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- Configuration & install support we spec the controller, options and safety package to your process
- US-based service & spares Carbolite Gero calibration, parts and support handled locally
Furnances, Clean Room Ovens
Carbolite Gero CR Clean Room Oven – Up to 250°C | 30–1810 L
Clean room oven to 250 °C in nine sizes from 30 to 1,810 L — fully sealed low-shedding insulation, enclosed brushless fan and a particle-free door seal keep the load clean, with an optional inert-atmosphere package and through-wall designs.
- ✓ 250 °C clean heating — low-shedding insulation, enclosed brushless fan, particle-free seal
- ✓ Nine sizes, 30–1810 L — bench chamber to floor-standing
- ✓ Inert-atmosphere, through-wall flange and over-temperature options
- ✓ Configured to order — lead time on request; install & support included
Price held 7 days after order.
Install + training included
Tailored service plan
What your process engineer actually checks
What your process engineer actually checks
Clean heating that won't contaminate the load
Fully sealed low-thermal-mass insulation avoids shedding fibres, a fully enclosed brushless fan motor keeps the airstream clean, and a particle-free silicone seal contains the chamber. The polished interior wipes down fast between runs — clean heating from 30 to 1,810 L.
An applications engineer on the line
Questions on cleanliness class, inert-atmosphere operation or which size fits your load? Our engineers run heat treatment in-house at AO Metal. Sub-4h reply, NDA standard.
250°C
Max temperature
30 – 1810 L
Chamber volumes
Particle-free
Clean design
301
Controller
About this product
The Carbolite Gero CR is a range of clean room ovens with a 250°C maximum operating temperature, in nine standard chamber sizes from 30 to 1,810 litres. Everything about the CR is designed to keep particulates out of the load: fully sealed low-thermal-mass insulation that will not shed fibres, a fully enclosed brushless fan motor, a particle-free silicone rubber door seal and a polished, easily cleaned interior. A 301 controller with single ramp to setpoint and process timer runs the cycle, and an optional inert-atmosphere package, through-wall (flange-fitted) designs and stacking frames tailor the oven to contamination-sensitive drying, curing and heat-treatment work.
Why engineers choose the CR
Clean, low-shedding heating for contamination-sensitive parts — figures below are from the Carbolite Gero datasheet.
Low-shedding clean design
Fully sealed low-thermal-mass insulation avoids shedding fibres, an enclosed brushless fan motor keeps the airstream clean, and a particle-free silicone seal contains the chamber.
Nine sizes, 30–1810 L
From a 30 L bench chamber to an 1,810 L floor-standing unit — one clean-room design scales from single samples to production batches.
Easily cleaned, sealed interior
Polished stainless-steel interior and smooth exterior wipe down fast between runs, and a membrane control panel with a bright LED display keeps controls flush and cleanable.
Inert atmosphere & bespoke options
Optional inert-atmosphere operation, through-wall flange-fitted designs, over-temperature protection, viewing window and lockable door adapt the CR to your facility.
How Additive Plus delivers it
Configured to order, installed and supported by engineers who run heat treatment in-house.
Step 01
Configure to your process
Pick chamber size (30–1810 L), controller and options — inert atmosphere, over-temperature protection, through-wall flange, viewing window or floor stand.
Step 02
Install & support
US-based delivery and setup, operator guidance, and Carbolite Gero spares and service handled locally.
Step 03
Dial in your cycle
We help set clean drying, curing or annealing temperatures and times for the contamination-sensitive parts you process.
Chamber volumes
| Model | Max temp | Chamber volume |
|---|---|---|
| CR/30 | 250°C | 30 L |
| CR/70 | 250°C | 68 L |
| CR/130 | 250°C | 121 L |
| CR/180 | 250°C | 170 L |
| CR/220 | 250°C | 227 L |
| CR/330 | 250°C | 340 L |
| CR/450 | 250°C | 450 L |
| CR/840 | 250°C | 850 L |
| CR/1790 | 250°C | 1810 L |
Full per-model dimensions, shelf loading, heat-up times and power ratings are in the Specifications tab.
Typical applications
Where a clean room oven earns its place in a controlled-environment workflow.
Electronics & semiconductor
Bake-out and cure in a low-particulate chamber
Medical device processing
Clean drying and cure of contamination-sensitive parts
Aerospace composites
Clean cure and post-cure of prepreg and bonded parts
AM feedstock conditioning
Clean drying of powders and filaments
Contamination-sensitive heat work
Drying and annealing where cleanliness matters
Not sure the CR is the right oven?
If you need more temperature, a controlled inert atmosphere or general lab heating, a sibling Carbolite Gero oven may fit better.
Need 400–600°C, cleanHTCR Clean Room OvenView oven →
Need inert atmosphereHTMA Atmosphere OvenView oven →
General lab heatingPF Laboratory OvenView oven →
Need inert atmosphereHTMA Atmosphere OvenView oven →
General lab heatingPF Laboratory OvenView oven →
Tell us your cleanliness class, part type and target temperature — and whether you need an inert atmosphere — and our applications engineer will confirm the right CR size and options. Configurations are priced per specification.
