bing tracking image
  1. Accessories and Parts
  2. Dometic
  3. RV Vents and Fans
  4. Roof Vent
  5. Switches
Replacement 3-Speed Switch for Dometic FanTastic Roof Vent

Replacement 3-Speed Switch for Dometic FanTastic Roof Vent

Part Number: FVK1031-05
In Stock
You Save: 50%
Accessories and Parts
Add to cart
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images


Need help with installation?
Locate installers near me
Replaces the 3-way switch in your Dometic FanTastic RV roof vent (FV803350 or 801450). Allows you to change the fan speed. 1-800-940-8924 to order Dometic accessories and parts part number FVK1031-05 or order online at Free expert support on all Dometic products. Great prices and Fastest Shipping for Replacement 3-Speed Switch for Dometic FanTastic Roof Vent. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (123)
  • Q & A (0)
  • Videos (1)
  • Photos

Dometic Accessories and Parts - FVK1031-05

  • RV Vents and Fans
  • Roof Vent
  • Switches
  • Dometic

Replaces the 3-way switch in your Dometic FanTastic RV roof vent (FV803350 or 801450). Allows you to change the fan speed.


  • Replaces the 3-speed switch in your Dometic FanTastic 12-volt roof vent
    • Works with FV803350 and 801450 fans
  • Allows you to change the speed of your fan

K1031-05 Replacement 3 Way Switch for Dometic Fan-Tastic Vent RV Roof Vent Series 3350 and 1450

Video of Replacement 3-Speed Switch for Dometic FanTastic Roof Vent

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Fantastic Vent RV Vents and Fans FVK1031-05 Review

Today, we're going to take a look at replacement three speed switch for the Fan-Tastic Vent Roof Vent. This with replace the three speed switch in your Fan-Tastic Vent 12-volt Roof Vent. It is designed to work with the part number FV803350 fan, and we do sell that separately on our website. That part will allow you to change the speed of the fan. It controls the fan manually. You can turn the speed knob on the right here, and there are three speeds.

Low, medium, and high. But that should do it for the review on the replacement three speed switch for Fan-Tastic Vent Roof Vent.

Customer Satisfaction Score:

Customer Reviews

Replacement 3-Speed Switch for Dometic FanTastic Roof Vent - FVK1031-05

Average Customer Rating:  4.9 out of 5 stars   (123 Customer Reviews)

Replaces the 3-way switch in your Dometic FanTastic RV roof vent (FV803350 or 801450). Allows you to change the fan speed.


When we got to our site for a long stay we noticed that we had some electrical problems, just 2 after did some trouble shooting. One was our fan stop working, found that this switch went bad, ck web and as usual etrailer had the exact part number, its an easy plug and play to replace.
The other was a snap plug had not been snapped together, easy fix.
The fan now works like before and works fantastic.
Thanks again.


so glad has the parts I need especially the hard to find older parts. Will continue to to look to when I need parts. Plus it doesn't take weeks waiting.



installation was very easy and operation has been very good.


The replacement switch is an exact match to the original. Easy to install and I was up and running in less than 30 minutes.


Not installed yet. But right part. As always fast and easy to order and receive products from you.


very helpful part fit perfect up and running again


It’s so nice to have my new fantastic vent fan switch in and the fan working once again. It’s a simple five minute replacement. Thanks again to etrailer for a quick ship and a reasonable product price.



One year in, and still going strong. Thanks again etrailer.


The switch itself appears very well made and I have no doubt that it can last as long as the original switch did... 27 years. Just as important as the quality of the merchandise is the service I received. Shortly after placing my order, I received an email stating that my order had already shipped. It arrived two and a half days later, beating the estimated delivery date by two days. Great merchandise and fantastic service, two things that are seldom seen anymore. Thank you!


etrailer is great, no issues. Switch by fantastic fan, not so much. This switch should have lasted years not months. I hope the the replacement switch from etrailer lasts longer than the factory’s.



Well here is an update for our switch. So far so good. Haven’t had an issue and switch still working. Fingers crossed for another year.


Great products and services


Yes it works, good as new.


Bought a replace switch through [online vendor] and it stopped working within a month. Replaced it with this switch a year ago and it is still running my fan!





