General
Why should I choose water cooling over air cooling?
Where can I buy Alphacool products?
Are there official Alphacool retailers or distributors worldwide?
Is there an official Alphacool forum or community for customers?
How sustainable are Alphacool products?
Are Alphacool AIOs sustainable?
Orders & Shipping
Which payment methods are accepted?
What is the difference between standard and express shipping?
Does Alphacool offer international shipping?
Which shipping providers does Alphacool use?
How long does shipping take?
What are the shipping costs?
Are there any shipping restrictions for certain products?
Is free shipping available for orders over a certain amount?
Can I combine multiple orders to save on shipping costs?
Can I specify a delivery date or time for my order?
What should I do if my package is lost during shipping?
How can I check the status of my order?
Can I modify or cancel my order after it has been placed?
Products and compatibility
What is the difference between the Core, Apex, and ES product lines?
How can I find out if a GPU water block is compatible with my graphics card?
Are Alphacool radiators compatible with G1/4" fittings from other manufacturers?
Can I combine Alphacool GPU coolers with backplates from other manufacturers?
Does Alphacool offer water blocks for the latest Nvidia and AMD GPUs?
Which sockets are supported by Alphacool CPU coolers?
Are Alphacool coolers compatible with liquid metal?
What radiator size do I need for my system?
Which pumps are compatible with Alphacool reservoirs and distro plates?
Can I have custom water cooling solutions made by Alphacool?
Installation and maintenance
How do I properly fill my water cooling system?
Which liquids should I use for my system?
When should I maintain my water cooling system?
How do I bleed my system if air bubbles are present?
My water cooling system is making noise – what can I do?
Are Alphacool pumps PWM-controlled?
Do I need special tools for installation?
How do I properly apply thermal paste?
Are the included thermal pads sufficient, or do I need additional ones?
How do I clean my water cooling loop?
Return & Guarantee
How long is the warranty on Alphacool products?
How long do I have to return an order?
Does the product need to be unused to return it?
How does the return process work for defective products?
I purchased my product from a third-party retailer – can I still claim it with Alphacool?
Do I need to return the product in its original packaging?
Do I have to pay for the return shipping myself?
How long will it take to process my return?
Can I exchange my order instead of receiving a refund?
My product has scratches or manufacturing defects – can I exchange it?
My product was damaged during shipping – what should I do?
Can I have my order delivered to a parcel locker?
Contact and Support
How can I reach Alphacool's technical support?
Is there a hotline for urgent inquiries?
I'm not receiving any response by email – what should I do?
Can I contact Alphacool on social media?
Technical questions
What materials does Alphacool use?
What is the maximum water temperature that is safe for Alphacool components?
How are temperature and flow sensors connected and read?
What software is required to control RGB in Alphacool products?
How do I find the right tube/hard tube and fitting size?
Water cooling provides more efficient heat dissipation, keeping high-performance components like CPUs and GPUs cool even under heavy load. It often operates more quietly, as the fans can run slower while still achieving the same cooling performance. Additionally, it offers aesthetic design options, especially with custom loops featuring unique designs and RGB lighting.
Our products are available directly from our online store as well as through numerous distributors and retailers worldwide. For an overview of official partners, visit our "Where to Buy" page.
Yes, Alphacool works with a variety of retailers and distributors worldwide. A complete list of our official partners can be found on our "Where to Buy" page.
Yes! Alphacool has its own official forum where customers, enthusiasts, and our support team can interact. You can ask questions, share experiences, and directly connect with us.
Additionally, we are active on our social media channels on Instagram, Facebook, Twitter, and Reddit.
Alphacool places great emphasis on sustainability and the durability of its products. Our liquid cooling solutions are made from high-quality materials such as copper and brass, ensuring long-lasting performance and efficient cooling.
