Add $175.00 for FREE shipping
Why Risk Breathing Dirty Air?
Filtertone Air Filter Alarm
Filtertone Dirty Air Filter Alarm for HVAC System
Click for larger image and other views
Filtertone Air Filter
Dirty Air Filter Alarm for HVAC System
Item# 301FT
Free shipping on orders over $175 - See Details


  • Save money on utility bills
  • Extend the life of your air system
  • Pleasant tone
  • Works for air conditioning or heating
  • 5 year warranty

Essential Info

Regular replacement of dirty air filters help reduce indoor pollution, allergens, and extends the life of your air system. With the Air Filter Alarm you'll never have to worry (or forget) about dirty air filters. This alarm will let you know when it is time to change the filter on your air conditioning or heating system by alerting you with a pleasant tone. Easily attaches to the air filter (on the blower side) with push-on pins.

What's Included

  • Filtertone
  • Attachment bar
  • More Info

    Clean Air
    The EPA has consistently ranked indoor air pollution among the top five environmental risks to public health. Failing to change your air filters on a regular basis can expose you to health risks. The Filtertone Air Filter Alarm reminds you to replace filters when needed by emitting a pleasant tone to alert you that it is time for a change.

    Eliminates Guesswork
    The Filtertone is easy to install - just attach it to you home air conditioner or heating furnace filter. As dirt builds up, it produces an increase in pressure which triggers the tone. You can enjoy the savings in utility bills that a clean, efficient system provides, and extend the life of heating and air conditioning units because they will no longer be straining to force air through clogged filters.



    Manufacturer:Energy Technology Laboratories
    Manufacturer Product No.:05058
    Dimensions:3 3/16” x ½”
    Product Weight: 1.2 oz
    Warranty:5 year, limited

    Important notes:
    Only merchandise credit for defective items returned within 30 days of purchase. No other returns allowed on this item.
    Manufacturer contact information: Energy Technology Laboratories, Tel: (775) 398-7680


    Filtertone Air Filter       
    Filtertone Air Filter       


    4 Ratings
    5 star: 0%  (0)
    4 star: 25%  (1)
    3 star: 50%  (2)
    2 star: 0%  (0)
    1 star: 25%  (1)
    Average Customer Rating
    (4 customer ratings)
    Share your thoughts with other customers
    dave -- Texas   1/23/2014
    Simply did not work.
    CARL -- grandview, MO   1/23/2009
    Good idea but will not work effectively on any pleated filter media.

    Related Items

    Sign-up for Exclusive Email offers 
    How to Order Track Your Package Shipping Returns Contact Us Customer Service Retail Store
    Getting Started Learning Center FAQ Dealers Customer Testimonials Affiliate Program
    About Us INSTEON Press Awards Employment Guarantees Security & Privacy
    Free Catalog Email Newsletter Forum RSS Site Map
    Have questions? Call us at 800-762-7846 (Mon-Fri 5am-7pm and Sat 6am-3pm PT) or send us a message
    Place your order by 3pm PT for same day shipping
    Copyright 1995-2014 SMARTHOME™
    Verisign Secure Site PayPal Acceptance Mark