--- product_id: 42420079 title: "PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R for Condenser Straight Cool or Heat Pump Air Conditioner - Guaranteed to Last 5 Years" brand: "powerwell" price: "S$31" currency: SGD in_stock: true reviews_count: 13 category: "Power Well" url: https://www.desertcart.sg/products/42420079-powerwell-45-5-mfd-45-5-uf-370-or-440 store_origin: SG region: Singapore --- # 45+5 µF dual capacitance 440V max operating voltage 5-year durability guarantee PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R for Condenser Straight Cool or Heat Pump Air Conditioner - Guaranteed to Last 5 Years **Brand:** powerwell **Price:** S$31 **Availability:** ✅ In Stock ## Summary > ⚡ Power your comfort with the capacitor that keeps your cool running longer! ## Quick Answers - **What is this?** PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R for Condenser Straight Cool or Heat Pump Air Conditioner - Guaranteed to Last 5 Years by powerwell - **How much does it cost?** S$31 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/42420079-powerwell-45-5-mfd-45-5-uf-370-or-440) ## Best For - powerwell enthusiasts ## Why This Product - Trusted powerwell brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Engineered to USA EIA-456-A & IEC 60252-1 standards with a 5-year guaranteed lifespan. - • **Dual Power Boost:** Supports both compressor & fan motors seamlessly with 45+5 µF capacity. - • **Snap-In Convenience:** Easy installation with snap-in mount design—get your HVAC back up fast and hassle-free. - • **Compact & Universal Fit:** 2.38" diameter x 4" height fits most round capacitor slots, replacing multiple part numbers. - • **Voltage-Proof Reliability:** Rated for 440V to outlast and outperform 370V alternatives without premature failure. ## Overview The PowerWell PW-45/5/R is a high-performance dual run capacitor designed for air conditioners and heat pumps, combining 45+5 µF capacitance with a robust 440V rating. Built to stringent USA and international standards, it guarantees reliable operation and longevity for up to 5 years. Its compact round design fits a wide range of HVAC units, replacing multiple OEM parts, and ensures easy snap-in installation. Trusted by thousands, it’s the smart upgrade for professionals who demand durability and efficiency. ## Description A capacitor is an electric component that temporarily stores an electrical charge. A dual "run capacitor" supports two electric motors, such as in large air conditioner or heat pump units, with both a fan motor and a compressor motor. It saves space by combining two physical capacitors into one case. The dual capacitor has three terminals labeled "C", "FAN", and "HERM", which stand for the *C*ommon, Fan, and *HERM*etically sealed compressor. Dual capacitors come in a variety of sizes, depending on the capacitance (µF or MFD), such as 40 plus 5 µF, and also the voltage. A 440 volt capacitor can be used in place of a 370 volt, as it is build better, but the 370 can’t be used in place of a 440 volt. It will work for a while and will fail prematurely, as exceeding the capacitor's rated voltage will cause the dielectric to break down and the capacitor to short out. Same as an electric wire- 600V rated wire is better than 300V one .The capacitance(µF or MFD) must be the same or stay within 10%+ or 5%- of its original value . Example: 50 µF cap can be substituted by 47.5 to 55 µF with the same or better voltage ratings capacitor . Round cylinder-shaped dual run capacitors are commonly used for air conditioning, to help in the starting of the compressor and the condenser fan motor.Round capacitor can be used to substitute oval shape one with the same MFD AND Volt specs You will ask “Why I need a Cap that is rated 440V in my A/C?” Answer: You need to realize that a motor is an inductive device. When the supply voltage is applied to the motor run winding, the voltage across the start winding will be increased to a higher voltage value. A motor acts like a transformer with the run winding acting as the primary and the start winding acting as the secondary. This is why the capacitor has a much higher voltage rating than the 230 being the supply voltage. If a Capacitor is not EIA-456-A approved means it is not approved for US market. Review: Good item and affordable - Right part and price, I will save this for later use. I need to fix my hvac on the day it was not working, I go to parts store near me and was charged double. Review: Worked for 9 years - I bought this thing 9 years ago and it only JUST went out. I’m about to buy another one. The repair guy said we needed a whole new unit, I popped this sucker in there and we’ve been good as gold! ## Features - 45+5 uf or 45+5 MFD 440 Volt AC Capacitor. Replaces BOTH 370 VAC & 440 VAC capacitors - Can size measures 2-3/8" diameter x 4" tall. Operating temperature range -40 C. to +70 C/ -40F to 158 - Built to the TOUGHEST USA standards for AC motor run capacitors including