To conserve resources, we support the Right to Repair – many of our products are modular, allowing individual components to be easily replaced or repaired. Additionally, we offer B-stock products, which are fully functional and tested but have only cosmetic defects. This gives these items a second chance instead of being discarded, helping to reduce waste and conserve resources.
Through these efforts, Alphacool actively contributes to sustainability without compromising on quality and performance.
Alphacool AIO (All-in-One) liquid coolers are designed to be maintained and repaired rather than replaced after a certain period. Unlike many traditional AIOs, our models are modular, allowing components such as tubes, coolant, fittings, or even the pump to be replaced.
This supports the Right to Repair and ensures that an Alphacool AIO doesn't need to be discarded if a single component fails. This significantly extends the lifespan of the product and helps conserve resources.
With this sustainable design, Alphacool offers a repairable alternative to conventional AIOs, which are often designed as disposable products.
We offer various payment methods, available depending on the country:
Credit card and prepayment – These options are available worldwide. PayPal – Available in most countries, with a few exceptions. Cash on delivery – Also available for orders within Germany.
You can view the exact payment methods for your country during the checkout process.
Standard shipping is the regular shipping option with a typical delivery time depending on the destination country. This shipping method is more affordable but can take several business days depending on the region.
Express shipping allows for faster delivery compared to standard shipping. This option is ideal for urgent orders but comes with higher shipping costs.
The available shipping options will be displayed during the checkout process.
Yes, Alphacool ships internationally via UPS and DHL. However, there are some restrictions, and certain regions and countries are excluded from shipping. This includes smaller island nations and countries with limited shipping options.
Alphacool ships packages with DHL and UPS.
Typically, it takes 1–3 business days for the order to be handed over to the shipping carrier. During peak times, such as December and January, as well as before or during various holidays, delays may occur due to high order volumes.
Shipping costs depend on various factors, including the weight and dimensions of the package, the delivery location, and the chosen shipping option (e.g., DHL Priority or UPS Express). The exact costs will be displayed during the ordering process.
Yes, certain products like chillers and skeleton cases are only available for pallet shipping due to their size and weight. These items cannot be shipped through the regular online ordering process.
For an order or more information, please send an inquiry via email to info@alphacool.com.
Whether free shipping is possible must be checked on an individual basis. An inquiry can be sent via email to info@alphacool.com.
Yes, this is possible. Please leave a note with the order and provide the order number of the other purchase.
Yes, this is possible. Please leave a note with the order specifying the desired delivery date or preferred delivery time. We will do our best to accommodate it.
If the package has not arrived after four weeks, a trace request must be submitted to the shipping carrier. Please also inform us of the incident via email at info@alphacool.com so that we can assist with the process.
Once your order is packed and handed over to DHL, you will automatically receive an email with the tracking information. This will allow you to track the shipping status online at any time.
Please also check your spam folder in case the email does not appear in your inbox.
Yes, an order can be changed or canceled as long as it has not yet entered the picking stage. Otherwise, it can be easily modified or canceled.
To request a change or cancellation, please send an email to info@alphacool.com.
Alphacool divides its products into three series, each tailored to different needs:
- Core – The ideal choice for gamers and PC builders seeking reliable, high-performance liquid cooling with good value for money.
- Apex – Designed for enthusiasts and overclockers who require top-tier cooling performance and innovative technologies.
- ES (Enterprise Solutions) – Specifically designed for professional use in servers, workstations, and industrial applications, optimized for maximum efficiency and durability.
You can easily check the compatibility of a GPU water cooler using our GPU configurator on the Alphacool website.
Here’s how the GPU configurator works:
- Select the chip – Choose the manufacturer of your graphics chip (e.g., Nvidia or AMD) and the corresponding chip.
- Choose the series – Select the appropriate graphics card series (e.g., RTX 4080, RX 7900 XT).
- Select the manufacturer – Pick the manufacturer of your graphics card (e.g., ASUS, MSI, Gigabyte).
- Choose the exact GPU – Find your specific model and get a list of compatible water coolers.
