Englander Vacuum Switch, CU-VS-AMP


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Englander Vacuum Shut-Down Switch Part CU-VS

Englander Vacuum Shut Down Switch, 0.05" WC. This is the "Door Ajar Switch." The vacuum hose from this switch connects directly to the firebox of the stove. This part is used in 2006 and later model pellet stoves.

2006 and later model pellet stoves use 1 ea CU-VS and 1 ea PU-VS. Pre 2006 models use 2 ea PU-VS.

The Vacuum Shut Down Switches (Part # PU-VS and CU-VS) help control various functions of the unit. If an operational error occurs in the unit, a switch will either stop the top (feed) auger or shut the unit off; if the unit turns off an E-1 Code (error code) will appear in the Heat Range and Blower Speed windows of the Control Board. Situations which could cause this include power failure, Combustion Blower failure, improper flue installation, a blocked flue (from rodents, nests, etc.), or “dirty burning” from burning improper fuel.

NOTE: The "door ajar" vacuum switch port must be kept clean, or the top auger will cease to function. Locate the porthole to the right of the burn pot and, with the stove unplugged and cooled down, use a brush or pipe cleaner (not a vacuum) to keep this port clear of ash or other debris (see picture).

Replacement For Part Number :
  • CU-VS

UPC #: 794909902021

Compatible Models


  • 10-CDV, 49-SHC22, 49-TRC22
  • 10-CPM, 49-SHCPM, 49-TRCPM
  • 25-CAB80, 55-SHPCAB80, 55-TRPCAB80
  • 25-CB120, 55-SHPCB120, 55-TRPCB120
  • 25-EP, 55-SHPEP, 55-TRPEP
  • 25-EPI, 55-SHPEPI, 55-TRPEPI
  • 25-IP, 55-SHPIP, 55-TRPIP
  • 25-PAH, 55-SHPAH, 55-TRPAH
  • 25-PDV, 55-SHP22, 55-TRP22
  • 25-PDVC, 55-SHP10, 55-SHP10L, 55-TRP10
  • 25-PI, 55-SHP20, 55-TRP20
  • 25-PUF, 55-SHP240, 55-TRP240
  • 25-SSP01, 55-SHSSP01, 55-TRSSP01
  • 25-PUF, 55-SHP240, 55-TRP240

Technical Specs

Length 3"
Width 2⅜"
Height 2"
WC 0.05"



Unfortunately, sometimes products do not work like they are supposed to. We offer a 90 day warranty on manufacturer defects. Some manufacturers make this a very simple and easy process unfortunately others do not. Items must be used in accordance with the manufacturers guidelines to qualify for warranty replacement. Please be advised that warranty claims for these parts may take up to 4 weeks for processing, and customers must cover shipping.

Shipping Info

This Item Qualifies For Free Shipping With Orders Over $199!

When Will My Order Ship

All orders are typically processed within 24 hours of receiving payment and are shipped from us same day if placed before our shipping cutoff time (Monday - Friday: 1PM, Saturday: 10AM, Sunday: No Shipping), orders placed after our cutoff time are shipped the next morning.

How Does Free Shipping Work?

Most orders over $99 qualify for free shipping! Orders which ship for free are shipped with either USPS or UPS based on our discretion. If you are using a PO box, free shipping orders will always go USPS.

Is Expedited Shipping Available?

We offer both overnight and two day air shipping services for all orders placed within the Continental United States. For information on shipping cut-off times, go to our shipping page.

Do You Ship To Canada?

We ship to Canada! We estimate USPS to take 4-10 days once receiving your package from us. We do not offer expedited shipping of any kind to Canada. Please allow an extra 2-5 days for all shipments to Canada. Free shipping is not available to Canada.

Do You Ship To Alaska Or Hawii?

We ship to both Alaska and Hawaii! We do not offer next day or two day shipping to Alaska or Hawaii. Free shipping is not available to Alaska or Hawaii.

Do You Ship Outside The US Or Canada?

Unfortunately, at this time we do not offer international shipping other than to Canada.

If you wish to calculate shipping for an item which does not qualify for free shipping, or if you would like the cost to expedite your order, please do the following. Add the item you want to order to your cart and click here to be taken to the cart page where you can enter your country, state / province, and zip code for an estimate.

Shipping Time Estimations

For information on shipping time estimations, see either the Shipping Information & Transit Times on the cart page, or go to our shipping page.

Read More About Our Shipping Information

Customer Reviews

Based on 19 reviews
larry s.
Pellet stove

Had the part I needed and was delivered quickly, installed part with ease

Bonnie M.
vacuum switch

fixed the problem with quality product and fast delivery!

Andrea A.

Englander Vacuum Switch, CU-VS-AMP

Terry G.

The part came on time and works just fine.

Gary J.
Stove not working

It turns out it wasn’t what I needed but it is in and it works.


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