Fits checked Oct 1, 2026 · How we check
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GeneralAire · humidifier · whole house bypass

GeneralAire 1042 replacement filter

Use part 990-13. Replace 1 to 2 times per humidification season.

The filter that fits

Maker lists this model

GeneralAire 990-13 pad

990-13 Vapor Pad

Part number
990-13also sold as 7002
How many
1 per unit
How often
Replace 1 to 2 times per humidification season

The maker does not say how many pads the unit holds; one is assumed.

Buy 990-13 pad on AmazonManufacturer page

Opens an Amazon search for GeneralAire 990-13 pad. Check the listing says 990-13.

See the sources

Does your exact model share this filter?

GeneralAire labels several versions of the 1042. Check the label on your unit.

  • 1042 takes 990-13
  • 1042LH same filter · Current model; its page names Replacement Vapor Pad 990-13

Sources

High confidence: the manufacturer names this exact model on a live page. Each line is the page we read and the day we read it.

  • Which filter fits generalfilters.com Maker's own page checked Oct 1, 2026
    Fits: GeneralAire ® Models 1137, 1040, and 1042 Series; SL16, 709, and 990
  • How often generalfilters.com Maker's own page checked Oct 1, 2026
    Common Question: How often should I change my Vapor Pad ®? You'll want to replace your Vapor Pad ® 1-2 times per humidification season.
  • What's in it generalfilters.com Maker's own page checked Oct 1, 2026
    Your Vapor Pad ® is constructed using an expanded aluminum base, coated with a hydrophilic material that absorbs water.
Show all 6 sources

Which filter fits

  1. generalfilters.com Maker's own page checked Oct 1, 2026
    Fits: GeneralAire ® Models 1137, 1040, and 1042 Series; SL16, 709, and 990
  2. generalfilters.com Maker's own page checked Oct 1, 2026
    Model Name: 1042LH Part Number: 5144 ... Replacement Vapor Pad ® number 990-13 (GFI #7002)
  3. generalfilters.com Maker's own page checked Oct 1, 2026
    Model Name: 1042LH ... Style By-pass
  4. generalfilters.com Maker's own page checked Oct 1, 2026
    Model Name: 1137 Part Number: 5137 ... Vapor Pad Size 990-13

How often

  1. generalfilters.com Maker's own page checked Oct 1, 2026
    Common Question: How often should I change my Vapor Pad ®? You'll want to replace your Vapor Pad ® 1-2 times per humidification season.

What's in it

  1. generalfilters.com Maker's own page checked Oct 1, 2026
    Your Vapor Pad ® is constructed using an expanded aluminum base, coated with a hydrophilic material that absorbs water.