
Discover the factors influencing air duct replacement costs in Boston, MA. Learn how to save money and make an informed decision for your home's comfort.
Heating and air conditioning service costs depend on your project and location. Check with a local pro for your specific job.
The average cost to replace an AC fan motor ranges from $100 to $700, although the cost may be lower if your unit is still under warranty.
Most companies charge an initial service fee (between $50 and $250) to diagnose the issue, which may not count toward your repair cost.
Off-brand parts could save you as much as 50%, but may not last as long as original equipment manufacturer (OEM) parts.
Emergency repairs add an additional $40 to $80 per hour to your labor costs.
AC units typically last 10 to 20 years, so if your unit is 15 years old or older, it’s likely worth replacing it instead
The cost to replace a fan motor on an AC unit is $500 for parts and labor, although prices can range from $60 to $1,200 depending on the quality of the unit, whether it’s under warranty, and when you schedule the replacement. Delaying this repair could cause your AC to overheat, leading to higher repair costs, so call a pro as soon as you notice something’s up.
Hiring a certified AC technician makes up 50% of the total AC unit fan motor replacement cost. Homeowners can expect to spend $50 to $250 for an initial service fee for a pro to diagnose the problem, plus $100 to $250 per hour for labor, with the replacement taking one to four hours.
Here’s what you can expect to spend for the replacement and related services:
Initial HVAC repair service fee: $50–$250
Part replacement: $60–$250
HVAC inspection: $70–$500
AC cleaning: $100–$400
When replacing the AC unit’s fan motor, you can choose one from the original equipment manufacturer (OEM) or an off-brand (non-OEM) part. OEM parts have several benefits, including maintaining your HVAC’s warranty and a guarantee that they work with your system. However, OEM parts do come at a higher cost.
Ask your HVAC pro if they carry OEM parts and what they’d recommend for your system. On average, you could pay 50% more for an OEM part. However, they often have longer life spans because of their proven compatibility with your system, so they’re worth the extra cost.

Aside from OEM parts and labor costs, the total price to replace an AC unit fan motor depends heavily on whether your unit is under warranty and if the repair is an emergency service or not. Here are some factors that can affect the project total.
Warranty coverage can mean the difference between paying less than $100 for a new AC unit fan motor and paying $700 or more for the same part.
| Warranty | Average Cost |
|---|---|
| Under warranty | $100–$300 |
| Out of warranty | $200–$700 |
Either the AC warranty, which lasts five to 10 years on average for individual parts, or your home warranty may cover the cost of an AC unit fan motor. A home warranty costs $230 to $1,900 per year, but it could save you money on household upkeep and repairs.
The more difficult it is to access your AC unit’s fan motor, the higher the cost to replace the motor will be. Most exterior AC units will be located near the house in an easily accessible space, but if you have shrubs growing around the units or other obstructions, you may need to pay up to $700.
It’s 92 degrees outside, you have guests coming for dinner, and suddenly, your AC stops working. If you need the AC unit fan replaced quickly or during off-hours, expect to spend an extra $40 to $80 per hour for labor, totaling around $190 to $330 per hour plus the cost of parts.
The blower, sometimes called a blower fan, is located on the inside unit and can also wear down over time. If you notice furnace problems like a lack of airflow in the house, it may be time to replace the blower. A new blower motor costs $560.
If the AC unit fan stops working and overheats the system, you may also need to replace a contactor. Replacing the AC contactor costs $150 to $350.
You should always hire an experienced AC installation pro near you to repair or replace the fan motor on your AC unit, given the specialized expertise and multiple dangers involved with the project.
Although the labor of a professional HVAC technician makes up roughly half the cost to replace an AC unit fan motor, you should absolutely hire a pro. Here’s why:
Working with an AC unit requires specialized expertise and knowledge that most homeowners do not have.
HVAC technicians can diagnose the problem more accurately and may be able to pinpoint other issues with your AC unit. In some cases, when there are multiple issues that average homeowners don’t notice, an HVAC tech may recommend a full replacement, which can save you money on repairs and help lower cooling costs.
AC installation pros carry liability insurance. If they cause damage during the fan motor replacement, you don’t have to pay for the fix. But if you make a mistake and break something while attempting the work, you’re on the hook for the cost.
Replacing the AC unit fan motor can actually be dangerous. It involves sharp blades and refrigerant, which should only be handled by pros.
Your AC unit may still be under warranty. Attempting repairs yourself could void the warranty. Read the agreement carefully and follow all guidelines for scheduling an inspection and repair work.
By working on your HVAC system or undergoing important repairs on your own, you could void your unit’s warranty or further damage the system. Leave HVAC repairs to the pros.

When your AC unit fan motor fails, you may consider whether to repair the part or replace it. A faulty fan motor can also make you consider whether to replace your air conditioner altogether. Consider the following factors when deciding whether to repair the fan motor, replace it, or install a new AC.
Warranty: If your AC unit is still under warranty, the warranty may cover the replacement cost for the fan, although you’ll still need to pay out of pocket for labor fees.
Part lifespan: An AC unit fan should last 10–15 years. If your motor breaks down sooner, have a pro determine if the part can be repaired before paying for a replacement.
AC system lifespan: An AC system lasts 10–20 years, so if your system is older, it may be better to replace it entirely when a part stops working.
50% rule: If your AC repairs, including replacing the fan, total more than 50% of the cost of a new system, it’s a better investment to upgrade your HVAC entirely.
When the AC fan motor wears out, it can be an unexpected hit to your wallet. But leaving it as-is while still running the AC can lead to costly energy bills or an overheated system that stops working when you need it. In fact, a worn-out motor can cause the compressor to overheat, and an AC compressor costs $800 to $2,300 to replace.
In order to budget for this repair, consider these tips to reduce AC unit fan motor costs:
Check the warranty: If your HVAC is under warranty or you have a home warranty, you may save on the cost of replacement parts.
Look for off-season deals: AC repairs are common in summer, so repair shops may offer deals when demand is lower in fall and winter. Get your HVAC serviced twice per year so that you can avoid peak-season emergency repairs.
Consider OEM parts: While non-OEM parts may cost less up front, they can void your warranty.
An HVAC system adds value to your home as long as it’s either new or in excellent working condition. By replacing the AC unit fan and keeping up with regular maintenance, your HVAC system could add 5% to 7% value to your home compared to if you had a poorly working system or no system at all.
Task your pro with a thorough inspection of the entire AC unit to determine if there are problems beyond the fan motor. Ask them to advise if it makes more sense to replace the part or, if you have an aging system, to replace the whole unit.
Ask your AC installer to walk you through easy maintenance tasks you can handle to ensure all components of your AC run smoothly and efficiently.
Discuss the right frequency of inspections and, if desired, schedule one with the HVAC tech now so you don’t forget.
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
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