VEVOR 3.7HP Air Compressor Motor
4.3Editor score
3450 RPM single phase motor
230V 17.2 amp rating
56 frame with keyed shaft
10 Best 3.7 HP Compressor Motor (October 2026) Expert Guide
Finding the right motor for your air compressor is essential for reliable performance. A quality 3.7 HP motor ensures you have enough power for demanding tools without wasting energy or overloading your setup.
We compared ten top rated models based on power output, build quality, and customer feedback. Each product was evaluated for compatibility with common compressor setups to help you find a reliable replacement.
Each pick shows detailed specs and key features to guide your choice. Prices and availability can change quickly, so verify current details before purchasing to ensure the best deal and right fit.
Top 3 Picks for Best 3.7 HP Compressor Motor
Air Compressor Motor 3.7 HP Motor 56 Frame 5/8 Inch Shaft 230 V
5.0Editor score
High quality steel material build
Multiple cooling holes for heat
Compatible with air pumps fans
Air Compressor Electric Motor 3.7 HP 3450 RPM 230V Single Phase 56 Frame
5.0Editor score
60 Hz 230 volt power
CCW rotation with protection
Rolled steel shell housing
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Top 10 Best 3.7 HP Compressor Motor in 2026 Compared
This side by side comparison highlights key differences across all ten models. Focus on voltage amp ratings shaft size and rotation direction to match your existing compressor setup.
ProductsSpecificationsEditor scorePrice
Best Budget
VEVOR 3.7HP Air Compressor Motor
3.7 HP 3450 RPM
230V 17.2 Amps
56 Frame 5/8 shaft
Open Drip-proof enclosure
4.3Editor score
Editor's Choice
Air Compressor Motor 3.7 HP Motor 56 Frame 5/8 Inch Shaft 230 V
3.7 HP operating power
3450 RPM maximum speed
5/8 inch shaft diameter
Steel material construction
5.0Editor score
Best Premium
Air Compressor Electric Motor, 3.7 HP 3450 RPM, 230V Single Phase, 56 Frame 5/8" Keyed Shaft 60 Hz, Commercial-Duty CCW Rotation, 1.88 Shaft Length for Air Compressors
3.7 HP 60 Hz
230V 17.2 Amps
CCW rotation 56 Frame
Rolled steel shell
5.0Editor score
NEW 3.7 HP Compressor Duty Electric Motor, 3450 RPM, 56 Frame, 5/8" Shaft Diameter, 17.2 FLA at 230 VOLT
3.7 HP 230 Volt
56 Frame 3450 RPM
17.2 FLA at 230V
CCW rotation shaft end
3.9Editor score
3.7 HP Air Compressor Motor 56 Frame Single Phase 3450RPM 230V ODP
3.7 HP 3450 RPM
230V 17.2 Amps
56 Frame ODP Enclosure
Class F insulation system
3.9Editor score
NEW 3.7HP COMPRESSOR DUTY ELECTRIC MOTOR, 56 FRAME, 3450 RPM, 5/8" SHAFT DIAMETER, NEMA RATED MOTOR, REPLACES 5HP SPL MOTORS RATED 15-17AMPS
3.7 HP 1 Phase
NEMA rated 60 Hz
1.0 Service Factor
Non reversible CCW shaft
4.6Editor score
3.7 HP 3450 RPM, 56 Frame, 230V, 17.2Amp, 5/8" Shaft, Single Phase NEMA Air Compressor Motor
3.7 HP 230 Volts
17.2Amp 56 Frame
Manual Reset Overload Protection
Non reversible CCW rotation
4.3Editor score
3.7 HP 3450 RPM, 56 Frame, 230V, 17.2Amp, 5/8" Shaft, Single Phase NEMA Air Compressor Motor – EM-04
3.7 HP 3450 RPM
230V 17.2 Amps
56 Frame 5/8 shaft
Non Reversible CCW Only
4.5Editor score
Kunray 3.7HP Air Compressor Motor, 3450RPM Electric Motor, 230V 17.2 Amps Single Phase Motor, 5/8" Keyed Shaft 56 Frame, 1.88" Shaft Length, CCW/CW Rotation
3.7 HP 60 Hz
230V 17.2 Amps
56 Frame 5/8 shaft
CCW CW dual rotation
3.7 HP Air Compressor Motor 3450RPM 230V Single Phase Motor 56 Frame ODP
3.7 HP 2 Pole
230V 17.2 Amps
56 Frame 60 Hz
CCW rotation protection
4.0Editor score
1. VEVOR 3.7HP Air Compressor Motor – Best Budget Compressor Motor
VEVOR 3.7HP Air Compressor Motor
3.7 HP 3450 RPM
230V 17.2 Amps
56 Frame 5/8 shaft
Open Drip-proof enclosure
This VEVOR motor delivers 3.7 horsepower at 3450 RPM for reliable air compression. It earned a 4.3 rating for its balance of performance and affordability. The steel shell and CSA certification ensure safe daily use.
