Views: 0 Author: Cindy Publish Time: 2026-09-27 Origin: Site
When a cooling tower starts losing cooling performance, most people check the fan, motor, pump, water flow, or spray nozzles first.
But there is another component that deserves just as much attention: cooling tower fill.
Inside a wet cooling tower, the fill creates the working surface where water and air interact. It spreads water, increases contact area, and helps evaporation remove heat from the circulating water.
Among the different types of cooling tower fill available today, PVC cooling tower fills remain widely used for HVAC, industrial process cooling, power generation, manufacturing, and many replacement projects.
But which supplier should you choose?
That is where things become interesting.
A low-priced fill may look attractive on a quotation, but the real question is whether its material, geometry, dimensions, water-quality tolerance, and thermal characteristics are suitable for your tower.
In this guide, we introduce five PVC cooling tower fill suppliers and manufacturers, starting with Power Tower Cooling Technology (Shaoxing) Co.,Ltd, followed by Brentwood Industries, SPX Cooling Technologies/Marley, Baltimore Aircoil Company (BAC), and EVAPCO.
This is an editorial supplier comparison rather than an official global market-share ranking.
PVC cooling tower fill is a structured heat-transfer medium installed inside a wet cooling tower.
PVC stands for polyvinyl chloride. Manufacturers can thermoform PVC sheets into different corrugated, cross-fluted, vertical-fluted, herringbone, or other structured patterns.
Why create all those shapes?
Because a flat sheet would not provide enough effective water-air contact.
The structured surface encourages hot water to spread into thin films while allowing air to pass through the channels.
Think of cooling tower fill as a highway system for heat transfer.
Water travels across the surfaces while air moves through the passages. The better the design, the more effectively the two streams interact without creating excessive pressure drop or clogging.
The result is improved heat and mass transfer inside the tower.
A cooling tower can have an excellent fan and a powerful pump, but those components cannot compensate forever for poorly performing fill.
The fill directly affects how effectively water is distributed and exposed to air.
When hot water reaches the fill section, it spreads across the structured surfaces. Air moves through the fill, either across the water flow in a crossflow tower or generally upward against the water flow in a counterflow tower.
As this happens, heat transfers from the water to the air.
A small portion of the water also evaporates. That evaporation carries additional heat away from the circulating water.
This is why fill selection can influence:
Cooling capacity
Cold-water temperature
Air pressure drop
Water distribution
Tower footprint
Fouling behavior
Maintenance requirements
Replacement cost
SPX describes PVC fill as a central part of the cooling tower heat-transfer system, with fill sheets spreading process water into thin films to increase exposure to airflow.
PVC film fill works by creating a large effective surface area inside a relatively compact volume.
Hot water is distributed over the top of the fill. Instead of simply falling downward in large streams, the structured sheets encourage the water to spread over the surfaces.
At the same time, air travels through the channels.
The geometry creates turbulence and repeated changes in the water and airflow paths. This improves interaction between the two fluids.
Of course, there is a balancing act.
More surface area sounds great, right?
Not necessarily.
If the passages are extremely narrow, dirty water can cause rapid fouling. If the geometry creates too much resistance, fan energy requirements can increase.
That is why modern cooling tower fill design is always a balance between thermal performance, pressure drop, water quality, and fouling resistance.
Brentwood, for example, offers different film-fill geometries ranging from cross-fluted designs to fouling-resistant vertical-fluted products.
Film fill and splash fill solve the same basic problem in different ways.
Film fill encourages water to spread across structured surfaces.
Its major advantage is the large effective contact area that can be created inside the fill volume.
PVC film fill is commonly used where water quality is suitable and high thermal performance is important.
Splash fill repeatedly breaks water into droplets as it falls through the fill.
This approach can be useful in applications where suspended solids, biological contamination, or fouling create challenges for narrow film-fill passages.
So, which is better?
There is no universal answer.
A clean-water HVAC system and a heavily contaminated industrial process are two very different environments.
The right fill is the one that matches the actual operating conditions.
Why do so many cooling tower manufacturers and replacement suppliers use PVC?
Because PVC provides a useful combination of performance, weight, formability, corrosion resistance, and cost.
The structured geometry of PVC film fill creates a large surface area for water-air contact.
This allows the tower to achieve substantial heat-transfer performance within a relatively compact fill volume.
