---
product_id: 1729122
title: "M847D1012 Actuator, Spring Return Direct Mount Two Position 24 Vac"
brand: "honeywell"
price: "€ 256.71"
currency: EUR
in_stock: true
reviews_count: 7
url: https://www.desertcart.de/products/1729122-m847d1012-actuator-spring-return-direct-mount-two-position-24-vac
store_origin: DE
region: Germany
---

# Low voltage operation Spring-return mechanism Direct mount compatibility M847D1012 Actuator, Spring Return Direct Mount Two Position 24 Vac

**Brand:** honeywell
**Price:** € 256.71
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your HVAC Game with Precision Control!

## Quick Answers

- **What is this?** M847D1012 Actuator, Spring Return Direct Mount Two Position 24 Vac by honeywell
- **How much does it cost?** € 256.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/1729122-m847d1012-actuator-spring-return-direct-mount-two-position-24-vac)

## Best For

- honeywell enthusiasts

## Why This Product

- Trusted honeywell brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Design:** Built to withstand the rigors of HVAC applications.
- • **Precision Control:** Adjustable range stops for tailored airflow management.
- • **Reliable Performance:** Spring-return design ensures consistent operation every time.
- • **Versatile Replacement:** Directly replaces M847D1004, making upgrades a breeze.
- • **Effortless Installation:** Seamlessly mounts to 7/16 inch dampers for quick setup.

## Overview

The Honeywell M847D1012 Actuator is a low voltage, spring-return damper actuator designed for direct mounting on 7/16 inch diameter dampers. It features adjustable range stops and serves as a direct replacement for the M847D1004, ensuring reliable and efficient airflow management in HVAC systems.

## Description

HoneywellM847D1012 Actuator, Spring Return Direct Mount Two Position 24 Vac

## Features

- Low voltage, spring-return damper actuator
- Equipped with anti-rotation and drive shaft extensions for direct mounting to 7/16 inch diameter coupling style dampers
- Adjustable range stops
- Direct replacement for M847D1004

## Images

![M847D1012 Actuator, Spring Return Direct Mount Two Position 24 Vac - Image 1](https://m.media-amazon.com/images/I/81fv0LuldCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Exactly What I Needed!!
  

*by K***N on Reviewed in the United States on January 16, 2016*

Ordered last night at 8pm, was on my doorstep this morning at 11am with free Prime Same-Day delivery!  Thanks to reviews on Amazon and videos on YouTube, I was able to determine for certain that this was the correct replacement for a Trol-A-Temp RDMH damper motor (made by Honeywell).  One star off for Honeywell not making replacement motors simple to find on their web site and for including what looks to be 27th generation photocopied instructions from 1956.  Our original damper motor was 15 years old and I guess we're lucky that it lasted so long based on some of these reviews.  We have a three zone system, so I ordered two actuators and will just keep one handy as a spare.  For eighty bucks, it's cheap insurance.  Replacement was ridiculously easy - disconnect wires, loosen the set screw with a 1/8" allen wrench, remove, replace, tighten the set screw, connect wires, done!  Just remember that if you have to crawl through a confined space to make the repair, in addition to your tools, BRING THE NEW PART!!!

### ⭐⭐⭐⭐ 







  
  
    Replacement x 3
  

*by S***N on Reviewed in the United States on July 30, 2012*

I have a three zone HVAC system and started to have problems with the dampers. The first time was a $90 technician call and all he did was "free" the damper. Started having some other problems and a closer inspection found that the damper was not working correctly. Purchased one of these and replaced one on my system. Works great. On closer inspection of the old unit, I noticed the nylon gears had worn badly and the motor gear was skipping on the drive gear creating a clicking noise.While inspecting the replaced one, heard the tell-tale clicking from another damper. Replaced this one as well. The third one in my system in still working(8 years), but it is only a matter of time before it fails so I purchased a third one and I'm ready when it does. As another reviewer mentioned, the replacement is a piece of cake (one set screw and two wire nuts)and it sure beats paying the technician. There is no telling what he would charge for the part.Like another reviewer, I'd like to have a better unit, but that may involve a different damper and different programming on my system, so this is the easy fix. Glad Amazon had these available at a good price and quick shipping.

### ⭐⭐⭐ 







  
  
    You need it, but it WILL fail again!
  

*by B***6 on Reviewed in the United States on November 23, 2013*

Just be aware, these specific M847D Honeywell Actuators have a built-in failure point:  The larger gear (the driven gear) that is connected to the return spring is made from a plastic material, perhaps phenolic.  This forms the gearset with the actuator motor, on which the pinion (driving gear) is mounted.  The failure occurs when the plastic teeth on the larger gear finally break off and form a "dead" spot which prevents full rotation of the output shaft.  When powered, the motor begins to rotate the driven gear, only to encounter the missing teeth.  This produces a "clunking" or "clicking" sound which continues until the actuator is de-energized by the system control.  The zone controlled by the actuator is left in the "normal" position, which might result in no airflow, or constant airflow, depending on whether it is "normally open" or "normally closed".This is a glaring design flaw.  This gear could easily be replaced with one constructed from powdered-metal or similar material.  That would surely result in a longer life product.  I have replaced the same actuator on my home HVAC system zone damper FOUR (4) ! times in the last 10 years.  I started doing it myself after paying the HVAC guy $260 the first time!  Wish there was a better device for this purpose, but I'm not an expert.

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-05*