How long should a 100lb propane tank last

A 20lb propane tank contains 430,000 BTU. To determine how long it will last on a firepit, you divide the figure by your fire pit’s BTU rating. For instance, the Endless summer firepit would last for; 430,000/50,000-=8.6 hours with the 20ln propane tank. You can get more usage time from your 20lb tank by reducing or keeping the flame low this ...

How long should a 100lb propane tank last. Determine the usable propane in the tank: A 250-gallon propane tank is typically filled to around 80% capacity for safety reasons, leaving approximately 200 gallons of usable propane. Estimate how long the tank will last: Divide the usable propane in the tank (200 gallons) by your total daily propane consumption (heating plus additional ...

Ever wondered how long a 1 lb, 15 lb or 20 lb propane tank will last you? Use this simple calculator to get an estimate of the burn time.

A 20 lb propane tank should keep a propane generator running for 5 hours. The size of the generator and the amount of load will impact the generator’s running time. How Long Will a Generator Run on a 100 LB Propane Tank? On average, a 100lb propane tank should keep the generator running for approximately 24 hours.In general, however, most people can expect to spend between $200 and $400 per year on propane for their fireplace. FAQ How long will a 100 lb propane tank last for a fireplace? If you’re using your fireplace unceasingly, a 100 lb propane tank will likely only last about 84 hours. However, if you’re only using it occasionally, your 100 lb ...Jan 1, 2021 · A 100-pound propane tank holds 23.6 pounds of propane when it’s full. If your fireplace is 20,000 BTU and you use it 12 hours a day, the 100-gallon propane tank will last you around 9 days. With continuous operation around the clock, it will last about 4.5 days, give or take. Knowing how long a 100-pound propane tank lasts when used for ... Since many grills don’t have reliable fuel gauges, knowing how long a propane tank will last is critical. Most gas grills use standard 20-pound propane tanks. On a mid-size barbecue, one tank can usually be counted on to provide between 18-20 hours of grilling time. So, on average, a 20-pound tank of propane should heat the average 1,000 square foot space for around 10 hours. If used on a lower heat output the same tank could last up to 15 hours. There are more complex formulas if you want to be more precise but this general rule should allow you to make a rough guess as to how long your propane …The best outdoor patio heaters, for example, have about 90% propane-burning efficiency.For such 50,000 BTU heaters, a 20 lb propane tank will last between 7 and 8 hours.That is to say that a 20 lb propane tank can last a whole evening, even if it has to power a 50,000 BTU patio heater.Jan 17, 2019 · How long the propane will last in your travel trailer will depend on your tank sizes, amount of tanks, usage, how large your RV is, how many showers are taken, as well as how much heat is used. Last year, we went camping in our 20’ travel trailer for 8 days with temperatures ranging from 25 at night to 45 in the day.

Determine the usable propane in the tank: A 250-gallon propane tank is typically filled to around 80% capacity for safety reasons, leaving approximately 200 gallons of usable propane. Estimate how long the tank will last: Divide the usable propane in the tank (200 gallons) by your total daily propane consumption (heating plus additional ...Apr 11, 2018 ... I have two 100lb tanks, to far away to get filled by truck. I took one downtown to get filled and was told it was to old and I had to get a new ...Using the averages, we can neatly estimate for how many months and days will a 1,000-gallon propane tank last. We’ll look at another example to illustrate how this calculation is made. Further on, you will find a table of how long should a 1,000-gallon propane tank last for average houses with square footage between 500 sq ft and 4,000 sq ft.If your propane grill burns at 60,000 BTU per hour, this means that one gallon of propane will burn for 1.53 hours. The burn rate of the appliance is therefore 1.53 hours per gallon of propane (92,000 BTUs/60,000 = 1.53 hours). Determine how many hours of propane you have left by dividing the total gallons of your tank by your appliance’s ...The next propane tank size up is the 100 lb. tank, which holds approximately 23.6 gallons. At 4.2 pounds per gallon, the tank holds 99.12 pounds of propane. They …They can get wet as long as they are off the ground to prevent rust. A rusted propane tank should be properly disposed of and not used. Make sure the valve on each propane tank is closed so that gas doesn’t leak. ... A quality propane tank will last thirty years and with truly little possibility of anything going wrong, this makes propane a ...