Pros
- Affordable pricing for power
- Durable steel shell
- Fast heat dissipation
- Reversible rotation options
- CSA certified safety
Cons
- Open drip proof limits use
- Not for wet areas
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Its high quality steel material protects the engine for a longer service life. The dual rotation direction makes wiring easier. A rolled steel shell helps dissipate heat quickly during operation.
The open drip proof design means it works best in clean dry environments. While it lacks full sealing, the heat sinks help manage temperature. This trade-off supports a lower price.
Ideal for workshop users needing a dependable upgrade without high costs. Buy this if you prioritize value and have a controlled indoor space.
Safe and Durable Design
The rolled steel shell protects the engine from damage and ensures long life. CSA certification confirms it meets rigorous safety standards.
Dual Rotation Direction
This motor is reversible for clockwise and counter clockwise rotation. It provides easier wiring operations for your setup.
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2. Air Compressor Motor 3.7 HP Motor 56 Frame 5/8 Inch Shaft 230 V – Top Rated Compressor Motor
Air Compressor Motor 3.7 HP Motor 56 Frame 5/8 Inch Shaft 230 V
3.7 HP 3450 RPM
230V 17.2 Amps
56 Frame 5/8 shaft
Steel material construction
This motor achieved a perfect 5.0 rating for its consistent reliability. It runs at 3.7 HP and 3450 RPM with 56 frame. The steel material ensures high strength and long service life.
Pros
- Perfect 5.0 rating
- High quality steel build
- Multiple cooling holes
- Wide application support
- Long service life
Cons
- Standard 230V only
- No reverse rotation noted
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Multiple cooling holes on the motor allow rapid heat dissipation during use. It is suitable for air compressors pumps and other machinery. The package includes one motor ready for install.
Its strong build supports demanding tasks but it requires proper ventilation. Users praise its simplicity and steady performance over time. The cooling design keeps it safe.
A great choice for those needing a top rated replacement. Pick this model for high customer satisfaction and durability.
High Quality Material
The motor is made of high quality steel material with high strength. It ensures long service life for your equipment.
Multiple Cooling Holes
This feature enables rapid heat dissipation. It keeps the motor safe during prolonged use.
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3. Air Compressor Electric Motor – Premium Commercial Duty Compressor Motor
Air Compressor Electric Motor, 3.7 HP 3450 RPM, 230V Single Phase, 56 Frame 5/8" Keyed Shaft 60 Hz, Commercial-Duty CCW Rotation, 1.88 Shaft Length for Air Compressors
3.7 HP 60 Hz
230V 17.2 Amps
CCW rotation 56 Frame
Rolled steel shell
This commercial duty motor earned a 5.0 rating for robust performance. It provides 3.7 HP at 3450 RPM with CCW rotation. The rolled steel shell offers safe and durable long service life.
Pros
- Commercial duty protection
- High working efficiency
- Compact structure
- Rolled steel housing
- S1 continuous working
Cons
- Only CCW rotation
- Requires dry environment
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It runs at maximum speed with high working efficiency. Lots of heat sinks help manage temperature. The compact structure is designed for air compressor tax purposes.
Its S1 continuous working system allows extended operation. The ODP enclosure means use it in clean dry areas. Users note its reliable protection.
Best for professional setups needing a powerful efficient motor. Buy this for commercial grade reliability.
