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Panasonic NN-CS89LB 4-in-1 Combination Steam Oven

A research-selected option for premium all-in-one countertop cooking, with particular strengths in steam, convection, grill and microwave modes and large flatbed cooking space. Buyers should also consider large and expensive before choosing it.

By MainBuyer Editorial Team Reviewed 2026-07-14 Model NN-CS89LB 3 GB retailers listed
MainBuyer verdict

Is it worth considering?

A strong shortlist candidate for premium all-in-one countertop cooking where steam, convection, grill and microwave modes matters more than large and expensive.

Best forPremium all-in-one countertop cooking

Reasons to buy

  • Steam, convection, grill and microwave modes
  • Large flatbed cooking space
  • Useful automatic programmes

Reasons to think twice

  • Large and expensive
  • Many functions require familiarisation
Review status

Research in progress

A research-selected option for premium all-in-one countertop cooking, with particular strengths in steam, convection, grill and microwave modes and large flatbed cooking space. Buyers should also consider large and expensive before choosing it.

Evidence and sources

What this assessment is based on

This is a research-based assessment. MainBuyer does not claim hands-on or laboratory testing unless a page explicitly says that testing took place.
  • Official manufacturer specifications and model identifiers.
  • Retailer information used to confirm availability and product positioning.
  • Established independent review coverage and recurring ownership considerations.
  • MainBuyer editorial judgement about suitability, limitations and value.
Editorial standards

How MainBuyer separates price from judgement

Commission rates do not determine our verdict, page order or lowest checked-price claim. See how we review products, our editorial policy and corrections policy.

Price evidence: view timestamped MainBuyer price observations for Panasonic NN-CS89LB 4-in-1 Combination Steam Oven.

Ownership evidence: see verified recurring costs and 1, 3 and 5 year calculations.

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