If you’ve ever worked in a construction, facility maintenance, or industrial setting during the winter months, you know cold weather doesn’t hit pause on essential work. For teams that rely on boom lifts to reach high places—like repairing warehouse lighting, trimming overhead tree branches, or installing equipment on a manufacturing facility’s roof—operating these machines in freezing temperatures comes with unique challenges. As a boom lift supplier who’s worked with hundreds of site managers and operators across different climates, I’ve seen firsthand how skipping proper cold-weather protocols leads to unnecessary breakdowns, safety risks, and costly work delays. This post breaks down the science behind operating a boom lift in cold weather, the mistakes that are easy to miss, and the steps we walk every customer through to keep their teams safe and machines running when the temperature drops. Boom Lift
First, let’s start with why cold weather changes how your boom lift works, beyond just “it feels colder.” Most boom lifts rely on hydraulic fluids, lithium-ion or lead-acid batteries, rubber components, and even metal structural parts, all of which behave differently when temperatures hover around 32°F (0°C) or lower. Hydraulic fluid, for example, is designed to stay at a specific viscosity to move the lift’s arms, rotators, and platform smoothly. When it gets too cold, the fluid thickens—thick enough that the motor can’t build the pressure needed to extend the boom or lift the platform. I once had a customer call us in mid-December, panicking because their 40-foot electric boom wouldn’t move off the loading dock. Their operator had tried to extend the boom first thing that morning, and the hydraulic system had seized briefly, triggering an error code that shut everything down. The issue? They were using standard hydraulic fluid rated for 40°F, which was too thin to withstand the 22°F overnight low. That’s a common mistake: many operators grab whatever fluid is available without checking cold-weather compatibility.
Batteries are another big variable here. Lead-acid batteries, which are still common in many older boom lifts, lose about 60% of their cranking power at 0°F compared to their performance at 77°F. Lithium-ion batteries, which are growing in popularity, do better in cold—they only lose about 20% of their capacity at freezing—but they’re not immune. We’ve seen operators leave lithium-ion boom lifts parked outside overnight in 10°F weather, then wonder why the unit dies mid-job an hour after start. The battery’s chemical reactions slow down when cold, so even if it’s fully charged, it can’t deliver the power needed to run the lift’s motors, controls, and hydraulic pump until it warms up a bit. Rubber components, like the tires, seal around the hydraulic hoses, and the platform’s access gates, also stiffen in cold. A tire that feels soft and pliable at 70°F becomes hard and brittle in freezing temps, raising the risk of a blowout, while hydraulic seals that expand with heat shrink in cold, leading to tiny leaks over time that can cause pressure drops. Even metal parts: the pins that connect the boom’s sections can seize up if they’re not lubricated with a cold-weather grease, since standard grease thickens and doesn’t penetrate the pin’s joint.
So how do you mitigate all these issues? It starts with pre-operation checks that are tailored to cold weather, not the generic ones you run in summer. The first step, and the one many people skip, is pre-heating the machine if it’s been parked outside. For electric boom lifts, that means plugging in the block heater (if equipped) at least 2-3 hours before use. For diesel-powered boom lifts, most have an engine block heater and a fuel heater, but if yours doesn’t, a portable electric heater pointed at the engine compartment works too—just make sure you keep flammable materials away. Don’t skip pre-heating even if the machine seemed to run fine the day before; a drop of 10 degrees overnight can drain a battery enough to make it unreliable, and thicken hydraulic fluid just enough to cause a problem.
Next, always check the fluid levels and types. Hydraulic fluid is the most critical here. We recommend that any customer operating in temperatures below 40°F switches to a low-viscosity, cold-weather hydraulic fluid specifically rated for aerial work platforms. Avoid using engine oil or transmission fluid as a substitute—those aren’t formulated to handle the pressure cycles of boom lift hydraulics. For fuel in diesel models, use winter diesel fuel. Regular diesel has a higher cloud point, meaning it starts to turn waxy at around 32°F, which can clog the fuel filter and lines. Winter diesel has additives that lower the cloud point to around -10°F, preventing that waxy buildup. We’ve seen customers who tried to add kerosene to regular diesel to “thin it out” end up with fuel system damage—those additives are specific, and mixing them incorrectly does more harm than good. For batteries, make sure the terminals are clean and tight before every cold shift. Corrosion on terminals can drain power even if the battery is fully charged, so a quick scrub with a wire brush and a coat of anti-corrosion spray will go a long way.
