What must not be disclosed about a furnace?

The correct answer focuses on the concept of material fact and the obligations within real estate transactions regarding property disclosures. When it comes to disclosures about a furnace, the age, location, and annual fuel consumption are all relevant pieces of information that potential buyers can use to evaluate the property. However, information about malfunctions within a specific timeframe, such as the last three years, can introduce complications related to liability and the subjective interpretation of what constitutes a 'malfunction.'

Disclosing malfunctions might imply ongoing issues or lead to legal repercussions if the furnace fails after the sale, even if properly maintained since the reported issues. Thus, while general information about the furnace can be provided, detailed disclosures regarding past performance issues, especially those that aren't recent or could be seen as general wear and tear, are not typically required. This ensures sellers are not inadvertently exposing themselves to future claims or liabilities associated with past issues.