overall it’s a great value and works really well.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Great Lightweight Steam Mop!
Size: Compact, Size: Compact
I’m really happy with the Schenley Steam Mop. It heats up in about 15 seconds and is ready to go almost instantly. It works well on my hardwood and tile floors, removing everyday dirt without needing any chemicals.
It’s lightweight, easy to maneuver, and I love that it stands on its own. The washable pads and adjustable steam modes are a nice bonus. The water tank is a bit small, but for regular cleaning it’s perfect.
Great value and very convenient for quick, effective cleaning!
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Reviewed in the United States on February 14, 2026
★★★★★ 4
Great versatile tool, not self-standing and missing a few accessories
Size: Standard
This is a great lightweight and versatile steam mop with good attachments. I would have given it five stars, but it is NOT self standing, does not auto-shut off, and does not have a built in cord wrap. You must manually buy the cord and then use their provided Velcro wrap to secure it in place. It also did not come with a storage bag for attachments, a cup to fill water tank, or a carpet glider.
It’s water tank lasts a long time during steaming and when combined with a floor cleaner, I apply directly to the floor, works wonders for our two large dog’s footprints on our 1000 sq. ft. of laminate flooring. One to two tanks of water clean the entire square footage.
After researching, I cannot find a better steam mop, with attachments that has all the features I want at $100. It also looks very sleek next to our Dyson. I would recommend.
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Reviewed in the United States on June 24, 2025