How to Calculate the Total Cost of Ownership of a Concrete Dust Extractor

When contractors and rental companies compare concrete dust extractors, the first number they look at is the price tag. It is easy to compare, but it tells you very little about what the machine will actually cost over its working life. A lower-priced extractor that clogs often, burns through filters and stops production every hour can cost far more than a higher-priced machine that keeps running.

Total cost of ownership (TCO) gives you the full picture. This guide explains what to include, how to calculate it, and what to ask suppliers so you can compare machines fairly.

The Basic TCO Formula

TCO is the total of everything you spend on a machine over the period you plan to use it, minus what you can recover when you sell it:

TCO = Purchase price + Operating costs + Maintenance and parts + Downtime and labor + Compliance costs − Resale value

Choose a fixed period for the comparison, such as three or five years, and use the same period for every machine you evaluate. Then estimate each cost category below.

1. Purchase Price

Start with the upfront cost, but check what it actually includes. Two machines at similar prices may not be equivalent if one comes with a complete tool kit and the other does not.

Ask whether the price covers:

• The hose and the wand
• Floor tools
• A continuous bagging system or starter bags
• Spare filters
• Warranty and delivery

Anything missing is a cost you will pay later, so add it to the purchase line.

2. Energy Costs

A dust extractor with a powerful motor draws significant electricity during long grinding shifts. Energy cost depends on motor power, the hours you run per year and your local electricity rate.

A simple estimate is:

Annual energy cost = Power (kW) × Operating hours per year × Electricity rate

Efficiency matters here too. A machine that keeps suction strong without running at full load all the time can cost less to operate than one that struggles with a clogged filter and works harder to move the same air.

3. Consumables

Consumables are the most predictable running cost, and one of the easiest to underestimate. For a concrete dust extractor they include:

• Dust collection bags, replaced as they fill
• Pre-filters, which take the first load of dust
• HEPA filters, which are the highest-value consumable
• Hoses and hose connectors, which wear from dragging and bending
• Floor tools, which wear down on abrasive concrete

Estimate how many of each you will use per year, multiply by the unit price, and add them up. Remember that concrete dust is extremely fine. A machine with weak pre-filtration or poor filter cleaning will load its HEPA filters faster, which raises this number quickly.

Also check that genuine consumables are easy to buy. If a part is hard to source, you pay for it in downtime. Bersi lists its hoses, filters, connectors and other items on its Parts and Accessories page.

4. Filter Cleaning, Labor and Downtime

This is the category buyers most often overlook, and often the largest one.

Concrete grinding produces dust that clogs filters quickly. When suction drops, the operator has two options:

• Manual cleaning. The operator stops grinding and purges or cleans the filter by hand. Each stop is lost production time and paid labor.
• Automatic cleaning. The machine cleans its own filters while it keeps working, so grinding does not stop.

To measure the difference, estimate:

Annual downtime cost = Stops per day × Minutes per stop × Working days × Labor and equipment cost per minute

Even short stops add up. A few minutes lost several times a day across a full working year can exceed the price difference between two machines. Bersi’s auto pulsing dust extractors are designed to clean the filters during operation so the operator can keep working, which cuts this cost directly.

Do not forget the labor of changing bags. A continuous bagging system makes bag changes faster and cleaner than handling loose dust.

5. Maintenance and Wear Parts

Every machine needs routine service, and some parts wear out no matter how well the machine is built. Typical items include:

• Wheels, which take abuse on rough floors and stairs
• Switches, which are used constantly in dusty conditions
• Motors, the most valuable component, which wear with long running hours

For each, estimate how often it will need replacing and what the part and the labor cost. Ask the supplier how long the motors are designed to run and whether replacements are easy to get. A machine you can repair in your own workshop is cheaper to own than one that must go back to the factory.

6. Compliance and Certification

For concrete work, health and safety rules are part of the cost picture. Silica dust is hazardous, and many jobsites now require certified equipment.

A machine with Class H certification and certified HEPA 13 filters helps you meet these requirements and bid for projects that demand them. A machine without certification may be cheaper to buy, but it can close the door on jobs or create liability risks. The cost of losing work is a real part of TCO, even if it does not appear on an invoice.

Bersi’s Class H certified dust extractors include the TS1000, TS2000, TS3000, AC150H, AC22 and AC32. The H13 filters for these machines, plus the AC800 and AC900, are HEPA 13 certified.

7. Resale Value and Service Life

At the end of your comparison period, a well-built machine still has value. Robust construction, available spare parts and a recognized brand all help keep resale prices up. Subtract your estimated resale value from the total.

Service life also matters. A machine that lasts seven years costs less per year than one that needs replacing after four, even if the price is higher.

TCO Cost Categories at a Glance

A Worked Example

The figures below are hypothetical and only illustrate the method. Replace them with your own quotes and usage.

Imagine two machines compared over five years. Machine A has a lower purchase price and manual filter cleaning. Machine B costs more upfront and cleans its filters automatically.

Five-year totals are calculated as the purchase price plus five times the yearly costs. For Machine A: $3,000 + 5 × ($600 + $900 + $2,000 + $500) = $23,000. For Machine B: $4,500 + 5 × ($600 + $800 + $200 + $300) = $14,000.

The machine that looked cheaper costs $9,000 more over five years. The purchase price is only about 13% of Machine A’s total cost, which shows why the sticker price is a poor guide.

Questions to Ask Before You Buy

Use these questions to collect the data you need for your own calculation:

• What exactly is included in the price?
• How are the filters cleaned, and does grinding have to stop?
• How often will filters, bags and hoses need replacing?
• Are genuine consumables and wear parts in stock, and at what lead time?
• Is the machine Class H certified, and are the HEPA filters certified as well?
• How long are the motors expected to run, and can they be replaced easily?
• What warranty and service support are offered?

Bersi and Total Cost of Ownership

At Bersi, we design our dust extractors to keep running costs low as well as performance high. Features such as automatic filter cleaning, continuous bagging systems, certified filtration and a full range of genuine consumables and wear parts are all aimed at reducing downtime and simplifying maintenance. Explore the Bersi dust extractor range to compare machines for your application.

Conclusion

The cheapest concrete dust extractor to buy is rarely the cheapest to own. By adding up energy, consumables, downtime, maintenance, compliance and resale value, you can compare machines on the same basis and choose the one that costs least over its working life.

Contact Bersi to discuss your application and find the dust extractor that gives you the lowest total cost of ownership.