EIA-456-A and IEC 60252-1:2001 - GUARANTEED TO LAST 5 YEARS. We are extremely passionate about our products and are fanatical about quality control in our workshops. ORDER NOW with peace of mind. No Catches - Replacement for 97F9895 , Z97F995 , 97F9895BZ3 , 27L880 , TRCD455 , TRCFD455 , PRCFD455 , 27L889 , 97F9851 , 97F9851S , 12788 , RC0114 , Z97F9895 , 97F9895 , TT-CAP-45/5/440R , HC98KA046 , TP-CAP-45/5/440R , CAP050450440RT , HC98JA046 , HCKS450D050R440Z , 00662441180262 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01NAZJYWA | | Best Sellers Rank | #7,307 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #37 in Industrial Electrical Capacitors | | Brand | PowerWell | | Brand Name | PowerWell | | Capacitance | 45 microfarad | | Capacitance Tolerance | 5 | | Customer Reviews | 4.7 out of 5 stars 4,479 Reviews | | EU Spare Part Availability Duration | 5 years | | Item Dimensions W x H | 2.38"W x 4"H | | Item Shape | Round | | Manufacturer | PowerWell | | Material | Copper | | Material Type | Copper | | Maximum Storage Temperature | 75 °C | | Maximum Voltage | 440 volts | | Model | PW-45/5/R | | Mounting Type | Snap-In Mount | | Number of Items | 1 | | Operating Voltage | 440 volts | | Part Number | PW-45/5/R | | Shape | Round | | UPC | 714833366249 | | Unit Count | 1 Count | | Upper Temperature Rating | 70 °C | ## Product Details - **Brand:** PowerWell - **Capacitance:** 45 microfarad - **Material:** Copper - **Maximum Storage Temperature:** 75 °C - **Shape:** Round ## Images ![PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R for Condenser Straight Cool or Heat Pump Air Conditioner - Guaranteed to Last 5 Years - Image 1](https://m.media-amazon.com/images/I/61ScFsMvgjL.jpg) ## Questions & Answers **Q: All the numbers match on my existing one (440 vac, 50/60 hz, +-6%), except for mine has the number 40uf/5uf instead of 45/5 ... will this one work?** A: A 55 Micro Farad cap will most likely run fine in your unit.. Capacitors work like batteries on start-up of the motor where extra electrical energy assists the unit in overcoming the latency of the motor to start. Capacitors charge at different times depending on capacity. Typically it uses 5 time constants for a capacitor to charge and discharge. All this means that a small cap will charge faster than a large one but means little to the user if they are not using it as some part of a timing circuit. The Booster Supco Cap adds extra energy on startup so the unit gets that extra electrical push. This is a very simplified answer to a somewhat lengthy Study of CAPs in EE courses and how they are used and work. **Q: Where do I buy the wires to hook it up? I can't splice on the terminals myself** A: The wires are already on the condenser unit... If you have a separate capacitor for fan don't use that terminal or vice versa **Q: would this fit C3455R?Thanks** A: No. PowerWell 45+5 is 2 3/8” Genteq C3455R is 2” **Q: Dose it fit trane xl16i 4ttx6048?** A: If your your system issue is the compressor does not start once called and the fan does the you have a capacitor problem. Validate the capacitance in your system; 45uf for the compressor and 5uf for the fan then this product will work. The strap and connector is standard. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good item and affordable *by F***E on August 17, 2026* Right part and price, I will save this for later use. I need to fix my hvac on the day it was not working, I go to parts store near me and was charged double. ### ⭐⭐⭐⭐⭐ Worked for 9 years *by K***Y on August 6, 2026* I bought this thing 9 years ago and it only JUST went out. I’m about to buy another one. The repair guy said we needed a whole new unit, I popped this sucker in there and we’ve been good as gold! ### ⭐⭐⭐⭐⭐ Replace and save *by M***A on July 8, 2026* AC went down, ice on the evaporator and lines. Replaced the capacitor with this one, as all the numbers matched up. AC now running perfect. Pull the disconnect outside, remove the cover on the condensor (corner cover, not the whole thing) take a pic of where the wires connect, install new capacitor, reinstall the power disconnect and enjoy your cold house, knowing you saved yourself about 400 bucks. Good time to clean the evaporator and condensor! ## Frequently Bought Together - PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R for Condenser Straight Cool or Heat Pump Air Conditioner - Guaranteed to Last 5 Years - BOJACK 1 Poles FLA 30 Amp Coil 24 VAC Air Conditioner Condenser Compressor Contactor AC Definite Purpose Contactor - VEXUNGA AC Capacitor 45+5 uF 45/5 MFD 370 or 440 or 450 VAC CBB65B Dual Run Start Capacitors for Air Conditioner Compacitor Motor or Compressor Fan or Condenser Straight Cool --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/42420079-powerwell-45-5-mfd-45-5-uf-370-or-440](https://www.desertcart.sg/products/42420079-powerwell-45-5-mfd-45-5-uf-370-or-440) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-08-30*