A galvanized steel aboveground propane tank will typically last 30 years or more before needing to be replaced. An aluminum or composite propane cylinder will last even longer than a galvanized propane tank. Underground propane tanks have a shorter lifespan—generally between 20 to 30 years.Apr 5, 2022 · How long will a 1-lb propane tank last on a Blackstone griddle? A 1-lb propane tank will last at most 1.5 hours on a 17-inch griddle. A one-pound propane tank will stay less than one hour on the more significant griddles, 22-inch, 28-inch, and 36-inch. What sizes do propane tanks come in? If the scale reads 30, that tells you that you have 12 pounds of propane left in the tank. How Long are RV Propane Tanks Good For. There is another expiration limit you should be concerned about. That time limit refers to how many hours will a propane tank last. A standard propane tank may hold about 4 1/2 gallons give or take a few quarts.Underground propane tanks have a slightly longer lifespan than above ground tanks due to the fact that the ground protects the tank from harsh weather. On average, underground propane tanks last about 30-40 years. Factors affecting the longevity of underground propane tanks include the installation method and the kind of soil surrounding the tank.

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Highlights. Multi-valve 100 lbs. tank: includes a service valve, high-capacity filler valve with integral back-check, pressure relief valve (375 PSIG ) and a POL valve, all in 1 single unit. On-site refilling: no need to transport your tank to get refilled, the multi-valve 100lb tank allows you to do on-site refilling of your propane gas ...Gallons of propane used per hour= (watts/3000) x 0.65. You will find that 0.65 gallons of propane can weigh approximately 2.73 pounds. Therefore, a 20-pound cylinder can contain 0.65 x 20/2.73= 4.76 gallons. This generally means that your 3000-watt load generator can run for at least seven hours. The calculations shown above are just an ...Jul 14, 2023 · How long will a 100 lb propane tank last on a generator? The duration depends on the size of the generator, the load it’s running, and the propane consumption rate. On average, a 100 lb propane tank can power a 7-kilowatt generator for about 33 hours if the generator is running at a 50% load. A propane tank should be stored outdoors and away from a house or garage. It should be kept upright, away from heat and in a dry location. Before storage, it should be inspected to...

We can calculate how long 500-gallon propane will last for different house sizes based on the average estimations. For instance, if 500 sq. ft. requires 170 gallons of propane in 6 months of winter, then a 500-gallon tank containing 400 gallons of propane will last for 14 months and 1 day in the 500 sq. ft. home.Tank Size Options: Residential propane tanks come in various sizes, commonly ranging from 20 pounds (5 gallons) to 1,000 gallons. For occasional use of the appliance, a smaller tank (like 100 or 250 gallons) might suffice. For more frequent use or multiple appliances, consider larger tanks (500 or 1,000 gallons).1 Duration of a Full Propane Tank How long does a 20 lb propane tank last in an RV? 20 lb tank holds 4.5 gallons at burning 1 gallon at the rate of 1000 BTUs can last about 18 days. How long does a 40 lb propane tank last in an RV? 40 lb tank holds about 9.4 gallons and could last about 37 days.Apr 11, 2018 ... I have two 100lb tanks, to far away to get filled by truck. I took one downtown to get filled and was told it was to old and I had to get a new ...Use the numbers given to determine how much propane your heater or furnace uses, if the size isn’t there. For example, a 90,000 BTU furnace uses 3 times as much as a 30,000 BTU unit, so 3 x .328 = .98 gallons per hour. A 120,000 BTU furnace uses twice as much as a 60,000 unit, so 2 x .656 = 1.3 gallons. Tip 2: Factor whether the …Jul 28, 2023 · Estimating The Burn Time Of 100Lb Propane Tank. A 100lb propane tank contains approximately 23. 6 gallons or 89. 4 liters of propane. The burn time of a 100lb propane tank depends on its cfh rate and the device’s btu rating. As per industry standards, a 100lb propane tank with a 60,000 btu output can last up to 11 hours if used continuously. The date of manufacture is stamped into the collar of your portable propane tank. Generally, tank recertification needs to be done between 5 and 12 years based on the date of manufacture, and includes visual defects and other factors as well. Larger tanks may also need to be recertified, but through a different process.Generally, a 20-pound propane tank will last up to 18-20 hours when used with a single burner, while a two-burner stove will use a 20-pound propane tank in 8-10 hours. Larger tanks, such as a 100-pound propane tank, can last up to 75 hours on a single burner or 36 hours on a two-burner stove.A: The amount of time a 20 lb propane tank will last for heating depends on the BTU rating of the heating appliance. As a general rule of thumb, a 20 lb propane tank will last for approximately 10-12 hours when used for heating purposes at a rate of 30,000-40,000 BTUs per hour, depending on the heat setting.

