Welcome to our guide on building an earth cellar refrigerator, a sustainable solution to refrigeration that doesn’t rely on electricity. Earth cellars, also known as root cellars, have been utilized for centuries to preserve food in a cool, dark environment. In this blog, “Going Green Below Ground: A Step-by-Step Guide to Crafting Your Own Earth Cellar Refrigerator,” we’ll explore what an earth cellar is, how to build one, and offer some product recommendations to help you get started.
1. Understanding Earth Cellars:
An earth cellar is a below-ground storage space that utilizes the natural insulating properties of soil to maintain a cool temperature, ideal for storing perishable food items such as fruits, vegetables, and even dairy products. By harnessing the stable temperatures found underground, earth cellars offer an eco-friendly alternative to traditional refrigeration methods.

Extech Instruments Humidity and Temperature Data Logger
Monitor the conditions inside your earth cellar with this data logger, which records temperature and humidity levels over time, ensuring optimal storage conditions for your food.

Gardener's Supply Company Root Storage Bin
Keep your root vegetables organized and protected from pests with this breathable storage bin designed specifically for root cellars.

Solar Powered LED Underground Lights
Illuminate your earth cellar with these solar-powered LED lights, providing visibility without the need for electricity.

Hand Drill Auger Tool
Digging the hole for your earth cellar is made easier with this hand drill auger, which quickly and efficiently digs through soil.
2. Building Your Earth Cellar
Building an earth cellar requires careful planning and consideration of factors such as location, ventilation, and insulation. Choose a site with good drainage and minimal exposure to sunlight, and ensure adequate ventilation to prevent the buildup of moisture and mold.
Step-by-Step Guide to Building Your Earth Cellar Refrigerator:
Choose a Location:
Select a site for your earth cellar refrigerator that is well-drained, away from direct sunlight, and preferably on higher ground to prevent water accumulation.
Consider proximity to your home for easy access, but ensure it’s not too close to trees or structures that could cause root damage or hinder ventilation.
Dig the Hole:
Using a shovel or a hand drill auger, dig a hole deep enough to accommodate your refrigerator’s dimensions. Aim for a depth of at least 4 feet to ensure stable temperatures year-round.
Make the hole slightly larger than the dimensions of your refrigerator to allow for insulation and ventilation.
Construct the Walls:
Use durable materials such as reinforced steel panels or concrete blocks to construct the walls of your earth cellar refrigerator.
Secure the panels together using heavy-duty double-sided carpet tape or mortar for concrete blocks, ensuring a tight seal to prevent moisture infiltration.
Insulate the Walls and Floor:
Line the walls and floor of your earth cellar refrigerator with insulation material such as foam board or straw. This helps to maintain a consistent temperature and prevents heat transfer from the surrounding soil.
Use tape or adhesive to secure the insulation in place, ensuring complete coverage of the interior surfaces.
Install Ventilation Pipes:
Drill ventilation holes near the top of the walls to allow for airflow within the earth cellar refrigerator. These holes should be covered with mesh screens to prevent pests from entering.
Install PVC pipes or other ventilation ducts to facilitate air circulation, ensuring that fresh air can enter while stale air can exit.
Waterproofing and Sealing:
Apply a waterproofing sealant to the exterior walls of your earth cellar refrigerator to protect against water intrusion. This is especially important if your location experiences heavy rainfall or high groundwater levels.
Check for any gaps or cracks in the walls and seal them with waterproof caulking or sealant to prevent leaks.
Test and Monitor:
Before stocking your earth cellar refrigerator with food, test the temperature and humidity levels to ensure they fall within the optimal range for food storage.
Use a thermometer and hygrometer combo to monitor the conditions inside the refrigerator regularly, making adjustments as needed to maintain ideal storage conditions.
Following these steps will help you build a functional and efficient earth cellar refrigerator that provides reliable food storage without the need for electricity. Remember to maintain and monitor your earth cellar regularly to ensure optimal performance and food safety.

Ames Steel Tamper
Compact the soil around your cellar's walls and floor with this steel tamper, ensuring stability and proper insulation.

Ventilation Pipes
Install ventilation pipes to allow for airflow within your earth cellar, preventing the buildup of excess moisture.

Insulation Material
Line the walls and floor of your cellar with insulation material such as foam board or straw, helping to maintain a consistent temperature.

Waterproofing Sealant
Apply a waterproofing sealant to the exterior walls of your cellar to protect against water intrusion and prolong its lifespan.
3. Stocking Your Earth Cellar
Once your earth cellar is constructed, it’s time to start stocking it with food. Choose produce that stores well in cool, dark conditions, such as root vegetables, apples, and onions. Keep an inventory of your supplies and rotate them regularly to ensure freshness.

Mason Jars
Preserve homemade jams, pickles, and sauces in these durable glass jars, perfect for storing in your earth cellar.

Root Cellar Cookbook
Discover delicious recipes that utilize ingredients commonly stored in root cellars with this comprehensive cookbook.

Food Storage Labels
Keep track of expiration dates and storage times with these convenient food storage labels, designed for use in cold storage environments.

Thermometer and Hygrometer Combo
Monitor the temperature and humidity levels inside your earth cellar with this convenient combo device, ensuring optimal storage conditions for your food.
4. Maintenance and Care
Regular maintenance is key to ensuring the longevity and effectiveness of your earth cellar. Check for signs of water damage or pest infestation, and make any necessary repairs promptly. Keep the area around your cellar clear of debris and vegetation to prevent obstruction of ventilation.

Dehumidifier
Control moisture levels inside your earth cellar with a dehumidifier, preventing mold growth and food spoilage.

Pest Control Traps
Keep pests such as mice and insects at bay with these non-toxic traps, designed specifically for use in food storage areas.

Gardener's Supply Company Harvest Basket
Transport produce from your garden to your earth cellar with ease using this durable harvest basket.

Waterproof Tarp
Cover the entrance to your earth cellar with a waterproof tarp during inclement weather to prevent water damage.
5. Tips and Considerations
Consider installing a backup power source, such as a solar generator, to power essential appliances in the event of a power outage.
- Keep a thermometer and hygrometer inside your earth cellar to monitor temperature and humidity levels regularly.
- Rotate your food supplies regularly to prevent waste and ensure freshness.
- Store non-food items such as candles, matches, and first aid supplies in your earth cellar for emergencies.
- Experiment with different storage methods, such as canning and fermenting, to make the most of your earth cellar's capacity.
By following these tips and recommendations, you can create a functional and sustainable earth cellar that will provide you with fresh, delicious food year-round, without relying on electricity. Happy prepping!