That is especially useful when space is limited.
PVC fill is relatively lightweight compared with many traditional cooling tower materials.
That makes handling easier during installation and replacement.
For a large cooling tower repack project, installation labor matters. A fill system that is easier to transport, cut, position, and assemble can simplify the project.
PVC does not rot like traditional wood fill.
It also offers resistance to many common cooling-water environments.
However, buyers should never assume that every PVC formulation is suitable for every chemical or temperature condition.
Material selection still matters.
PVC sheets can be formed into many different geometries.
That allows manufacturers to develop products for different:
Crossflow towers
Counterflow towers
Water qualities
Airflow conditions
Thermal requirements
Replacement configurations
This flexibility is one reason PVC remains important in the cooling tower industry.
Buying cooling tower fill is not the same as buying ordinary plastic sheet.
The supplier needs to understand how the material will operate inside a thermal system.
Before choosing a manufacturer, look at several factors.
Can the supplier actually manufacture the fill, or is it simply reselling generic products?
A direct manufacturer can usually communicate more effectively about:
Material
Thickness
Flute geometry
Block dimensions
Production tolerances
Packaging
Customization
Replacement requirements
That can become especially important when your tower uses non-standard dimensions.
Replacement projects rarely happen in a perfect world.
The original tower may be 10, 15, or 20 years old.
The original fill may no longer be available.
The support system may have been modified.
The original manufacturer may have changed its product design.
That is why custom manufacturing capability can be valuable.
A supplier should be able to work from drawings, dimensions, photographs, samples, or existing fill specifications where appropriate.
Water quality is one of the most important factors when selecting fill.
Ask:
Is the water clean?
Does it contain high TSS?
Is biological growth a concern?
Is scaling common?
Are oils or process contaminants present?
Is the tower exposed to seawater or brackish water?
A high-efficiency film fill may perform extremely well under suitable conditions but become difficult to maintain if the water contains excessive solids.
Now let's look at five manufacturers and brands worth considering when researching PVC cooling tower fills.
For buyers looking specifically for a China-based PVC cooling tower fill manufacturer and supplier, Power Tower Cooling Technology (Shaoxing) Co.,Ltd is the first company on this list.
The company focuses on cooling tower components and replacement solutions through CoolingTowerPart.
Power Tower Cooling Technology / CoolingTowerPart
This makes it particularly relevant to buyers looking for replacement fill rather than an entirely new cooling tower.
Cooling tower fill products can be used for both new projects and replacement applications.
For a replacement project, the supplier needs to consider much more than the material.
The fill needs to match the tower's:
Configuration
Fill dimensions
Airflow
Water loading
Operating temperature
Water quality
Support structure
Required thermal performance
Power Tower Cooling Technology provides cooling tower fill and related tower components for these types of requirements. Its current product information includes PVC counterflow film fill designed for industrial cooling, HVAC, power-generation, chemical-processing, manufacturing, and refurbishment applications.
One of the most important considerations for international buyers is customization.
Suppose you remove the old fill from a cooling tower and discover that the dimensions don't match today's standard catalog sizes.
What do you do?
This is where direct communication with a manufacturer becomes useful.
Instead of buying a standard product and hoping it fits, you can provide measurements and application information and discuss a compatible configuration.
For larger projects, buyers should provide as much technical information as possible, including:
Tower type
Existing fill dimensions
Fill height
Fill width
Sheet thickness
Water temperature
Water flow
Airflow
Water quality
Photos of existing fill
For customers sourcing from China, Power Tower can be relevant when the project requires:
PVC cooling tower fill
Counterflow fill
Crossflow fill
Replacement fill packs
Customized dimensions
Cooling tower components
Direct manufacturer communication
For B2B buyers, the biggest advantage of working directly with a manufacturer is often not simply the purchase price.
It is communication.
When something needs to be changed, clarified, measured, or customized, direct technical communication can make the sourcing process much smoother.
Brentwood Industries is an established supplier of cooling tower components and engineered fill products.
Its current cooling tower portfolio includes film fills, trickle fills, splash fills, drift eliminators, louvers, nozzles, and other accessories.
For PVC film fill specifically, Brentwood offers several geometries designed for different performance and fouling requirements.
Its product portfolio includes cross-fluted, herringbone, offset-fluted, and vertical-fluted designs.