100 lb. tank: 4 feet tall and 18” in diameter; holds close to 25 gallons of propane when full. 420 lb. tank: 4 feet tall and 3 feet in diameter; holds 100 gallons of propane. 500-gallon tank: 5 feet tall by 10 feet long; holds 400 …

Jan 24, 2023 ... We got tired of filling our 30# Propane tanks to we got a 100Lb Propane Tank to make life a little easier. Rving during winter and being in ...The average propane tank will last for around 18-20 years. However, this can vary depending on a number of factors, such as the quality of the tank, how well it is maintained, and how often it is used. A tank that is well-maintained and used regularly may last for 30 years or more. A tank that is not well-maintained, or one that is only used ...The answer is that a gallon of propane will last about 95 hours if burned at a rate of 1000 BTUs per hour. For example, if you have a cooktop with a BTU rating of 30,000 BTUs, then a gallon of propane will last 3.17 hours. There are other factors to consider when calculating how long a propane tank will last, like the tank size and the BTU ...Apr 11, 2018 ... I have two 100lb tanks, to far away to get filled by truck. I took one downtown to get filled and was told it was to old and I had to get a new ...The average time a Propane tank lasts = 640500 / 50,000 = 12.81 (12 hours 48 minutes 36 seconds) With a 30 lb tank in ideal conditions, you can survive up to 12.81 hours of continuous stovetop, water heater, and heater usage in your RV. How Long Does a 20lbs Propane Tank Last in an RV? A 20 lbs propane tank has an average of 4.6 …3 posts · Joined 2010. #2 · Aug 11, 2010. we use a 20 lb at deer camp on a normal 4 burner stove and it will usually last about 10-12 weekends with 5-6 meals per weekend and on cold days we use it in the morning to get the chill out of the air i would guess a 100lb should last close to 2 months straight.Smaller propane tanks will only run for several hours, while larger tanks will last up to 24 hours. Expect to burn about 2-3 gallons per hour. How much does it cost to fill a 100 pound propane tank? Average Propane prices. For the last ten years, propane prices have been relatively stable.120 Gallon Propane Tank. Dimensions: 4'6" in height and 30" in diameter. Uses: 1-2 residential appliances. Commonly used for a hot water heater or space heater alone, or with another small appliance like a dryer or cooktop. A 120 gallon propane tank is also commonly referred to as 420 lb propane tank. 120 gallon propane tanks hold 96 gallons of ...A 20-pound propane cylinder holds approximately 430,000 BTUs of liquid propane. Each gallon of propane contains 91,502 BTUs of potential heat and each pound contains approximately 21,548 BTUs. …

