Pushing PC Cooling to the Limit – The Air Conditioner Experiment You Shouldn’t Try
For most PC enthusiasts, air coolers and AIO liquid cooling provide plenty of thermal performance for gaming and overclocking. But for those seeking the absolute lowest temperatures, some extreme cooling methods push the boundaries of conventional setups. One such experimental build has taken things to an unprecedented level—integrating a full-sized residential air conditioner into a custom liquid cooling loop.
A Chinese video producer, known for over-the-top PC builds, recently demonstrated this setup on Bilibili, using a 12,000 BTU Xiaomi air conditioner to cool an Intel Core i9-13900K and RTX 4090. The results? Idle temperatures of just 20°C (68°F) and minimal increases even under heavy workloads. This innovative cooling approach proves that an air conditioner can, in theory, outperform even the best liquid cooling systems—but at what cost?
While this experiment delivers impressive temperature control, it’s far from a viable cooling solution for most users. The sheer size of the air conditioning unit rivals that of a full gaming PC, making it impractical for standard setups. Noise is another issue—residential AC units aren’t designed for quiet operation in a gaming environment. Additionally, it requires external installation, as running it indoors would generate more heat than it dissipates.
Perhaps the most concerning factor is power consumption. With over 1,000W of energy draw, this cooling system alone consumes more electricity than an entire high-performance gaming PC. Factor in installation complexity, space requirements, and excessive costs, and it’s clear why this method isn’t a practical alternative to high-end liquid cooling.
While it’s always fascinating to see PC cooling innovation taken to the extreme, most enthusiasts will find that a high-quality AIO or air cooler remains the most effective and efficient solution. Some ideas are best left as engineering experiments rather than practical builds.