High Working Efficiency
The compact structure allows high working efficiency. It runs at maximum speed with many heat sinks.
Safe and Durable
Rolled steel shell and continuous working system ensure safety. It offers long service life for daily use.
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4. NEW 3.7 HP Compressor Duty Electric Motor – Solid Replacement Compressor Motor
NEW 3.7 HP Compressor Duty Electric Motor, 3450 RPM, 56 Frame, 5/8" Shaft Diameter, 17.2 FLA at 230 VOLT
3.7 HP 3450 RPM
230V 17.2 FLA
56 Frame 5/8 shaft
CCW rotation
This motor provides 3.7 HP at 3450 RPM with 56 frame. It has a 3.9 rating reflecting varied user experience. The design replaces 5HP SPL motors rated at 15-17 FLA.
Pros
- Replaces 5HP SPL motors
- Capacitor start and run
- Continuous duty
- 17.2 FLA rating
- Standard 56 frame
Cons
- Mixed user feedback
- 230V only
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It uses capacitor start and run for continuous duty. The 17.2 FLA at 230V ensures sufficient power. Note it is not suited for 208V incoming.
Some users find installation straightforward. The CCW rotation must match your compressor. It offers a standard upgrade path.
Consider this if you need a direct replacement. Verify your voltage and rotation needs first.
Motor Replacement
This motor replaces 5HP SPL motors rated 15-17 FLA. It fits standard compressor setups.
Continuous Duty Rating
It offers capacitor start and run for continuous duty. Ensure your voltage matches 230V.
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5. 3.7 HP Air Compressor Motor 56 Frame – Reliable ODP Compressor Motor
3.7 HP Air Compressor Motor 56 Frame Single Phase 3450RPM 230V ODP
3.7 HP 3450 RPM
230V 17.2 Amps
56 Frame ODP Enclosure
Class F insulation
This motor runs at 3.7 HP with 3450 RPM in a 56 frame. It earned a 3.9 rating for consistent ODP performance. The steel housing supports safe and durable long service life.
Pros
- ODP enclosure type
- High working efficiency
- Compact structure
- Steel housing material
- Widely applicable
Cons
- Lower rating than others
- Dry environment required
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Its compact structure offers high working efficiency. Heat sinks help manage temperature. It is equipped with protector for air compressor tax purposes.
Users note it works well in clean dry environments. The ODP enclosure is key for maintenance. It is a standard option.
Select this for standard compressor needs. Ensure your area matches ODP requirements.
High Working Efficiency
The compact structure ensures high working efficiency. It manages heat with many heat sinks.
Widely Application
It has protector for air compressor tax purposes. Purchase based on specific compressor requirements.
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6. NEW 3.7HP COMPRESSOR DUTY ELECTRIC MOTOR – Strong Replacement Compressor Motor
NEW 3.7HP COMPRESSOR DUTY ELECTRIC MOTOR, 56 FRAME, 3450 RPM, 5/8" SHAFT DIAMETER, NEMA RATED MOTOR, REPLACES 5HP SPL MOTORS RATED 15-17AMPS
3.7 HP 1 Phase
NEMA rated 60 Hz
1.0 Service Factor
Non reversible CCW shaft
This motor received a 4.6 rating for quality and performance. It delivers 3.7 HP at 3450 RPM in a 56 frame. It replaces 5HP SPL motors rated between 15-17 FLA.
Pros
- High 4.6 rating
- Replaces 5HP SPL motors
- NEMA rated
- 1.0 Service Factor
- Wiring info on plate
Cons
- Non reversible shaft
- Professional install needed
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It is NEMA rated with 1.0 Service Factor. Professional installation is required. The wiring info is shown on the nameplate.
Users confirm it fits many compressors. Note the shaft is non reversible. Verify your setup carefully.
Ideal for those needing a compliant replacement. Check shaft direction before purchase.
NEMA Rated Motor
This motor is NEMA rated for reliability. Professional installation is required for safety.
Replaces 5HP SPL Motors
It replaces 5HP SPL motors rated 15-17 AMPS. Ensure your motor matches these ratings.
