
What Idling Is Really Costing You Every Year



Green APU is proud to announce a new partnership with Fontaine Modification, expanding sales, installation, and upfitting options for trucking fleets across the country. Fontaine Modification is an industry respected truck modification, installer, and upfitting provider serving commercial and fleet operations nationwide. Through this partnership, Fontaine Modification ship-thru locations will offer and install Green APUs, giving fleets a more streamlined path from purchase to professional installation backed by proven performance and reliability.
Green APU provides dependable auxiliary power designed to reduce idle time, improve fuel efficiency, and maintain driver comfort during rest periods. Fontaine Modification’s nationwide footprint and fleet focused expertise ensure consistent installations that align with operational standards and support maximum vehicle uptime.
Built with simplicity and serviceability in mind, Green APUs use non-proprietary, automotive grade components to make maintenance predictable and parts easy to source. This practical design helps fleets minimize downtime, control operating costs, and maintain consistent performance across their operations.
Ship-Thru Locations:
Charlotte & Statesville, NC – Freightliner
Laredo, TX – Freightliner & International
Dublin, VA – Volvo & Mack
Chillicothe – Kenworth
Denton & Garland, TX – Peterbilt & Kenworth
Mineral Wells, WV – Hino & Isuzu
Salem, VA – Mack

Every trucker knows idling is part of life on the road. Whether you are trying to stay comfortable in different weather climates or powering electronics in the cab, leaving the engine running often feels like the easiest solution. But this convenience comes at a steep cost.
Every hour of idling drains fuel, wears your engine, and chips away at your profits. That is why more fleets and owner-operators are turning to auxiliary power units (APUs), and why Green APU is leading the charge in protecting both your wallet and your engine.
The Hefty Fuel Cost of Idling
The fuel cost of idling alone is enough to make any trucker reconsider purchasing an APU. A typical Class 8 truck consumes at least a gallon of diesel for every hour that it spends idling. For example, over the course of a 10-hour rest period, that can mean around $36 to $37 dollars daily in fuel costs from idling according to the national average diesel price. Over the span of a year, the total wasted fuel can easily surpass $10,000. That is real money vanishing hour by hour, tank by tank.
Green APU was built to put an end to that fuel loss. Our APU units allow truckers to power what they need without running the main engine, meaning thousands of dollars saved annually. Designed with truckers in mind and built on real-world experience, Green APU is a smart investment that pays for itself quickly, often within just 12–18 months.
The Hidden Toll on Engines
Fuel waste is only half the story. Every hour a truck idles also adds to the wear and tear of the engine. Prolonged idling can lead to clogged DPF systems, shortened service intervals, and an increased risk of unplanned downtime. Over time, these factors can increasingly reduce the life of an engine and hurt potential resale value on your truck. For an owner-operator or a fleet, that’s not only money lost that day, but also years down the road.
Green APU addresses this issue by shifting the load away from the truck’s primary engine. Each unit is powered by a Kubota three-cylinder diesel engine, which is recognized industry-wide for exceptional reliability and long-lasting performance. By letting the APU shoulder some of the burden, drivers can protect their main engine, prolong its lifespan, and avoid any unnecessary maintenance costs that may come your way.
Downtime and Lost Profits
Beyond fuel and mechanical costs, idling also contributes to downtime. Frequent maintenance and surprise repairs mean your truck sits idle in a shop, losing money instead of making it. For fleets and independent drivers alike, those hours translate directly into lost savings and profits.
Green APU was designed with this reality in mind. Unlike other units that rely on proprietary parts and limited options for service, our APUs use automotive-standard components available nationwide from retailers such as NAPA and AutoZone. With a network of over 40+ distributors, 50 service centers, and 24/7 lifetime support, downtime is cut short, keeping drivers earning instead of waiting.
Protecting the Wallet and the Engine
When you step back and look at the big picture, the numbers tell a simple story. For example, idling your truck for 10 hours a day for 300 days wastes about 3,000 gallons of diesel, costing more than $10,000 a year at typical U.S. diesel prices. A Green APU, on the other hand, quickly pays for itself and continues generating savings while also extending engine life and reducing its wear and tear. That is why our mission is simple: keep trucks running, costs down, and businesses profitable.
Green APU: Built by Truckers, for Truckers
Green APU was founded out of firsthand experience. Our founder, Art Gruszka, managed a fleet of 120 trucks and clearly saw the shortcomings of traditional APUs: complex service needs, reliability issues, and high costs. Green APU was born to solve those problems with a product proudly manufactured in the USA, engineered for durability, and backed by a two-year, unlimited-hour warranty.
At the end of the day, idling drains more than fuel. It wears down your equipment, cuts into your profits, and adds unnecessary stress to the job. Green APU offers a smarter path forward: comfort, saving, and a longer-lasting truck.
Stop wasting. Start saving.
Discover how Green APU can protect your bottom line!

