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FlexiFit HC431 Full Face CPAP Mask with Headgear

BY Fisher & Paykel  |  Item #HC431A
(588) Read Reviews
$88.00
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HC431 Mask and Headgear - Original Version (Mannequin Not Included)
HC431 Mask and Headgear - Original Version (Mannequin Not Included)
Front View of the HC431 Mask with Headgear - Original Version
HC431 Headgear Strap Attaching to Headgear Clip - Newer Version
HC431 Headgear Strap Attaching to Headgear Clip - Original Version
Inside View of the HC431 Mask and Glider Strap - Original Version
Product image for FlexiFit HC431 Full Face CPAP Mask with Headgear - Thumbnail Image #6
Profile View of the HC431 Mask with Headgear - Original Version
Introduction to HC431 Full Face CPAP Mask
Cleaning your Fisher & Paykel Mask
How to Clean and Maintain your CPAP Equipment
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HC431 Mask and Headgear - Original Version (Mannequin Not Included) Front View of the HC431 Mask with Headgear - Original Version HC431 Headgear Strap Attaching to Headgear Clip - Newer Version HC431 Headgear Strap Attaching to Headgear Clip - Original Version Inside View of the HC431 Mask and Glider Strap - Original Version Product Thumbnail Image #6 Profile View of the HC431 Mask with Headgear - Original Version
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HC431 Mask and Headgear - Original Version (Mannequin Not Included) Front View of the HC431 Mask with Headgear - Original Version HC431 Headgear Strap Attaching to Headgear Clip - Newer Version HC431 Headgear Strap Attaching to Headgear Clip - Original Version Inside View of the HC431 Mask and Glider Strap - Original Version Product Image for FlexiFit HC431 Full Face CPAP Mask with Headgear - Thumbnail Image #6 Profile View of the HC431 Mask with Headgear - Original Version
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FlexiFit HC431 Full Face

The FlexiFit HC431 Full Face CPAP Mask with Headgear by Fisher & Paykel Healthcare is designed for comfort and stability. Covering both the nose and mouth, this full-face mask features an advanced air diffuser, a crown strap, and an under-chin fit that ensures proper seal even with jaw movement.

FlexiFit HC431 Full Face

The FlexiFit HC431 Full Face CPAP Mask with Headgear by Fisher & Paykel Healthcare is designed for comfort and stability. Covering both the nose and mouth, this full-face mask features an advanced air diffuser, a crown strap, and an under-chin fit that ensures proper seal even with jaw movement.

The FlexiFit HC431 Full Face is Right for You!

Product Highlight Included Parts Placeholder

What's included*

  • Mask
  • Headgear

* Does not include select added accessories

Product Highlight Suitable Shopper Types Placeholder

Ideal for

  • Mouth Breathing

Learn More About Your New Mask

FlexiFit 431 Full Face Mask Features and Benefits:

  • Highly Contoured Silicone Seal
  • Advanced Air Diffuser
  • Easy Release Strap
  • Unique Under Chin Fit

The Flexifit 431 is Ideal For:

  • Active Sleepers
  • Side Sleepers
  • Stomach Sleepers
  • If You Breathe Through Your Mouth or Nose

Maintain the Mask’s Seal Even As You Change Sleeping Positions

Active sleepers don’t have to compromise comfort or risk disturbing the seal-which is latex-free and made with frosted texture silicone-with FlexiFit cushion technology, which easily contours to your face’s surface. Plus, the glider strap helps maintain equal pressure and ensures your head can shift side-to-side without causing mask leaks while providing extra stability.

Advanced Air Diffuser Helps You and Your Partner Sleep Peacefully

Designed to vent exhaled air, the air diffuser works to avoid blowing air directly onto your partner, plus the tiny directional holes help disperse the sound of exhaled air for a quieter therapy experience.

Quickly Unbuckle Your Mask With Ease If You Need a 3 A.M. Restroom Break

Remove your mask in a single step with the easy-release crown strap, making any middle-of-the-night restroom break almost hassle-free.

Unique Under Chin Design Provides Secure Seal

While most full-face CPAP masks seal under the bottom lip, the FlexiFit 431 goes the extra mile with coverage to ensure a more effective mask seal with auto contouring properties for maximum comfort. This design removes the need for a chin strap while still allowing for jaw movement and oral delivery, or can function as a nasal mask as the gentle pressure of the under chin design can easily hold your mouth shut during sleep apnea therapy if necessary.

What’s Included:

  • Mask
  • Headgear

Compatibility:

HC432 and HC431 Compatibility

HC431 silicone cushions made after April 2006 will fit the HC432 frame.

HC431 silicone cushions made before April 2006 will not fit the HC432 frame.

If you are switching from the HC431 to the Flexifit™ HC432 mask, the sizes run a little smaller on the HC432.

The manufacturer has stamped the part number (431 or 432) identifying the mask on the upright bar for the forehead support. The manufacturer did not include the alpha characters "HC" in front of the numeric characters.