!! Important: If no water cooler is displayed, it means we currently do not offer a compatible cooler for this model.
Yes, all Alphacool radiators use standardized G1/4" fittings, which are compatible with most fittings, connectors, and tubes from other manufacturers. As long as the components used also feature G1/4" threads, they can be easily integrated into existing water cooling systems.
The compatibility of Alphacool GPU coolers with backplates from other manufacturers is not guaranteed. Backplates are often specifically designed for certain coolers and graphics card models, which can lead to incompatibilities due to differences in design and dimensions.
Each Alphacool GPU cooler already includes a matching backplate, designed for optimal fit and cooling performance. We recommend using the provided backplate to avoid potential issues.
Yes, Alphacool already offers water coolers for the latest NVIDIA RTX 5080 and RTX 5090 graphics cards. For AMD graphics cards, models for the Radeon RX 7000 series are currently available, and coolers for the upcoming Radeon RX 9000 GPUs are already in development.
To find the right cooler for your model, we recommend using the GPU configurator on our website. If no cooler is displayed for your GPU, we currently do not have a compatible water cooler for that model in our range.
The supported sockets vary depending on the model. You can find detailed information about this in the datasheet and product description of the respective cooler. For some models, optional brackets are also available to allow compatibility with additional sockets.
Yes, Alphacool coolers are made of copper and are compatible with liquid metal thermal pastes. However, slight residue may remain on the cooler surface when removing it. This usually does not affect cooling performance, but it should be cleaned as thoroughly as possible before reapplying.
Choosing the right radiator size depends on two main factors: How much heat needs to be dissipated? and How quiet do you want the system to be?
Calculating Heat Dissipation:
To determine the required cooling capacity, add the TDP values (watts) of your CPU and GPU. These values indicate how much heat needs to be dissipated.
Radiator Size and Cooling Performance
For nearly silent cooling:
- 120mm radiator area → approx. 140-160W cooling capacity
- 140mm radiator area → approx. 160-190W cooling capacity
For audible but not disruptive cooling:
-120mm radiator area → approx. 160-220W cooling capacity
-140mm radiator area → approx. 190-230W cooling capacity
Maximum cooling performance (with fans over 2000 RPM):
A 120mm radiator with 30mm thickness can theoretically dissipate up to 350W, but it requires very high fan speeds.
A 360mm radiator (three 120mm fans) can handle about 420-480W of heat dissipation at a low noise level, while a 420mm radiator (three 140mm fans) can dissipate about 480-660W almost silently.
Radiator Thickness:
- From 45mm thickness onwards, dual-sided fan configuration is recommended, as more air pressure is needed.
-For every additional 15mm of thickness, you can roughly expect 35W more cooling capacity.
Fan Selection:
Fans with high static pressure (measured in mmH²O) are crucial for efficiently pushing air through the fins. Depending on the fan speed and pressure ratio, they can significantly affect actual cooling performance.
The perceived noise level is subjective and can vary depending on the system configuration.
The compatibility depends on the specific model. Many Alphacool reservoirs and distroplates are designed for D5, DDC, and DC-LT pumps. For more detailed information on the compatible pump, please refer to the product description and datasheet of the respective item.
Yes, Alphacool can develop and manufacture custom liquid cooling solutions. However, this requires a minimum order quantity, which is typically not feasible for regular consumers. Custom products are mainly produced for industrial clients who require larger quantities.
Custom-made or low-volume items are generally very expensive due to the high development effort, making them unsuitable for most end customers.
Before filling your system, disconnect all power connectors from the motherboard, graphics card, and drives. Use an ATX jumper to power on only the power supply and pump. Make sure your power supply has a power switch to turn the pump on and off as needed.
Start by filling the reservoir with coolant. Then, power on the power supply so the pump can circulate the water through the loop. Since the fluid will be pumped quickly through the system, continuous refilling may be necessary, or you may need to turn off the pump intermittently to refill the reservoir.
