How Much Propane Does a 30,000 Btu Heater Use?

Last Updated on January 30, 2022 by Vernon Scott

91,500 BTUs per hour are produced by a gallon of propane. As a result, one gallon of propane will operate a 30,000 BTU heater for roughly three hours. The cost of running a wall heater of this kind is around $0.80 per hour [Electric ones are different, here’s the guide for you: Electric wall heaters]

Here are more details:

BTU (British Thermal Unit)

The amount of energy needed to warm up a pound of water by one degree Fahrenheit is measured in BTU. Megajoules are also used to calculate the amount of thermal energy necessary (MJ). One joule is equal to one million megajoules.

This is the energy necessary to move one newton over a distance of one meter. Why would this be important to us? Because 1 megajoule equals 942.82 BTUs, it matters.

In most situations, BTU is used to grade heating and cooling products and determine the total cost of heating in the US. However, for ease of assessment, it’s always a good idea to make comparisons of one 30,000 BTU wall heater to another.

Calculating the Propane Gas Consumption

To figure out how much propane your gas heater will consume, you’ll need to take a few steps. Here’s what you should do:

  • Find out how many BTUs or MJs your propane wall heater has. It’s 30,000 BTU in your instance. This will show how much energy is utilized on a daily basis. In the majority of cases, this data is included in the user handbook.
  • Take notice of the fuel’s energy content. A gallon of propane released every hour, for example, has an hourly energy content of 91,500.
  • Divide that energy content by the consumption rating of the appliance. So, if you divide 91,500 by 30,000, you get 3.05 hours with a 30,000 BTU heater, for example.

To put it another way, a gallon of propane will last you three hours if you use a 30,000 BTU gas heater for 3 hours per day.

You should be able to determine how long you can use the gas heater and how much you may need to pay each day or each month using this knowledge.

Bear in mind that this estimate only works if the heater is used at full power for an extended period of time. As a result, keep in mind while you’re not at home or at nighttime when the air temperature may decrease.

That so, using this method, you might be able to calculate how much propane you’ll need to run your 30,000 BTU wall heater. As a result, a pressure regulator is required to regulate the quantity of propane flowing into the heater.

How Much Does It Cost to Operate a Wall Heater?

You should also calculate the cost of operating the wall heater after determining the natural gas usage. Let’s pretend you would like a gas heater that runs on gas for an average of 8 hours each day. To calculate the expense of every month, multiply the hours by 30 days, which equals 240 hours.

Running a gas heater, for instance, will cost you $0.80 per hour on average, which is more than natural gas.

As a result, multiplying the cost of operation by 240 (the total hours you expect to spend each month) would result in a gas bill of about $192.


How big of an area can a 30,000 BTU heater cover?

Many factors will influence the size of the space that your 30000 BTU propane heater will be able to cover. One of them is whether or not the space is insulated. A 30000 heater, should easily cover between 600 and 750 square feet on average.

How efficient is a propane heater?

Propane devices generally save money on energy and provide more comfort than other heating options. In the heating process of a high-efficiency, clean-burning propane furnace, just under 10% of the gas is lost.


Finally, considering that you’ll only be paying $200 per month for the gas wall heater unit, 30,000 BTU propane heaters don’t utilize a lot of fuel or energy.

With such a device, you’ll require a gallon of gas every three hours. You ought to be able to save costs on gas energy bills by merely heating up one section, based on how much you are using it.

I am a Trained HVAC Technician and Author of EmiNick. I have been in the industry for over 10 years and have gained a wealth of knowledge and experience. I have been involved in all aspects of HVAC, from design and installation to repair and maintenance. I am also a certified energy auditor and have experience in conducting energy audits for both residential and commercial customers. In addition to my HVAC experience, I am also a certified home inspector and have conducted many home inspections for both buyers and sellers.

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