Easy
15-30 minutes
This is a Genuine Manufacturer Sourced replacement part designed for Nutone Exhaust Fans. This assembly includes a Motor, Plastic Impeller Wheel and a Metal Bracket.
When replacing this Assembly you would need a Screwdriver
• First you would need to remove the Plastic Cover/Grille
• Unplug the Power Unit
• Unscrew the Old Assembly and Slide it out
• Place power/blower unit into housing so that mounting plate's tabs insert into slots in housing
• Secure Mounting Bracket with Screws
• Connect the Power Unit and Attach Cover/Grille
Power Unit Assembly S0503B000
OEM part for: Nutone, Broan
Part Number: S0503B000
$89.67
In Stock
Ships within 1 business day 
Jump To:
Product Description ?
- Housing: 9
- Classification: Part
- Weight: 2.56 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This Power Unit Assembly will fit the following 6 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
This item works with the following types of products:
This part replaces obsolete part #: 0503B000
Customer Part Reviews ?
Average Rating (out of 5):
Click to filter by ratings:
5 stars
30
4 stars
3
3 stars
0
2 stars
0
1 stars
0
< PREV
- 1
- 2
- 3
easy repair
great part, and came in time
Guest -
August 1, 2023
Verified Purchase
Direct match for a burnt out unit.
A vent in my condo had a burnt out fan motor. I was able find to a direct match on this site. It arrived fast and was simple to swap out.
John -
January 3, 2023
Verified Purchase
perfect fit
Ordered a replacement motor fan for my shower fan. It arrived quickly, was the perfect replacement part, easy to install and my fan is working once again.
Guest -
November 24, 2022
Verified Purchase
Easy repair
The part came at the expected delivery time. Part in excellent working condition. Very happy with it!
Anonymous -
September 21, 2022
Verified Purchase
Easy Repair
Hardest part is reaching and installing screw. Plugging the power cord in first keeps the fan motor in place, so you can start screw.
Guest -
July 5, 2022
Verified Purchase
Excellent response to order, with quick delivery.
Fan & motor assembly was easy to install. Exactly what was needed. Thanks.
Guest -
May 31, 2022
Verified Purchase
Simple repair. Arrived quickly.
Part was perfect. Packaged well. Simple fix.
Caroline -
March 31, 2022
Verified Purchase
Easy Repairs
First, it was easy to find the parts I needed online. Parts arrived in a timely manner considering these days you expect the longest time possible. Parts installed as easy as the old ones came out and works like a charm.
Guest -
March 8, 2022
Verified Purchase
Easy fix
Replacement part was easy to install.
All back to normal.
Guest -
November 22, 2021
Verified Purchase
Parts I ordered went right in place.
Replacement fan and cover fit like a glove. Will use you again when I need parts. Thank you.
Guest -
November 16, 2021
Verified Purchase
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Power Unit Assembly
for this model could you recommend a compatible motor
Karl
for model number 769RL-201
asked on 2023-12-22
Hi Karl,
Thank you for your question. The part number for the motor is S87547000. We hope this helps!
eReplacementParts Team December 22, 2023
Will this work for NUVENT 503 B ?
Tony
for model number NUVENT B 503
asked on 2023-03-04
Hello Tony, thank you for asking. We have model Broan 503-B and the motor is part S99080355. Good luck and have a wonderful day.
eReplacementParts Team March 04, 2023
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
1) Dead Motor 2) Excessive noise
Henry - May 5, 2017
👍 5 of 5 people found this instruction helpful
Tool Type
Ventilation
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Nutdriver
Parts Used
1. Remove light lens
2. Remove light fixture(wingnut) & unplug
3. Remove vent plenum
4. Remove power unit mounting screw and unplug
5. Lower power unit.
6. Reverse to assemble.
I did this twice because I have two fan units(1 dead, 1 noisy)
2. Remove light fixture(wingnut) & unplug
3. Remove vent plenum
4. Remove power unit mounting screw and unplug
5. Lower power unit.
6. Reverse to assemble.
I did this twice because I have two fan units(1 dead, 1 noisy)
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Motor gave out
Herbert - April 25, 2017
👍 3 of 3 people found this instruction helpful
Tool Type
Ventilation
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Nutdriver
Parts Used
Replacement power unit fit perfectly. Pretty straight forward repair. Took the opportunity to vacuum out the vent.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
The motor unit was bad on bathroom exhaust fan.