Mask Type: Full Face

Headgear / Frame Sizes:

  • One Size Fits Most

Suggested Replacement Schedule:

The silicone full-face cushion should be replaced once every six months.

Cleaning Instructions: Yes

Headgear Included: Yes

Replaceable Cushion: Yes

Cushion Type: Silicone

Includes Multiple Cushion Sizes: Yes

Good For:

  • Mouth Breathing

Sleep Position:

  • Back

Breathing Preference: Combo

Product Warnings:

WARNING

  • Do not use Polyvinyl Chloride pressure and oxygen tubing. Use silicone oxygen tubing instead.

CPAP.com always offers these services

  • 24 hour access to our CPAPtalk.com Support Forum
  • Learning Center for information on sleep apnea and cpap equipment
  • Consumer Purchasing Trends Reports
  • Warranty Services for all items purchased through CPAP.com
  • Insurance Compliant Invoices
  • Free Prescription Request System

The silicone full-face cushion should be replaced once every six months.

Cleaning Your Mask

  1. To clean the mask, you'll need to slowly remove the cushion from the mask frame, and wash with warm water and mild soap.
  2. You'll need to hand wash some of the other components on the mask by using a bristle brush, such as a soft-bristle toothbrush.
  3. Wash the headgear with lukewarm soapy water. When you've cleaned the headgear completely, you'll want to rinse thoroughly to make sure the soap suds are removed.
  4. Set all components aside to air dry, but do not put them in direct sunlight.

Sizing Guide: According to the manufacturer the HC431 uses the same sizing guide as the HC432. When opening the sizing guide on this product page, only the HC432 is listed on the guide, but rest assured it is the sizing guide intended for both the HC431 and HC432.

Where do I find the size?

The mask frame does not have an identifiable size because it offers a universal fit to each of the HC431 full-face cushions.

To find the size of the cushion, turn the mask to look at the flat bottom of the full-face cushion. Large embossed letters spell out the words "S M A L L," "M E D I U M," or "L A R G E." The words are found near the rim connecting the mask frame to the full face cushion.

Which CPAP masks work on which machines?

Any mask will work with any machine, with one important exception. The ResMed AirMini is only compatible with certain ResMed CPAP masks. Compatible masks for the AirMini are as follows:

  • ResMed AirFit™ N20 Nasal Mask
  • ResMed AirFit™ F20 Full Face
  • ResMed AirTouch™ F20 Full Face
  • ResMed AirFit™ P10 Nasal Pillow

When considering another CPAP, APAP or BiPAP machine from ResMed or any other manufacturer, mask compatibility extends to all brands. The AirMini uses non-standard tubing to connect the machine to the mask, and is the primary reason why other masks won't work with the AirMini. Despite this issue, many of our customers consider the AirMini to be an excellent machine.

What are the CPAP, BiPAP, Sleep Apnea, and Oxygen related HCPCS, CPT or billing codes?

E1399 is Miscellaneous and is used for other CPAP and Oxygen items.
Do you have a guide to help me choose the right mask?
Yes, we created a Help Me Choose guide to help you select the right mask or machine according to your preferences. The guide asks you a series of questions regarding your preferences and your facial features. Based on your answers we provide you with a comparison chart of the masks that meet your criteria. Get started here:

Help Me Choose - Mask
How often should I replace my mask?
Medicare allows for mask cushion replacement every three (3) months, and a complete mask system replacement every six (6) months. CPAP manufacturers and vendors suggest these replacement schedules as well.

In our experience, most mask cushions begin to deteriorate after about six months of use. The cushion eventually becomes too soft to hold a seal. The headgear straps lose elasticity and must be tightened more and more to get the same quality seal.

We strongly suggest replacing cushions and pillows as soon as they start to soften. Air leaks may reduce the effectiveness of CPAP therapy and headgear that is too tight may cause facial sores at pressure points. In most cases, replacement headgear is available if it is stretched out or the Velcro worn out.

To see what parts of your mask are replaceable refer to our Replacement Part Finder. Just search for your mask to see all of the replaceable parts.
Why do I wake up with dry eyes?
Air leaking from the mask at the bridge of the nose and over the eyes during sleep will cause the eyes to dry out. The most common reason for air leaking at the nose bridge is that the mask is too big or too long for the nose.

We would suggest you resize your mask to be sure you have the best fit. A mask that has an adjustment at the bridge may also be helpful in getting a good fit. Nasal pillow or nose cushion devices which do not rest on the nose are also an option.

It is not advisable to tighten the headgear to eliminate the air leak. Pressure from a mask that is too tight will cause bruises and even open sores if applied long enough.

Here are some suggested items that may help reduce mask leaks:

Silent Night Full Face Mask Liners
LiquiCell Nasal CPAP Cushions
RemZzzs Padded Full Face CPAP Mask Liners
+ See More
How do I care for my mask?

