--- product_id: 2408374 title: "Supco SPP5 Hard Start Kit, AC Compressor" brand: "supco" price: "€ 22.82" currency: EUR in_stock: true category: "Supco" url: https://www.desertcart.es/products/2408374-supco-spp5-hard-start-kit-ac-compressor store_origin: ES region: Spain --- # 300% boost in starting torque Plug-and-play across run capacitor terminals Installs in seconds Supco SPP5 Hard Start Kit, AC Compressor **Brand:** supco **Price:** € 22.82 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your AC start like a pro—no sweat, just cool vibes! ## Quick Answers - **What is this?** Supco SPP5 Hard Start Kit, AC Compressor by supco - **How much does it cost?** € 22.82 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/2408374-supco-spp5-hard-start-kit-ac-compressor) ## Best For - supco enthusiasts ## Why This Product - Trusted supco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual Power Boost:** Integrated relay and start capacitor work together for maximum torque and reliability. - • **Trusted HVAC Upgrade:** Highly rated with 4.5 stars from 146 users—join the pros who rely on Supco. - • **Effortless Installation:** Snap it on in seconds—no complex wiring or professional help needed. - • **Durable & Compact Design:** Built with sturdy plastic housing that fits seamlessly into your HVAC system. - • **Turbocharge Your AC Start:** Boosts compressor starting torque by up to 300%, ensuring faster, smoother startups. ## Overview The Supco SPP5 Hard Start Kit is a compact, easy-to-install accessory that increases your AC compressor's starting torque by up to 300%. Featuring a built-in relay and start capacitor, it ensures reliable, efficient startups and reduces strain on your HVAC system. Perfect for professionals and savvy homeowners looking to upgrade performance with minimal effort. ## Description The SUPCO hard start capacitor increases starting torque up to 300%. ## Features - Installs in seconds across run capacitor terminals - Contains relay and start capacitor for extra starting torque ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002YTLEU | | Best Sellers Rank | #411,118 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #308 in HVAC Controls | | Brand Name | Supco | | Customer Reviews | 4.5 4.5 out of 5 stars (146) | | Global Trade Identification Number | 00687152197354 | | Item Shape | Round | | Manufacturer | SUPCO | | Material Type | Plastic | | Model | SPP5 | | Part Number | SPP5 | | UPC | 687152197354 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Supco - **Manufacturer:** SUPCO - **Material:** Plastic - **Shape:** Round - **Unit Count:** 1.0 Count ## Images ![Supco SPP5 Hard Start Kit, AC Compressor - Image 1](https://m.media-amazon.com/images/I/61MCuGjgu9L.jpg) ## Questions & Answers **Q: How many micro-farads? what's the capacitance? Does it have a relay inside or do i need to buy one?** A: There is no mictofarad listing and there is no relay nor is one needed. You connect this in parallel with the run capacitor for an extra kick. This SPP5 can be installed on all Air conditioners between 4000 and 120,000 BTU. 90v-277v. I know that it is strange not having the capacitance listed. My air-conditioning unit documentation said it was compatible with SPP5 Which I thought was strange as well. Why would the air-conditioner company indicated that you might need a booster? I don’t know. Maybe it is very common. But it works fine. **Q: Is this compatible with lennox el16xc1-036 a/c 3 ton single phase** A: No, this is NOT Heavy Duty enough to a 3 ton 1 phase. U need a 'bigger' Cap, but I am not sure how big. Need some electricians advice here... **Q: does this connect to compressor or motor start capacitor? How to tell which is which?** A: It connects to the start capacitor. **Q: Using supco's univ. 3 in 1 electronic relay for 1/3,1/4 and 1/2 hp compressors. can't find anything for 3/4 hp. would this work and how would connect?** A: This unit is not heavy duty enough for larger than 1/2 hp. It wont handle the amps for larger motors. I have no idea regarding solutions for larger systems. Grainger.com carries heavier duty equipt., I'd call them. ## Frequently Bought Together - Supco SPP5 Hard Start Kit, AC Compressor - VEXUNGA 45/5 uF 45+5 MFD 370V or 440V Dual Run Start Round A/C Capacitor 45 5 uF 370 440 Volt VAC CBB65B Air Conditioner Capacitors for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool - SPP6 Hard Start Capacitor Replacement 115V Thru 288VAC Hard Start kit for air Conditioner Units from 4,000 to 120,000(1/2 Thru 10H.P.),Increases Compressor Torque 500% by AMI PARTS --- ## 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.es/products/2408374-supco-spp5-hard-start-kit-ac-compressor](https://www.desertcart.es/products/2408374-supco-spp5-hard-start-kit-ac-compressor) --- *Product available on Desertcart Spain* *Store origin: ES* *Last updated: 2026-07-08*