Having your furnace work properly during winter is critical to your indoor comfort. It will be really impossible to imagine a relaxed and merry winter without a warm house. A properly working furnace plays a crucial role in the scenario of your happy life in winter. Each furnace requires a certain amount of combustion air to allow the flames to breathe properly. There is a method requiring total BTU’s and square footage of space feeding the gas appliances. If the space is not large enough, then it can cause the furnace to malfunction. The problem can usually be remedied by opening the furnace room door or adding vents to the room to allow more air into the space. On other occasions, air can be added from the exterior if it is accessible. The issue is that unconditioned air pushes into the home even when the system is not running. However, different types of damper systems can eliminate this type of issue. This is normally not an issue with a condensing furnace that has two PVC pipes to the exterior. These systems bring their own combustion air from the outside to feed the flames, thus they do not require combustion air from inside the home. If it only has one PVC pipe (exhaust only), then the furnace room requires combustion air. When you have a problem with a condensing furnace not staying lit, you may want to check the PVC pipe on the outside of the home to check for an occlusion (birds nest, kids toy, wasp nest…etc.). Another cause of this issue would be lack of air flow causing the furnace to overheat. The furnace has a control set to turn off the burners when the heat exchanger reaches a certain temperature. In most cases, the blower to the furnace will continue to run so it can cool down. Once it reaches the set cool down temperature, the burners should automatically reignite. If this continues to happen over time, the high limit control may malfunction and not allow the furnace to reset. At that point, it needs replacing by a qualified HVAC technician. The most common cause of an air flow restriction is simply a dirty filter. It is recommended homeowners visibly check their filters on a monthly basis. If the filter appears to be clogged or blocking air flow, then it must be replaced. In more extreme weather, homeowners are urged to check the filter more often due to longer furnace cycles. If the filter still appears relatively new upon checking, then there is no need to immediately replace it.
November 26, 2023
AC is leaking from the coil – HVAC Troubleshooting in San Diego
Have you encountered a leaking air conditioner? This causes not the most pleasant feelings and deprives you of comfort. Before solving this problem, you should determine what exactly became the source of the air conditioner flow.