Masks should be washed daily with warm water and gentle soap or baby shampoo. Let the mask air dry. Never use antibacterial soap as it will break down the silicone of the mask cushion. Avoid soaps that include lotion which can coat the mask and cause it to lose its seal. A safe cleaner is the Control III Disinfectant CPAP Cleaning Solution. Remember, going to bed with a clean face will improve your seal and protect the lifespan of your mask. Citrus Mask Wipes

The best time to clean your mask is in the morning after use. This removes the oils left behind from your skin which can reduce the lifespan of your mask. We recommend using Mask Wipes to make daily morning cleaning easy. The mask wipes are made from materials that will not break down your mask.

Citrus Mask Wipes


For customers who want to completely disinfect their mask and accessories, there's an even better option than wipes. The Lumin Mask and Accessories Cleaner uses powerful UV light to disinfect, killing almost all bacteria almost instantly. It's not a cleaner and doesn't scrub or wash anything, but for simple disinfecting the Lumin works great!




Here are some other cleaning products to help with keeping your mask fresh:


Citrus II CPAP Mask Spray Cleaner

Control III Disinfectant CPAP Cleaning Solution - Home Care Kit

Hurricane CPAP Equipment Dryer

Unscented CPAP Mask Wipes

Lumin CPAP Mask and Accessories Cleaner

What does a mask prescription need to say?
A mask prescription must contain all of the following information:
  • One of the following words or phrases: "CPAP Mask", "CPAP Supplies", "CPAP Humidifier", "CPAP", "Continuous Positive Airway Pressure", "APAP", "AutoPAP", "AutoSet", "Auto CPAP", "Auto Adjusting CPAP", "Self Adjusting CPAP", "BiPAP", "BiLevel", "VPAP", "BiPAP Auto", "BiPAP ST", "Synchrony ST", "VPAP ST"
  • Your physician's contact information
  • Your physician's signature
  • The patient's full name

Here are some of our top selling masks:

DreamWear Nasal CPAP Mask with Headgear - Fit Pack
ComfortGel Blue Full Face CPAP Mask with Headgear
AirFit™ P10 Nasal Pillow CPAP Mask with Headgear
+ See More
Are prescriptions required for mask, machine, humidifier, and EPAP purchases?

Yes. Federal law requires we have a valid prescription on file before we ship your mask, machine, humidifier, or EPAP therapy, including Provent and Bongo RX. You will also need a prescription to purchase the Nightbalance POSA device.


We provide many easy ways to get your prescription:

  • We can request your prescription for you! When you checkout, just let us know you would like us to request your prescription, or you can log into your account to have us request your prescription.
  • Fax your prescription to our toll-free fax number: 866.353.2727, or our international fax number: 713.541.7377
  • Email your prescription to cpap@cpap.com
  • Upload your prescription in your account, under the Prescriptions Section
  • Ask your doctor to fill out our prescription form. We have both a standard prescription form and an EPAP prescription form.


For more information on prescriptions, please see our Prescription Section of the Learning Center.


Why might I need a full face mask?
If your mouth drops open during sleep, a full face may be selected to allow for the CPAP airflow to be delivered through both the nose and mouth.

Some CPAP users move to using a full face mask after finding that using a nasal mask along with a chinstrap does not meet their sleep therapy needs. Some CPAP users use a full face mask when suffering from seasonal allergies.

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"Super helpful, fast shipping, friendly assistance, great selection, I love this company."

- Verified Customer, 10/25/22

★★★★★

(588)  

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Customer Reviews

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★★★★★
4.3 588 Reviews
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★★★★★

not enough nose adjustment.

Verified purchase | Sep. 05, 2023 | Pat M.
the top strap can not pull the mask tight enough to the nose to stop it from leaking.
Was this helpful?
(1)
(0)
★★★★★

poorly designed clips

Verified purchase | Feb. 04, 2023 | Verified CPAP.com Customer
impossible to hook mask, clips only from one side and God forbid you try to put back on in middle of the night ...what were they thinking?
Was this helpful?
(1)
(0)
★★★★★

poorly designed clips

Verified purchase | Feb. 04, 2023 | Verified CPAP.com Customer
impossible to hook mask, clips only from one side and God forbid you try to put back on in middle of the night ...what were they thinking?
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(1)
(0)
★★★★★

It's a good mask!!!

Verified purchase | Apr. 09, 2021 | Verified CPAP.com Customer
This is a very good mask. Takes a bit to get used to taking it off but other than that it's a good fit. I love that you receive three different size seals instead of just one hoping you have the right size. Overall a very good mask.
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(1)
(0)
★★★★★

Great service at Reasonable price

Verified purchase | Sep. 22, 2020 | Verified CPAP.com Customer
I have been getting my supplies here for some time. The supplies always arrive quickly and I have saved a lot.
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(0)
(0)
★★★★★

HC 431

Verified purchase | Jun. 28, 2020 | Verified CPAP.com Customer
Best mask for me, only 1.5 sleep interruptions according to my last 30. Been using this mask for 12 years now.
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