The furnace of your home may be old and need some repairs before turning it off this summer. Therefore, you want to start spring with maintenance and repairs to the furnace. The system may need minor repairs now. The following furnace repairs for your home will help you prepare for warmer weather: Issues With the Thermocouple The thermocouple is an important component of your furnace. It is what controls that pilot light and shuts the gas off to keep you safe.