If you need a furnace installation in Johnstown, CO, My Guy Heating and Air, LLC wants to be your first choice. Furnaces have a limited lifespan, and some issues might cause your furnace to fail to satisfy your heating needs. When you notice inefficiency, poor air movement, and excessive energy expenses, it is time to consider a furnace replacement. It can be frustrating when your furnace starts malfunctioning or failing in the middle of winter. Some furnace failures are repairable, and sometimes it makes more sense to invest in a new heating system.