Building a custom water cooling loop for your PC can significantly improve thermal performance and aesthetics. However, finding a budget-friendly case that supports custom water loops without breaking the bank can be challenging. In 2026, several cases under $100 offer great value for budget-conscious enthusiasts. This article explores the best options for budget cases suitable for custom water loop builds.

Factors to Consider When Choosing a Budget Case for Water Cooling

Before selecting a case, it's important to consider several factors to ensure compatibility and ease of installation:

  • Support for Radiators: Ensure the case can accommodate the size and number of radiators you plan to install.
  • Interior Space: Ample space for custom loop components and clearance for airflow.
  • Build Quality: Durable materials that can support the weight of water cooling hardware.
  • Ease of Installation: Features like removable panels and good cable management.
  • Airflow and Ventilation: Adequate fan mounts and ventilation options.

Top Budget Cases for Custom Water Loop Builds in 2026

1. Cooler Master MasterBox Q300L

The Cooler Master MasterBox Q300L is an affordable and versatile case that offers decent support for custom water cooling. Its compact design makes it ideal for small builds, and it supports radiators up to 240mm in size.

2. Thermaltake Versa H15

The Thermaltake Versa H15 provides a straightforward layout with good interior space for custom loops. It supports up to a 240mm radiator on the top and front, making it suitable for budget water cooling setups.

3. Deepcool MACUBE 110

The Deepcool MACUBE 110 is a compact case with excellent support for water cooling. It features a modular design, allowing easy installation of radiators and pumps, all within a budget-friendly price point.

4. NZXT H510

The NZXT H510 is a popular mid-tower case that supports custom water cooling with its ample space and radiator support up to 280mm. While slightly above $100 in some regions, discounts often bring it within budget.

Conclusion

Building a custom water loop on a budget is achievable with the right case. The Cooler Master MasterBox Q300L, Thermaltake Versa H15, Deepcool MACUBE 110, and NZXT H510 are excellent options in 2026 under $100. Consider your specific cooling needs, case compatibility, and ease of installation when choosing the best case for your build.