P1S Chamber Heater Review: Is a Heated Chamber Upgrade Worth It for the Bambu Lab P1S? (Real-World Results, Cost, and What to Watch For)

If you print mostly PLA or PETG on a Bambu Lab P1S, the stock setup is usually enough. But once you move into engineering materials like PA (nylon), ABS, PC, or carbon-fiber reinforced filaments, a stable chamber temperature can become the difference between consistent success and repeated failures.

In this P1S Chamber Heater review, the goal is to explain when a P1S Chamber Heater upgrade is practical for real-world printing, and when it is not.

A popular upgrade path is adding an active heated chamber module. The question most owners ask is simple: is it worth the cost?

If you want to see the upgrade tested end-to-end, here is a full review from a creator who walks through the installation, warm-up behavior, and real print results. I’m including it as a reference so you can evaluate the results visually.

What to watch for in the video:

• How quickly the chamber temperature stabilizes
• Print behavior changes with warp-prone materials (PA/nylon, ABS, PC)
• Installation steps and safety considerations

This article breaks down:

• What a heated chamber changes in real prints
• When it matters most
• What it does not solve
• Installation and safety considerations
• How to decide whether the upgrade is right for your printing goals

A heated chamber upgrade is most worth it if you regularly print warp-prone materials (PA, ABS, PC, CF/GF blends) and you want higher success rates on larger parts. It is less valuable if your workload is mostly PLA and PETG, or if you rarely print large, flat, high-warp parts.

The P1S is enclosed, which helps. But in most stock configurations, the chamber temperature rises mainly from the heated bed and internal heat.

In practice, that means:

• Chamber temperature is often “passively warm,” not actively controlled
• The chamber may hover around the mid 30s to 40°C range depending on room temperature and print settings

That can be fine for PLA and PETG. For nylon and other higher-warp materials, it can be limiting.

An active chamber heating system adds a controlled heating module and airflow path to bring the enclosure to a set temperature faster and hold it more consistently.

In real-world use, owners typically report benefits such as:

• Faster warm-up to a stable chamber temperature
• More consistent results when printing warp-prone materials
• Better reliability on larger parts that would otherwise lift or crack

For CF-reinforced nylon, a warmer and stable chamber can reduce warping and improve layer bonding consistency. That said, nylon also brings other requirements:

• Proper drying
• Suitable build surface and adhesion strategy
• Correct cooling and enclosure airflow management

A heated chamber helps, but it is not a magic fix.

Most active chamber heater kits require:

• Opening the machine panels
• Routing power and control connections
• Mounting a heater and ducting module

The specifics vary by kit and printer version. If you are not comfortable working inside an enclosed printer, it is safer to follow the manufacturer’s official installation video or have an experienced user help.

Any enclosure heater increases internal temperatures. That can affect:

• Printed part cooling behavior
• Electronics and long-term component wear
• Filament behavior in the enclosure

Results and safety depend on many factors such as firmware version, material, installation quality, and ambient environment. Always monitor initial prints after installing a heated chamber system.

Use this checklist:

• Your prints are mostly PLA and PETG
• You print small parts that rarely warp
• You want a plug-and-play upgrade with zero installation work

If you decide a P1S chamber heater upgrade fits your needs, Call3D focuses on Bambu Lab-only aftermarket upgrades and ships globally by air.