This is where Brentwood illustrates an important point about cooling tower fill.
PVC is only the material.
The geometry is the engineering.
Two products may both be made from PVC but perform differently because their flute angle, channel size, sheet spacing, surface structure, and airflow resistance are different.
For example, Brentwood's CFS3000 is designed with larger channels intended to reduce fouling potential in lower-quality water while maintaining thermal performance.
That kind of application-specific design can be important for industrial cooling towers.
SPX Cooling Technologies is another major name in cooling tower technology, with Marley as its well-known cooling tower brand.
For buyers seeking OEM or aftermarket cooling tower fill, Marley offers multiple PVC fill configurations.
SPX's Marley portfolio includes products such as MC75, MVC20, FB20, DF381, MCR, and MBX.
The MC75, for example, uses thermoformed PVC with a cross-corrugated design for counterflow applications.
Marley's MVC20 uses thermoformed rigid PVC and a vertical-channel configuration intended to combine thermal performance with low-clog characteristics.
The MBX is a bottom-supported PVC crossflow film fill designed for aftermarket applications and includes integrated louvers and drift eliminators.
This broad product range means buyers can select different fill configurations according to tower type and operating requirements.
For owners of Marley equipment, OEM compatibility may also be an important consideration.
Baltimore Aircoil Company, commonly known as BAC, is another major manufacturer in evaporative cooling.
BAC provides replacement fill kits for its cooling tower equipment.
BAC's current replacement fill portfolio includes BACount, BAC Pak, and BACross product families.
For example, BACount replacement fill kits are available in standard PVC and CPVC versions, with the latter intended for higher-temperature applications. BAC states that the kits are designed to maintain the thermal performance originally certified by CTI.
BACross replacement fill kits are available for several BAC crossflow tower series and are also offered for competitor crossflow units.
This illustrates an important benefit of buying from an established OEM: the supplier can connect the fill replacement to a specific cooling tower configuration.
For a facility manager who wants a straightforward replacement process, that can be valuable.
EVAPCO is another established manufacturer in the evaporative cooling industry.
Its EVAPAK fill is a PVC fill product designed for cooling tower applications.
According to EVAPCO's product documentation, EVAPAK uses a cross-fluted counterflow pattern intended to promote air-water mixing and heat transfer. The fill is constructed from PVC and designed for resistance to rot and decay.
EVAPCO also states that EVAPAK can be custom designed and manufactured for forced-draft equipment, including replacement applications involving equipment from other manufacturers.
That makes EVAPCO relevant not only to new cooling equipment but also to replacement and retrofit projects.
| Supplier | Typical Strength | Fill / Product Focus | Suitable Buyer |
|---|---|---|---|
| Power Tower Cooling Technology | Direct manufacturing and customization | PVC/PP fill and cooling tower components | China sourcing, replacement and custom projects |
| Brentwood Industries | Broad engineered fill portfolio | Film, trickle and splash fill | Industrial and performance-focused applications |
| SPX / Marley | OEM and aftermarket expertise | PVC film and splash fill | Marley and retrofit projects |
| BAC | Integrated OEM replacement systems | PVC/CPVC replacement fill kits | BAC equipment owners |
| EVAPCO | Evaporative cooling expertise | EVAPAK and related fill solutions | EVAPCO and industrial cooling systems |
This table should not be interpreted as a universal ranking of product quality.
Each supplier has a different business model, product portfolio, tower compatibility, and project focus.
Choosing the supplier is only half the job.
You also need to choose the correct fill.
First, identify whether the tower is:
Crossflow
Counterflow
Factory assembled
Field erected
Open circuit
Closed circuit
Crossflow and counterflow towers use different airflow and water-flow arrangements.
Do not assume that a product suitable for one configuration will automatically be suitable for another.
PVC fill has operating-temperature limitations.
For example, Marley documentation identifies temperature limits for standard PVC film-fill products and notes that special high-temperature PVC formulations are available for higher-temperature applications.
So always provide the actual operating temperature when requesting a quotation.
Don't just say:
"I need PVC cooling tower fill."
Instead, provide the hot-water temperature and any expected temperature excursions.
Water quality can completely change the fill-selection equation.
If the circulating water is relatively clean, a high-efficiency film fill may be appropriate.
If the water contains large amounts of suspended solids, biological growth, debris, or other contaminants, a more open or fouling-resistant design may be more appropriate.
