Harmsco Water Filters Explained: Which Model Is Right for Your Application?

When you need reliable water filtration, you can always turn to the products offered by Harmsco. Their filtration solutions support a wide range of uses, including potable water and storm water management, and of course, swimming pools. Harmsco water filters are especially known for delivering impressive water clarity while maintaining durability and performance, making them a good choice for your pool.

With several pool filter options available, choosing the right model can feel overwhelming. Where do you start? Here’s how to narrow down your choices:

Decide how fine your filtration needs to be

Micron ratings tell you how small a particle your filter can remove. A lower micron rating (like 1 or 5) captures finer contaminants such as sediment, rust, or even some bacteria, but it can also restrict flow and require more frequent replacements. Higher ratings (like 20 or 50 microns) allow more water to pass through with less resistance, making them better for coarse filtration or pre-filter stages. Choosing the right rating depends on your water quality and how clean it needs to be for downstream equipment or end use. Don’t overspend on ultra-fine filtration you don’t need—you will just be spending more money without improving results.

Know what’s contaminating your pool

Contaminants vary in terms of structure — some are fibrous, some are rigid, and some are gelatinous. Each type responds differently to filtration media, so keep that in mind when choosing Harmsco water filters.

For instance, screen-style filtration may struggle with gel-like materials, which can deform or pass through under pressure. By matching the filter media to the contaminant type, you don’t have to worry about filtration efficiency and performance issues.

Look beyond purchase price and review operating costs

Factor in labor and disposal requirements, as well as how often you need to replace the filter.

For example, a single HC/170 Series Hurricane® cartridge replaces the equivalent of 43 standard 9¾-inch pleated cartridges. While Hurricane® cartridges cost more initially, they often reduce labor, disposal volume, and replacement cycles — lowering overall operating expenses.

Make sure materials fit your environment

Make sure you’re using filter housings that can withstand the chemical and mechanical demands of your system. The best housing materials should meet your operating pressure limits and temperature ranges, as well as any state or federal regulatory requirements tied to your application.

Size the filter housing correctly

When sizing Harmsco water filters, it helps to look at several variables like the flow rate and acceptable pressure drop. This will help you determine how many cartridges and how much surface area you need.

As a best practice, oversize the housing by 25% to 30%. This extra capacity supports future expansion and helps maintain consistent efficiency over time.

Get Harmsco pool filters from a trusted source

All Pool Filters 4 Less offers a broad selection of Harmsco products and Unicel replacement cartridges to simplify your search. For personalized guidance, email [email protected] and get help selecting Harmsco water filters that fit your exact needs.

About All Pool Filters 4 Less

All Pool Filters 4 Less is an online retailer providing affordable, high-quality pool filtration products and replacement cartridges for residential pool owners. Focused on value, performance, and customer support, the company helps do-it-yourself pool owners maintain clean, healthy water without premium-priced OEM parts.