Adjusting Thermostat Settings Does Not Change the Heater Settings
The problem lies in the thermostat if the heating appliance cannot apply the adjusted thermostat settings in one room or house. While there could be various causes behind this issue, the possible and permanent fix is to replace the current thermostat unit with a new one.
Reduced Airflow from the Ducts
Reduced airflow usually happens due to inconsistent maintenance of the heating appliance. The dust and dirt collect in the vents, air filters, or registers. Dust blocks the airways that let the hot air pass through. In addition, there may be a leakage in the ducts, causing the hot air to get lost in transition.
You are Receiving Chilly Air Instead of Hot Air
The problem is severe if the furnace appliance performs opposite to its intended use. When this happens, the issue lies in the gas valve, ignition, obstructed air filters, or condensate pipe. Therefore, reviewing the thermostat settings before calling experts for your heater repair is prudent.