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⚡ Upgrade your AC’s heartbeat with power and precision!
This 45µF multi-purpose round capacitor is engineered for AC motor run and fan motor start applications, supporting both 370V and 440V systems. Built to rigorous USA standards with a wide operating temperature range (-40°C to 85°C) and ±5% capacitance tolerance, it delivers reliable, long-lasting performance for legacy and modern HVAC units alike.









| ASIN | B08YDVFJ9P |
| Best Sellers Rank | #9,311 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #32 in Industrial Electrical Capacitors |
| Brand Name | HVAC YELLOW HAT |
| Capacitance | 45 Microfarad |
| Capacitance Tolerance | 5 |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,067) |
| Item Dimensions W x H | 2.25"W x 4.5"H |
| Item Shape | Round |
| Manufacturer | HVAC YELLOW HAT |
| Material Type | Aluminum |
| Maximum Storage Temperature | 85 Degrees Celsius |
| Maximum Voltage | 440 Volts |
| Mounting Type | Wall Mount |
| Operating Voltage | 440 Volts |
| UPC | 750225127746 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 85 Degrees Celsius |
D**B
Very good quality product
Very good product, was easy to install and worked perfectly. Installed onto a 5 Ton Rheem unit about 10 yrs old.
J**.
Reliable Spec Part—Returned After Fan Upgrade, Still Worth Considering for Legacy AC Systems
During a recent AC compressor overhaul, I purchased this 5µF capacitor as part of a proactive component refresh. I also installed a **dual-run capacitor** rated for both the compressor and fan circuits, anticipating the need for a separate fan capacitor alongside the new condenser fan motor. The 5µF unit arrived quickly, packaged securely with no terminal damage. The aluminum housing was solid, terminals spaced well, and the labeling was clear—ideal for quick identification during install prep. However, the fan motor I ended up installing had a **built-in capacitor**, which meant I didn’t need this standalone part. Instead, I wired the motor directly into the dual-run capacitor using the standard C, FAN, and HERM terminal layout. This worked flawlessly and simplified the system wiring. That’s the key takeaway for buyers: newer fan motors often include internal capacitors, so before sourcing a separate one, check your motor’s spec label or wiring diagram. If your system uses an older motor, this 5µF capacitor appears reliable and well-suited for run/start support. Even though it was returned unused, the build quality and delivery experience made a positive impression. If I were working on a legacy unit again—or troubleshooting a standalone fan circuit—this would be on my shortlist
A**.
Works Well
Fixed my pool pump not starting issue by replacing the old capacitor with this one
D**.
Good Capacitors
Have bought this Yellow Hat brand several times now, never had one fail (yet). Just for the record, I own an actual Electric Motor Repair shop - so I am not buying these for the same motor every time. I use these on farm motors, and pool pumps - and yes AC motors too. Good product - good price!
A**W
Good part
Fast cheat and easy to install. Exactly what we needed.
M**N
Very satisfied that all. Good and thanks very much.
Good and thanks very much.
J**S
Worked as it should.
Worked perfectly and fit in the OEM space.
K**N
Perfect fit!
It was a perfect fit for my spa pump!
S**R
Perfectly working on my Carrier 4-ton Infinity Unit. Installed it yesterday. Hopefully it continues doing the job. Very pleased so far.
S**C
Buena calidad tiene aproximadamente 4 meses y a funcionado exelente lo recomiendo al 100%
S**X
Perfect capacitor for a portable air conditioner save a lot of cash!
D**D
so happy this fixed an old ac.
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