Marian Cobuz
Hi Chris and yes you can do it yourself if you got the skills, the tools and are confident enough you wont flood entire place. I'll strongly recommend hiring a plumber, it seems to be a simple straightforward task yet only if know exactly what is required. Whole CH system might need drained and refilled, inhibitor added, balancing and bleeding probably also required. There are quite a few complications that may occur, depending of CH system type, like vented or unvented, I'll definitely hire a plumber. Good luck.
