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โก Power up your AC start like a proโno sweat, just torque!
The SPP6 Hard Start Capacitor Replacement by AMI PARTS is a high-quality, snap-in mount hard start kit designed to increase compressor starting torque by 500%. Compatible with a wide voltage range (115V to 288VAC) and AC units from 4,000 to 120,000 BTU, it offers an easy, cost-effective solution to prevent compressor failures and reduce service calls. Made from durable ABS material and backed by excellent customer support, itโs a top-rated choice for reliable HVAC performance.









| ASIN | B07X3RW5YY |
| Best Sellers Rank | #3,279 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #17 in Industrial Electrical Capacitors |
| Brand | AMI PARTS |
| Brand Name | AMI PARTS |
| Customer Reviews | 4.5 out of 5 stars 1,344 Reviews |
| Item Shape | Round |
| Manufacturer | AMI PARTS |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Material Type | Acrylonitrile Butadiene Styrene (ABS) |
| Maximum Voltage | 288 Volts |
| Model | SPP6 |
| Mounting Type | Snap-In Mount |
| Operating Voltage | 288 Volts |
| Part Number | SPP6 |
| Shape | Round |
| UPC | 740306408437 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 40 Degrees Celsius |
R**N
Good Price and Works Well
This hard start kit worked well for my AC unit and the price was very reasonable compared to other options. Installation was straightforward and the product feels solid for the cost. After installing it, the compressor started more smoothly and seemed to have better starting power.
K**P
Easy to install out of the box
Works great on older AC compressor/condensor units that benefit from that extra start torque this provides. Easy install.
A**R
Hard start kit
Work fine last long time. Easy to install.
T**Y
Good quality.
Good product, reasonable price.
C**S
Worked Perfectly
Worked as described, arrived quickly
J**K
Easy fix but get the multipack
***UPDATED REVIEW*** You will note that they sell this in a multi-pack. Get the multipack. First one worked great for 14 months...and then completely stopped working. Replaced the SPP6 and back in action. It really works great and does what my compressor needed, but you will save yourself some eventual heartache if you get the multi-pack. Original Review Below: My Florida Heat Pump (now owned by Bosch) compressor was failing to start when the system commanded it to start. It would hum for about 5 seconds and then time out. This cycle would repeat over and over, sometimes starting and sometimes the system seemed to quit trying (after about ten minutes and 50 or so failed starts of the compressor). Anyway, this piggy back capacitor is simply added in parallel to the existing capacitor and it works like a champ. Two things to note: (1) capacitors can zap you even when you've removed the 220Vac at the breaker...you must discharge the existing capacitor or you'll become the discharge path and that's gonna hurt... and (2) it's possible you just need to replace your existing capacitor and this boost is unnecessary. If your compressor is older and a capacitor swap didn't fix your problem, this is the easy button you were hoping for. As for how long this bandaid fix will last, I dunno, but, at the price of a new compressor, this thing will pay for itself in about a month or two.
G**T
Installation
Easy installation
N**T
Perfect fit
Awesome product
Trustpilot
2 days ago
2 weeks ago