⚡ Start Smart, Save Big — The Ultimate HVAC Power Boost!
The CSR-U2 Hard Start Kit by Wadoy is a high-performance HVAC accessory designed for 3.5 to 5 ton AC units. Featuring a robust 35-amp multi-layer capacitor and a smart relay, it accelerates compressor startup, reduces electrical strain, and lowers energy consumption. Pre-wired for quick installation, this kit extends equipment life while operating nearly silently at 1 dB, making it an essential upgrade for efficient, reliable air conditioning.
Brand | Wadoy |
Voltage | 240 Volts |
Recommended Uses For Product | Reduces the load on your compressor & Saves Electricity |
Power Source | Corded Electric |
Noise Level | 1 dB |
Special Feature | Hard Start Kit |
Included Components | Mounting Screws |
Item Weight | 0.4 Kilograms |
Maximum Power | 5 Horsepower |
Material | Plastic |
Style | Electric-Powered |
AC Adapter Current | 35 Amps |
Motor Horsepower | 5 Horsepower |
Model Name | CSR U2 |
Manufacturer | Wadoy |
UPC | 674043004198 |
Item Weight | 14 ounces |
Package Dimensions | 7.83 x 4.02 x 2.68 inches |
Item model number | CSR U2 |
Is Discontinued By Manufacturer | No |
Shape | Round |
Special Features | Hard Start Kit |
Batteries Included? | No |
Batteries Required? | No |
N**H
The extra push for my Generator
This is all I needed for my 12KW generator to start my 5-ton multi-stage air conditioner. Without it there was no chance. The 5-ton mismatch to the generator size is still a big stretch and it barely makes it but it works; which is what matters. Will weaken over time so I did need to replace it after about 5 years but that's money well spent and I couldn't ask for a longer performance period or such a low price point.
V**
Great hard start kit with zero time delay on repeat starting.
I like that you don’t have to wait on it if a temporary seized electric motor needs to try to be restarted immediately. Great value. Easy installation. Fast delivery and shipping. Great product!
C**H
Easy Install
Easy to install to replace A/C capacitor for fan. Capacitor for fan was completely did (it didn't even pop when shorted. It even comes with its own zip tie. I didn't think it was installed like that from the manufacturer, but when the replacement zip tie was included, it taught me something.
A**O
Don’t waste your time.
I had a licensed tech install this and it melted within minutes. Poor quality. It could have started a fire. It also damaged my AC so now I have to get it repaired.
F**Y
You get what you pay for.
It should work but as you can see, the contacts in the potentail Relay are not aligned properly.
L**L
AC Hard Start Capacitor for my 3.5 tons Rudd Unit
It's working good. It sounds good when it comes on & off. Note: the relay has an arrow that shows where up is. Rick left a 1 star review and his relay was side-way so it blew the start capacitor. Big no no!Update 5/31/23:On around 1/15/23 this hard start capacitor blew up (see pictures). We put the old parts back but unit was wasting more electricity than before and seem like it would good for the first 5 minutes then not put out like it should...I can't remember exactly but we ended replacing it with a mini split heat pump. So glad we did! BTW, don't buy this hard start capacitor.
D**N
Easy install
Very easy installation on the unit Follow the wiring diagram installed correctly inside the electrical component box
B**L
As advertised
Extremely easy to install and very quiet
Trustpilot
2 weeks ago
1 day ago