Ask us anything

How can I adjust the blower motor speed on my Goodman variable-speed furnace for comfort?

To adjust the blower motor speed on your Goodman variable-speed furnace for comfort, you'll typically need to access and adjust the settings on the furnace control board. Keep in mind that the specific steps may vary depending on your furnace model, so consult your furnace's user manual for detailed instructions. Here's a general guide:

1. Turn Off Power: Before making any adjustments, ensure the power to the furnace is turned off. Locate the power switch or breaker for the furnace and switch it off.
2. Access the Control Board: The control board is usually located inside the furnace cabinet. You may need to remove the furnace panel to access it. Be cautious and follow safety guidelines, as you'll be working with electrical components.
3. Locate the Blower Motor Speed Settings: On the control board, you should find a section dedicated to blower motor speed settings. These settings might be labeled as "Speed," "Fan Speed," or something similar.
4. Adjust the Speed: Depending on your Goodman furnace model, you may have different ways to adjust the speed:
a. Dip Switches or Jumpers: Some furnaces use dip switches or jumpers to set the speed. These are small switches or connectors that can be moved to different positions. Consult your furnace manual to determine which switch position corresponds to your desired blower speed and adjust accordingly.
b. Digital Controls: Newer models may have a digital control panel. In this case, use the control panel to navigate through the settings menu. Look for an option to adjust fan speed and select your preferred setting.
c. Variable Speed Control: In some variable-speed models, you can use a dial or knob to manually adjust the blower speed. Turn the dial to the desired speed level.
5. Test the Furnace: After making the adjustment, turn the power back on to the furnace. Set your thermostat to the desired temperature and observe how the furnace operates. Listen for changes in the blower speed to ensure it's operating at your preferred comfort level.
6. Fine-Tune if Necessary: If you find that the current blower speed isn't providing the comfort you desire, you can repeat the adjustment process to try different settings until you achieve the desired airflow and temperature distribution.
7. Monitor Performance: Pay attention to how your furnace performs over time. It may take some trial and error to find the ideal blower speed for your comfort needs. Additionally, keep the furnace well-maintained by replacing filters regularly and scheduling annual professional inspections.
8. Safety Precautions: Always prioritize safety when working with electrical components. If you're unsure about any part of the adjustment process or feel uncomfortable doing it yourself, it's best to consult a professional HVAC technician to make the adjustments for you.

Remember that adjusting the blower motor speed can impact energy efficiency and overall system performance, so finding the right balance between comfort and efficiency is essential. If your furnace has advanced features or you're uncertain about the adjustments, consider contacting a qualified HVAC technician for assistance.
Connect to virtual expert

Our virtual experts can diagnose your issue and resolve simple problems.