Furnace repair needed: Routine furnace maintenance, I need help figuring out what is wrong. Furnace problems: No heat: No, Not enough heat: No, Unusual noises from inside: No, System keeps cycling: No, Pilot light is out: No, I am not having any issues: No, Other: water leaking and cleaning. Fuel source: Natural gas. Furnace location: Basement. Building height: Other (3). Type of property: Home.