In fast-paced kitchens, speed and consistency are everything – and that’s where a commercial microwave becomes indispensable. Whether it’s reheating, defrosting, or finishing off plated meals, the right microwave helps keep service moving smoothly.

But not all commercial microwaves are created equal. From light-duty to heavy-duty models, and from manual to programmable controls, choosing the right machine depends on your kitchen’s volume and workflow.

At Alexanders Direct, we’ve supplied commercial microwaves to restaurants, cafés, and catering operations across the UK. In this guide, we highlight our top-performing models for 2025 and break down what to look for before you buy.

Top Commercial Microwaves for 2025


Sharp R21AT Medium Duty Commercial Microwave, 1000W

  • Power Output: 1000W
  • Capacity: 28 Litres
  • Dimensions: W520 x D406 x H309 mm
  • Features: 11 power levels, touch controls with 20 presets, durable stainless steel construction
  • Best for: Medium-duty use in cafés and small restaurants

Sharp R24AT Heavy Duty Commercial Microwave, 1900W

  • Power Output: 1900W
  • Capacity: 20 Litres
  • Dimensions: W510 x D335 x H470 mm
  • Features: 20 programme presets, dual emission twin stirrers for even cooking
  • Best for: High-demand kitchens requiring rapid heating

Menumaster RFS518TS Large Capacity Microwave, 1800W

  • Power Output: 1800W
  • Capacity: 34 Litres
  • Dimensions: W551 x D413 x H365 mm
  • Features: Touch panel control, stackable design, suitable for high-volume operations
  • Best for: Large-scale catering environments

Menumaster DEC18E2 Heavy Duty Programmable Microwave, 1800W

  • Power Output: 1800W
  • Capacity: 17 Litres
  • Dimensions: W419 x D578 x H343 mm
  • Features: Touch panel control, stackable, designed for heavy-duty use
  • Best for: Busy kitchens needing reliable, programmable microwaves

Buffalo FB863 Manual Commercial Microwave Oven, 1800W

  • Power Output: 1800W
  • Capacity: 34 Litres
  • Dimensions: W528 x D574 x H368 mm
  • Features: Manual controls, stainless steel construction, easy to clean
  • Best for: Kitchens preferring manual operation with high capacity

What to Look for in a Commercial Microwave (2025 Buying Guide)


  • 1. Power Output (Watts)
    Power determines speed. Light-duty units start at 1000W, while heavy-duty machines reach up to 1900W. Choose higher wattage for fast-paced kitchens or bulk heating.

  • 2. Capacity and Internal Size
    Internal space varies from around 17L to 34L. Consider the size of dishes, containers, or plated meals you’ll be reheating or cooking.

  • 3. Usage Rating – Light, Medium or Heavy Duty
    Match the microwave’s duty rating to your usage. Light-duty models suit occasional use, while heavy-duty machines are designed for frequent, high-volume reheating.

  • 4. Control Type – Manual vs Programmable
    Manual controls offer simplicity and reliability. Programmable models save time and ensure consistency with presets for frequently used dishes.

  • 5. Construction and Durability
    Look for stainless steel interiors and exteriors – they’re easier to clean and stand up to daily commercial use. Reinforced hinges and handles also extend lifespan.

  • 6. Stackability and Space Efficiency
    In compact kitchens, stackable microwaves help save worktop space while doubling output. Always check the manufacturer’s guidelines on stacking safely.

  • 7. Service Access and UK Support
    Choose models with good support and available spares in the UK. This reduces downtime and helps you maintain compliance with minimal disruption.

Quick Buyer Checklist


FeatureRecommendedWhy It Matters
Power Output 1000W–1900W Yes Ensures fast cooking and reheating, suitable for busy service times
Capacity 20L+ Yes Allows for reheating larger dishes or multiple portions
Heavy-Duty Rating (if high usage) Yes Built to withstand repeated use in commercial environments
Programmable Controls Optional Saves time and improves consistency with preset cooking cycles
Stackable Design Yes (if space is limited) Helps maximise workspace without sacrificing performance
Stainless Steel Interior Yes Easy to clean and more hygienic for commercial use
UK Parts & Support Yes Ensures quick repairs and peace of mind with ongoing service

Frequently Asked Questions


What power rating do I need for a commercial microwave?

For occasional use, a 1000W microwave will suffice. For busy kitchens with frequent reheating, look for units with 1800W–1900W power output to ensure speed and consistency.

What’s the difference between light, medium and heavy-duty microwaves?

Light-duty models are suitable for up to 50 uses per day, medium-duty for 100–150, and heavy-duty models are built to withstand 200+ uses per day in busy commercial settings.

Are commercial microwaves stackable?

Yes – many models are designed for safe stacking, especially programmable ones like those from Menumaster. Always follow the manufacturer’s instructions to ensure ventilation and stability.

Can I use a domestic microwave in a commercial kitchen?

No – domestic models aren’t built for the demands of commercial use and may breach food hygiene regulations. They also lack the speed and reliability of professional models.

Do commercial microwaves have turntables?

Most do not. Instead, they use stirrers or rotating antennas for even heat distribution, which are better suited for larger dishes and higher volumes.

Need Help Choosing the Right Commercial Microwave?


Whether you’re upgrading a busy kitchen or setting up a new foodservice business, our team can help you choose the best microwave for your daily needs.

From quick defrosting to high-speed heating, we’ll guide you to the right model for your menu, service speed, and available space.

Need Help Choosing the Right Equipment?


Get expert advice and make confident choices with our full range of Commercial Catering Equipment Buying Guides . Discover tips, comparisons, and top recommendations – all in one place.

Live Chat | Call Us | Send a Message