RON - March 23, 2017
👍 3 of 3 people found this instruction helpful
Tool Type
Ventilation
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
One screw removal of old motor unit. Ordered new unit. Received new unit. One screw installation of unit. Place bulb in unit. Closed up unit.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Bathroom fan motor
William - July 18, 2016
👍 2 of 2 people found this instruction helpful
Tool Type
Ventilation
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
The shipped motor and impeller were already attached to a new mounting plate, which saved time. All that was required was sliding the plate into the housing slots and attaching one holding screw. It all went well.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Fan motor making noise
Marilyn - February 7, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Ventilation
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Removed grill and light.
Removed wing nut.
Unplugged light and fan.
Removed light assembly.
Removed Phillips screw.
Pulled fan assembly out.
Pushed in new fan assembly.
Inserted Phillips screw.
Pushed light assembly back in.
Replaced light.
Tighten wing nut back up.
Plugged light and fan in.
Snapped light cover back in place.
Removed wing nut.
Unplugged light and fan.
Removed light assembly.
Removed Phillips screw.
Pulled fan assembly out.
Pushed in new fan assembly.
Inserted Phillips screw.
Pushed light assembly back in.
Replaced light.
Tighten wing nut back up.
Plugged light and fan in.
Snapped light cover back in place.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Motor Stopped Working
Chester - September 14, 2018
Tool Type
Ventilation
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Nutdriver, Adjustable Wrench
Parts Used
Took entire fan assembly out. Installed new one ( was a perfect fit) and put fan housing back together. Probably could have just replaced motor but I didn't see it available. Cost for entire assembly reasonable considering alternative of tearing entire unit out of ceiling.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Original motor bearings locked up
Douglas - August 16, 2018
Tool Type
Ventilation
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Nutdriver
Parts Used
Removed old motor, along with mounting plate.
Opened package from ereplacementparts.com, discovered that new motor was ok, but new mounting plate was bent.
Removed bad motor from old mounting plate, transferred new motor onto old plate, installed in fan housing.
Opened package from ereplacementparts.com, discovered that new motor was ok, but new mounting plate was bent.
Removed bad motor from old mounting plate, transferred new motor onto old plate, installed in fan housing.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
The fan in the vent wouldn't work any more.
stefan - August 5, 2018
Tool Type
Ventilation
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
1. Removed the cover protecting the light bulb
2. Removed the light bulb
3. Removed the protective and decorative plates behind the light bulb (wing nut)
4. Unplugged the fan and the light fixture
5. Removed the screw holding the fan assembly in place
6. Installed the new fan assembly and secured it with the screw
7. Plugged in the fan and light fixture
8. Replaced the protective and decorative plates
9. Replaced the light bulb
10. Replaced the light bulb
11. Replaced the protective cover for the light bulb
2. Removed the light bulb
3. Removed the protective and decorative plates behind the light bulb (wing nut)
4. Unplugged the fan and the light fixture
5. Removed the screw holding the fan assembly in place
6. Installed the new fan assembly and secured it with the screw
7. Plugged in the fan and light fixture
8. Replaced the protective and decorative plates
9. Replaced the light bulb
10. Replaced the light bulb
11. Replaced the protective cover for the light bulb
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Fan stopped working
Kim - August 1, 2018
Tool Type
Ventilation
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set
Parts Used
Simple and intuitive replacement.
Remove light fixture to access motor.
Remove galvanized steel panel with old fan motor assembly.
Vacuum dust to clean area
Replace with new fan motor assembly
Replace existing light - was still working and able to be reused.
Remove light fixture to access motor.
Remove galvanized steel panel with old fan motor assembly.
Vacuum dust to clean area
Replace with new fan motor assembly
Replace existing light - was still working and able to be reused.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Fan was broken.
Marla - July 10, 2018
Tool Type
Ventilation
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Power Drill
Parts Used
Removed light that was attached with a wing nut. Disconnect switches then used my power drill to remove one metal screw, to remove broken fan. Simple
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Load More Install Stories
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