The goal is not maximum theoretical surface area.
The goal is stable performance in real operating conditions.
This sounds obvious, but dimensional errors are among the easiest ways to turn a simple replacement into a difficult installation.
Measure:
Length
Width
Height
Air travel
Sheet thickness
Block arrangement
Support spacing
If possible, send photographs and drawings to the supplier.
A good manufacturer can then review the application before production.
The cheapest fill is not necessarily the lowest-cost solution.
If it clogs quickly, deforms, creates excessive pressure drop, or requires premature replacement, the initial saving may disappear quickly.
Look at total operating cost instead.
A high-efficiency fill can become a maintenance problem if the water contains excessive solids or biological contamination.
Always discuss water quality with the supplier.
It isn't.
Thickness, formulation, flute design, surface texture, spacing, bonding method, and block configuration can all vary.
The words "PVC film fill" describe a product category, not one identical product.
Never order replacement fill based only on the tower name.
Two towers that look similar externally can have different internal fill arrangements.
Measure first.
The fill itself is only one part of the replacement project.
You may also need to check:
Fill supports
Retainers
Louvers
Drift eliminators
Nozzles
Water distribution
Access clearance
A good supplier should be able to discuss these surrounding components when necessary.
When replacing old PVC fill, start with an inspection.
Look for:
Brittle sheets
Sagging
Broken sections
Heavy scale
Biological growth
Clogged passages
Deformation
Uneven water distribution
If the existing fill is badly fouled, simply washing it may not restore its original performance.
In some cases, replacement is more practical.
The replacement project should then be treated as an engineering exercise rather than a simple plastic-parts purchase.
Measure the existing fill.
Check the support structure.
Confirm water and air conditions.
Then select the replacement product.
This process can reduce surprises during installation.
If you want a faster and more accurate quotation, give the supplier useful information from the beginning.
A good RFQ should include:
Cooling tower manufacturer
Tower model
Crossflow or counterflow configuration
Existing fill dimensions
Required quantity
Water temperature
Water flow
Water quality
Fill type
Photos
Drawings, if available
Required delivery destination
The more information you provide, the less guessing the manufacturer has to do.
And less guessing usually means fewer mistakes.
Before purchasing PVC cooling tower fills, ask yourself:
Does the fill match my tower configuration?
Is the PVC formulation suitable for my temperature?
Can it handle my water quality?
Is the flute geometry appropriate?
Are the dimensions correct?
Is the fill compatible with the existing support system?
Is the supplier a manufacturer or trader?
Can it provide customized dimensions?
Does it have replacement experience?
Can it provide technical specifications?
Can it support international shipments?
Can it supply related cooling tower components?
Can it communicate clearly about installation requirements?
What is the total quantity?
What is the production lead time?
What packaging is used?
What are the shipping terms?
What quality documentation is available?
What happens if the dimensions need to be adjusted?
These questions are much more useful than simply asking:
"How much per square meter?"
Finding the right PVC cooling tower fills supplier is about much more than comparing five company names.
The real question is whether the fill matches your tower and operating environment.
Power Tower Cooling Technology (Shaoxing) Co.,Ltd is particularly relevant for buyers looking for a China-based manufacturer and supplier of cooling tower fill, replacement fill, and related tower components. Its CoolingTowerPart platform provides PVC fill solutions for applications including replacement and refurbishment projects.
Brentwood Industries offers a broad portfolio of engineered film-fill geometries and other cooling tower components, including designs aimed at balancing thermal performance and fouling resistance.
SPX Cooling Technologies / Marley provides a wide range of OEM and aftermarket PVC film-fill options for different tower configurations.
Baltimore Aircoil Company provides replacement fill kits in PVC and higher-temperature materials for various BAC equipment configurations.
EVAPCO offers EVAPAK PVC fill and replacement-oriented cooling tower solutions.
So, which supplier should you choose?
Start with your tower, not the supplier name.
Identify the tower configuration, water temperature, water quality, fill dimensions, thermal requirements, and replacement conditions. Then compare suppliers based on manufacturing capability, product compatibility, customization, technical support, and total project cost.
After all, the best cooling tower fill is not simply the product with the lowest price or the highest theoretical efficiency.
It is the fill that fits the tower, handles the water, delivers the required thermal performance, and keeps working reliably in the real world.
