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The Daily Insight

How big of a propane tank do I need for a pool heater

Author

Isabella Wilson

Published Mar 14, 2026

A large propane pool heater will require a 500-gallon tank in most cases, whereas a medium to small heater can get by with a 250 gallon tank.

How many gallons of propane does it take to heat a pool?

Here’s why: the average propane pool heater burns about 1 gallon of propane per hour per 100,000 Btus. Since a propane pool heater for a standard-sized pool (~21,000 gallons) outputs 400,000 Btus, you will burn about four gallons of propane per hour.

Is a propane pool heater worth it?

Propane as a fuel has several merits; it is more energy rich than natural gas, which means you will use less to heat your pool. … Even though natural gas produces fewer BTUs per cubic feet, the gas is also much less expensive.

How long does a propane tank last for a pool heater?

HOW LONG WILL THE TANK LAST? 100 gallons of propane will last approximately 25 – 30 hours of run time.

How long will a 500-gallon propane tank last for heating?

House Size (Square Footage):How Long Will A 500-Gallon Propane Tank Last?500 sq ft14 Months and 4 Days

What size of propane tank do I need?

Typically, a home needs to be at least 2,500 square feet, and use propane for multiple appliances for a 500-gallon tank to be the best choice. You can also choose above-ground or below-ground tank installation for 500-gallon tanks.

How far away from a house does a propane tank need to be?

must be placed a minimum of 10 feet from a building. must be at least 10 feet from a line of adjoining property.

What size pool heater do I need for a 15000 gallon pool?

Pool Size (Feet)Summer 4 BTU’sSpring & Fall 5 BTU’sUp To 10,000 Gallons 12′ x 24’50,000 BTU50,000 BTUUp To 15,000 Gallons 14′ x 28′85,000 BTU85,000 BTUUp To 20,000 Gallons 16′ x 32’85,000 BTU110,000 BTUUp To 25,000 Gallons 18′ x 36’110,000 BTU125,000 BTU

What size propane tank do I need for a swimming pool?

What size Tank do I need? For a standard size pool (21,000 gallons) most pool heaters are 300,000 – 400,000 BTU . Because of this you will need at least a 200 gallons of propane to satisfy the amount of pressure to run these heaters.

Can a pool heater be too big?

One of the important parts of putting in a pool heater is making sure it is the correct size to maintain the comfortable temperature you want. … However, there is no such thing as oversizing a pool heater. The larger the heater’s output, the faster it heats the water in the pool, and it will not begin short-cycling.

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What is the cheapest way to heat a pool?

  1. Use a Solar Cover. …
  2. Invest in Solar Sun Rings. …
  3. Try Out a Liquid Solar Pool Cover. …
  4. Build a Windproof Pool Enclosure. …
  5. Use the Black Hose Trick. …
  6. Snag a Pool Heat Pump. …
  7. Combine a Solar Cover and Pool Heat Pump.

What is the most cost effective pool heater?

Solar pool heaters are the most cost-effective option that uses the sun’s energy to heat your swimming pool water. It uses solar collectors, filter, pump and flows control valve to heat the pool in a way that is very economical. In fact, it pays for itself within 3-5 years and incurs almost negligible operating costs.

Does a propane pool heater need electricity?

One fairly obvious difference between them is found in their names: Gas pool heaters run on gas, whereas electric pool heaters use electricity to warm water. … The ones that burn natural gas have to be hooked up to a gas line, and the ones that burn propane require propane tanks.

How far does a 500 gallon propane tank need to be from house?

from his property line, a 500-gallon tank needs to be at least 5 ft. off the property line upon which it is set, which equates to 10 ft. This is in addition to being at least 10 ft. from any significant building or another 150- to 500-gallon tank.

How much is a used 500 gallon propane tank worth?

Tank SizesUsed PriceCost New500 gallon$950$,1,700330 gallon$800$1,400250 gallon$649$1,199120 gallon vertical$549$699

What is the cost of a 500 gallon propane tank?