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Aug 15, 2023 ... Edwin Sarkissian•2.9M views · 5:05 · Go to channel · 20-lb (9-kg) PROPANE TANKS - HOW LONG DO THEY LAST? Run Time Test! Chicago Griller•27K&nb...ORDER GAS NOW, IF PROPANE TANK GAUGE READS LESS THAN 30%! 30%. 36. 75. 97. 150. 300. 20%. 24. 50. 65. 100. 200. 10%. 12. 12. 32. 50. 100. Almost all Ressler Propane tanks have a gauge located on the tank. View the photos below to determine how to read the propane tank located on your property. Most propane tank gauges read …I'd expect a 100# tank to run a well-made single burner forge for ~30 hours or so. I think the tank pressure will fall off at an earlier fill level with a bigger tank; so I doubt a 100# tank would run for 5x what a 20# tank will do.Propane tanks are built for the long haul: on average, a high quality, properly maintained galvanized aboveground propane tank or propane cylinder should last 30 years or more, while some aluminum and composite cylinders can last even longer. Much of the propane tank longevity equation comes down to the size and use of the tank and how well it ...Using these two metrics, we can easily calculate how long will a 100-gallon propane tank last heating a 1,000 sq ft house: 100-Gallon Propane Tank Lifespan = 80 Gallons ÷ 1.889 Gallons/Day = 42.35 Days. Here you have it: A 100-gallon propane tank will last for …A 1-lb propane tank will not last even an hour for a standard-size griddle. If you want to get the best performance from your Blackstone griddle, it would be good to buy a 20-lb propane tank. This tank lasts at least 7 hours for the 36-inch grill and 36 hours for the 17-inch model.A 20-pound propane cylinder holds approximately 430,000 BTUs of liquid propane. Each gallon of propane contains 91,502 BTUs of potential heat and each pound contains approximately 21,548 BTUs. …Generally, a 20-pound propane tank will last up to 18-20 hours when used with a single burner, while a two-burner stove will use a 20-pound propane tank in 8-10 hours. Larger tanks, such as a 100-pound propane tank, can last up to 75 hours on a single burner or 36 hours on a two-burner stove.One gallon of propane is approximately able to produce 92,000 BTUs, so a 30 lbs propane tank can produce about 2,760,000 BTUs. There are many different factors that control how long a 30-pound propane tank will last. Some of these include appliance type and size, BTU rating of the appliance, and if the appliance runs constantly or turns off and ...Recreational Grilling. Anyone who owns a backyard gas barbeque grill uses the 20-pound tank. Typically, one 20-lb. propane tank lasts between 18 to 20 hours on a medium-sized grill. Larger grills with multiple burners can go through 20 pounds of propane in as little as 10 hours. We can break it down another way.3 posts · Joined 2010. #2 · Aug 11, 2010. we use a 20 lb at deer camp on a normal 4 burner stove and it will usually last about 10-12 weekends with 5-6 meals per weekend and on cold days we use it in the morning to get the chill out of the air i would guess a 100lb should last close to 2 months straight.Here’s the deal: A 500-gallon propane tank can last anywhere from 1 month and 23 days to 14 months and 4 days. For exact time, check the chart and graph for different sizes of homes further on. 500-gallon tank is a residential propane tank for houses. It can be installed underground, in the basement or even in a large garage. ….

