Learn how to build your own DIY kegerator with this comprehensive step-by-step guide. Transform a standard refrigerator into a professional-quality draft system at a fraction of the cost of commercial units. From selecting the right refrigerator to troubleshooting common issues, this article covers everything you need to create a custom kegerator perfectly suited to your space and beer serving needs. Start enjoying fresh draft beer at home with this cost-effective, satisfying project.
Few things compare to enjoying a fresh, cold draft beer in the comfort of your own home. While commercial kegerators offer convenience, building your own DIY kegerator provides a perfect blend of cost savings, customization options, and the satisfaction of creating something with your own hands. Whether you’re a homebrewer looking to showcase your creations or simply a craft beer enthusiast, a custom kegerator is an attainable project that will enhance your beer drinking experience for years to come.
In this comprehensive guide, I’ll walk you through the entire process of building a DIY kegerator from selecting the right refrigerator to troubleshooting common issues. By following these steps, you’ll create a professional-quality draft system at a fraction of the price of commercial units.
Why Build a DIY Kegerator?
Before diving into the building process, let’s consider why a DIY kegerator makes sense:
Cost Savings: A quality commercial kegerator can cost $800-1,500, while a DIY version typically runs $250-500, depending on your component choices and whether you find a used refrigerator.
Customization: Building your own system allows complete control over tap configuration, aesthetics, and features like temperature controllers or multiple gas lines.
Learning Experience: The project teaches valuable skills in refrigeration basics, woodworking, and draft system mechanics.
Expandability: DIY systems can be easily modified or upgraded as your needs change or budget allows.
According to Mark Kegman, draft system specialist at Brew My Beer, “The satisfaction of pouring your first pint from a kegerator you built yourself is unmatched. Beyond the initial pride, you’ll understand how every component works, making troubleshooting and maintenance much simpler down the road.”
Essential Components for Your DIY Kegerator
Before starting your build, gather these essential components:
| Component | Purpose | Approximate Cost |
|---|---|---|
| Refrigerator/Freezer | Base unit for conversion | $0-200 (used) |
| Conversion Kit | Contains CO₂ regulator, tap, lines | $80-150 |
| Drip Tray | Catches spills | $15-60 |
| CO₂ Tank | Provides gas for dispensing | $60-80 (empty) |
| Keg | Holds the beer | Varies by size and type |
| Drilling Tools | For creating tap holes | $20-40 if needed |
| Optional Components | Temperature controller, tower, etc. | Varies |
The American Homebrewers Association survey data shows that over 60% of homebrewers consider building a kegerator their most rewarding DIY project, with potential savings averaging $400 compared to commercial units.
Selecting the Right Refrigerator for Conversion
The foundation of any DIY kegerator is the refrigerator itself. You have several options:
Refrigerator Types Comparison
| Type | Pros | Cons | Keg Capacity |
|---|---|---|---|
| Mini-Fridge | Affordable, compact footprint | Limited space, often requires freezer removal | Usually 1 Corny or 1/6 barrel |
| Full-Size Refrigerator | Generous space, separate freezer | Larger footprint, more expensive to operate | 2-4 kegs depending on model |
| Chest Freezer | Most efficient, largest capacity | Requires temp controller, top access only | 4-8 kegs depending on size |
| Upright Freezer | Good capacity, front access | Requires temp controller | 2-4 kegs typically |
When selecting a refrigerator, prioritize these factors:
- Internal dimensions: Measure to ensure your keg style will fit with room for CO₂ tank and lines
- Freezer compartment location: Models with removable freezers are ideal for mini-fridges
- Condition of cooling system: Ensure it reaches and maintains proper temperature
- Door configuration: Solid construction for mounting taps (if using door mount)
- Energy efficiency: Newer models use less electricity despite higher upfront cost
Tyler Yeastman, fermentation specialist, recommends: “Always check inside wall locations before drilling. Many refrigerators hide coolant lines in unexpected places, and puncturing one ruins the unit. A simple magnetic stud finder can detect these metal lines.”
Step-by-Step Build Process
Now let’s break down the build process into manageable steps:
1. Prepare Your Refrigerator
Begin by thoroughly cleaning your refrigerator and ensuring it functions properly.
