Most F&B operators only start thinking seriously about their dishwasher when the dishwashing area starts to fall behind during peak hours: dirty plates and cups stacking up during busy service, staff rushing to keep up, or an existing machine that can no longer handle the kitchen’s daily workload.
Choosing the right commercial dishwasher is not about buying the biggest or most advanced machine available. The right choice depends on how well the dishwasher matches your kitchen's actual operations, including your:
- Daily dishwashing volume
- Peak-hour demand
- Available space
- Staffing needs
- Operating costs
For restaurants, cafés, hotels, caterers and other commercial kitchens in Malaysia, choosing the correct dishwasher can make a noticeable difference to kitchen workflow, labour efficiency and overall operating costs.
In this article, we look at the practical factors to consider when choosing a commercial dishwasher that best suits your kitchen, including machine type, washing capacity, kitchen space, utility requirements and long-term running costs. Once you understand what your kitchen actually needs, you can then compare suitable machines and choose a supplier you can rely on.
Understanding the Different Types of Commercial Dishwashers
Commercial dishwashers generally fall into three main categories, with each designed to suit a different kitchen workflow, washing volume and space requirement.
Under-Counter Dishwashers
- Compact machines designed to fit beneath a counter or within a smaller dishwashing area.
- Well suited for cafés, bars and smaller restaurants where kitchen space is limited but a proper commercial wash cycle is still needed for glasses, cutlery and plates.
- Because of their compact size, they generally handle lower washing volumes per hour than larger commercial dishwasher types.
Hood Type Dishwashers
- Also known as pass-through dishwashers and designed for kitchens with a steadier and higher volume of tableware.
- Staff load dirty dishes into a rack, lower the hood to begin the wash cycle, then move the cleaned rack to the clean side once the cycle is complete.
- This setup creates a more efficient and continuous dishwashing workflow and is commonly used in restaurants, hotels, cafeterias and catering operations.
Rack Conveyor Dishwashers
- Designed for high-volume, continuous dishwashing.
- Staff load tableware into racks, which are then automatically carried through the washing and rinsing sections of the machine.
- Allows multiple racks to be processed continuously rather than running a separate cycle for each rack.
- Typically used in hotels, central kitchens, large canteens and institutional kitchens that need to process large quantities of tableware during peak periods.
There is no single "best" type of commercial dishwasher. The right choice depends on your kitchen's dishwashing volume, available space and how quickly tableware needs to move through the wash area during service.
How to Estimate the Right Size and Capacity for Your Kitchen
Choosing the right commercial dishwasher capacity comes down to matching the machine's output to your actual dishwashing volume, rather than simply choosing the largest option available.
An undersized dishwasher may struggle to keep up during peak hours and require staff to run cycles almost continuously, while an oversized machine can take up unnecessary kitchen space and may result in higher operating costs than your current workload requires.
Number of Seats and Peak Service Period Matters
A practical starting point is your number of covers or seats and your busiest service period. Estimate how many plates, bowls, glasses and utensils each guest typically generates, then calculate the volume that needs to be washed during your peak hours, rather than using your average volume across the entire day.
For example, a café with steady but modest foot traffic will have very different peak-hour requirements from a restaurant serving a full house during dinner service or a banquet operation handling large events.
Factor In the Type of Tableware You Use
The type of tableware you use also affects the capacity you need. Kitchens washing mostly standard plates and cutlery will have different rack requirements from those handling large quantities of glassware, trays, pots or bulky serving dishes. Since these items fit differently into dishwasher racks, the number of racks you need to process per hour can vary considerably.
Measure the Space Available in Your Kitchen
Available kitchen space is the other half of the equation. Measure the footprint required for the dishwasher itself, as well as the surrounding space needed for loading and unloading racks, staff movement, drainage and any inlet or outlet tables.
A high-capacity dishwasher that does not fit comfortably within your wash area, or creates another bottleneck in the kitchen workflow, defeats the purpose of upgrading in the first place.
