Whitfield Pressure Switch Kit For Some Advantage Models & Quest # 12145903

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SKU 12145903
MPN 12145903
  • Genuine Whitfield Replacement Part
  • Extremely Durable
  • Ships FREE with orders over $99
  • 30-Day hassle free return policy
  • Express Shipping available
  • 90 Day Warranty On All Items
  • Learn More...


Whitfield Advantage/Quest Pressure Switch Kit

The Pellet Stove Pressure Switch Kit, by Lennox # 12145903.

The stove vacuum switch indicates to the stove that it has an airflow through the venting in the proper direction. If the vacuum switch doesn't register a pressure difference, it will not remain closed. When it opens the auger is stopped, depriving the stove of fuel and leading to shutdown

Replacement For Part Number s :
  • 12145903
  • 12125903

Compatible Models


  • Advantage I
  • Advantage II-T
  • Advantage II-T C
  • Quest Plus FS WP4
  • Quest Plus INS WP4


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. 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 $99!

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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.

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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.

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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.

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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.

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Read More About Our Shipping Information

Please Note: Due to the COVID-19 emergency, USPS and UPS will not guarantee delivery times. Unfortunately, we will not be able to provide a refund for packages shipped which are late. Packages may be delayed 1-2 days. Everyone is trying their best under these circumstance. Thank you for your understanding.

Customer Reviews

Based on 6 reviews
Whitfield pressure switch
It worked!
Vaccumn pressure switch
Representative was very helpful on
Pressure switch review


Ask a Question
  • I have a Whitfield Advantage II-TC. The manual which I downloaded here shows the POSITIVE PRESSURE SWITCH pn# 12125903 and that coincides with the switch on the stove. This part number is 12145903 (4 instead of 2). Everything looks correct and I am sure this is the right part, but your thoughts?

    According to the manual this is the correct replacement part for that pellet stove.

  • Does it come with the hose?

    The switch does not come with a hose however the SRV7000-0450 hose fits it well and can be used.

  • I have a Whitfield profile 30-2 pellet stove. I need a pressure switch. Part no. Installed is 16020016. Is 12145903 the replacement? It looks identical. Other manuals I’ve looked up say part number 16050001 is the replacement, but it doesn’t look the same as the original .Thanks for any input

    Whitfield has changed the design of the vacuum switch they originally used at the beginning of manufacturing this pellet stove. Since then they have started installing the vacuum switch seen here: 16050001

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