Every mile you drive is money earned and every minute your truck is idling is money wasted. Your Auxiliary Power Unit (APU) should save you fuel, reduce wear on your main engine, and keep you comfortable on the road without draining your wallet. That is what Green APU delivers and why so many drivers are switching from the competition.
Save Big on Fuel Costs
Idling your main engine for heat, air conditioning, or power can burn a gallon of diesel every hour. Over a year that can mean thousands of dollars in wasted fuel. Green APU is built to give you the power you need while using a fraction of the fuel. Many drivers see the unit pay for itself in savings within the first year.
Lower Service Needs and Downtime
The longer your truck is in the shop the less money you are making. We designed Green APU to be tough, dependable, and easy to maintain. With fewer moving parts and a smart layout, service times are shorter, and breakdowns are less frequent which keeps you on the road where you belong.
Freedom with Non-Proprietary Parts
Other APUs lock you into expensive repairs with parts that are hard to find. Green APU uses an automotive approach with parts being easily accessible nationwide. That means that you’re not stuck waiting for special orders and repairs cost less and get done faster.
Built for Every State Including California
Some states like California have strict anti-idling and emission laws. Our Tier 4 Carb compliant engine means you can roll into California, run your APU, and stay compliant without worrying about tickets or downtime.
The Bottom Line
Green APU is built for drivers who want to save money, stay on the road, and avoid unnecessary hassles. With fuel savings, lower service needs, and the freedom to repair anywhere, it’s the smart choice over the competition.

Winter trucking is a challenge, but Green APU is here to keep you moving efficiently, no matter how low the temperature drops. From keeping your cab warm to ensuring your engine starts smoothly every morning, here’s how Green APU helps you conquer the cold.
Many truckers rely on bunk heaters, but they can be unreliable and difficult to regulate. With Green APU, you get consistent and comfortable heat that’s easy to control, ensuring a restful night without the hassle of extra equipment. Stay warm and comfortable, no matter how cold it gets outside.
Winter weather can drain your truck’s battery faster than usual, leading to frustrating breakdowns and costly road service calls. Green APU continuously charges your batteries, preventing dead batteries and eliminating the need for emergency jump-starts. This means more reliability and fewer interruptions to your schedule.
A frozen engine can leave you stranded and cost valuable time. Green APU’s engine preheat feature ensures your truck is always ready to start, even on the coldest mornings. By maintaining a warmer engine temperature, you can avoid unnecessary wear and tear while keeping your truck running efficiently.
Why Choose Green APU?
More Comfort: No bunk heater required, just reliable, easily controlled warmth.
More Reliability: Battery charging prevents roadside breakdowns and emergency calls.
More Efficiency: Engine preheat ensures smooth starts, reducing engine wear in freezing conditions.
Stay ahead of the cold this February with Green APU. Visit GreenAPU.com to learn more and stay warm on the road!

