How an APU Saves You Thousands in Fuel and Maintenance Costs
In today’s competitive trucking industry, every mile and every dollar count. Long-haul drivers and fleet owners are constantly looking for ways to cut fuel costs, reduce wear on engines, and stay compliant with anti-idling laws. One of the most effective ways to accomplish all of this is by investing in an Auxiliary Power Unit (APU) — a game-changer for modern trucking.
What is an Auxiliary Power Unit?
An APU is a small, efficient engine or battery-powered system that provides power for a truck’s heating, cooling, and electrical systems without needing to idle the main engine. Instead of running your costly, fuel-hungry engine overnight or during downtime, an APU powers your cab and accessories with a fraction of the cost and environmental impact.
How Does an APU Save Money?
Idling a Class 8 truck can burn approximately 0.8 to 1 gallon of diesel per hour. If a driver idles for 8 hours per night, that’s 8 gallons wasted every day — and over 2,400 gallons per year. At today’s diesel prices, that adds up to over $9,000 annually in fuel costs alone.
An APU uses only a small fraction of that fuel. Some battery-powered APUs use no fuel at all. Over the course of a year, this can easily translate into $7,000 to $10,000 in savings per truck. Multiply that across a fleet, and the financial impact becomes massive.
Maintenance Savings Add Up
Idling doesn’t just waste fuel — it also accelerates engine wear. Experts estimate that one hour of idling equals 80 miles of driving in terms of engine wear. That extra mileage translates into:
– More frequent oil changes
– Increased downtime for repairs
– Shortened engine lifespan
By letting an APU handle overnight loads, your truck’s primary engine stays in better condition, lowering maintenance costs and extending the truck’s service life.
Legal Compliance and Anti-Idling Laws
Many states and municipalities have passed strict anti-idling regulations. Fines can range from $300 to over $1,000 per incident, especially in states like California and New York. APUs offer a legal and environmentally friendly alternative that allows drivers to rest comfortably while staying compliant with these laws.
Environmental Impact
APUs drastically reduce the carbon footprint of long-haul trucking. A traditional diesel truck emits approximately 22 pounds of CO₂ per gallon of fuel burned. Reducing idling by just one hour per day per truck can prevent thousands of pounds of emissions annually.
By adopting APUs across your fleet, you contribute to cleaner air, lower noise pollution, and a greener supply chain — all while saving money.
Why Choose APU Center?
At APU Center, we specialize in helping truckers and fleet managers maximize fuel efficiency and minimize downtime. We offer:
– New and refurbished diesel and battery APUs
– Trusted brands like Thermo King, Carrier, Green APU, and Dynasys
– Fast nationwide shipping and installation services
– Financing options to make upgrades affordable
Our knowledgeable staff helps match you with the right APU for your truck type, usage level, and budget. Whether you drive a Freightliner, Peterbilt, Volvo, Kenworth, or International — we’ve got an APU solution that fits.
Ready to Save?
Don’t let fuel prices and engine wear eat into your profits. Installing an Auxiliary Power Unit is one of the smartest upgrades you can make to your truck or fleet. Visit apucenter.com today to learn more or contact our team for a free consultation.



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lubricated and functioning properly. This practice helps prevent issues like seizing or unnecessary strain on specific parts.
hicles like long-haul trucks and RVs without the need to keep the main engine running. This functionality is especially important for saving fuel, reducing engine wear, and complying with anti-idling laws. Given the importance of an APU in maintaining vehicle efficiency and comfort, purchasing a used unit demands careful consideration. The market for used APUs can be daunting if you aren’t familiar with the specific aspects that need attention. Factors such as the unit’s specifications, physical condition, compatibility with your vehicle, and performance history are all crucial elements to examine. These considerations help ensure that the APU you choose will not only meet your power needs but also prove to be a reliable investment over time. By being thorough in your evaluation, you can make a more informed decision and avoid potential pitfalls. With so many variables at play, understanding these key areas can help you navigate the complexities of purchasing a used APU, ensuring that you get the best value for your money.
can go a long way in prolonging the lifespan of your APU and ensuring your vehicle runs smoothly.
associated with increased soot and carbon buildup in the engine. This cleaner operation reduces the likelihood of engine problems that could lead to expensive repairs or even engine replacement. Additionally, by alleviating the strain on the primary engine, other related components such as the transmission and cooling systems also benefit, further cutting down maintenance costs. The extended lifespan of the engine and its components means fewer vehicle downtimes, ensuring that your fleet remains operational and productive. Reduced maintenance requirements not only save money but also allow for better allocation of resources, enhancing overall fleet management efficiency. By investing in APUs, fleet operators can significantly decrease their maintenance budget and redirect those funds toward other critical areas of the business, making it a financially sound decision.