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7. 3.7 HP 3450 RPM 56 Frame 230V 17.2Amp – Reliable NEMA Compressor Motor
3.7 HP 3450 RPM, 56 Frame, 230V, 17.2Amp, 5/8" Shaft, Single Phase NEMA Air Compressor Motor
3.7 HP 230 Volts
17.2Amp 56 Frame
Manual Reset Overload Protection
Non reversible CCW rotation
This motor earned a 4.3 rating for reliable performance. It runs at 3.7 HP and 3450 RPM with ODP enclosure. It features Manual Reset Overload Protection and thermal protection.
Pros
- Manual Reset Overload Protection
- NEMA rated
- Thermally protected
- 4.3 rating
- Standard 56 frame
Cons
- Non reversible rotation
- O DP enclosure limits
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It is single phase at 230 Volts. The 17.2Amp rating ensures power. Non reversible CCW rotation is standard.
Users appreciate the manual reset feature. Ensure your setup matches rotation. It offers solid safety.
Choose this for a safe compliant motor. Check rotation direction before buying.
Manual Reset Overload Protection
This motor includes manual reset overload protection. It adds a layer of safety.
Thermal Protection
It is thermally protected for long use. This helps prevent overheating damage.
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8. 3.7 HP 3450 RPM 56 Frame 230V 17.2Amp – EM-04 NEMA Compressor Motor
3.7 HP 3450 RPM, 56 Frame, 230V, 17.2Amp, 5/8" Shaft, Single Phase NEMA Air Compressor Motor – EM-04
3.7 HP 3450 RPM
230V 17.2 Amps
56 Frame 5/8 shaft
Non Reversible CCW Only
This EM-04 model achieved a 4.5 rating for reliability. It provides 3.7 HP at 3450 RPM with ODP enclosure. It is NEMA rated with 17.2 Amps full load.
Pros
- 4.5 rating
- NEMA rated
- Standard 56 frame
- 17.2 Amps
- Open dripproof
Cons
- Non reversible rotation
- O DP limits
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It has a 56 Frame 5/8 shaft length. Non reversible CCW rotation ensures stability. Users find it dependable.
Its open dripproof design suits dry areas. Confirm your compressor rotation. It offers standard power.
A solid option for typical air compressors. Ensure rotation matches before purchase.
NEMA Rated
This motor is NEMA rated for quality. It meets industry standards for safety.
Open Dripproof
The enclosure is open dripproof. Use it in clean dry environments.
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9. Kunray 3.7HP Air Compressor Motor – Flexible Reversible Compressor Motor
Kunray 3.7HP Air Compressor Motor, 3450RPM Electric Motor, 230V 17.2 Amps Single Phase Motor, 5/8" Keyed Shaft 56 Frame, 1.88" Shaft Length, CCW/CW Rotation
3.7 HP 60 Hz
230V 17.2 Amps
56 Frame 5/8 shaft
CCW CW dual rotation
This Kunray motor offers flexible CCW/CW dual rotation. It runs at 3.7 HP and 3450 RPM with 60 Hz. It uses compact structure for high efficiency and heat dissipation.
Pros
- Reversible rotation
- Compact structure
- Class F insulation
- S1 continuous duty
- Built-in protector
Cons
- No rating data
- Newer brand
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It includes built-in protector and thermal safety. Class F insulation and S1 continuous duty ensure extended life. This design supports various setups.
Users note its reversible capability helps installation. Ensure shaft matches. It is a newer option.
Good for flexible wiring needs. Check compatibility with your compressor.
High Efficiency Design
Compact structure allows high efficiency. It features heat dissipation fins.
Reversible Rotation
This motor has CCW/CW dual rotation. Includes built-in protector for safety.
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10. 3.7 HP Air Compressor Motor 3450RPM – ODP Compressor Motor
3.7 HP Air Compressor Motor 3450RPM 230V Single Phase Motor 56 Frame ODP
3.7 HP 60 Hz
230V 17.2 Amps
56 Frame ODP Enclosure
CCW rotation protection
This motor earned a 4.0 rating for standard ODP performance. It delivers 3.7 HP at 3450 RPM with 230V power. The rolled steel shell offers safe durable long service life.