The pump should never run dry, as this can cause damage. Spray bottles are especially useful for filling, as they allow for more precise dosing.
We generally recommend using our clear coolants, as they are specifically designed for our liquid cooling systems and help prevent deposits and corrosion. Colored coolants can also be used, but these systems should be cleaned regularly, as dyes can cause deposits over time, potentially clogging the cooling system.
Regular maintenance is recommended after about a year. If cooling performance noticeably decreases or particles are visible in the coolant, the fluid should be replaced immediately to ensure optimal performance and longevity of the system.
Air bubbles can settle at various points in the loop. To remove them, the system should be tilted and rotated in all directions so that the bubbles are carried by the water flow to the reservoir. Gently shaking the system can further assist this process.
If you're using a system with tubing, you can pinch the tube at various points for 1–2 seconds. This creates a short-term pressure increase, which, when released, can help dislodge any trapped air bubbles.
Even after several days or a week of operation, some bubbles may still release, causing the water level to drop slightly. Bleeding the system is a gradual process that sometimes requires patience.
Disturbing noises are usually caused by air pockets or air bubbles that have entered the pump.
- Air pockets in the system – If the system is not fully bled, please refer to the section "How do I bleed my system if air bubbles are present?" to remove the air from the loop.
- Air bubbles in the pump – Ensure that the reservoir is sufficiently filled with coolant. A well-filled reservoir is essential for smooth operation.
- Microbubbles in the pump – If microbubbles have become trapped in the pump, it can help to run the pump at full speed or low speed for a while. It may take several hours for the pump to expel the air bubbles, and the noises should disappear.
It depends on the specific model. Many Alphacool pumps, such as the Apex D5 PWM or the DDC310 PWM, feature PWM control, allowing the speed to be adjusted via the motherboard. Other models, like the DC-LT pumps, are controlled by a fixed voltage.
For more detailed information on the control, please refer to the product description and datasheet of the respective item.
No special tools are required for installation. In most cases, a Phillips screwdriver, a flathead screwdriver, and a small pair of pliers are sufficient.
If you need to cut tubes, we recommend using a tube cutter to ensure clean and precise cuts.
We recommend evenly spreading the thermal paste using a spatula. The amount should be about the size of a pea – using too much thermal paste can negatively affect cooling performance.
The paste is meant solely to fill in any gaps between the cooler and the CPU or GPU to ensure optimal heat transfer.
The included thermal pads are sufficient and appropriately cut for the respective product. Additional pads are usually not required.
Cleaning is only necessary if visible particles are present in the water. In this case, the system should be cleaned immediately:
- Drain the system – All coolant must be drained.
- Apply cleaning solution – Fill the system with distilled water and a cleaning kit.
- Flush the system – The cleaning solution should circulate through the system for 2-3 hours.
- Drain and refill – Afterward, refill the system with fresh coolant.
If stubborn deposits have accumulated in the cooling fins (e.g., on the GPU), please contact our support to determine the best cleaning method for your case. In this situation, images of the contamination will be required to offer the optimal solution.
The warranty period varies depending on the product. More detailed information can be found in the warranty terms, on the packaging, or in the included leaflet within the packaging.
!! Note: The warranty is valid only for the original purchaser and requires a valid receipt.
By law, you have a right of withdrawal of 14 days. In many cases, we also offer a goodwill-based return period of up to 30 days, which is evaluated on a case-by-case basis.
Products that are in their original packaging and unused can be returned without any issues. However, if an item has already been used, we reserve the right to deduct a certain percentage from the purchase price.
If you have a defective product, please contact us via email at info@alphacool.com with the following information:
- Invoice number or a copy of the invoice
- Photos or videos of the defect
- A detailed description of the issue
After reviewing your request, you will receive a free return label (only for customers within the EU), if approved. Customers outside the EU will need to cover the return shipping costs.