Why source through Additive Plus
- AM & clean-process expertise — clean drying, curing and annealing schedules for contamination-sensitive parts, not just oven delivery.
- In-house heat treatment at AO Metal — we run post-processing daily and can advise on cycles for your parts.
- US-based support and consumables — Carbolite Gero service, spares and calibration handled locally.
- Sub-24h engineer response — on every enquiry, with leasing and financing available.
| Brand | Carbolite Gero |
| Models | CR/30, CR/70, CR/130, CR/180, CR/220, CR/330, CR/450, CR/840, CR/1790 |
| Max temperature | 250°C |
| Chamber volumes | 30 – 1810 L |
| Temp uniformity | ±3.0°C |
| Controller | 301 (ramp to setpoint + timer) |
| Clean features | Sealed low-shedding insulation · enclosed brushless fan · particle-free silicone seal |
| Key options | Inert atmosphere · through-wall flange · over-temperature protection |
Don't see your size or temperature?
Carbolite Gero ovens are configured to order across dozens of chamber sizes, temperature grades and controller options — including AMS2750F (Nadcap) and clean-room builds. Tell us your process and we'll spec the right one.
Other products teams run alongside Carbolite Gero CR Clean Room Oven – Up to 250°C | 30–1810 L
Furnances
Carbolite Gero HTMA Controlled Atmosphere Oven – Up to 700°C | 28–1000 L
Controlled atmosphere oven for metal AM post-processing and materials research — 400–700°C max (4 grades), 28–1,000 L chambers (5 sizes), O₂ down to 50 ppm with N₂/Ar purge. Seam-welded gas-tight chamber built as an atmosphere unit from the ground up.
- ✓ O₂ down to 50 ppm — atmosphere-controlled heat treatment without vacuum-furnace cost
- ✓ 17 configurations in one family — 28 L lab to 1,000 L production, same gas architecture
- ✓ Seam-welded gas-tight chamber — purpose-built, not a retort-converted standard oven
- ✓ Configured to order — request lead time; install, training & cycle validation included
On backorder
· Configured to order — request lead time
Furnances
Carbolite Gero LGP Large General Purpose Industrial Oven – Up to 700°C | 500–13,820 L
Large-format industrial oven with the range's widest choice of size and temperature — 500 to 13,820 L in four grades (250, 425, 625 and 700 °C). Heavy-duty impellers, a 430-grade stainless interior, single/double doors and a 3216CC controller with over-temperature protection, plus AMS2750F (Nadcap)-ready builds.
- ✓ 500 to 13,820 L — the largest ovens in the range, single or double door
- ✓ Four temperature grades — 250, 425, 625 and 700 °C
- ✓ AMS2750F (Nadcap) builds, explosion relief and motorised doors available
- ✓ Configured to order — lead time on request; install & training included
On backorder
· Lead time: configured to order — request current lead time. Large-format install and training included.
Furnances
Carbolite Gero AX Laboratory Oven – Fan Convection Up to 250°C | 28–128 L
Bench-top fan-convection laboratory oven — 250 °C max across three sizes (28, 66, 128 L), ±5 °C uniformity at 250 °C and a ~23-minute heat-up, with a chemically resistant stainless-steel chamber and R38 digital PID control.
- ✓ 250 °C fan-convection heating — ±5 °C uniformity, 23–26 min heat-up, 3 min recovery
- ✓ Three bench sizes — 28, 66 and 128 L, stackable to save space
- ✓ Chemically resistant stainless-steel liner — built to BS EN 61010-2-010
- ✓ Configured to order — lead time on request; install & support included
On backorder
· Lead time: configured to order — request current lead time. Install and support included.
Furnances
Carbolite Gero HTCR High-Temperature Clean Room Oven – 400–600°C | 28–1000 L
High-temperature clean room oven combining low-shedding clean-room construction with 400, 500 or 600 °C in five sizes from 28 to 1,000 L — enclosed brushless fan, particle-free seal, safe-touch double skin and standard over-temperature protection, with an ISO 14644 Class 5 option.
- ✓ Clean-room build at 400–600 °C — low-shedding insulation, enclosed brushless fan
- ✓ Five sizes, 28–1000 L — sixteen standard models
- ✓ ISO 14644 Class 5 option · over-temperature protection standard
- ✓ Configured to order — lead time on request; install & support included
On backorder
· Lead time: configured to order — request current lead time. Install and support included.
Furnances
Carbolite Gero GP General Purpose Industrial Oven – Up to 300°C | 220–450 L
General-purpose industrial oven to 300 °C in three sizes (220, 330, 450 L) with a choice of vertical (A) or horizontal (B) airflow, a 430-grade stainless-steel case and robust production-duty construction — with AMS2750F (Nadcap)-ready builds available.
- ✓ 300 °C production-grade oven — ±5 °C uniformity, vertical or horizontal airflow
- ✓ Three sizes — 220, 330 and 450 L
- ✓ AMS2750F (Nadcap)-compliant builds available for aerospace heat treatment
- ✓ Configured to order — lead time on request; install & support included
On backorder
· Lead time: configured to order — request current lead time. Install and support included.