Jun 2, 2022 · Recreational Grilling. Anyone who owns a backyard gas barbeque grill uses the 20-pound tank. Typically, one 20-lb. propane tank lasts between 18 to 20 hours on a medium-sized grill. Larger grills with multiple burners can go through 20 pounds of propane in as little as 10 hours. We can break it down another way. The fuel system within your vehicle is a complicated collection of many parts, including fuel injection lines, fuel tank, filters and pumps. All of these parts must be working toge...A disposable propane tank of 14 or 16 ounces will last for about 1.5 to 2 hours when consistently in use. How Long Will A 5lb Propane Tank Last? 5 lb propane tanks are great for those who love to grill. They are big enough for grilling and have a longer burn time than the smaller propane tanks.When utilizing a medium-sized gas stove, one Coleman propane tank should typically last between 18 and 20 hours. As much as 20 pounds of propane can be consumed by larger grills in just 10 hours. Every meal will normally require one to two pounds of fuel for a medium-sized grill set to high heat.It seems as though we are refilling our 100lb tanks every 4-6 days. In a typical season, we go through 3-5 tanks. I have talked to some owners of wheel houses ...Mar 24, 2014 ... The 100lb tank holds 20 gal.If you are gonna forge everyday,get a 250 gal. tank set up out back.It's a good bit cheaper for a commercial account ...How Long Does a 30 LB Propane Tank Last in an RV? An RV with a 30-pound propane tank will be able to run a 30,000-BTU furnace for about 21 hours. That seven gallons of propane can disappear much more quickly if you are running multiple propane appliances simultaneously. Your 30-pound propane tank (filled with 7 gallons of propane) will offer a ...However, you should note that large above-ground propane tanks should last for around 30 years while those underground should last for 30-40 years. What does a propane tank being requalified mean? Propane tanks are built to last for a very long time but cannot be good forever. So, every few years in the 12 years life span, your tank should be ...This article will answer the question of how long does a propane tank last, explore factors affecting propane tank lifespan, and how to maximize your tank usage. Factors Affecting Propane Tank Usage. The size of the propane tank is one of the main factors that affect how long propane tanks last. Large stationary propane tanks can …The answer to the question of how long a 100lb propane tank will last for cooking depends on several variables, such as the cooking appliance’s fuel consumption rate, the frequency and duration of cooking sessions, and the weather conditions. On average, a 100lb propane tank can last anywhere from 20 to 30 hours of cooking time. How long should a 100lb propane tank last, The number of hours you want to run your stove for. The equation is 20 lbs = 4.70588 gallons × 91,500 BTU per gallon = 430,588 BTU. 20 lbs tank lifespan = 430,588 BTU ÷ 5,000 BTU/h = 86.1178 hours. With this, finding how long will a 20 lb propane tank last at 5,000 to 90,000 BTUs…., The size of the tank (i.e. 20 lb, 40 lb, 100 lb) The frequency and duration of grill usage; The temperature at which the grill is used; The number of burners and their BTU output; While there are many variables at play, a 40 lb propane tank can last anywhere from 18-20 hours of straight usage on a medium-sized grill., How long does the average tank last? It depends on how much demand is placed on the tank by the appliance. Propane contains approximately 91,000 BTU's per gallon. If a consumer uses a propane tank to supply a grill that placed a 30,000 BTU per hour demand on the tank, a tank that has 3 gallons in it would last for about 9.1 hours., We can calculate how long will our propane tank last like this: 1,000-Gallon Tank Last For = 800 gallons / 5.68 gallons/day = 141 Days = 4 Months And 21 Days. This is the basic idea of how you can calculate how long will a 1,000-gallon propane tank last for any house size. Here you can see the calculation made for various house sizes:, I use a 100-lb tank to fire up my propane forge. Have it basically wide-open, say an average of an hour a day, and a full tank will last me several months. The only difference between my forge (which will run 1,800 - 2,000 degrees) and a stove is the regulator. Most small appliances run a a very low pressure - less than three pounds., Average Consumption Rates. From user manuals to personal experience and online forums, the consensus seems to be that a 20-pound propane tank lasts anywhere from 7 to 20 hours of cooking time on a Blackstone Griddle. That’s a pretty big range, but remember, it’s all about how you use it—low, medium, or high heat makes a world of …, From fueling your camping stove to keeping your RV ready for the road, finding propane refill stations near you is a must when it comes to preparing propane tanks and their accesso..., A quality propane tank will last thirty years and with truly little possibility of anything going wrong, this makes propane a must have for emergency stand-by use. Propane tanks are available in the following materials: Galvanized Steel – subjected to rust if stored in dampness. Aluminum – does not rust., A propane tank’s expiration date can be found stamped on its collar in a month-year format, such as 06-21 for June 2021. To determine when your tank expires, simply add twelve years to the stamped date. 3. How To Read The Date On a Propane Tank? The manufacture date will be stamped on the propane tank’s collar. It will be in month-year …, The media personality told Insider that six months ago he used Google 100% of the time, but now he is about 50/50 with ChatGPT. Jump to Shark Tank investor Kevin O'Leary told Insid..., Want to know how to clean a water softener resin tank? Check out our guide on How to Clean a Water Softener Resin Tank now and find out! Advertisement For those homes that are on a..., One gallon of propane is approximately able to produce 92,000 BTUs, so a 30 lbs propane tank can produce about 2,760,000 BTUs. There are many different factors that control how long a 30-pound propane tank will last. Some of these include appliance type and size, BTU rating of the appliance, and if the appliance