To refund for a non-compliant heating system, follow these steps: 1) Identify the non-compliance issues, 2) Review the warranty and manufacturer's policies, 3) Contact the seller or manufacturer for a resolution, 4) Document all communications, 5) Request a refund or replacement, and 6) Follow up until the issue is resolved. Non-compliant heating systems can pose safety risks and inefficiencies, leading to higher energy costs and potential hazards. According to the U.S. Energy Information Administration, nearly 40% of residential energy consumption is attributed to heating and cooling systems, highlighting the importance of compliance and the need for refunds in such cases.