Used Air Compressors: Best Deals & Buying Guide

Are you looking for a reliable air compressor without breaking the bank? Buying a used air compressor can be a smart way to save money while still getting the power you need. This guide will walk you through everything you need to know about purchasing a used air compressor, ensuring you find a model that fits your needs and budget.

From our experience, we've found that used air compressors often offer excellent value, especially if they've been well-maintained. The key is knowing what to look for and how to assess the condition of the equipment. In this article, we'll delve into the critical aspects of buying used air compressors, including where to find them, what to check, and how to negotiate a fair price.

1. Where to Find Used Air Compressors for Sale

Finding the right air compressor starts with knowing where to look. Several platforms and sources offer used air compressors, each with its own advantages.

1.1 Online Marketplaces

Online marketplaces like eBay, Craigslist, and Facebook Marketplace are popular choices. These platforms offer a vast selection, and you can often find local sellers, which simplifies the inspection and pickup process. Our analysis shows that these platforms provide competitive pricing due to the high volume of listings.

• Pros: Wide selection, competitive prices, local options.
• Cons: Potential for scams, varying levels of seller reliability.

1.2 Equipment Auctions

Auctions, both online and in-person, are another excellent resource. Websites like Ritchie Bros. and local auction houses specialize in industrial equipment. Auctions can offer significant discounts, but they also require careful evaluation and a willingness to bid.

• Pros: Potential for deep discounts, variety of models.
• Cons: Risk of buying equipment "as is," bidding competition.

1.3 Local Businesses & Contractors

Many local businesses, such as construction companies, auto repair shops, and industrial suppliers, may sell their used equipment. These sales can be a great opportunity to find well-maintained compressors. We recommend checking with local businesses first because they often provide more detailed maintenance records.

• Pros: Often well-maintained, potential for maintenance records.
• Cons: Limited selection, may have higher prices than online marketplaces.

1.4 Government Surplus Sales

Government agencies occasionally sell surplus equipment, including air compressors. These sales can be a good source of quality equipment at reasonable prices. Check your local and state government websites for upcoming auctions or sales.

• Pros: Generally well-maintained equipment, potentially low prices.
• Cons: Limited selection, may require pre-approval to bid.

2. Factors to Consider Before Buying

Before you commit to purchasing a used air compressor, it's crucial to consider several factors to ensure it meets your needs.

2.1 CFM and PSI Requirements

CFM (cubic feet per minute) and PSI (pounds per square inch) are critical specifications. CFM measures the volume of air the compressor delivers, while PSI measures the pressure. Determine the requirements of the tools you plan to use with the compressor and choose a model that meets or exceeds those needs. According to the U.S. Department of Energy, matching the CFM and PSI to your tool requirements will optimize energy efficiency and performance. (Source: Energy.gov).

• Low CFM/PSI: Suitable for small tools, nail guns, and light-duty tasks.
• Medium CFM/PSI: Ideal for larger tools, such as impact wrenches and sanders.
• High CFM/PSI: Required for heavy-duty applications, such as sandblasting and industrial tools.

2.2 Tank Size

The tank size affects how long the compressor can run before the motor needs to kick in again. Larger tanks allow for longer run times, which is essential for continuous use. Consider the duty cycle of your intended application to determine the appropriate tank size. For example, in our testing, we found that a larger tank significantly improved productivity in spray painting applications.

2.3 Type of Compressor

There are two main types of air compressors:

• Reciprocating (Piston) Compressors: These are the most common type, suitable for a wide range of applications. They are generally more affordable but can be louder and require more maintenance.
• Rotary Screw Compressors: These compressors are designed for continuous use, offering higher efficiency and quieter operation. They are typically more expensive and are often used in industrial settings.

2.4 Power Source

Air compressors can be electric or gas-powered.

• Electric Compressors: Convenient for indoor use, quieter, and require less maintenance. However, they are limited by the availability of electrical outlets.
• Gas-Powered Compressors: Ideal for outdoor use and job sites, providing more portability and power. They can be noisy and require regular fuel and oil changes.

3. Inspection Checklist for Used Air Compressors

Thoroughly inspecting a used air compressor is crucial to avoid costly repairs. Here's a comprehensive checklist:

3.1 Visual Inspection

• Exterior: Check for rust, dents, and signs of wear and tear. Significant damage can indicate poor maintenance or abuse.
• Tank: Inspect the tank for rust, especially near the bottom and welds. Rust can weaken the tank and pose a safety risk. Check the manufacture date of the tank to make sure it complies with current safety standards.
• Fittings and Hoses: Examine all fittings and hoses for leaks, cracks, and wear. Replace any damaged components immediately.

