Any lake house that is more than 3 decades old has a high probability that parts of your gas furnace may need repair or adjustment. Each unit gives some signs that the gas furnace may be in need of repair. One is constantly having to adjust your temperature control. This shows the gas furnace needs repair. If your temperature control can’t in any way sustain the ambient temperature of your home, this indicates a problematic temperature control. Getting a new temperature control is cheap and easy, but you may want to consider upgrading to a smart temperature control with zone control that can be programmed via an app on your iPhone or PC. If you come upon chilly spots in your lake house, your gas furnace may be in need of repair. Cold spots show that the air in your lake house is not being circulated as expected. Having these chilly spots in your home, you may have an air flow issue within your Heating and A/C system. It’s an indicator of a clogged air filter or leaks in your ductwork, but your AC filter should be updated every 4 to 8 weeks, especially with pets indoors. Your air vents should be serviced annually to ensure that there are no leaks. If your gas furnace is noisy, it might be time to have your gas furnace serviced by a professional HVAC expert. As time marches on, components of your gas furnace will wear down or break, and need to be replaced. Regular inspection and repair by a licensed Heating and A/C professional is the best way to ensure that your gas furnace is in respected working order all year long. If you suppose your gas furnace may be in need of repair, give your local Heating and A/C company a call.