Why are the prices of high-efficiency filters so different?

For HEPA of the same specification, the price quoted by two companies is quite different. This situation is very common in the procurement process. The difference does not necessarily mean which company is quoting randomly. It is more likely that the two quotes correspond to different things.

Before comparing prices, first align the technical conditions and delivery scope, otherwise the numbers themselves are not comparable.

First unify comparable specifications

It is a prerequisite for price comparison to write down the outer frame size, thickness, rated air volume, efficiency level and applicable standards on the same inquiry form.

If HEPAs with the same name have different rated air volumes or different test standards corresponding to efficiency levels, the unit prices cannot be directly compared. The type of filter material will also bring about price differences: glass fiber and PTFE have different cost structures and different applicable working conditions. The specific selection needs to be confirmed based on the project requirements. Please refer to HEPA/ULPA air filters . Product information for

Structural form also affects price. There are different structures such as partitions, no partitions, and V-shaped, and the materials and processes are different. If two quotes use different structures, price differences are normal even if the grade and size are the same.

Check the implied deliverables

The numbers on the quotation often only correspond to the product itself. Whether the following are included needs to be confirmed item by item:

Sealing gasket or liquid tank structure : Some quotations are based on the bare filter element, and the seals are additional.

Test report format : Provide information by batch and issue reports numbered one by one. The workload is different. If the project requires traceability one by one, the price difference will be reflected here.

Special packaging : Large-size products or liquid tank sealed products have higher requirements for transportation packaging.

Non-standard molds and samples : Customized structures may involve mold opening or sample production. Whether this part of the cost is listed separately varies from company to company.

On-site services : Whether installation guidance and on-site leak detection are included will also affect the total price.

List these clearly, and then compare the prices, you can see where the difference lies.

Quantity and delivery time also affect the price

The order quantity is directly related to the scale effect of production and purchasing.

The unit cost for small batches and multi-specification orders is usually higher than large batches of a single specification. For orders with tight delivery deadlines, production schedules may need to be adjusted, which will also be reflected in the quotation.

The drawing confirmation process and sample verification rounds of customized products also affect the final cost. How many rounds of samples will be made and how many times the drawings will be revised may not be completely determined at the inquiry stage, but the handling of changes can be agreed upon in the contract.

Factor operating costs into your options

The purchase price is only a portion of the total cost.

The resistance is related to the actual working point of the fan, and the operating energy consumption changes with the resistance. The service life is affected by inlet dust and maintenance conditions, the frequency of replacement is different, and the long-term cost is also different. For matching In the FFU fan filter unit system, the filter element resistance will also affect the air volume output of the unit, thereby affecting the control strategy and energy consumption.

Projects can compare product performance, later replacement and shutdown arrangements under the same design conditions before deciding on purchasing plans. Looking at the purchase price, operating costs and maintenance costs together is closer to the actual situation than just comparing the unit price. For device-side applications such as For EFU equipment-side fan filter units , replacement often involves equipment downtime, and maintenance costs may be weighted higher.

About Aili Industrial’s inquiry cooperation

Aili Industrial can provide complete size, efficiency, air volume, resistance and interface information. HEPA/ULPA air filter and equipment matching solutions. filter with FFU fan filter unit、The fan filter unit at the EFU equipment end is matched in the same manufacturing system, and the interface parameters and testing requirements can be confirmed at the planning stage.

The clearer the inquiry conditions, the clearer the corresponding range of quotations, and the easier it will be for subsequent sample and batch acceptance. The specific price shall be subject to the formal quotation and contract agreement.