Hi there! That’s a great question and actually a common concern. Microchannel heat exchangers are indeed suitable for retrofitting older systems, especially when you look at what Kaltra https://www.kaltra.com/microchannel-heat-exchangers offers. Their designs are modular and quite flexible, making it possible to fit them into existing setups with only minor adjustments. Because of their compact size and lightweight nature, installation can often be done without major overhauls or structural changes. Kaltra also provides engineering support to help clients adapt their microchannel heat exchangers to many different legacy systems, ensuring you get the most out of your upgrade. Additionally, these exchangers can enhance overall system efficiency and lower energy costs, so even older HVAC or refrigeration installations can see real improvements in both performance and long-term savings. From my experience, Kaltra is one of the most reliable brands if you want modern technology with practical retrofitting options.