For mini-fridges with freezer compartments:
- Carefully remove the freezer compartment if it intrudes on keg space
- IMPORTANT: The cooling coils are often located in the freezer walls – DO NOT CUT THESE
- Many modern mini-fridges have cooling lines in the freezer plate that cannot be removed
- Research your specific model or look for “kegerator-friendly” mini-fridges
For full-size refrigerators:
- Remove shelving and drawers
- Keep door shelving if compatible with your design
- Consider removing the freezer divider wall for maximum space (advanced modification)
For chest or upright freezers:
- Install an external temperature controller (see section below)
- Remove any interior baskets or dividers
According to a study published in the Journal of the Institute of Brewing, the ideal serving temperature for most craft beers is between 38-44°F (3-7°C), so ensure your unit can maintain this range.
2. Install the Temperature Controller (For Freezer Conversions)
If using a freezer, you’ll need an external temperature controller since freezers naturally run too cold for beer storage.
Simple installation process:
- Plug the temperature controller into the wall outlet
- Plug the freezer into the controller
- Place the temperature probe inside the freezer (some models tape to the side, others use a bottle of water for slower response)
- Set your desired temperature (typically 38°F/3.3°C)
- Allow 24 hours for temperature to stabilize before proceeding
The National Homebrewers Conference technical sessions recommend digital temperature controllers with +/- 1°F precision for optimal beer serving conditions.
3. Determine Tap Placement and Configuration
Before drilling any holes, plan your tap configuration carefully:
Door-mounted taps:
- Most straightforward for beginners
- Keep taps at least 2″ from edges and each other
- Verify door construction is suitable for supporting tap hardware
- Consider door insulation thickness
Tower-mounted taps:
- More professional appearance
- Requires larger single hole in top
- Additional insulation needed to prevent warm beer in tower
- Multiple tap towers available for expanded systems
Collar-mounted taps (for chest freezers):
- Wooden collar between freezer and lid
- Preserves freezer integrity
- Allows for easiest future expansion
- Requires basic woodworking skills
4. Drill Mounting Holes
This critical step requires careful planning and execution:
Safety first:
- Unplug the refrigerator
- Verify no cooling lines are present where you’ll drill
- Wear eye protection and gloves
For door-mounted taps:
- Mark hole locations precisely
- Start with a small pilot hole
- Use a hole saw matching your tap shank diameter (typically 7/8″ or 1″)
- Drill from outside inward
- Go slowly to avoid damaging the door interior
For tower mounting:
- Mark center position
- Drill pilot hole
- Use 1.5″-2″ hole saw depending on tower base
- Clear insulation carefully from hole
- Consider installing a piece of PVC pipe through insulation for structure
According to research from the Craft Beer & Brewing Magazine, foam issues are reduced by 60% when beer lines are kept at the same temperature as the keg, so plan your drilling to accommodate proper line insulation.
5. Install Draft Components
With holes drilled, it’s time to install the draft components:
For door-mounted systems:
- Insert tap shank through door from inside
- Secure with flange and locknut on exterior
- Attach faucet to shank exterior
- Connect beer line to shank interior barb
- Secure with hose clamp
For tower systems:
- Feed beer lines through tower and refrigerator hole
- Mount tower securely to refrigerator top
- Connect lines to shanks inside tower
- Attach faucets to shanks
- Fill tower with insulation or install tower cooling fan (optional but recommended)
6. Set Up the CO₂ System
Proper gas setup is crucial for serving quality draft beer:
- Place CO₂ tank in secure, upright position inside or outside refrigerator
- Attach regulator to tank (use Teflon tape on threads)
- Connect gas line to regulator barb
- Secure with hose clamp
- Connect other end to keg coupler gas input
- Secure with hose clamp
- Open tank valve fully
- Adjust regulator to appropriate pressure:
- 10-12 PSI for American ales and lagers
- 12-14 PSI for higher carbonation styles
- Adjust based on line length and elevation
The Brewers Association recommends testing for gas leaks by applying a mixture of dish soap and water to connections – bubbles indicate leaks that should be addressed immediately.
7. Connect the Keg
With your system assembled, it’s time to tap your keg:
- Chill keg to serving temperature (24+ hours in refrigerator)
- Ensure tap is in closed position
- Connect coupler to keg (specific technique varies by keg type)
- Open CO₂ at set pressure
- Pull coupler handle down/out (depending on type) to engage
- Allow system to equilibrate for 24 hours before serving
- Pour and enjoy!
