How do I adjust the fan speed on my furnace?

Published by Anaya Cole on

How do I adjust the fan speed on my furnace?

When increasing the blower speed, loosen the setscrew a little bit. This is the part that holds the pulley to the furnace’s driveshaft. Turn the pulley one rotation clockwise on the shaft. If you want even more speed, do two rotations.

How do I adjust the fan speed on my blower?

You can increase or decrease the blower speed by slightly adjusting the pulley on the blower drive motor. To increase blower speed, slightly loosen the setscrew that holds the pulley to the driveshaft. Move or turn the pulley clockwise on the shaft one turn, then tighten setscrew.

Do furnace fans have different speeds?

Many furnaces come with blowers or fans attached to 1-horsepower or fewer motors. Although many fans can achieve 1,200-revolutions per minute (RPM) speeds, some models may spin at slower speeds, particularly those with fairly small heating frameworks.

How do I increase the airflow in my furnace?

3 Simple Ways to Improve Your Furnace’s Airflow for More Comfort

  1. Unblock and clean your vents. Here’s a super easy way to increase air flow.
  2. Change your filters and clean your return grill. A dirty air filter impedes air movement and makes it hard for your furnace to work efficiently.
  3. Seal leaky ductwork.

Is higher fan speed better?

So, according to the US government, running the fan speed on high is the best course of action except on very humid days (but no explanation why). They also say that running on a low fan speed on humid days will both cool your home more effectively and remove more moisture.

What fan speed should my air handler be on?

What is the Recommended Speed for Your Blower? For peak performance, most AC manufacturers suggest that 400 cubic feet per minute (CFM) per ton of air conditioning should be used, meaning that 800 CFM should be moving through the evaporator coil for a 2-ton system, and so on.

What happens if blower speed is too high?

If a blower speed is set too high, your AC might not be operating optimally. This is because the evaporator coil will not be able to adequately dehumidify the space in need of cooling.

What effect does slowing down the blower speed have on a heating unit?

In heating, higher speed = (usually)more flow/lower temperature; lower speed = less flow, higher temperature. Depending on your local conditions, it is possible that heating and a/c can utilize the same blower speed. Too low a speed will cause freezing (no good)in a/c.

Does thermostat control fan speed?

Thermostats come with a fan setting so that you can manage the air circulation in your home. You can choose between the “On” and “Auto” settings, depending on your needs.

Is changing fan speed safe?

As long as the noise doesn’t bother you, yes it is fine. The colder the better. If you can stand the fans at 100% all the time you could even do that.

How do I increase the airflow on my furnace?

Should your furnace fan be on auto or on?

“auto” is the best setting for your furnace fan in the winter. It will aid in saving energy and money while also working to keep your home at an optimal temperature. However, for summer, “on” is the best setting for your furnace fan.

Does increasing fan speed affect?

No harm it may shorten their lifespan some, not enough to matter. If you want the system to run cooler.

How do I change the air filter in my Amana furnace?

Open or slide the door panel to get access to your Amana furnace. You will usually find the filter near where the cold air enters the unit, either in the cold air return duct or the entrance to the blower chamber (sometimes in both locations). Slide out the old air filter and replace it with a new one.

Why is my Amana furnace switching itself off and on?

Also, if you notice that your Amana furnace is continuously switching itself off and on, you may want to call a technician. This may be a sign that something is not circulating properly within your furnace, possibly tripping up the sensors.

How do I change the speed of my AC fan?

On most control boards there will be a jumper that is marked to show that it controls the speed. Most of these are on the bottom left of the control board. Then switch the jumper to your desired speed. Usually there will be three “speeds” ranging from 40 to 100% of airflow.

Do I need a furnace technician to troubleshoot my Amana unit?

While you can troubleshoot a number of issues on your own, you may want to contact a trained furnace technician should you be experiencing certain issues with your Amana unit.