500-Gallon Propane Tank Price A 500-gallon propane tank averages $700 to $2,500 when installed above ground. When installed below ground, this tank costs between $1,500 and $3,000. This is the minimum tank size required to heat most homes. This is a large horizontal cylinder instead of vertical smaller tanks.

Can propane tanks be next to House?

Propane tanks have a number of rules about placement. … A propane tank less than 125 gallons can be placed adjacent to the house, while larger tanks must be at least 10′ away. This means the tank can be more easily disguised by planting a bush or tree in front of it, making the tank placement more visually inconspicuous.

How close can a 250 gallon propane tank be to a house?

A 250-, 330- or 500-gallon tank must not be installed closer than 10 feet to your house, or to the property line. It can’t be located within 10 feet of any source of ignition, or near combustibles, either. Examples of combustible sources include air conditioning units, decks and pools.

How close can a 100 gallon propane tank be to a house?

When placing a 100-gallon propane tank on your property, keep these measurements in mind: The minimum distance from the opening of a building is 5 feet. The minimum distance from any source of ignition is 10 feet.

How long will a 100 lb propane tank last for heating?

At a consumption rate of 26,000 BTU per hour, your 100-pound bottle will fuel your propane fireplace for about 84 hours, equivalent to 3.5 days of continuous 24/7 operation.

How big of a propane tank can I buy?

250 gallon – For generators, pool heaters, and a combination of appliances (holds 200 gallons of propane) 500 gallon – For central heating and pool heaters (holds 400 gallons of propane) 1000 gallon – For large homes and commercial applications (holds 800-850 gallons of propane)

How big is a 1000 gallon propane tank?

1000 Gallon Tank 1000 Gallon tanks are approximately 16′ long and 3.5′ in diameter. They hold 800 gallons of Propane at 80%. Generally for large homes and commercial use.

How many gallons does a 20 lb propane tank hold?

20 lb Propane Tank 20 pound propane tanks are often referred to as grill cylinders and hold 4.6 gallons of propane when full.

How many BTUs do I need for a 20000 gallon pool?

20,000 gallons x 8.3 lbs / gallon = 166,000 lbs of water that needs to be heated. Since it takes one Btu to heat one pound of water by a single degree, we now know that raising this entire 20,000-gallon pool by one degree will require 166,000 Btu of heat energy.

How do I calculate the gallons in my pool?

Length x width x average depth x 7.5 = volume (in gallons) Length times width gives the surface area of the pool. Multiplying that by the average depth gives the volume in cubic meters. If you’d like to find the pool volume in gallons, multiply your results by 7.5, as there are 7.5 gallons for each cubic foot.

What size heater will be required to heat the water in a swimming pool?

To maintain the temperature, you need about 10 BTUs per hour, per square foot of surface, per degree above the air temperature. That means keeping a pool with a surface area of 300 square feet at 80 F (27 C) degrees in 60 F (15 C) degree weather would require 60,000 BTU per hour.

How many BTUs does it take to heat a 15000 gallon pool?

Pool Volume(Gallons)Heat Output(BTU)10,00050,000 BTU15,00090,000 BTU20,000120,000 BTU25,000140,000 BTU

Can you add a heater to an above ground pool?

Just like inground pools, above ground pools can have both heat pumps and gas heaters added. Plus installation is a fairly simple and straightforward process.

How many BTUs do I need for a 10000 gallon pool?

Sizing a gas heater for inground pools is done by first matching pool heater BTU output to pool size in gallons. Or approximately 100K BTU’s for every 10,000 gallons of pool water. For inground pools less than 20,000 gallons, small gas heaters like the Raypak 206K BTU output are suitable.

What is the lifespan of a pool heater?

You can expect a gas or heat pump pool heater to last 8 to 11 years, with an average of 10 years. Regular usage and maintenance is key to a longer lifespan.

How many gallons does a 27 foot round pool hold?

Above Ground Swimming Pool Water Volumes by Size21 ft Round9,106 gals10,408 gals24 ft Round11,895 gals13,594 gals27 ft Round15,054 gals17,205 gals30 ft Round18,585 gals21,240 gals