Hello, Mathew! Yes, the VESDA Sensepoint XCL is indeed a suitable replacement for the Vesda ECO-SC-15. It offers advanced detection capabilities and is designed to provide reliable and early warning smoke detection. The Sensepoint XCL is known for its high sensitivity and fast response, ensuring optimal fire detection performance. Many users have successfully transitioned from the ECO-SC-15 to the Sensepoint XCL without any issues. I would recommend considering the Sensepoint XCL as your replacement choice. If you have any specific questions about its features or installation, feel free to ask!