Every experienced trucker knows that life on the road isn’t always easy. This is especially true as the colder months of Fall and Winter approach.
The goal of everyone at Green APU is to help our hard-working customers stay as comfortable, and productive as possible when temperatures start to drop. In this blog, let’s look at 6 great ways the Green APU can help make the time spent in your truck more worry-free.
Automatic Climate Control
Enjoy comfortable temperatures all year long with Green APU’s automatic temperature control. You’ll never have to worry about manually adjusting the thermostat inside the truck, as the unit goes from A/C to heat based on the outside temperature.
Of course, you can still change the temperature of the truck’s cab via a switch conveniently mounted near the lower bunk.
Engine Pre Heat
Even today’s advanced diesel fuels will gum up if the outside temperature gets too cold. Green APU makes it easy to run your rig anytime day, or night with our engine pre-heat feature.
The Green APU will warm your truck’s engine should temperatures drop to 32F or below. As Mother Nature’s Fall and Winter winds begin to whip about, you’ll be prepared for anything.
Save Time & Money on DPF Maintenance
As cooler weather arrives, you don’t want to worry about your Diesel Particulate Filter (DPF) wearing out prematurely. The Green APU provides all the power you’ll need inside the cab, so you don’t have to waste fuel, or overwork your DPF by idling your engine for hours at a time.
Our unit also helps save money by extending the life of your DPF and decreasing the frequency of regeneration or replacement services.
Battery Charger
Dead or weak batteries won’t start big rigs. Never fear with Green APU on board! Our built-in charger will keep your batteries at full power 24/7. It’s also worry-free, as the unit automatically monitors battery levels, so you can focus on more important things.
Whether you have new batteries, or trying to get more miles out of older ones, Green APU is ready to keep them charged at top capacity.
Super Easy Parts Availability
In the unlikely event your Green APU needs a belt or a simple part, we utilize many off-the-shelf components, readily available at any auto parts store.
With Green APU, you don’t have to worry about waiting for a part to be shipped. We make it easy to get into a parts store, and get back on the road!
Convenient Distribution Centers
Enjoy peace of mind by knowing there are many authorized Green APU Distribution Centers located throughout the U.S. These facilities offer a wide range of Green APU sales, repair, and maintenance services, and are ready to help when you need it.
To locate an authorized Distribution Center, click here!
No Matter Where the Road May Lead, Green APU has You Covered!
When Summer starts to fade away, and the cooler temperatures of Fall and Winter come, you can count on Green APU to keep you comfortable during your downtime.
Whether it be our automatic climate control, engine pre-heat, battery charging, easy access to parts, or convenient Distribution Center locations, Green APU is your long-term, reliable partner on the road.
We will always be here when you need us! Contact us today to learn more.

Save $1000 Off MSRP on Your Installation!
In honor of National Truck Driver Appreciation Week, Green APU is thrilled to offer a special once-a-year $1,000 discount off MSRP on our auxiliary power units to show our gratitude for the hard work and dedication of truck drivers.
To take advantage of this offer, book your installation between September 15-21, 2024. Installation doesn’t need to be completed this week but must be completed within 90 days of scheduling, only at our Lemont IL location.

There’s an adage in business that if you keep employees happy, they will keep your customers happy. This is certainly true in the ultra-competitive trucking industry.
The truckers who drive for you are brand ambassadors – the face of your company. They are the people that customers see every day. It makes good business sense to help your team enjoy their careers, so they will do their best to make your company successful.
One of the most critical elements of job satisfaction for over-the-road truckers is comfort and convenience during off hours. While working, they also want reliable equipment that will perform well day after day.
When you invest in a Green APU for your trucks, you’ll be making your employees’ jobs easier, and certainly more comfortable, mile after mile.
Let’s look at 6 great reasons why your team will appreciate you for having Green APUs in their rigs.
Comfort & Convenience
Everyone knows it’s not easy being an over-the-road trucker. When your employees’ shifts are done for the day, they deserve some quality relaxation. The Green APU provides your drivers with everything they need to enjoy the comforts of home, including plenty of power for heat, air conditioning, and indoor lighting.
Whether they are using the microwave to heat a meal, watching TV, charging a cell phone, using a laptop, or doing all these things at the same time, the Green APU will generate all the electric power they want to enjoy their off hours.
Making Their Job Easier
In addition to the creature comforts of home Green APU provides, it can also make your drivers’ jobs a little easier. Our built-in engine preheat will ensure easy start-ups on cold winter mornings.
Green APU’s battery monitoring function also keeps the truck’s batteries at full charge, so your drivers never have to worry about a dead, or undercharged battery when it’s time to hit the road.
Authorized Distribution Centers
On the road, convenience is everything. We have authorized Distribution Centers across the nation that can help your drivers with any sales, service, or parts they need to keep their Green APUs running strong 24/7.
Parts Available Everywhere
If they can’t get to a Distribution Center right away, your drivers will love that nearly all components for their Green APU are available nationwide at any auto parts store.
Lifetime 24/7 Technical Support
Green APU offers lifetime, 24/7 technical support. Should your drivers need to ask a question, or require assistance to resolve an issue, our team is ready to help day or night!
New Quieter Exhaust System
Green APU’s newly designed, expanded air filter and exhaust extension reduces noise levels by an average of 30%, and will appear on all new Green APU units. An easy-to-install, bolt-on upgrade kit is available for units already in service.
Green APU – A Win-Win for Everyone!
We know every good trucking company wants to treat their drivers well, as they are the backbone of the business. As an owner, Green APU brings so many benefits to your company, including substantial fuel savings.
Your drivers will appreciate that you care enough about their comfort and convenience to invest in a Green APU. To learn more about how you can keep your drivers happy as they haul freight down the highways, contact us today!

