Harold:
That's bull. REPLACEMENT falls under rehab. Installing a NEW HVAC system (CU & A Coil/Furnace, or an air handler) requires conformance with current NEC.
Call Susan Borek at DCA, and get her 'opinion', but remember as AHJ it's your opinion that counts (& your lic.)
Shock:
No, the code is not retroactive. The 'new' work has to comply, NOT anything that is existing, unless you touch it.
John
[This message has been edited by HotLine1 (edited 05-31-2006).]
