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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.
- Delivery to the USA:
- 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
4.4 ★★★★★
Based on 1227 reviews
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Product Reviews
★★★★★ 5
great product for my beard
Scent: Aged Bourbon
very good product, smells good. Keeps beard soft and controllable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 5
Works great & smells good!
Scent: Sandalwood
I was concerned the facial wash would be too harsh but thankfully I was wrong. Every part of this kit compliments the other. My skin and beard feel noticeably softer, and I haven't had any acne breakouts. The scent is masculine but not too strong. This is now my new routine.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Smells amazing!!
Scent: Sandalwood
My husband loves this set. He has sensitive skin, and loves this product since it doesn’t cause any irritation, plus it smells amazing! The face wash seems to be helping with beard acne, while not drying out the hair like other washes do, and the oil moisturizes well creating a healthy shine. I would say this is well worth your money if you are looking for a full starter kit to try something new and well-rounded for your beard care.
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Reviewed in the United States on March 26, 2026
★★★★★ 5
Smells great!
Scent: Sandalwood
My Partner loves the smell and says it makes his beard feel so soft. I would have to agree! The plastic brush is lame, the products are good!
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Reviewed in the United States on March 20, 2026
★★★★★ 4
Great product at great price...
Scent: Sandalwood
As someone who's had a beard off and on for the better part of a decade, I've gone through my fair share of beard products. For the most part they're all very similar. The washes for the most part clean and leave a very squeaky clean (almost dry) feeling out of the shower. Conditioners help a bit after a wash, but not anything to write home about, the only one I've tried that I really liked was Scotch Porter.
Oils help in hydrating, some are excessively oily and just don't look very appealing. Balms will help tidy up the overall shape of the beard, some are not really strong enough and just end up being another layer of oil on the wiskers.
Ok, now for this review... So I believe this to be the most natural and most effective line of products I've found to date. First off, the wash, oh my, the wash... I could really just stop right there. This is my favorite of the line.
It leaves my beard so soft I find myself not wanting to ruin it with a conditioner. If you try just one of these product, the wash is a must.
Next we have the detangler, this is pretty much a leave in conditioner. It softens out the beard even further and adds a slickness to the beard, it feels great.
The oil in the set is probably unnecessary since the wash and detangler do such a great job, but in any case it is a quality oil. The reason I say this is because it doesn't really stay oily in the hair, you can feel that after initially applying, it does absorb into either the follicle or skin, whichever it's intended to. As I mentioned, there are some oils that just don't do that, it's just greasy all day long.
The balm is probably my least favorite of the line, but only because it's not a very strong holding balm. It's kind of like I mentioned, another layer of oil. This one does also absorb so it's ok. I prefer a more tacky balm with more wax rather than oils.
Also, the scent of this line is a subtle chocolatey vanilla kind of smell. It's a very pleasant scent that my wife also enjoyed initially. However after about a week or so of using the product, I no longer get so much as a whiff, which is fine, I find that to be common with many of these beard oils and such.
So, overall a great set of products that leave my beard feeling soft and hydrated all day long, it also feels like quality, in the sense that it does absorb. It doesn't feel like you just applied baby oil all over your face. I cannot stress this point enough, there are some "name brand" beard care product that feel as such. That's why this product line really stands out to me. Five stars...
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Reviewed in the United States on May 27, 2026
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