Reader's question: Company increases heat pump bill by 25% without consultation. Is it allowed?

A homeowner faced a surprise price increase when an installation company billed over €8,200 for a heat pump initially quoted at €6,500. The article addresses the legal limitations on price hikes and whether companies can charge significantly more than their initial estimates without prior agreement.
Based on reporting by haarlemsdagblad. Translated and condensed by LocalHeadlines.

