Fits checked Oct 1, 2026 · How we check
Filter Fit Finder
Menu

Carrier · humidifier · whole house bypass

Carrier HUMCRLBP replacement filter

Use part P110-3545. Replace annually (owner's manual).

The filter that fits

Maker lists this model

Carrier P110-3545 pad

Carrier Humidifier Pad P110-3545

Part number
P110-3545
How many
1 per unit
How often
Replace annually (owner's manual)
Buy P110-3545 pad on AmazonManufacturer page

Opens an Amazon search for Carrier P110-3545 pad. Check the listing says P110-3545.

See the sources

Look-alike models that take a different filter

The small bypass HUMCRSBP takes P110-1045 and the water-saver HUMCRWBP takes P110-4545.

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 carrier.com Maker's own page checked Oct 1, 2026
    Page title 'Performance™ Large Bypass Humidifier | HUMCRLBP | Carrier'; its Documents list links 'Owner's Manual for Bypass and Fan Powered Humidifiers' (OM-HUMCRBP-01.pdf), the manual whose pad step names the Part No. for this humidifier. The manual itself prints no model code.
  • How many brandportal.carrier.com Maker's own page checked Oct 1, 2026
    Carrier owner's manual OM-HUMCRBP-01 (B2207853A, © 2018 CAC/BDP), linked as a document from the carrier.com page for this model, maintenance steps slide the single Humidifier Pad out of the scale control insert and slide a new one in
  • How often brandportal.carrier.com Maker's own page checked Oct 1, 2026
    Carrier owner's manual OM-HUMCRBP-01 (B2207853A, © 2018 CAC/BDP), linked as a document from the carrier.com page for this model, PDF p3: 'It should be changed annually with the exception of the Water Saver humidifier which should be replaced at least twice per heating season'
Show all 8 sources

Which filter fits

  1. carrier.com Maker's own page checked Oct 1, 2026
    Page title 'Performance™ Large Bypass Humidifier | HUMCRLBP | Carrier'; its Documents list links 'Owner's Manual for Bypass and Fan Powered Humidifiers' (OM-HUMCRBP-01.pdf), the manual whose pad step names the Part No. for this humidifier. The manual itself prints no model code.
  2. brandportal.carrier.com Maker's own page checked Oct 1, 2026
    Carrier owner's manual OM-HUMCRBP-01 (B2207853A, © 2018 CAC/BDP), linked as a document from the carrier.com page for this model, PDF p7 (Small and Large Bypass): 'Replace the Humidifier Pad (Part No. P110-1045 for Small Bypass Humidifier and Part No. P110-3545 for Large Bypass Humidifier) with a new Humidifier Pad'
  3. carrier.com Maker's own page checked Oct 1, 2026
    Page for the HUMCRLBP (per its URL): Performance™ Large Bypass Humidifier; At a glance Type Bypass Evaporator Pad Expanded aluminum
  4. brandportal.carrier.com Maker's own page checked Oct 1, 2026
    Carrier owner's manual OM-HUMCRBP-01 (B2207853A, © 2018 CAC/BDP), linked as a document from the carrier.com page for this model, PDF p8 (Fan Powered): 'Replace the Humidifier Pad (Part No. P110-3545) with a new Humidifier Pad'
  5. brandportal.carrier.com Maker's own page checked Oct 1, 2026
    Carrier owner's manual OM-HUMCRBP-01 (B2207853A, © 2018 CAC/BDP), linked as a document from the carrier.com page for this model, 'Humidifier Pad (Part No. P110-3545)'
  6. carrier.com Maker's own page checked Oct 1, 2026
    Page title 'Performance™ Large Fan-Powered Humidifier | HUMCRLFP'; its Documents list links 'Owner's Manual for Bypass and Fan Powered Humidifiers' (OM-HUMCRBP-01.pdf), the manual whose pad step names the Part No. for this humidifier. The manual itself prints no model code.

How many

  1. brandportal.carrier.com Maker's own page checked Oct 1, 2026
    Carrier owner's manual OM-HUMCRBP-01 (B2207853A, © 2018 CAC/BDP), linked as a document from the carrier.com page for this model, maintenance steps slide the single Humidifier Pad out of the scale control insert and slide a new one in

How often

  1. brandportal.carrier.com Maker's own page checked Oct 1, 2026
    Carrier owner's manual OM-HUMCRBP-01 (B2207853A, © 2018 CAC/BDP), linked as a document from the carrier.com page for this model, PDF p3: 'It should be changed annually with the exception of the Water Saver humidifier which should be replaced at least twice per heating season'