The Philips Sonicare 1100 Series takes the Philips Sonicare C2 Plaque Control Brush Heads (HX9024/14) as its brush head; replace it every 3 months; Australian sellers list it from A$11.49 each as of 5 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your electric toothbrush
Philips Sonicare 1100 Series
Electric toothbrush
Confirmed against Philips Sonicare's listConfirmed against Philips Sonicare's own compatibility list
Not yours? ChangeSave it · remind me every 3 months
Takes the HX9024/14 brush head
C2 Plaque Control Brush Heads (HX9024/14) · replace every 3 months · check the code on your old part before ordering.
HX3641 comes with a C2 Optimal Plaque Defence head; the 2026 HX3901 comes with an InterCare head (HX9002).
Your electric toothbrush
Electric toothbrush
Confirmed against Philips Sonicare's listConfirmed against Philips Sonicare's own compatibility list
Takes the HX9024/14
Brush head · every 3 months · check the code on your old part.
HX3641 comes with a C2 Optimal Plaque Defence head; the 2026 HX3901 comes with an InterCare head (HX9002).
Other Philips Sonicare electric toothbrushes that take the HX9024/14
GenuineGenuine Philips Sonicare
$11.49 each
4-pack $45.96
Amazon AU · 5 OctLowest genuine · Amazon AU · checked 5 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Philips Sonicare. Compatible: another brand.Genuine is made by Philips Sonicare. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $11.49 each · 4-pack $45.96
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Genuine Philips Sonicare
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Not due yet?
Get a nudge when your brush head is due — it's every 3 months. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the brush head in your Philips Sonicare 1100 Series
Watch the guide or follow the steps.
- 1Pull the old brush head straight off the handle's metal shaft.
- 2Line the front of the new head up with the front of the handle and push it on until it clicks.
- 3Change heads every 3 months; BrushSync handles light up their replacement reminder when a smart head is due.
Every number this part goes by
- Retail name:
- C2 Optimal Plaque Defence
- Retail name:
- C2 Plaque Control
- Retail name:
- HX9022
- Retail name:
- HX9022/28
- Retail name:
- HX9024
- Retail name:
- HX9024/14
- Retail name:
- HX9028
- Retail name:
- HX9028/14
- Replaces:
- C2 Optimal Plaque Defense
- Replaces:
- HX9023
- Replaces:
- HX9023/67
Sellers list any of these; they are the same part.
About your Philips Sonicare 1100 Series
Philips Sonicare electric toothbrush — 1100 Series. Its brush head is the C2 Plaque Control Brush Heads (HX9024/14), part HX9024/14, changed every 3 months.
Other brush heads that fit this electric toothbrush:
- Philips Sonicare S2 Sensitive Brush Heads (HX6052/14) (every 3 months), Philips Sonicare W2 Optimal White Brush Heads (HX6062/14) (every 3 months), Philips Sonicare W2 Optimal White Brush Heads, 4-pack (HX6064/14) (every 3 months), Philips Sonicare I InterCare Brush Heads, 2-pack (HX9002/14) (every 3 months), Philips Sonicare C3 Premium Plaque Brush Heads (HX9042/14) (every 3 months), Philips Sonicare G3 Premium Gum Brush Heads (HX9052/14) (every 3 months), Philips Sonicare A3 All-in-one Brush Heads (HX9092/14) (every 3 months), Philips Sonicare A3 All-in-one Brush Heads, 4-pack (HX9094/14) (every 3 months). Every Philips Sonicare click-on brush head fits every click-on handle; Philips lists them all for this range, so pick the head by what you want it to do.
- Philips Sonicare W DiamondClean Brush Heads, 8-pack (HX6068/82) (every 3 months), Philips Sonicare G2 Optimal Gum Care 3 x (formerly ProResults gum health) (HX9033/67) (every 3 months), Philips Sonicare W3 Premium White Brush Heads, 2-pack (HX9062/67) (every 3 months). Philips says every Sonicare brush head fits every Sonicare handle. This head is older than this handle, so Philips does not list the pair by name.
Where the model number is: The range name (DiamondClean 9000, ProtectiveClean 4300, 2100 Series) is on the box and in the app; the HX type number (HX9911) is printed in small type on the underside of the handle.
Fits these 26 Philips Sonicare models
Philips Sonicare26 models
- 1100 Series
- 2 Series gum health
- 2 Series plaque control
- 2 Series plaque defense
- 3 Series gum health
- 3100 Series
- 4100 Series
- 5 Series gum health
- Advanced Clean
- DiamondClean
- DiamondClean Smart
- EasyClean
- Essence+
- FlexCare
- FlexCare Platinum
- FlexCare Platinum Connected
- FlexCare+
- HealthyWhite
- HealthyWhite+
- PowerUp
- ProtectiveClean
- Series 5300
- Series 5500
- Series 6100
- Series 6500
- Sonicare for Kids
1100 Series. HX3641 comes with a C2 Optimal Plaque Defence head; the 2026 HX3901 comes with an InterCare head (HX9002).
The other 25 models. Every Philips Sonicare click-on brush head fits every click-on handle; Philips lists them all for this range, so pick the head by what you want it to do.
Common questions
- Which brush head fits the Philips Sonicare 1100 Series?
- The Philips Sonicare 1100 Series takes the Philips Sonicare C2 Plaque Control Brush Heads (HX9024/14). HX3641 comes with a C2 Optimal Plaque Defence head; the 2026 HX3901 comes with an InterCare head (HX9002).
- How often should I replace the brush head in my Philips Sonicare 1100 Series?
- Every 3 months, or sooner if it looks worn.
- Where can I buy the HX9024/14 in Australia?
- We track 3 Australian sellers for the HX9024/14; the lowest listed price when we last checked was A$11.49 at Amazon AU. Prices are re-checked daily and dated on this page.
- How do I fit the HX9024/14 in a Philips Sonicare 1100 Series?
- No tools, a few minutes: 3 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- Splayed bristles clean less and can hurt gums; the indicator bristles fade to show it is due.
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