---
product_id: 453293668
title: "Harman Heatilator Black ESP Thermistor Probe 3-20-11744"
brand: "pellethead"
price: "S/.379"
currency: PEN
in_stock: true
url: https://www.desertcart.pe/products/453293668-harman-heatilator-black-esp-thermistor-probe-3-20-11744
store_origin: PE
region: Peru
---

# Precision temp sensing Compatible with 15+ Harman stove models Easy plug-and-play replacement Harman Heatilator Black ESP Thermistor Probe 3-20-11744

**Brand:** pellethead
**Price:** S/.379
**Availability:** ✅ In Stock

## Summary

> 🔥 Upgrade your stove’s brain with precision sensing power!

## Quick Answers

- **What is this?** Harman Heatilator Black ESP Thermistor Probe 3-20-11744 by pellethead
- **How much does it cost?** S/.379 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/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

- • **Reliable Warranty:** Backed by a 1-year warranty for peace of mind and long-term durability.
- • **Color-Coded Wiring:** Black wire design guarantees you get the exact replacement part you need—no guesswork.
- • **Wide Compatibility:** Fits over 15 Harman pellet, coal, and Heatilator stove models for seamless integration.
- • **Lightweight & Compact:** At just 18g and slim dimensions, it installs effortlessly without adding bulk.
- • **Precision Temperature Control:** Ensures optimal stove performance with accurate exhaust monitoring.

## Overview

The Harman Heatilator Black ESP Thermistor Probe 3-20-11744 is a lightweight, precision exhaust temperature sensor designed for seamless replacement in a wide range of Harman pellet, coal, and Heatilator Eco-Choice stoves. Featuring black wire color coding for easy identification, it ensures optimal stove efficiency and safety, backed by a 1-year warranty.

## Description

Harman Heatilator Black ESP Thermistor Probe 3-20-11744

## 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 |
|---------------|-------|
| Brand | Pellethead |
| Manufacturer | Pellethead |
| Model number | 3-20-11744 |
| Item Weight | 18 g |
| Package Dimensions | 13 x 8.1 x 1.09 cm; 18 g |
| Item model number | 3-20-11744 |
| Are batteries included? | No |

## 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)

## 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.

## 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

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-01-29*