5 Pack TEMCo 340-408 uF Motor Start Capacitor - HVAC Replacement

In this review the focus is on a 5 pack of TEMCo 340-408 uF motor start capacitors intended for HVAC, compressor, and pump repairs. The bottom line: this kit is for technicians or DIYers who need a compact, cost-effective replacement for OEM single phase motor start capacitors and value straightforward compatibility and a UL rated, PCB-free construction. The single biggest reason to buy is the combination of correct start capacitance and broad voltage range that lets these units stand in for many common motor starts while saving significantly versus OEM parts.

Key Features

• Start capacitance: 340-408 uF provides the high surge storage needed to help single phase motors start reliably when matched to the motor's specifications.
• Voltage range: Rated 220-250 VAC and usable on 50/60 Hz systems, making these capacitors suitable for a wide range of residential and light commercial motors.
• Temperature tolerance: Operates from -40 C to +65 C, allowing installation in many HVAC and compressor environments with temperature swings.
• Construction: Electrolytic oil filled and PCB-free in a rugged phenolic resin case, offering safe, industry-standard packaging for motor start use.
• Terminals and size: 1/4' quick disconnect terminals and a compact 1.78 in diameter by 3.33 in height profile for easier retrofits into tight motor housings.
• Certification and warranty: UL rated E492933 and backed by a 5 year warranty for added peace of mind on replacements.

Who It's For

This 5 pack is best for HVAC technicians, repair shops, and experienced DIYers who regularly replace single phase motor start capacitors on compressors, pumps, and small motors and want a cost-effective bulk supply. The UL rating and PCB-free design make it appropriate where safety standards matter and the voltage and capacitance match the motor's requirements.

It is not ideal for users who require an exact physical match to unusually large OEM cans or those who cannot accept smaller physical dimensions; some customers reported the capacitor was physically smaller than the original. Also, anyone uncomfortable diagnosing motor start issues should consult a professional rather than attempting multiple replacements.

Pros & Cons

Pros

• Good value for money when replacing multiple motor start capacitors, especially compared to OEM pricing.
• Functionality and fit are reliable for many HVAC and compressor systems when the electrical specs match.
• UL rated and PCB-free construction reduces regulatory concerns in many installations.
• Compact size and quick disconnect terminals simplify installation in tight spaces.

Cons

• Some customers reported durability issues, including isolated failures; this risk means testing after installation is prudent.
• Physical size is smaller than some OEM parts, which may require adapters or extra clearance in a few applications.

Specifications

Capacitance	340-408 uF
Voltage	220-250 VAC
Frequency	50/60 Hz
Operating temperature	-40 C to +65 C (-40 F to +149 F)
Dimensions	1.78 in diameter, 3.33 in overall height
Terminals	1/4 in quick disconnect
Construction	Electrolytic oil filled, PCB-free, phenolic resin case

Our Verdict

For professionals and experienced DIYers who need multiple replacements, this 5 pack offers correct start capacitance, UL rating, and a compact form factor at a strong price point. It represents good value when the electrical specs match the motor, but buyers should be aware of occasional durability reports and the smaller physical size compared with some OEM cans.

Frequently Asked Questions

Are these capacitors PCB-free?
Yes, the units are explicitly PCB-free and use electrolytic oil filling in a phenolic resin case.

Will these fit my motor housing?
They measure 1.78 in diameter and 3.33 in height with 1/4 in quick disconnects, so confirm physical clearance against the OEM part before purchase.

Do they work on 50 Hz and 60 Hz systems?
Yes, they are rated for both 50/60 Hz and for 220-250 VAC operation.