The blower speed of the furnace should only be adjusted by a qualified service technician.
Furnaces that are used in most homes are powered by gas, wood or coal. One type of furnace that uses gas to provide heat is a high-efficiency Amana furnace. When your Amana furnace does not work properly or fails to provide heat, try troubleshooting to correct the problem. Problems that can occur with an Amana furnace include a dirty filter or temperature variations.
Disconnect the power to the furnace by turning off the breaker at the circuit panel.
Lift up and slide the non-louvered door out of the furnace.
Locate the filter that is on the left side of the blower. Push up on the filter to lift it up from the filter rack and then pull it down along the left side of the blower. Remove the filter by pulling it out of the blower door. Repeat this step for the filter on the right side of the blower.
Examine each of the filters and see if they are dirty or damaged. If you have a permanent filter that has been damaged or cannot be cleaned, a new one will need to be ordered from Amana.
Insert the new filter on the right side of the blower. Push the filter up until the bottom of the filter rests on the filter rack. Repeat this step for the filter on the left side of the blower.
Set the door back into place and then reconnect the power by turning on the breaker.
Open all of the registers in the house and all of the dampers on the ducts. Turn on the furnace and let it run for at least 15 minutes.
Set a thermometer at the heat register and cold air return register that are closest to the furnace.
Make a note of the reading of the temperature rise. The temperature rise is the difference between the reading on the thermometer at the heat register and the reading on the thermometer at the cold air return register.
Compare the temperature rise with the range that is stamped on the rating plate. The temperature rise is also specified in the specification sheet that came with the unit.
Adjust the blower speed to increase or decrease the temperature rise to the required level.
Cameron Easey has over 15 years customer service experience, with eight of those years in the insurance industry. He has earned various designations from organizations like the Insurance Institute of America and LOMA. Easey earned his Bachelor of Arts degree in political science and history from Western Michigan University.