Will this work on 3 knob Harmon pp38+ ?

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.

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.

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

Anyone know of this fits the Harman absolute 63?

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.

Dies it work for a harman xxv?

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.

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Description

🔥 Keep Your Stove Running Smoothly!

ONE YEAR WARRANTY - Backed by a warranty, showcasing the commitment to quality and reliability.
WIDE COMPATIBILITY - Fits various Harman and Heatilator models, ensuring you have the right part for your stove.
EXTENSIVE MODEL RANGE - Compatible with multiple pellet and coal stove models, making it a reliable choice.
ADVANCED ESP TECHNOLOGY - Accurately measures exhaust temperatures for efficient and safe stove operation.
COLOR CODED FOR ACCURACY - Available in black and red wire variants to maintain optimal performance.

The Harman Heatilator Black ESP Thermistor Probe is a high-quality replacement part designed for various pellet and coal stoves. With advanced ESP technology for precise temperature monitoring, color-coded accuracy for easy installation, and a one-year warranty, this probe ensures your stove operates efficiently and safely.

Reviews

M**S

Works great

Worked perfect, and easy to install

2.05.2025

T**Y

Just what we needed!

Our pellet stove was not working properly but this part fixed it right up. It now works like it did when it was brand new!

9.11.2024

R**Y

Harman 61 pellet stove

Works great and solved my stoves 3 blink code of a bad esp probe. It now runs as it should. I ordered 2 to have a spare. Very fair price Thanks Pellethead

7.12.2024

A**R

Works perfect!

Fit perfect and was easy to install

14.09.2025

D**Y

two differan ones black or red know the differance+

works perfect

5.02.2025

K**Y

Quality

Works

31.12.2024

S**N

Worth the money

So far so good. Worth the money. Very easy install

10.03.2024

G**Y

You get what you pay for I guess! Cheap item

Great price but I guess you get what you pay for. First one died in the first month of use. Guess I will go back to the higher priced ones. I bought two so I will update if the second one does any better I guess.UpdateSecond one is already throwing an error code after only a couple days of use.

11.01.2020

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