Contact

Email contact@coilswapcheck.com.

Three things worth sending:

What this site cannot do is tell you whether a specific installation in your home is safe or code-compliant. That is your contractor's job, and it is not a formality — see the disclaimer.

This is a starting point, not an approval. Everything here is read from published manufacturer documents and dated, but only the licensed contractor who signs your installation can approve a specific system for your home and your local code. Take the citations on this page to them and ask.