Common DIY Kegerator Enhancements
Once your basic system is running, consider these popular upgrades:
1. Multi-Tap Expansion
For serving multiple beers simultaneously:
- Add secondary regulator for independent pressure control
- Install gas manifold for single-pressure systems
- Calculate proper line lengths for balanced pours
- Consider liquid line chillers for tower systems
2. Aesthetics and Finishing
Enhance the appearance of your kegerator:
- Apply chalkboard paint for beer information
- Install tap handles that reflect your style
- Add LED lighting for visual appeal
- Build a custom wood surround for chest freezer models
3. Advanced Technical Features
For the ultimate home draft experience:
- Install flow meters for consumption tracking
- Add inline secondary regulators for perfect carbonation
- Implement glycol cooling for tower lines
- Install digital thermometer/hygrometer displays
According to John Brewster, recipe development expert, “The beauty of DIY kegerator building is the ability to grow your system as your needs and budget evolve. I started with a single tap mini-fridge and gradually expanded to a four-tap chest freezer with individual pressure control for each line.”
Troubleshooting Common Issues
Even well-built DIY kegerators can experience problems. Here are solutions to common issues:
Foamy Beer
Possible causes and solutions:
- Beer too warm: Ensure proper cooling throughout system
- Pressure too high: Adjust regulator down 1 PSI at a time
- Lines too short: Use minimum 5 feet of 3/16″ ID beer line
- Improper pouring technique: Open tap fully and quickly
Flat Beer
Possible causes and solutions:
- Pressure too low: Increase regulator pressure
- Temperature too cold: Adjust to proper serving temperature
- Gas leak: Check all connections with soapy water
- Keg nearly empty: Replace keg when less than 1/8 full
Slow or Stopped Flow
Possible causes and solutions:
- CO₂ tank empty: Check pressure gauge and refill if needed
- Line obstruction: Clean lines with proper cleaner
- Frozen beer line: Check temperature regulation
- Coupler issue: Ensure coupler is fully engaged
According to a survey from the National Homebrewers Association, 75% of first-time kegerator builders experience at least one of these issues, but nearly all are resolved with simple adjustments.
Maintenance Schedule for Longevity
To keep your DIY kegerator in top condition, follow this maintenance schedule:
| Timeframe | Maintenance Task |
|---|---|
| Every Pour | Rinse drip tray, wipe faucet |
| Every 2 Weeks | Clean faucet with brush, check gas levels |
| Between Kegs | Flush lines with cleaning solution |
| Every 3 Months | Disassemble and deep clean faucets |
| Every 6 Months | Check all connections for leaks |
| Annually | Clean refrigerator interior, check temperature controller accuracy |
Cost Analysis: DIY vs. Commercial
Let’s compare the costs of building versus buying:
| Component | DIY Cost | Included in Commercial Unit? |
|---|---|---|
| Used Refrigerator | $50-150 | Yes (new) |
| Conversion Kit | $80-150 | Yes |
| CO₂ Tank | $60-80 | Sometimes |
| Drip Tray | $15-60 | Usually |
| Tower (optional) | $50-120 | Yes |
| Temperature Controller (if needed) | $25-75 | Yes |
| Total Range | $230-635 | $800-1,500 |
Potential Savings: $350-870 for comparable features
The Rewards of Building Your Own Kegerator
Taking the DIY route to creating a home kegerator offers more than just cost savings—it provides a deeper understanding of draft systems, the satisfaction of creating something functional, and the flexibility to customize every aspect of your beer serving setup.
Whether you’re a homebrewer looking to showcase your creations or simply a craft beer enthusiast wanting to enjoy draft beer at home, building a DIY kegerator is a rewarding project with immediate and long-lasting benefits. The initial investment of time and resources pays dividends with every perfectly poured pint.
Remember that your first build doesn’t need to be perfect—many enthusiasts start simple and gradually enhance their systems as they learn. The most important thing is to begin the journey toward better draft beer at home. Cheers to your upcoming DIY kegerator project!
About the Author:
Mark Kegman spent 15 years as a mechanical engineer before turning his analytical mind to brewing equipment. His methodical approach to testing and reviewing brewing gear has earned him a reputation for thorough, unbiased assessments. Mark maintains a fully equipped home brewery lab where he puts everything from budget starter kits to professional-grade systems through rigorous testing protocols. He’s particularly passionate about helping brewers find the best value equipment and innovative solutions for small-space brewing setups. His detailed comparison videos have amassed over 2 million views online.