If you expect to increase seating capacity, extend operating hours or handle a higher volume of customers in the next few years, choosing a dishwasher with some additional capacity can help accommodate future growth without requiring another replacement too soon. However, this should still be balanced against the space, utility requirements and running costs of a larger machine.
What Affects the Running Cost of a Commercial Dishwasher
The purchase price of a commercial dishwasher is only part of what it will cost over its working life. Electricity use, water consumption, detergent and rinse aid, maintenance and labour all contribute to the ongoing cost of operating the machine, and they are worth considering before you commit to a particular model.
Electricity and water costs can add up quickly in a commercial kitchen running multiple wash cycles throughout the day. Different dishwasher models vary in the power required for washing, rinsing and heating, as well as how much water they use per cycle or rack. A machine with lower energy and water consumption may therefore cost less to operate over time, particularly in a high-volume kitchen.
Energy Consumption Comparison
| EHS Commercial Dishwasher | Standard Commercial Dishwasher | |
|---|---|---|
| Power usage | 6.5 kW | 9.3 kW |
Compared to a standard commercial dishwasher, EHS Commercial Dishwasher uses lesser power, with an average of 2.8 kW energy saved.
Assuming:
- Daily usage: 8 hours/day
- Operating days: 30 days/month
- Commercial electricity rate (estimate): RM0.323/kWh
The estimated monthly electricity cost saved will be:
- Daily saved consumption: 2.8 kw x 8 hours = 22.4 kWh
- Monthly saved consumption: 22.4 kWh x 30 = 672 kWh
- Monthly electricity cost saved: 672 kWh x RM0.323 = RM217.06 (excluding other costs)
For businesses in Peninsular Malaysia, electricity costs also depend on the applicable TNB tariff. Since July 2025, the tariff structure includes separate components such as energy, capacity and network charges rather than relying on a single electricity rate. Because tariffs and applicable charges may change, it is best to check the current TNB tariff structure when estimating your operating costs.
Detergent and rinse aid are another recurring expense. Usage depends on factors such as the number of wash cycles, water conditions and chemical dosing settings. A dishwasher with automatic detergent and rinse aid dosing can help control usage while maintaining consistent washing and rinsing results.
Labour should also be considered when comparing running costs. A commercial dishwasher that matches your kitchen's volume and workflow can reduce the amount of time staff spend washing manually, re-racking dishes or waiting for a machine that cannot keep up during peak service.
The easier it is to move dirty tableware through washing and back into service, the more efficiently staff can use their time elsewhere in the kitchen.
Maintenance and servicing are another long-term cost to factor in. Like any piece of commercial kitchen equipment, a dishwasher requires regular cleaning and maintenance, and components may eventually need to be serviced or replaced. Availability of spare parts and local technical support can therefore affect the true cost of owning the machine over several years.
This is where energy and water efficiency become a genuine cost consideration rather than simply a product feature. A more efficient dishwasher may carry a higher upfront price, but lower water, electricity or chemical consumption can reduce its operating costs over time.
How Long Should a Commercial Dishwasher Last?
The lifespan of a commercial dishwasher varies depending on the machine type, usage and maintenance. A well-maintained machine can remain in service for many years, while one operating continuously in a high-volume kitchen may experience wear much sooner.
Several factors affect how long a commercial dishwasher lasts:
- Usage intensity: A machine running only a few hours a day will generally experience less wear than one operating continuously through multiple service periods.
- Water quality: Hard water can cause limescale buildup on heating elements and internal components, increasing wear over time.
- Maintenance frequency: Regular cleaning of filters, spray arms and tanks, together with scheduled servicing, can help prevent minor issues from developing into major repairs.
- Build quality: The materials, components and construction of the machine also affect its long-term durability.
An older dishwasher does not necessarily need to be replaced simply because of its age. However, if breakdowns become more frequent, repair costs continue to increase or the machine can no longer keep up with your kitchen's requirements, replacement may become the more practical option.