runs constantly or turns off and ..., Apr 8, 2024 · The answer is that a gallon of propane will last about 95 hours if burned at a rate of 1000 BTUs per hour. For example, if you have a cooktop with a BTU rating of 30,000 BTUs, then a gallon of propane will last 3.17 hours. There are other factors to consider when calculating how long a propane tank will last, like the tank size and the BTU ... , The size of your propane tank is one of the most direct factors impacting its lifespan. Generally, the larger the tank, the longer it will last. For instance, a 20-pound tank (often used for grills and larger heaters) can last approximately 15-20 hours when powering a medium-sized grill., The fuel system within your vehicle is a complicated collection of many parts, including fuel injection lines, fuel tank, filters and pumps. All of these parts must be working toge..., The common 20lb propane tank holds on average 432,000 BTUs. 41,000 goes into 432,000 10.53 times, which means you will get approximately 10.5 hours of heat time on a 20lb propane tank. There are various propane tank sizes and how long the propane tank lasts depends on the size of the tank, and how many BTUs your heater is., How long will a 100lb propane tank last on a 30000 BTU heater? It depends largely on the type of heater being used and the ambient temperature outside. Most propane tanks will last around 18–20 hours on a 30000 BTU heater in moderate temperatures, giving a 100lb tank around 50-60 hours of usage., Now, let’s talk about how long a 100lb propane tank lasts when powering your outdoor grill. On average, a full tank provides about 1,500 to 2,000 hours of grilling time, depending on your grill’s BTU rating. That means, if you’re grilling for 3 hours every weekend, your tank should last for nearly a year to a year and a half., Tank Size Options: Residential propane tanks come in various sizes, commonly ranging from 20 pounds (5 gallons) to 1,000 gallons. For occasional use of the appliance, a smaller tank (like 100 or 250 gallons) might suffice. For more frequent use or multiple appliances, consider larger tanks (500 or 1,000 gallons)., If you use propane to power an appliance or two, a 100-gallon tank should last about a month. If you use propane to heat your home, your water and run multiple appliances, you’ll probably need a fill-up every four to six weeks. That’s based on data from the U.S. Energy Information Administration, which finds the average American home …, The date of manufacture is stamped into the collar of your portable propane tank. Generally, tank recertification needs to be done between 5 and 12 years based on the date of manufacture, and includes visual defects and other factors as well. Larger tanks may also need to be recertified, but through a different process., Depending on the BTU capacity, patio heaters can last anywhere from 7.57 hours to 37.86 hours on a 20 lb propane tank (more in the table further on). Propane burning efficiency. Propane in a patio heater doesn’t burn at 100% efficiency. Most propane patio heaters burn propane at 80% to 95% efficiency. In our calculation, we will presume we ..., The date of manufacture is stamped into the collar of your portable propane tank. Generally, tank recertification needs to be done between 5 and 12 years based on the date of manufacture, and includes visual defects and other factors as well. Larger tanks may also need to be recertified, but through a different process., A 20 lb propane tank should keep a propane generator running for 5 hours. The size of the generator and the amount of load will impact the generator’s running time. How Long Will a Generator Run on a 100 LB Propane Tank? On average, a 100lb propane tank should keep the generator running for approximately 24 hours., Estimating The Burn Time Of 100Lb Propane Tank. A 100lb propane tank contains approximately 23. 6 gallons or 89. 4 liters of propane. The burn time of a 100lb propane tank depends on its cfh rate and the device’s btu rating. As per industry standards, a 100lb propane tank with a 60,000 btu output can last up to 11 hours if used continuously., Generally, a 20-pound propane tank will last up to 18-20 hours when used with a single burner, while a two-burner stove will use a 20-pound propane tank in 8-10 hours. Larger tanks, such as a 100-pound propane tank, can last up to 75 hours on a single burner or 36 hours on a two-burner stove., In this example, the total propane usage per month for all three appliances is 35.4 gallons. If a 100-pound propane tank contains approximately 23 gallons of propane when full, then this tank would last for approximately 1.5 …, 1 Duration of a Full Propane Tank How long does a 20 lb propane tank last in an RV? 20 lb tank holds 4.5 gallons at burning 1 gallon at the rate of 1000 BTUs can last about 18 days. How long does a 40 lb propane tank last in an RV? 40 lb tank holds about 9.4 gallons and could last about 37 days., The answer to the question of how long a 100lb propane tank will last for cooking depends on several variables, such as the cooking appliance’s fuel consumption rate, the frequency and duration of cooking sessions, and the weather conditions. On average, a 100lb propane tank can last anywhere from 20 to 30 hours of cooking time. , Jan 21, 2011 ... what can I do to correct this, what has worked for you? The tank will last me on average a month when my furnace is set a 41 deg. and I just ..., Underground propane tanks have a slightly longer lifespan than above ground tanks due to the fact that the ground protects the tank from harsh weather. On average, underground propane tanks last about 30-40 years. Factors affecting the longevity of underground propane tanks include the installation method and the kind of soil surrounding the tank., The next propane tank size up is the 100 lb. tank, which holds approximately 23.6 gallons. At 4.2 pounds per gallon, the tank holds 99.12 pounds of propane. They …, The size of the tank (i.e. 20 lb, 40 lb, 100 lb) The frequency and duration of grill usage; The temperature at which the grill is used; The number of burners and their BTU output; While there are many variables at play, a 40 lb propane tank can last anywhere from 18-20 hours of straight usage on a medium-sized grill.