How this site earns

This independent website provides research and planning estimates. We are not a manufacturer, contractor or installer.

Current status

There are no live retail affiliate links, installer referral number or paid matching-service route on this site. Source links support the research. Product recommendations come from published specifications and stated limitations.

Possible future referral arrangement

If a paid matching-service number is added, the service identity and compensation statement will appear beside it. The statement will distinguish that service from this website and from a named contractor. Any future retail affiliate links will be identified where required.

Research limits

We have not tested the equipment in homes. Planning ranges are based on stated sources and assumptions, not quotes. Actual scope and local installation conditions can change the cost.

Read the methodology or use contact for a correction.