Are furnace blower motors interchangeable?

If you can’t find an exact model number replacement an equal replacement will have to be found. Motor manufactures make universal blower motors that can be wired to run at a wide range of settings depending how they are wired. … Shaft size: Most furnace motors use a 1/2 inch but sometimes they can be different.

Can I put a bigger blower motor in my furnace?

Blower motor sizes cannot be interchanged. They are sized to things like the blower wheel the return and supply opening. If you have a direct drive blower where the motor lies within the blower wheel then you cannot install a physically larger motor but can install a greater hp rated one.

Do furnace blowers have different speeds?

Unlike conventional fan motors, a variable speed blower motor runs at different speeds to precisely control the flow of heated or cooled air throughout your home. Better airflow control means a better balance of temperature and humidity.

How much does it cost to replace a furnace blower motor?

On average nationwide, a furnace blower motor replacement costs $400-$600, including parts and labor. A single-speed blower motor costs around $450 to replace while a variable-speed motor costs $600+.

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Can you upgrade blower motor?

Yes, you can change your blower motor’s speed to try and improve your airflow if your blower motor is not already at the highest speed. On most blower motors the black wire is the high-speed wire.

Is it hard to replace a blower motor?

If you don’t want to sweat or shiver, then find a good mechanic. The replacement of the blower motor is common and straightforward, so most shops will perform the repair — many on the same day.

How can I make my blower motor faster?

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 blower motors get weak?

Weak airflow is a sign of blower motor failure. This part wears out eventually, meaning its fans can no longer push adequate amount of air out the vents or through window defrosters.

Is it worth upgrading to a variable speed furnace?

The best news … a variable speed furnace motor is 80–85% more efficient than a standard furnace motor. … If you don’t have a 90% efficiency or higher furnace in your home, then yes it may well be worth the cost to upgrade.

Is a variable speed blower furnace worth it?

A high-efficiency variable speed furnace can reduce your utility bills. … Higher rated furnaces save you money because they use less power while heating your house to the same temperature. Additionally, variable speed furnaces are more efficient than traditional models.

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How can I tell if my furnace blower motor is bad?

What Are Signs Your Blower Motor Needs to Be Replaced?

  1. Poor or Airflow from Air Vents. This will be the first and most obvious sign your blower motor has a problem. …
  2. No Airflow At All From Vents. …
  3. Skyrocketing Energy Bills. …
  4. Strange Noises When You Turn on the Heat. …
  5. Overheating Blower / Weird Smells.

How long do furnace blower motors last?

Even though the manufacturer states their blower motor will last two decades, we advise all clients to expect a 10-20-year life span due to age, use, and proactive maintenance.

How long does it take to replace a blower motor in a furnace?

It takes between 45 to 90 minutes for a HVAC specialist to: replace the blower motor, adjust it, clean the fan, test it and assemble the furnace back together. The biggest challenge if you’re doing it yourself is getting the assembly out.