When the power goes out unexpectedly, your whole-house generator can be a real lifeline. It keeps the essentials running — your heating system, fridge, lights — so your family can remain safe and comfortable. But have you ever wondered: how long can a whole-house generator run continuously? And more importantly, how do you know when it’s time to let it rest?
What Is a Whole-House Generator?
Unlike portable generators, which are smaller and usually run on gasoline, whole-house generators are designed to power your entire home automatically when the power goes out. These are also known as “standby generators,” and they are permanently installed outside your home. They run on fuel sources like natural gas, liquid propane, or diesel.
A whole-house generator is typically connected to your home’s electrical system and, depending on the model, can power your kitchen appliances, heating and cooling systems, and more. These generators are built for the long haul, but even the toughest machines have their limits when it comes to how long they can run continuously.
How Long Can I Run My Whole Home Generator?
So, how long can a whole-house generator run continuously? The answer depends on several factors, including fuel type, generator size, and maintenance. Generally speaking, a whole-house generator can run for as long as you have enough fuel to keep it going. If connected to a steady fuel source like natural gas, your generator could theoretically run indefinitely. However, practical limitations like wear and tear, oil usage, and cooling system efficiency will eventually require the generator to take a break.
Whole-House Generator Run Time Based on Fuel Type
Fuel type plays a significant role in whole-house generator run time. Let’s break down some of the most common fuel options and how they impact your generator’s continuous runtime.
Natural Gas
Natural gas generators are a popular choice for homeowners because they connect directly to your home’s natural gas supply. This provides an almost unlimited fuel source during an outage, which means your generator can run as long as the gas keeps flowing. However, if there’s a disruption in the natural gas supply, such as damage to the gas line, that could cut your generator’s runtime short.
Liquid Propane
Whole-house generators that run on liquid propane use an external fuel tank, which means the runtime is limited by how much propane you have on hand. Propane tanks typically range in size, but a 500-gallon tank can keep a generator running for about seven to ten days straight. If you anticipate extended power outages, having a backup fuel supply or access to refueling services is essential.
Diesel Generators
Diesel generators are known for their durability and efficiency, especially in large applications. They rely on a diesel fuel tank, which means how long you can run your generator depends on the size of your tank and the fuel service provider’s ability to replenish it. Diesel generators are great for areas without access to natural gas, but you’ll need to plan ahead for fuel deliveries during extended outages.
Factors That Affect Whole-House Generator Run Time
Several factors can impact how long your generator can continuously provide power. Let’s take a closer look at the variables that play a role in your whole-house generator run time.
Cooling System
Generators get hot when they run continuously, and keeping the engine temperature in check is crucial. Most whole-house generators use air or liquid cooling systems to prevent overheating. If the cooling system isn’t functioning properly, it could reduce how long the generator can safely run. Regular maintenance checks on the cooling system are necessary to avoid unexpected shutdowns.
Fuel Supply
As mentioned earlier, how long a whole-house generator can run continuously depends heavily on the type of fuel it uses. Natural gas generators, for example, can theoretically run indefinitely if there’s no disruption in the gas line. Diesel and liquid propane generators, however, are limited by the capacity of their fuel tanks. Monitoring fuel levels and having backup options in place can extend your generator’s runtime during extended outages.
Maintenance and Oil Usage
No backup generator can run without periodic maintenance. Over time, oil usage, engine wear, and general wear and tear can affect how long a whole-house generator can run continuously. You’ll need to shut the generator down periodically for oil changes and other routine checks. On average, most backup generators will need an oil change every 100 to 200 hours of continuous use.
What to Do During an Extended Power Outage
If you live in an area prone to extended outages, like those caused by extreme weather, having a reliable generator is critical. In addition to having enough fuel, make sure to schedule routine checks and stock up on essentials like oil and filters. If you don’t already have a generator, consider contacting PGA Inc. for an installation. We can provide you with a whole-house generator service near Wausau, WI, or one of the surrounding areas.
Install a Generator With PGA Inc. Today!
By knowing how long a whole-house generator can run continuously, homeowners can be better prepared for extended power outages, whether they use a natural gas, propane, or diesel generator. Proper planning, regular maintenance, and a solid backup power system can keep your home running without a hitch.
Now that you know the ins and outs of standby generator run time, it’s important to keep your generator in good working order to avoid any interruptions during a prolonged power outage. If your generator hasn’t been serviced recently, or if you’re considering installing a new one, PGA Inc. is here to help. As experts in Wausau electricians, we’ll make sure your home stays powered when it matters most. Contact us today to schedule your service and get ready for the next storm!