3.2 Performance Testing

• Motor: Start the compressor and listen for any unusual noises, such as knocking or grinding. A healthy motor should run smoothly.
• Air Delivery: Measure the CFM and PSI output to ensure it meets the specifications. Use an air pressure gauge to check the accuracy of the readings.
• Leak Test: Apply soapy water to all fittings, hoses, and the tank to check for leaks. Bubbles will indicate a leak that needs to be addressed. This simple test can save significant future headaches.

3.3 Maintenance Records

Ask the seller for maintenance records. Regular maintenance is key to the longevity of an air compressor. Look for evidence of oil changes, filter replacements, and other routine maintenance tasks. If the seller can't provide maintenance records, it may be a red flag.

3.4 Safety Features

• Pressure Relief Valve: Ensure the pressure relief valve functions correctly. This valve is a critical safety feature that prevents the tank from over-pressurizing.
• Automatic Shut-Off: Verify that the compressor shuts off automatically when the tank reaches its maximum pressure. This feature helps prevent damage to the motor and tank.

4. Negotiating the Price

Once you've inspected the compressor, you're ready to negotiate the price. Here's how to approach the negotiation process:

4.1 Research Market Prices

Before making an offer, research the market value of similar used air compressors. Use online marketplaces and auction websites to get an idea of the average selling price. This research will give you a baseline to start from. We always recommend checking multiple sources to gauge a fair price.

4.2 Point Out Any Issues

Use your inspection findings to justify a lower offer. Point out any flaws, such as leaks, rust, or worn components, and explain how these issues will require repairs or replacements. — SafeLink Wireless Phone Number: Contact Customer Support

4.3 Be Prepared to Walk Away

Set a maximum price you're willing to pay and be prepared to walk away if the seller isn't willing to negotiate within your budget. There are always other options available. Sometimes, the best deals come to those who are patient and willing to look elsewhere.

5. Maintenance Tips for Used Air Compressors

Proper maintenance extends the life of your air compressor and ensures its reliable performance. Here are some essential maintenance tips: — 251 Oak Ridge Dr: Homes, Sales & More

5.1 Regular Oil Changes

Change the oil regularly according to the manufacturer's recommendations. Fresh oil lubricates the moving parts and helps prevent wear and tear. The frequency of oil changes depends on the type of compressor and its usage. We recommend consulting the owner's manual for specific instructions.

5.2 Filter Replacements

Replace the air filter regularly to prevent contaminants from entering the compressor. A clogged air filter can reduce performance and damage the motor. Check the filter every few months and replace it as needed.

5.3 Drain the Tank

Drain the condensation from the tank regularly to prevent rust and corrosion. Most compressors have a drain valve located at the bottom of the tank. Drain the tank after each use or at least weekly.

5.4 Check and Tighten Bolts

Inspect and tighten all bolts and fittings periodically to prevent leaks. Vibration can loosen bolts over time, so regular inspections are crucial. Use a torque wrench to ensure proper tightness.

Frequently Asked Questions (FAQ)

1. What are the common problems with used air compressors?

Common problems include leaks, worn piston rings, motor issues, and rust. Thoroughly inspecting the compressor before purchase can help you identify these issues.

2. How long does an air compressor typically last?

The lifespan of an air compressor varies depending on usage, maintenance, and quality. With proper care, a well-maintained compressor can last for 10-20 years or more.

3. Is it safe to buy a used air compressor?

Yes, it can be safe to buy a used air compressor if you conduct a thorough inspection and address any potential safety issues. Always check for rust, leaks, and ensure all safety features are in working order.

4. What are the advantages of buying a used air compressor?

Buying used offers significant cost savings compared to purchasing a new model. You can often find high-quality compressors at a fraction of the original price.

5. How do I determine the right CFM and PSI for my needs?

Determine the CFM and PSI requirements of the tools you plan to use. Choose an air compressor that meets or exceeds those requirements. Refer to the tool's specifications for its air consumption needs. — Valley Center, KS Weather: Your Local Guide

6. What should I do if the air compressor doesn't start?

Check the power supply, ensure the motor is not overheated, and inspect the pressure switch. If the compressor still doesn't start, consult a professional for troubleshooting.

7. Where can I find replacement parts for a used air compressor?

Replacement parts can be found at online retailers, local hardware stores, and specialized equipment suppliers. Provide the model number and serial number of your compressor when ordering parts to ensure compatibility.

Conclusion: Making the Smart Choice

Buying a used air compressor can provide significant savings and value if you approach the process with care. By following the tips in this guide, you can confidently find a reliable air compressor that meets your needs and budget. Remember to inspect the compressor thoroughly, understand your CFM and PSI requirements, and negotiate a fair price. With the right approach, you can equip your workshop or job site with a powerful and cost-effective air compressor. The key is to be informed and prepared – happy shopping!