---
product_id: 554627965
title: "ATMA SUPPLY CSR-U1 Hard Start Device Compressor Saver for 1- to 3-Ton AC Units"
brand: "atma supply"
price: "$538832"
currency: COP
in_stock: true
url: https://www.desertcart.co/products/554627965-atma-supply-csr-u1-hard-start-device-compressor-saver-1
store_origin: CO
region: Colombia
---

# Multi-layer capacitor for powerful start Reduces compressor start-up time & amps Simple 3-wire color-coded installation ATMA SUPPLY CSR-U1 Hard Start Device Compressor Saver for 1- to 3-Ton AC Units

**Brand:** atma supply
**Price:** $538832
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your AC startup — save energy, silence noise, and skip the wait!

## Quick Answers

- **What is this?** ATMA SUPPLY CSR-U1 Hard Start Device Compressor Saver for 1- to 3-Ton AC Units by atma supply
- **How much does it cost?** $538832 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/554627965-atma-supply-csr-u1-hard-start-device-compressor-saver-1)

## Best For

- atma supply enthusiasts

## Why This Product

- Trusted atma supply brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Cut Energy Costs & Noise:** Significantly lowers start-up amps, reducing energy consumption and annoying AC startup noise.
- • **Effortless DIY Installation:** Color-coded wiring and included screws make setup quick and hassle-free — no pro needed.
- • **Extend Your AC’s Lifespan:** Less strain on your compressor means longer-lasting performance and fewer costly repairs.
- • **Boost Your AC’s Startup Power:** Multi-layer capacitor delivers a reliable, high-torque compressor boost for faster, smoother starts.
- • **Universal Fit for 1-3 Ton Units:** Designed to work seamlessly with a wide range of residential AC compressors, ensuring broad compatibility.

## Overview

The ATMA SUPPLY CSR-U1 Hard Start Device is a compact, easy-to-install kit designed for 1-3 ton AC units. Featuring a powerful multi-layer starting capacitor and smart switch, it reduces compressor start-up time and electrical draw, cutting energy costs and noise while extending your AC’s lifespan. With simple color-coded wiring and included mounting hardware, it’s the perfect upgrade for any homeowner looking to optimize their cooling system’s efficiency and reliability.

## Description

ATMA SUPPLY CSR-U1 Hard Start Device Compressor Saver for 1- to 3-Ton AC Units

## Features

- This hard start kit works on 1-2-3 tons AC units, Package includes 1 x CSR-U1 Hard Start Capacitor Kit, 1 x Cable Ties, 2 x Screws
- The compression savor uses a powerful multi-layer starting capacitor and a smart switch to give your compressor the boost it needs to start up quickly, more reliably, draw less power and save you money
- The compressor saver significantly reduces the amount of time your compressor is on high amp start-up. Using a powerful multi-layer starting capacitor and a smart switch to give your compressor the boost it needs to start up quickly, more reliably, draw less power and save your money
- Easy to install-There are only 3 color coded wires which need to be connected, the black wire will be connected to the common side if the compressor, the stripped wire will be connected to the start winding of the compressor, and the red wire will be connected to the run winding of the compressor. Or you can look up for a YouTube video how to change the parts, it's not hard at all
- For any reason you are not completely satisfied, please feel free to contact with us

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | ATMA SUPPLY |
| Recommended Uses For Product | Tire Inflation |
| Power Source | electric |
| Special Feature | Built-In Gauge |
| Included Components | Mounting Screws |
| Capacity | 3 Tons |
| Colour | Black |
| Model Name | CSR U1 |
| Manufacturer | ATMA SUPPLY |
| Country of Origin | USA |
| Item model number | CSR-U1AS |
| Package Dimensions | 21.4 x 17 x 6 cm; 310 g |
| ASIN | B09J9Y1R39 |

## Product Details

- **Brand:** ATMA SUPPLY
- **Recommended Uses For Product:** Tire Inflation
- **Power Source:** electric
- **Special Feature:** Built-In Gauge
- **Included Components:** Mounting Screws
- **Capacity:** 3 Tons
- **Colour:** Black
- **Model Name:** CSR U1
- **Manufacturer:** ATMA SUPPLY

## Images

![ATMA SUPPLY CSR-U1 Hard Start Device Compressor Saver for 1- to 3-Ton AC Units - Image 1](https://m.media-amazon.com/images/I/71qZ1bYcnpL.jpg)

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-02-21*