250 Gallon Propane Tank: Sizes, Prices & Buying Guide

250 Gallon Propane Tank: Sizes, Prices & Buying Guide

Propane is one of the most reliable and cost-efficient fuels for homes, farms, and businesses. Among the various tank sizes available, the 250 gallon propane tank is one of the most popular choices. It offers the right balance between capacity, space efficiency, and affordability, making it ideal for households and small commercial applications.

In this detailed guide, we will cover everything you need to know about 250 gallon propane tanks, including available sizes, pricing, installation, safety, and where to buy.

What is a 250 Gallon Propane Tank?

A 250 gallon propane tank is a medium-sized storage container used to hold liquid propane for residential and light commercial use. It is larger than the smaller 100-gallon tanks but not as massive as the 500- or 1,000-gallon tanks.

This size is particularly popular for:

• Homes using propane for heating, cooking, and hot water
• Small farms needing fuel for generators or equipment
• Businesses with moderate propane needs
• Backup fuel storage in areas with unreliable power

A full 250 gallon tank does not hold exactly 250 gallons of propane. Due to safety regulations, propane tanks are only filled to about 80% capacity, meaning a 250 gallon tank holds roughly 200 gallons of usable propane.

250 Gallon Propane Tank Sizes & Dimensions

When choosing a propane tank, it’s important to consider its physical size, since placement and installation depend heavily on available space.

Standard 250 Gallon Tank Dimensions

• Length: Approximately 7.5 to 8 feet
• Diameter: About 30 inches
• Height: Roughly 3.5 feet (when horizontal)
• Weight (empty): Around 500 lbs

Above-Ground vs. Underground Tanks

Above-Ground Tanks

• Easier to install and maintain
• Less expensive upfront
• More visible on your property

Underground Tanks

• Hidden from view for better aesthetics
• Require excavation and higher installation costs
• More protection from extreme weather

Both options are available in the 250 gallon size, so the choice depends on your budget, property layout, and personal preference.

How Much Propane Does a 250 Gallon Tank Hold?

Although the name suggests a full 250 gallons, propane tanks are filled only to 80% capacity to allow room for gas expansion.

• Maximum fill capacity: ~200 gallons
• BTU energy per gallon: ~91,500 BTUs
• Total energy available: ~18.3 million BTUs

This amount of propane can provide:

• 2–3 months of heating for a small home in cold weather
• 6–12 months of fuel for cooking and hot water
• Several weeks of generator power during outages

250 Gallon Propane Tank for Sale: Where to Buy

If you are considering a 250 gallon propane tank for sale, there are several buying options depending on your budget and long-term plans.

1. Propane Companies

Local propane suppliers often sell or lease tanks. Buying directly from them ensures proper installation and maintenance.

2. Equipment Suppliers

Farm supply stores, hardware stores, and equipment retailers may also offer new tanks.

3. Online Marketplaces

Websites like Craigslist, Facebook Marketplace, or eBay sometimes list used propane tanks. However, safety and certification should always be verified before purchasing second-hand.

4. Specialized Dealers

Dedicated propane tank dealers often sell new and refurbished tanks, both above-ground and underground.

250 Gallon Propane Tank Prices

Prices vary based on whether the tank is new, used, above-ground, or underground.

Average Costs:

• New Above-Ground Tank: $1,000 – $2,000
• New Underground Tank: $1,800 – $3,000 (includes excavation)
• Used or Refurbished Tank: $500 – $1,000

Additional costs to consider:

• Installation: $200 – $500
• Permits & Inspections: $50 – $200
• Regulators, valves, and fittings: $100 – $300

Renting vs. Buying a Propane Tank

When considering a 250 gallon propane tank for sale, you should also think about whether renting might be a better option.

Renting Pros:

• Lower upfront cost
• Supplier handles maintenance
• Easy to upgrade if needs change

Renting Cons:

• Higher long-term expense
• Locked into a single propane supplier

Buying Pros:

• Full ownership and control
• Ability to shop around for the best propane prices
• Long-term cost savings

Buying Cons:

• Higher upfront investment
• You are responsible for maintenance

Installation Requirements for a 250 Gallon Tank

Before installing a propane tank, specific safety and legal requirements must be met.

Placement Guidelines:

• 10 feet from property lines
• 10 feet from buildings or structures
• 10 feet from ignition sources (generators, air conditioners, etc.)
• Proper ventilation if installed underground

Installation Process:

1. Site preparation and leveling
2. Delivery of tank (requires truck or crane)
3. Hookup to home or building gas lines
4. Leak testing and inspection
5. Filling with propane

Always hire a licensed professional installer to ensure compliance with safety codes.

Lifespan and Maintenance of a 250 Gallon Tank

A properly maintained propane tank can last for decades.

Lifespan:

• Above-Ground Tank: 20–30 years
• Underground Tank: 25–40 years (if coated and cathodically protected)

Maintenance Tips:

1. Inspect tank for rust, dents, or leaks
2. Ensure valves and regulators are functioning
3. Keep the area around the tank clear of vegetation
4. Schedule regular professional inspections

Safety Considerations

Propane is safe when stored and used correctly, but precautions must be followed.

Key Safety Rules:

1. Never attempt DIY repairs
2. Install carbon monoxide and gas detectors in your home
3. Keep flammable items away from the tank
4. Do not store propane tanks indoors

In case of a suspected leak, evacuate immediately and call your propane supplier or fire department.

Common Uses for a 250 Gallon Propane Tank

A 250 gallon tank is versatile and can support multiple applications:

• Residential Heating: Powering furnaces and space heaters
• Cooking: Supplying fuel for stoves and ovens
• Hot Water Systems: Propane water heaters and boilers
• Generators: Backup power during outages
• Outdoor Appliances: Fire pits, grills, and pool heaters

FAQs

1. How long does a 250 gallon propane tank last?

Depending on usage, it can last anywhere from a few weeks (for whole-home heating in winter) to a full year (for cooking and hot water only).

2. Can I install a 250 gallon propane tank myself?

No. For safety and legal reasons, installation must be performed by a licensed propane technician.

3. Is it better to buy or rent a 250 gallon tank?

If you plan to stay in your home long-term, buying usually saves money. If you want flexibility, renting may be better.

4. How do I know when my propane tank is low?

Most tanks come with a gauge. Refill when it reaches 20–30% capacity to avoid running out.

5. What is the difference between a 250 and 500 gallon tank?

A 500 gallon tank can store about twice as much propane, making it better for large homes or commercial use. A 250 gallon tank is ideal for smaller needs.