Furnances
Carbolite Gero HT High-Temperature Industrial Oven – 400–700°C | 28–350 L
High-temperature industrial oven in four grades — 400, 500, 600 and 700 °C — and four chamber sizes from 28 to 350 L. Robust construction, a stainless-steel liner and perforated shelves handle ageing, tempering, stress relief and high-temperature curing in air.
- ✓ Four temperature grades — 400, 500, 600 and 700 °C
- ✓ Four chamber sizes — 28, 95, 220 and 350 L
- ✓ Robust build — stainless-steel liner, perforated shelves, door switch
- ✓ Configured to order — lead time on request; install & support included
On backorder
· Lead time: configured to order — request current lead time. Install and support included.
Furnances
Carbolite Gero TLD Rapid Cooling Oven – 400°C | Thermoluminescent Dosimeter Annealing
Rapid-cooling oven for annealing thermoluminescent dosimeters (TLDs) — 400 °C in a compact 3 L chamber with a CC-T1 programmable controller that automatically activates a cooling blower for defined, repeatable cool-down and reproducible dosimeter readings.
- ✓ Automatic rapid cooling — CC-T1 controller triggers the cooling blower on a set schedule
- ✓ 400 °C, compact 3 L chamber — sized for TLD chips and small samples
- ✓ Horizontal forced-air circulation — even heating and cooling
- ✓ Configured to order — lead time on request; install & support included
On backorder
· Lead time: configured to order — request current lead time. Install and support included.
Accessories APSX
Dryer Oven
General purpose oven for heating the plastic pellets up to 437° F.
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In stock
From teams running Carbolite Gero ovens
Unedited feedback from labs and production floors.
★★★★★
Temperature uniformity held within spec across the whole chamber — our heat-treat sign-off stopped being a fight.
DR
Daniel R. Process Engineer · Aerospace
★★★★★
Configured to order meant the exact controller and over-temperature setup we needed, and install was handled end to end.
PS
Priya S. Lab Manager · Materials R&D
★★★★★
Drying our feedstock before printing noticeably cut porosity. Simple, repeatable, reliable.
MT
Marcus T. AM Production Lead · Medical devices
Common questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
What makes the CR a clean room oven?
The Carbolite Gero CR is built to keep particulates out of the load. It uses fully sealed low-thermal-mass insulation that will not shed fibres, a fully enclosed brushless fan motor, a particle-free silicone rubber door seal and a polished, easily cleaned stainless-steel interior. A smooth exterior and membrane control panel keep surfaces wipe-clean. These features make it suitable for contamination-sensitive drying, curing and heat treatment in controlled environments.
What temperature and chamber sizes does the CR offer?
The CR reaches 250°C and comes in nine standard sizes from 30 to 1,810 litres: CR/30, CR/70, CR/130, CR/180, CR/220, CR/330, CR/450, CR/840 and CR/1790. Temperature uniformity is around ±3°C. Smaller units are bench or cabinet scale; the largest are floor-standing. Our applications engineer will help match the chamber size to your parts and batch volume.
Can the CR run under an inert atmosphere?
An inert-atmosphere option is available on the CR, specified at time of order, for work that must avoid oxidation or air exposure. If your process needs tighter oxygen control or higher temperatures, the Carbolite Gero HTMA controlled-atmosphere oven reaches oxygen levels down to 50 ppm and up to 700°C. Additive Plus will help you decide whether an inert CR or a dedicated atmosphere oven is the better fit.
What controller does the CR use?
The CR ships with the Carbolite Gero 301 controller, which provides a single ramp to setpoint and a process timer, operated from a membrane panel with a bright LED display. For programmed multi-segment ramps, soaks, data logging and digital communications, a range of upgraded controllers and programmers can be specified at time of order. We will help match the controller to your process.
Can the CR be built into a cleanroom wall?
Yes. Through-wall (flange-fitted) designs are available so the CR can be mounted in a cleanroom partition, loading from one side and venting or servicing from the other. Fully customised bespoke designs are also offered. Additional options include over-temperature protection, an access port for an independent thermocouple, cable entry ports, viewing window, lockable door and stacking frame. Tell us your facility layout and we will configure it.
Is the CR suitable for drying 3D printing feedstock in a clean environment?
Yes. The CR is a good fit where feedstock drying or part conditioning must happen without introducing particulates — for example in medical, aerospace or electronics AM workflows. The low-shedding chamber and clean airstream avoid contaminating powders, filaments or finished parts. At up to 250°C it also handles clean curing and low-temperature annealing. We can recommend cycles for your specific material and cleanliness requirement.
What is the lead time and does Additive Plus install it?
The CR is configured to order, so lead time depends on the size and options chosen — request a current quote and we will confirm it. Additive Plus handles US-based delivery and setup, provides operator guidance, and coordinates Carbolite Gero spares, service and calibration locally. Because we run heat treatment in-house at AO Metal, we can advise on clean drying and curing cycles for your parts before the oven ships.
Place your order, or talk to an engineer first
Order Carbolite Gero CR Clean Room Oven – Up to 250°C | 30–1810 L direct, or talk to materials engineer