Expected lifespan is also worth considering when deciding whether to buy or rent a commercial dishwasher. Purchasing may suit businesses that expect to use the machine for many years, while rental can reduce the upfront investment and may include servicing or maintenance depending on the supplier and rental package.
Making the Right Choice for Your Kitchen
Choosing the right commercial dishwasher means matching the machine to your kitchen's actual needs. Consider the dishwasher type, peak-hour washing volume, available space, running costs and expected lifespan rather than choosing based on price or capacity alone.
Once you have a clearer idea of what your kitchen requires, the next step is finding a supplier that can support the machine over the long term. For Malaysian F&B businesses, EHS Kitchen is the authorised distributor of ECOLCO commercial dishwashers, offering under-counter, hood type and rack conveyor models for different kitchen sizes and washing volumes.
EHS also offers a commercial dishwasher rental programme for businesses that prefer to reduce the upfront cost of acquiring a machine.
Whether you are equipping a new kitchen or replacing an existing dishwasher, taking the time to assess your operational needs first will make it easier to choose a machine that fits your kitchen and supports your day-to-day workflow.
Frequently Asked Questions
What type of commercial dishwasher is best for a restaurant?
The best type depends on the restaurant's dishwashing volume, available space and peak-hour demand.
Smaller restaurants and cafés may be suited to an under-counter dishwasher, while busier restaurants often benefit from a hood type or pass-through dishwasher. Large kitchens processing a continuous volume of tableware may require a rack conveyor dishwasher.
How do I know what size commercial dishwasher I need?
Start by looking at how much tableware your kitchen needs to wash during its busiest period rather than across the entire day. Consider the number of covers served, the types of plates, glasses and utensils used, the number of racks that need to be washed per hour and the physical space available in your dishwashing area.
Is a bigger commercial dishwasher always better?
No. A larger dishwasher is only useful if your kitchen needs the additional capacity. An oversized machine may take up unnecessary space and could have higher operating requirements, while an undersized machine may struggle to keep up during peak service. The aim is to choose a machine that closely matches your kitchen's actual workload.
What should I consider when comparing commercial dishwasher costs?
Do not compare purchase price alone. Consider electricity and water consumption, detergent and rinse aid usage, labour requirements, servicing, spare parts and long-term maintenance. These factors contribute to the total cost of operating the dishwasher over its working life.
How often should a commercial dishwasher be maintained?
Daily cleaning should normally include areas such as filters, tanks and spray arms, while scheduled servicing depends on the machine, usage level and manufacturer's recommendations.
High-volume kitchens may require more frequent maintenance because the dishwasher operates for longer periods and completes more wash cycles.
What affects the running cost of a commercial dishwasher?
Running costs are shaped by water and electricity consumption, detergent and rinse aid usage, maintenance and servicing, and labour. More water- and energy-efficient machines typically cost more upfront but can reduce operating costs over time.
How long should a commercial dishwasher last?
Lifespan varies by machine type, usage intensity and maintenance, but a well-maintained commercial dishwasher can remain in service for many years. Machines used continuously in high-volume kitchens tend to experience wear sooner than those used for shorter periods.
Should I repair or replace an ageing commercial dishwasher?
An older machine doesn't automatically need replacing. However, if breakdowns become more frequent, repair costs keep rising, or the machine can no longer keep up with your kitchen's volume, replacement is usually the more practical option.
Should I buy or rent a commercial dishwasher?
Buying may suit businesses that want to own the equipment and expect to use it for many years. Renting can be suitable for businesses that prefer a lower upfront investment or want servicing and maintenance support included as part of the package.
The better option depends on your cash flow, expected usage and the terms offered by the supplier.
Where can I get help choosing the right commercial dishwasher in Malaysia?
EHS Kitchen, the authorised distributor of ECOLCO commercial dishwashers in Malaysia, can assess your kitchen's requirements and recommend a suitable under-counter, hood type or rack conveyor dishwasher.