--- product_id: 453293668 title: "Harman Heatilator Black ESP Thermistor Probe 3-20-11744" brand: "pellethead" price: "€ 72.22" currency: EUR in_stock: true reviews_count: 5 category: "Pellethead" url: https://www.desertcart.hr/products/453293668-harman-heatilator-black-esp-thermistor-probe-3-20-11744 store_origin: HR region: Croatia --- # 6.35 cm sensing distance Up to 300°C heat tolerance ±2.0% accuracy Harman Heatilator Black ESP Thermistor Probe 3-20-11744 **Brand:** pellethead **Price:** € 72.22 **Availability:** ✅ In Stock ## Summary > 🌟 Stay ahead of the heat game with precision you can trust! ## Quick Answers - **What is this?** Harman Heatilator Black ESP Thermistor Probe 3-20-11744 by pellethead - **How much does it cost?** € 72.22 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/453293668-harman-heatilator-black-esp-thermistor-probe-3-20-11744) ## Best For - pellethead enthusiasts ## Why This Product - Trusted pellethead brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted Reliability:** Backed by a one-year warranty and glowing user reviews, this probe is the upgrade your stove deserves. - • **High-Temp Durability:** Built to withstand extreme conditions up to 300°C, this probe guarantees reliable performance even in the hottest exhaust environments. - • **Precision Heat Sensing:** Experience pinpoint temperature accuracy with ±2.0% measurement precision, ensuring your stove runs optimally every time. - • **Seamless Compatibility:** Designed specifically for a wide range of Harman and Heatilator pellet and coal stoves—perfect fit, no guesswork. - • **Plug-and-Play Replacement:** Match the black wire thermistor probe effortlessly to your existing setup for quick, hassle-free installation and zero downtime. ## Overview The Harman Heatilator Black ESP Thermistor Probe 3-20-11744 is a high-accuracy, durable exhaust temperature sensor designed for a broad range of Harman and Heatilator pellet and coal stoves. Featuring ±2.0% measurement accuracy, a 6.35 cm sensing distance, and heat resistance up to 300°C, it ensures optimal stove performance. This black wire thermistor probe is a direct replacement part with a one-year warranty, trusted by professionals and homeowners alike. ## Description Fits Harman Pellet Stoves: ~ Accentra Cast FS (Pre Serial # 00840167) ~ Accentra Insert (Pre Serial # 008241201) ~ Advance (Pre Serial # 008360001) ~ Invincible Insert ~ Invincible RS ~ P38 Pellet Pro Plus (P38 +) ~ P61 (All Models, including those that have a red and white wire ESP) ~ P61A (Pre Serial # 008085803) ~ P68 (Pre Serial # 008280309) ~ PC45 (Pre Serial # 008055031) ~ PF100 (Black Wires) ~ XXV (Pre Serial # 008206292) Fits Harman Coal Stoves: ~ DVC 500 (Pre Serial # 008065076) ~ 44 Magnum Fits Heatilator Eco-Choice Pellet Stoves: ~ BA100 (Black Wires) Exhaust thermistor probe, ESP, Black Wire. There are 2 different thermistor ESP probes for the Harman line; one has a black wire, one has a red wire. You must order the same color thermistor probe as the one you are replacing. Replaces Part #s 3-20-00744 | 1-00-00744 | 3-20-11744 One Year Warranty Review: Product exactly as described - Quick delivery and exactly as specified works exactly as it should Review: Works perfect! - Fit perfect and was easy to install ## Features - Fits Harman Pellet Stoves: ~ Accentra Cast FS (Pre Serial # 00840167) ~ Accentra Insert (Pre Serial # 008241201) ~ Advance (Pre Serial # 008360001) ~ Invincible Insert ~ Invincible RS ~ P38 Pellet Pro Plus (P38 +) ~ P61 (All Models, including those that have a red and white wire ESP) ~ P61A (Pre Serial # 008085803) ~ P68 (Pre Serial # 008280309) ~ PC45 (Pre Serial # 008055031) ~ PF100 (Black Wires) ~ XXV (Pre Serial # 008206292) - Fits Harman Coal Stoves: ~ DVC 500 (Pre Serial # 008065076) ~ 44 Magnum Fits Heatilator Eco-Choice Pellet Stoves: ~ BA100 (Black