Contact

Write to [email protected].

What we can do

• Fix an error. If you find a wrong figure, tell us what and where — we correct it on the page and note the change.
• Explain a regulation, or point you at the primary source.

What we cannot do

• We do not diagnose your system remotely.
• We do not recommend or vet contractors.
• We cannot tell you whether you qualify for an incentive — the administering authority decides that.