N.H. Code Admin. R. Env-Dw 1102.51
“Replacement” means the installation of new or refurbished equipment, accessories, or appurtenances for existing equipment, accessories, or appurtenances that no longer perform as originally intended.
Source. (See Revision Note #1 and Revision Note #2 at chapter heading for Env-Dw 1100) #13160, eff 1-20-21