Pros
- Standard 56 frame
- High working efficiency
- Rolled steel shell
- 4.0 rating
- Continuous working
Cons
- O DP enclosure
- Specific rotation
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It features high working efficiency. Lots of heat sinks manage heat. Equipped with protector for compressor tax purposes.
Users confirm it works in dry environments. Verify your compressor specs. It is a common choice.
Select for standard compressor needs. Ensure your space is clean.
High Working Efficiency
The compact structure ensures high working efficiency. It manages heat with many sinks.
Protector and Application
Equip with protector for air compressor tax purposes. Purchase according to specific compressor requirements.
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Buying Guide – How to Choose the Best 3.7 HP Compressor Motor
Choosing the right motor requires matching key specs to your compressor. Consider these factors for a safe efficient upgrade.
Horsepower and RPM
Ensure the motor provides 3.7 HP at 3450 RPM to match your compressor demand. Mismatched power can lead to inefficiency or damage.
Choose a motor with HP and RPM matching your current specs.
Voltage and Amps
Check that the voltage is 230V and amps are 17.2 to match your electrical system. Incorrect voltage can cause motor failure.
Match voltage and amp ratings with your compressor and wiring.
Frame and Shaft Size
A 56 Frame with 5/8 shaft ensures compatibility with standard mounts. Verify shaft length and key to fit your setup.
Confirm frame size and shaft dimensions match your compressor.
Rotation Direction
CCW or CW rotation must match your compressor to drive the pump correctly. Non reversible motors need verification.
Ensure the rotation direction matches your compressor.
Enclosure Type
ODP enclosure suits dry clean environments. If you work in dusty or wet spaces, consider a sealed motor.
Choose ODP only for dry clean areas.
Safety and Protection
Look for CSA certification thermal protection and overload reset. These features extend motor life and ensure safe use.
Choose motors with proven safety features.
Material and Build
Rolled steel shells and Class F insulation ensure durability and heat resistance. Strong builds reduce failure rates.
Prioritize steel shell and Class F insulation.
Brand and Support
Choose brands with good ratings and support for parts. Reliable sellers help with warranty issues.
Select a brand with strong support.
How to Use and Care for Your 3.7 HP Compressor Motor
Install the motor on a stable mount aligning the shaft with the pump. Use a skilled electrician to connect power safely.
Keep the motor dry clean by wiping dust from cooling holes regularly. This ensures heat dissipation stays effective.
Check for unusual vibrations or heat during use. Address issues early and replace worn parts promptly.
Frequently Asked Questions
Can I use a 3.7 HP motor for a 5 HP compressor?
A 3.7 HP motor can replace a 5 HP SPL motor rated for 15-17 FLA. Check FLA ratings and match your setup to ensure proper performance without overloading the new motor.
What does ODP mean for this motor?
ODP stands for Open Drip-proof. It means the motor is designed for clean dry environments. Avoid using it in wet or dusty areas to prevent damage and ensure safety.
How do I know the correct shaft size?
Most models use a 5/8 inch shaft with 1.88 inch length. Compare your old motor specs or your compressor manual to confirm the correct shaft before buying.
What is the difference between CCW and CW?
CCW is counter clockwise rotation when viewed from the shaft end. CW is clockwise. Ensure the rotation matches your compressor direction to drive the pump effectively.
Do I need a professional to install this motor?
Professional installation is recommended for wiring and mounting. It ensures safety and compliance with electrical codes especially for 230V connections.
Can I reverse the rotation of these motors?
Some models offer dual rotation, others are non reversible. Check the product specs. Reversible motors allow flexible installation without rewiring.
What warranty do these motors have?
Warranty varies by brand and seller. Verify details at purchase. Look for support from reliable vendors for future parts or issues.
How long do these motors last?
With proper care in dry environments, they last several years. Regular maintenance like cooling checks extends service life for daily use.
Final Thoughts on Choosing the Best 3.7 HP Compressor Motor
Our top picks cover best budget, editor choice, and premium needs. The VEVOR model offers value while the premium model delivers robust performance for pro use.
Prioritize voltage, rotation and frame to match your compressor. Ensure your environment suits ODP and consider safety features for longevity.
Prices change so check current Amazon details before buying. Verify specs match your setup for a smooth reliable upgrade.