UPDATED NOVEMBER 6, 2026

Bambu Lab H3C AMS 3H: Sealed 24-Color Setup

Last updated: November 6, 2026 · AMS 3H in the Combo CONFIRMED · 24 colors CONFIRMED · 85°C drying CONFIRMED

The H3C Combo does not ship with an AMS 2.0. It ships with the AMS 3H, a fully sealed and moisture-proof unit. Chain up to four of them and you get 24 colors. The printer itself also dries filament, up to 85°C. This page covers what is confirmed and what Bambu has not said yet.

Confirmed AMS 3H Specs

Spec	Official value	Status
Bundled with Combo	Yes — the $2,499 Combo includes AMS 3H	CONFIRMED
Sealing	Fully sealed, moisture-proof	CONFIRMED
Max units per printer	4 AMS 3H daisy-chained	CONFIRMED
Max colors / materials	24	CONFIRMED
Built-in drying	Dual drying slots, max 85°C	CONFIRMED
Spools per AMS 3H unit	Not stated separately in the H3C listing	UNKNOWN

Note on "24 colors": Bambu publishes 24 as the total for four AMS 3H units. We deliberately do not print a "spools per unit" figure, because doing the division ourselves would be an assumption dressed up as a fact.

Why Sealing Matters More Than Slot Count

Most multi-color setups solve color count and ignore humidity. The H3C flips that. Materials that actually benefit from a sealed AMS:

PA-CF — carbon-fiber nylon absorbs moisture fast; wet nylon pops and stringers
PVA — soluble support material is highly hygroscopic
TPU 75A / 90A — soft TPU is sensitive to moisture and feeds poorly when damp
PC — needs dry conditions for consistent layer adhesion

With a sealed unit plus 85°C drying inside the printer, you can leave engineering filament loaded between jobs instead of bagging it with desiccant every time.

AMS 3H vs AMS 2.0

Bambu's existing AMS 2.0 holds 4 spools per unit and is not fully sealed. The AMS 3H changes the total math on the H3C: four units reach 24 colors, versus 16 with four AMS 2.0 units.

	AMS 2.0 (X1 / P1)	AMS 3H (H3C)
Fully sealed	No	Yes CONFIRMED
Max units	4	4
Max colors	16 (4 spools × 4 units)	24 CONFIRMED
Built-in drying	Printer-dependent	85°C dual slots CONFIRMED

What Is Still Unknown

Spool capacity per individual AMS 3H unit
Whether AMS 3H works on X1 / P1 / H2 series, or is H3C-only
Whether all four units can be dried simultaneously, or drying is limited to two slots
Internal humidity target and whether it is actively controlled or passive sealing

These are marked UNKNOWN on purpose. When Bambu publishes them, they move up into the confirmed table.

FAQ

Does the H3C Combo include an AMS?

Yes. The $2,499 Combo bundles the AMS 3H, which is fully sealed and moisture-proof.

How many colors can the H3C print?

Up to 24 colors or materials. Bambu lists up to 4 AMS 3H units daisy-chained to one H3C, with a 24-color total.

Does the H3C dry filament inside the printer?

Yes. The H3C has built-in dual drying slots with a maximum temperature of 85°C, so hygroscopic materials can be dried without a separate dryer.

Why does a sealed AMS matter for PA-CF and PVA?

Nylon and PVA absorb moisture quickly, and wet filament prints badly. A sealed, moisture-proof AMS keeps spools dry between jobs instead of relying on storage bags.

How many spools does one AMS 3H hold?

Bambu publishes the 24-color total for 4 units but does not separately state the per-unit spool count on the H3C listing, so we mark it unknown rather than guess.

Related Guides

H3C spec tracker — every official spec labeled confirmed / unknown
Swaptek 9-tool system — how the 6-second swap works
TPU 75A / 90A on 2.85 mm FlexFeed — soft-material printing
H3C filament guide — 2.85 mm + 1.75 mm, materials
H3C price — $2,499 Combo and what is included

Sources
[1] Bambu Lab official H3C product page and launch blog (Nov 3, 2026) — bambulab.com/en-us/h3c
[2] Bambu Lab official H3C store listing: AMS 3H, sealed and moisture-proof, up to 4 units, 24 colors, 85°C drying.