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Nabertherm HO Series Rectangular Toploading Kilns with AC590 Controller

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£4,404.00

All Prices Include VAT

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Free UK mainland delivery  •  2-week delivery when in stock

Nabertherm HO Series Rectangular Top-Loading Kilns

A rectangular top-loading kiln range (70–100 litres) with freely-radiating heating elements — the chamber kiln’s uniformity with the loading convenience of a top loader. Available in 3 variants.

  • Rectangular chamber: Fits wider flat work than any round top loader of equivalent volume.
  • Freely radiating elements: Better heat distribution — closer to chamber-kiln uniformity.
  • 70L (HO70/L, HO70/R) or 100L (H100): Three variants to choose from.
  • AC590 touch controller: Wi-Fi-enabled with MyNabertherm app.
  • Adjustable ventilation: Speeds cooling and improves firing quality.
Made in GermanyRectangular chamberFree UK mainland delivery
AC590 controller
RCF-free insulation
Free UK delivery
From £4,404 Rectangular top loader

Three variants: HO70/L (1-phase), HO70/R (3-phase) and H100 (3-phase).

Free UK mainland delivery. 2-week lead time when in stock.

The rectangular top loader

The HO series is an interesting middle-ground kiln — the loading convenience of a top loader with the freely-radiating heating element layout of a chamber kiln. That combination gives you noticeably better temperature uniformity than a round top loader in the same capacity bracket.

The rectangular chamber is the real reason to choose one of these: round top loaders waste space around wide or awkward work. The HO70 is 440 × 380mm internally, the H100 is 430 × 480mm — both take pieces a standard round chamber simply can't.

Specified for studios that want top-loading access for large flat work, decorative tiles, sculptural pieces that don't fit neatly in a circular footprint. Three variants so you can match your electrical supply.

The three variants

  • HO70/L — 70L, 3.6 kW, 1-phase
  • HO70/R — 70L, 5.5 kW, 3-phase
  • H100 — 100L, 8.0 kW, 3-phase
  • All fire to 1,200°C or 1,320°C (model-dependent)
  • AC590 touch controller on all variants
  • Free UK mainland delivery on all variants

Why the HO shape matters

Rectangular inner chamber

Fits wider, flatter or non-circular pieces that waste space in a round chamber. Better shelf stacking efficiency too.

Freely-radiating elements

Element layout more like a chamber kiln than a standard top loader — temperature uniformity across the chamber is noticeably better.

Adjustable ventilation + castors

Controllable cooling rate for delicate work. Castors let you reposition the kiln in a busy studio.

A niche but useful form factor — the only way to get rectangular chamber geometry with top-loading convenience at this scale.

Technical specifications

ModelsHO70/L, HO70/R, H100
Capacity70 L or 100 L
Inner dimensions440 × 380 × 420 mm (HO70) or 430 × 480 × 490 mm (H100)
Outer dimensions (W × D × H)Footprint approx 720 × 920 mm; height varies by model
Weight145–160 kg
Max temperature1,200°C or 1,320°C
Power3.6, 5.5 or 8.0 kW
Electrical1-phase (HO70/L) or 3-phase
ControllerNabertherm AC590 touch
OriginMade in Germany

Ready to fire?

Not sure if this is the right kiln for your space, your electrics, or the work you want to fire? We answer every enquiry personally — most of the time we can help you choose in under five minutes.

Call us on 01206 648025 or email support@kilncrafts.co.uk. We'd love to hear what you're planning to make.