Imagine you’re enjoying the cozy heat inside the comfort of your home. Then you feel a chill and realize your heater stopped working. What do you do? It’s normal for heaters to stop functioning due to several reasons. A low-quality thermostat, low water level, broken wires, or dirty filters to name a few. If you happen to notice your heater stops functioning, here are a few things you can do: Check The Thermostat A common reason why a heater stops working is because the thermostat causes a reduction in heat. What you can do in this situation is check the thermostat battery level. If you know how, you can also replace the battery. Should the problem persist, it may from low power. Also make sure that it is in heat mode. Clean The Air Filters Another factor that may lead to the dysfunction of your heater is the air filter. If there’s too much dirt clogging up the air filters, it can cause the air filter to slow down and destroy the system. It’s advisable to have the air filters changed at least once a month to keep it functioning. If you experience further problems with your air filters, change them out on a monthly basis.