Wires) - Exhaust thermistor probe, ESP, Black Wire. There are 2 different thermistor ESP probes for the Harman line; one has a black wire, one has a red wire. You must order the same color thermistor probe as the one you are replacing. - Replaces Part #s 3-20-00744 | 1-00-00744 | 3-20-11744 - One Year Warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07HJGD53B | | Brand | Pellethead | | Brand Name | Pellethead | | Customer Reviews | 4.4 out of 5 stars 133 Reviews | | Manufacturer | Pellethead | | Measurement Accuracy | ±2.0% | | Measuring Range | 100 - 300 °C | | Model Number | 3-20-11744 | | Mounting Type | probe mount | | Output Type | electrical signal | | Sensing Distance | 6.35 Centimetres | | UPC | 652174647279 810004060524 | | Upper Temperature Rating | 300 Degrees Celsius | ## Product Details - **Brand:** Pellethead - **Measurement Accuracy:** ±2.0% - **Measuring Range:** 100 - 300 °C - **Mounting Type:** probe mount - **Output Type:** electrical signal ## Images ![Harman Heatilator Black ESP Thermistor Probe 3-20-11744 - Image 1](https://m.media-amazon.com/images/I/51jTQNyWMNL.jpg) ![Harman Heatilator Black ESP Thermistor Probe 3-20-11744 - Image 2](https://m.media-amazon.com/images/I/71Eal4zHFcL.jpg) ![Harman Heatilator Black ESP Thermistor Probe 3-20-11744 - Image 3](https://m.media-amazon.com/images/I/61d1iMLViOL.jpg) ![Harman Heatilator Black ESP Thermistor Probe 3-20-11744 - Image 4](https://m.media-amazon.com/images/I/71THsZPAG1L.jpg) ![Harman Heatilator Black ESP Thermistor Probe 3-20-11744 - Image 5](https://m.media-amazon.com/images/I/71X+bqeU6YL.jpg) ## Questions & Answers **Q: Will this work on 3 knob Harmon pp38+ ?** A: Describe 3 knob? If you mean 1 knob for feed, 1 knob temp, 1 knob for air flow speed, yes it will. Just plug ESP sensor plug into one you take out. After you install new, make sure stove is unpluged from electrical source until completed. **Q: What is the length of the wire I will ned this for my pb105 Boiler i need it to be about 8 feet in length of black wire.** A: It's probably 2 feet. Maybe 3 at most. It's just 2 wires. U could probably splice wires in and just add the length u need **Q: Anyone know of this fits the Harman absolute 63?** A: I’m not sure about the harman 63. I have a harman that is from 1996. The reason I changed the probe was because my stove would run for approximately 1 hour then shut down. I changed the probe and my stove has not had a problem since. There is videos on Utube or google the year model and make of your stove. Good lunch hope it works out for you. **Q: Dies it work for a harman xxv?** A: I do not know. But, look at description and see if...what Harman models this part will fit. Other wise search by your Harman model number. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Product exactly as described *by B***B on 29 March 2025* Quick delivery and exactly as specified works exactly as it should ### ⭐⭐⭐⭐⭐ Works perfect! *by A***R on 14 September 2025* Fit perfect and was easy to install ### ⭐⭐⭐⭐⭐ Cette sonde thermique m'a été recommandé par un réparateur de fournaise au granules *by M***T on 30 December 2024* La sonde thermique fonctionne à la perfection! ## Frequently Bought Together - Harman Heatilator Black ESP Thermistor Probe, Fits Pellet Stoves, Coal One Year Warranty, Replacement Part # 3-20-00744 - Harman Room Sensing Thermostat Probe. 3-20-00906 - Harman Heatilator Red ESP Thermistor Probe for Models After 2008 Absolute 43 63 Accentra 52i Accentra Cast Allure DVC500 HF60 Invincible P35i P38 P43 P61 P61A P68 PC45 PB105 PF100 PF120 XXV 3-20-00844 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/453293668-harman-heatilator-black-esp-thermistor-probe-3-20-11744](https://www.desertcart.hr/products/453293668-harman-heatilator-black-esp-thermistor-probe-3-20-11744) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-08*