April 22nd is Earth Day. Started in 1970, the annual celebration brings millions of people from 193 nations together to raise awareness about the importance of protecting the environment for future generations.
Everyone at Green APU is committed to making the world a cleaner place for us all to enjoy. In this blog, let’s look at four distinct ways Green APU has had a positive impact on the environment.
Fuel Savings
When it comes to fuel savings, Green APU leads the industry in being Earth-friendly. Historically, truck drivers have idled their diesel engines during off time to power the cab’s heat, cooling, and electricity.
According to the EPA, the typical diesel truck burns over a gallon of fuel for every hour the vehicle idles. That’s 8 hours a day, 40 hours per week, and 2,000 hours annually.
The Green APU on the other hand, consumes just over ¼ of a gallon per hour. Not only is this 75% decrease in consumption significant in fuel cost savings, but also in the reduction of emissions being released into the atmosphere.
Extending the Life of the Diesel Particulate Filter (DPF)
Every diesel truck manufactured since 2007 has a Diesel Particulate Filter (DPF), designed to reduce the amount of emissions released into the atmosphere.
As more fuel is consumed, the DPF must work harder to trap pollutants. Eventually, DPFs must be replaced, as they get clogged and lose their effectiveness.
Green APU will extend the use of your DPF by reducing the number of pollutants it must trap over its service life. Longer-lasting DPFs reduce the number of replacement units that must be manufactured, which cuts down on scrap, waste, and landfill usage during the production process.
Battery Service Life
A truck’s batteries are critical to its operation. In extremely hot or wintry weather, batteries can wear down, decreasing their service life. Keeping a truck’s batteries charged will not only optimize their performance, but also extend longevity.
In addition to powering the heat, A/C, and electricity for your truck while not on the road, the Green APU also keeps your batteries fully charged. This will do wonders for getting more years of reliable service from them.
Celebrating Earth Day – The Green APU Way
From our first day in business, we have been committed to manufacturing the best APU the industry has to offer. We take great pride that thousands of our fuel-efficient, reliable, and tough-as-nails APUs are in service each day across the U.S. and North America.
As another Earth Day approaches, every driver with a Green APU on board their truck can feel proud they are doing their part to make the world a little greener.
Happy Earth Day!

Let’s check in with Green APU Rally USA Racing driver Patrick Gruszka about his latest run at Rally in the 100 Acre Wood.
Tell Us About the Race
“This race is really known for its water crossings, but this year, everything dried up. That made the experience a lot different. This was the 2nd year at this event with the Hyundai i20 car.”
How Did It Go for the Green APU Rally USA Team?
“We placed 4th, right behind Travis Pastrana, and got 1st place in RC2.”
What Was Different About This Race Compared to Others?
“As I mentioned, this event is famous for its water crossings, but not this year. Even the large crossing dried up. Hopefully, the water will be back next year!”
What Challenges Came Up?
“The car has boost issues, which hindered our performance. We also hit some large rocks, which is never good.”
Are You Pleased with the Outcome?
“We were in our own zone, with Travis Pastrana 5 minutes ahead of us, and the guy behind us at 2 minutes. We had a solid finish, so I’m happy with the results.”
Anything You Want to Improve or Change?
“This was our first event in the Hyundai i20 this year, so there’s plenty of room for improvement, which will come with more driving time.”
What Lessons Did You Take Away from This Race?
“We learned the hard way that large rocks break things and cause flat tires! This was my first race where I had to drive on a flat to finish the stage. The right front blew out and I was riding on the wheel. It wasn’t fun, but it gave me some practice with driving at speed with a flat, and tire changes!”