Once the defective product arrives, the processing will begin, which may take up to 10 days.
Yes, the product should be returned in its original packaging. If the original packaging is missing, we reserve the right to deduct a certain percentage from the purchase price.
Yes, products purchased from third-party retailers in Germany can be claimed with us in the event of a defect or exchange. We will need the purchase invoice for this.
Unfortunately, products purchased from third-party retailers outside the EU cannot be processed by us. In this case, you will need to contact the retailer from whom you purchased the product directly.
Yes, the customer is responsible for the return shipping costs if the value of the goods is under €50. If the value of the goods exceeds €50, we will cover the return shipping costs – this only applies to returns within Germany.
The processing of a return usually takes 1–3 business days. In more complicated cases, however, the processing may take up to 10 days.
Yes, an exchange is possible. Please send an email to info@alphacool.com indicating that you would prefer an exchange instead of a refund.
Yes, an exchange is possible. Please send an email to info@alphacool.com and attach pictures of the scratches or manufacturing defects so we can review the case.
If your product was damaged during shipping, please inform us immediately via email at info@alphacool.com. It is important to include the following information:
- Invoice number
- Photos of the visible damage (e.g., to the package or product packaging)
This will allow us to quickly review the incident and find a solution.
Yes, this is easily possible. During the ordering process, you can select the shipping option "Parcel locker"
You can reach Alphacool's technical support via email at info@alphacool.com. For phone inquiries, our support team is available Monday to Friday between 10:00 AM and 2:00 PM (CET) at +49 (0) 531 288740. Phone support is unavailable on German public holidays.
Yes, Alphacool offers phone support. Our team is available Monday to Friday between 10:00 AM and 2:00 PM (CET) at +49 (0) 531 288740. The hotline is not available on German public holidays.
If you haven't received a response to your email yet, please first check your spam folder, as our messages may occasionally end up there.
The average response time is about 2-3 business days. Please note that business days are Monday to Friday, based on German time (CET), and Saturday is not considered a business day. The processing time may vary depending on the volume of inquiries. We ask for your patience and will get back to you as soon as possible.
Yes, you can reach us on our social media channels. We are happy to assist with general inquiries there.
We are active on Instagram, Facebook, Twitter, and Reddit.
For detailed technical inquiries, however, we recommend contacting our support team at info@alphacool.com.
Water only comes into contact with the following materials: copper, brass, acetal, carbon, glass, nylon, and stainless steel. For aesthetic purposes, other materials like aluminum can also be used.
The maximum recommended water temperature for Alphacool components is 60°C (140°F). Our products are designed to operate safely and efficiently within this temperature range.
Flow sensors: These typically have a 3-pin connector, which is also compatible with 4-pin PWM connectors. The speed of the sensor is read in a similar way to a case fan. The flow value can be determined using a specific table linked to each sensor. Check if your motherboard software allows you to input this table to display the flow rate directly.
Temperature sensors: These require a special 2-pin connector on the motherboard. You can check if your motherboard has this connector in the motherboard manual. If no suitable connector is available, there are various controllers on the market that can be used to connect temperature sensors for reading the temperature.
The RGB lighting in Alphacool products is controlled through the motherboard's own software. Make sure your motherboard has a 3-pin 5V ARGB connector to adjust the lighting. If no suitable controller is available, alternative external controllers can be used.
The size specifications for tubes and fittings are provided directly in the product name and are listed in the format of outer diameter/inner diameter, e.g., 13/10 or 16/10.
- Tubes: The first value represents the outer diameter, and the second value represents the inner diameter. To find the matching fitting, the tube must have exactly the same designation. A 13/10 tube will only fit on 13/10 fittings.
- HardTubes: Only the outer diameter is relevant here, as the inner diameter does not affect the fittings. The inner diameter is used only to specify the wall thickness of the HardTube.
So, make sure that the tube or HardTube and the fitting match exactly to ensure a tight and secure connection.