Can Running Out of Propane Damage a Furnace?

Premier Systems
February 29, 2024

Is your propane tank empty, but you still need your furnace? You're probably wondering, "Can running out of propane damage a furnace?" As the experts in furnace repair in Sudbury, Pro Comfort can help you understand how a lack of propane affects your furnace and what to do if you run out.


What Causes a Lack of Propane?

Depending on the size of your propane tank, you'll have enough fuel to run your furnace for several hundred hours. However, if you have other appliances that use propane, you might refill it more frequently. If you run out, it likely stems from either poor management or a leak.


Poor Management

Your supplier likely has you on a regular schedule for refilling propane, but some events can prevent them from delivering it on time. For example, if you've had a string of severe weather, they might have to delay your refill by a day or more.


Abnormal usage can also lead to running out of propane faster than expected, for example, if you've experienced unusually cold temperatures. If you're not on a regular schedule for refilling your propane, regularly monitoring your tank is important. You should refill it when your tank level reaches roughly 30%.


Leaks

Leaks in your tank are the other main cause of running out of propane. Because propane is naturally odorless, gas companies add the smell of sulfur or rotten eggs to it. Staying vigilant for this smell offers the best way to detect a propane leak in its early stages.


If you smell gas, don't use any light switches or other electronics, as a single spark could cause an explosion. Once you're at a safe distance, call your utility company to shut off the gas and electricity, and then call the propane company to fix the issue.


What Happens When You Run Out of Propane?

Can running out of propane damage a furnace? Without propane, your furnace won't run, so you won't have to worry about damaging it. However, lacking propane can create other challenges in your home.


Property Damage

Without your furnace, the extreme cold can freeze and burst your pipes, which, in addition to requiring expensive repairs, can flood your home and cause significant water damage. The cold can also cause condensation to form on your surfaces. This can warp your furniture or hardwood floors and cause mold to form on your carpet.


Problems With Refills

If a leak causes your lack of propane, it will cause issues when you try to refill it. Experts suggest you don't refill it if all the contents will just leak out again. 


Rust Buildup

When your propane levels run too low, it leaves the tank susceptible to moisture and subsequent rust. When it develops rust, your tank springs more leaks, causing further damage and leaving you without heat more often.


Appliance Issues

If you have other appliances that use natural gas, such as your stove or hot water heater, you also can't run them until you refill your propane. Consider the widespread effects this can have on your physical and mental health. Depending on the type of appliances you have, you might not have access to cooked food or warm showers.


Mandatory Inspection

When a propane tank runs out of fuel, federal law mandates you have it inspected for leaks before you refill it. This means you might go a few days without fuel, depending on your supplier's schedule, and you may pay an extra fee if it's an emergency.


Emergency Delivery

When your propane tank runs out, you'll likely need an emergency delivery and refill. This will cost you more than your standard fuel replenishment, so you'd benefit from preventing your tank from running out.


Managing Your Propane Levels

If you have a furnace or boiler that uses propane, how can you manage your fuel levels? Check the dial on your propane tank weekly, and if it breaks, replace it immediately. If you have a company monitor your levels, maintain consistent communication, and ask for updates about your deliveries so you can plan accordingly.


Pro Comfort Can Help Maintain Your Furnace

Can running out of propane damage a furnace? While your furnace won't run without propane, and thus, you won't damage it, a lack of propane can affect other areas of your home. Whether you're wondering about the correct duration of a furnace flame or need your yearly maintenance, Pro Comfort can answer all your questions and expertly maintain your furnace.


To book an appointment, fill out our online form or call 406-300-4258 today.

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