Then there’s the operation itself, once you’re ready to use the boom lift. Don’t jump into full movement as soon as you start the machine. Let it idle for 5-10 minutes to warm up, and gently run each function—extend the boom a few feet, rotate the platform, lift it a few feet off the ground—before you get to full speed or height. This gives the hydraulic fluid a chance to warm up and thin out, reducing stress on the motor and seals. We had an operator in northern Wisconsin a couple years ago who started a shift by extending his 60-foot boom fully immediately, and the thick hydraulic fluid caused a pressure spike that blew a seal on the main boom cylinder, costing $1,800 in parts and a full day of downtime. Taking that extra two minutes to test functions would have avoided all that. Also, be mindful of how the boom lift handles on cold, icy ground. Winter brings frozen, uneven surfaces, and even outrigger pads (required for most boom lifts over 30 feet) can slip on ice if they’re not set on a non-slip surface. Clear snow and ice from the work area under the outriggers before setting them down, and make sure they’re fully extended and locked—never use shorter outriggers in cold weather to save time, because the reduced stability is a major safety risk.
Safety protocols shift too in cold weather, beyond just the machine itself. Operators should wear cold-weather gear that doesn’t restrict movement—thick gloves are a must, but make sure they’re dexterous enough to operate the lift’s controls, and a warm jacket without loose sleeves that could catch on the boom’s edges. Also, cold weather can mask signs of fatigue and hypothermia, especially if workers are standing on the platform for long periods. We recommend that teams schedule regular breaks, every 45-60 minutes, to get out of the cold, warm up, and check in with each other. A tired operator is more likely to rush through pre-checks or make a mistake when operating the lift, which increases risk.
Another thing we emphasize to customers is machine storage when not in use. If you’re not running the boom lift over the weekend, or if it’s going to be parked for more than a day in freezing temps, there are steps to take to prevent damage. For electric models, charge the battery to 100% before storing it, and keep it plugged in to a trickle charger—this stops the battery from discharging in cold weather, which can permanently damage its capacity. For diesel models, drain the fuel tank or add a fuel stabilizer to prevent wax buildup, and store the machine in a heated garage if possible. If outdoor storage is your only option, cover the hydraulic lines and battery with insulated blankets to keep them from getting too cold. We’ve had a customer who left their boom outside for two weeks in 5°F weather, no insulation, and when they tried to use it, the battery was completely dead and the hydraulic fluid had thickened so much the pump wouldn’t run—they ended up having to tow it to a service shop, which cost double what the insulation would have.
I’ve talked to so many operators who think cold-weather operation is just “deal with it and keep going,” but that’s not true. The small, consistent steps—checking fluid types, pre-heating, testing functions, clearing ground around outriggers—are what prevent breakdowns and keep everyone safe. As a boom lift supplier, our job isn’t just to sell you a machine; it’s to make sure you know how to use it properly, no matter the weather. We work with every customer to customize cold-weather checklists, provide cold-weather fluids and parts, and even offer on-site training for winter operation, because we know that a well-maintained boom lift in cold weather saves you time, money, and stress.
If your team is gearing up for cold-weather work and you’re looking to refresh your boom lift’s fleet, replace an older model that’s struggling in low temps, or just want a custom cold-weather operation checklist tailored to your worksite, we’re here to help. Reach out to our team to discuss your needs and get the support you deserve for winter-ready boom lift operation.
Towable Scissor Lifts References:
ANSI A92.6-2020, American National Standard for Mobile Elevating Work Platforms – Safety Requirements
OSHA 29 CFR 1926.451, Safety and Health Regulations for Construction – Aerial Lifts
International Society of Automation (ISA) Cold Weather Equipment Operation Guidelines
Boom Lift Manufacturers Association (BLMA) Cold-Weather Maintenance Best Practices
Shandong Zhongke Huali Machinery Co., Ltd.
As one of the most professional boom lift manufacturers and suppliers in China, we also support customized service. We warmly welcome you to wholesale discount boom lift in stock here from our factory. For price consultation, contact us.
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