After sale buyer claims label is wrong — what are my risks?
On sale with valid NTA 8800 label you're largely protected. Claim only on demonstrable error + non-disclosure of known defect. Defense explained.
On sale you must provide valid (≤10 yr) NTA 8800 label. Post-sale risks: (1) Buyer claims wrong label demanding price reduction — only succeeds on demonstrable error by certified EP advisor AND prior knowledge of defect by seller (disclosure duty BW 7:17(4)); (2) Buyer discovers hidden defects (no insulation where claimed) — stronger claim under consumer purchase (BW 7:5+); (3) Buyer loses subsidy — no claim against seller. Defense: (a) show label made by certified EP advisor with your good-faith info; (b) cite buyer's investigation duty (BW 7:17(5)) — buyer must check themselves; (c) mortgage lender required label, so known to buyer. For sellers with older or "indicative" label pre-2015: get NTA 8800 label BEFORE sale — prevents later claims. Advisor liability: certified EP advisor has own insurance — buyer can claim THERE too.