This didn't work for my Fantastic vent fan. I don't know what model number of fan I have, but my RV is a 2007 and the Fantastic Fan has/had a rain sensor control system that didn't work. I thought that this 3 speed controller would work, but one lead goes to a PC board and I don't know where to locate that lead to my PC board, which is probably why my fan doesn't work. The switch was fine, just didn't work for my fan.

Etrailer Expert

Sierra K.


Thanks for your reply. Unfortunately, I cannot find what model fan you have either. The replacement switch you bought just changes the speed of the fan, so if the fan is not working you may need to replace the whole unit. This is the fan that works with the replacement switch:



The product was great, but didnt work for my application. I kept it and may need to use it the future.


This was delivered on time and it replaced the 30-year old switch perfectly!! My class B is 30 years old and it is a relief I can find parts to keep it going in tip-top shape. etrailer has been a terrific resource for that over the years. Thanks!! :-)



A year later, my replacement switch has worked just great. These older van gems often need updates here and there. This product kept me from having to replace the entire fantastic fan. It works just as one wants it to and was easy to replace. Im still very pleased. Thanks etrailer!


My Fantastic vent fan model 3300 quite working, the fan motor worked with a set of jumper wires so Thought the problem might be the 3 way switch. After I received the new switch from etrailer it was a quick and easy job installing it. The fan now works like new. Finding the switch, ordering it and a quick delivery made it an easy fix. Thanks etrailer.



Still just like new!


Exact fit and function replacement for the original 3-speed switch for our 6 y/o Fantastic fan vent. Works like new.



Still working like new.


Perfectly match with old switch, no problem. eTrailer price is the best within the Google's universe. My order was out of stock, but the staff contacted me immediately and I got my order before the estimated date. Very impressed with their service. Highly recommended.

Donald T.


Still working great a year later


Had a single speed vent fan. I wanted to upgrade to a multi speed fan without having to change out the entire fan assembly. This switch was easy to install and works great. Saved money and time.

Joy C.


Fan switch is still working great after one year. Glad I purchased this.


Ordered 2 each replacement Fantastic Fan vent lids, lift crank assemblies and switches. etrailer had best pricing based on my internet search.

Items arrived quickly and were well packaged. I was pleased to discover that the replacement lids included the hinges. Changing out the lids was as simple as removing 4 screws from each old vent lid, fitting replacement lids, and reinstalling the old screws. Lift cranks and switches were exact replacements and also very easily installed.

I highly recommend etrailer for providing the exact replacement parts at best prices, and with speedy delivery!


Easy to order and very helpful when I called to check on delivery date. One can’t help out slow USPS


An exact replacement-No physical or electrical modifications-just remove the old switch and install the new one. Thanks for quick delivery.

Jessie C.


Working great-Thanks


Product was just as advertised. Connected the red +12 Volt line from the coach battery to the connection labeled "B" and the red lead to the fan connected to the lug labeled "M", since there is no circuit board, I left that unconnected.
Wala! Now I have my three speed ceiling ventilation fan back running.
Thanks for the great help and for having this obscure switch available for repairs.
I will use whenever I can for future RV solutions.
Ted R.


Package arrived quickly and in working order. I tried to order a switch from another company on [online retailer] to save money on shipping... HUGE mistake... the part took forever to arrive and was damaged once I received it. So... i decided to order the switch from etrailer and had a positive experience!!! the part arrived quickly and was an easy replacement. Save yourself stress and go with etrailer first. They won my future business. The shipping cost was reasonable, should have used them first.


Easy to install. This part restored the operation of the fan to new.


This switch was an exact replacement for the Fantastic Fan switch that quit working after 14 years. The fan is working properly again. Delivery was quick and was through USPS. I would buy from these guys again.


this order has been delivered very fast. It works as expected and solves the problem. The Fan-Tastic roof vent is 7 years old but the Replacement 3-Speed Switch fits 100%. Unfortunately the Thermostat doesn't work either so I had to bridge it to get the fan working.

Show More Reviews

See what our Experts say about this Dometic Accessories and Parts

Do you have a question about this Accessories and Part?

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeff D
Installed by:
Jeff D
Employee Leah S
Updated by:
Leah S
Employee Wilson B
Updated by:
Wilson B
Employee Kim H
Updated by:
Kim H
Employee Shelly K
Written by:
Shelly K

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Product Experts Available Now!
Call 1-800-940-8924