Thinking about adding a home elevator for comfort and accessibility? 

With energy costs on the rise, it’s smart to ask: How efficient are they?

Understanding how different elevator systems use energy can help you choose an option that aligns with your budget, lifestyle, and sustainability goals. 

Below, we explore the energy efficiency of traditional elevators compared to Cube Lifts’ pneumatic vacuum elevators.

How Traditional Home Elevators Consume Energy

Most conventional residential elevators operate with either hydraulic or cable-driven systems. While both are reliable, they come with varying energy demands.

Hydraulic Elevators

• How they work: Hydraulic elevators use a motor-driven pump to push hydraulic fluid into a cylinder, forcing a piston to lift the elevator car.
• Energy use: They consume electricity each time the car moves upward. When descending, the system releases fluid back into a reservoir but still uses some power to control the descent safely.
• Efficiency drawbacks: Hydraulic systems often lose energy through heat dissipation in the fluid, and require oil changes and maintenance to maintain optimal performance.

Cable Elevators

• How they work: Cable or traction elevators operate with steel ropes attached to a counterweight system powered by an electric motor.
• Energy use: They require energy to lift the car and manage the counterweight, but are generally more efficient than hydraulic elevators for multi-floor travel.
• Efficiency drawbacks: Cable systems require machine rooms or overhead clearance, adding to construction materials and energy use in climate control of those areas.

Both traditional systems can be energy-intensive, especially if used frequently throughout the day, which is common in multi-generational or mobility-focused homes.

Why Pneumatic Vacuum Elevators Are More Energy Efficient

Cube Lifts’ pneumatic vacuum elevators are designed with energy efficiency at their core, offering a smarter choice for modern homeowners.

Powered by Air Pressure, Not Heavy Machinery

Pneumatic elevators use air pressure differences to move the cabin between floors. Here’s how:

• Ascending: The system creates a vacuum above the cabin, lowering air pressure so the higher pressure beneath pushes the elevator car upward. An electric turbine generator powers this vacuum process.
• Descending: The car descends using gravity and controlled air pressure equalization, requiring little to no energy input.

Key Energy Efficiency Benefits

• Consumes energy only for ascent: Unlike hydraulic and cable elevators that use power in both directions, pneumatic elevators use electricity only when going up.
• No machine room or pit needed: Their self-contained design reduces construction materials, space conditioning energy, and environmental footprint.
• Minimal standby power: Pneumatic systems don’t rely on motors for constant tension or hydraulic fluid pressurization, lowering idle energy use.

How Much Energy Does a Pneumatic Elevator Use?

Typical pneumatic vacuum elevators (PVE models) use around 3.5 to 5 kVA during ascent, depending on model size (single passenger vs wheelchair-accessible).

kVA vs kW: kVA is apparent power, and in residential use, it roughly equates to kW for these elevators, but actual kW may be slightly lower due to power factor differences.

Appliance comparison:

• Washer: ~0.5-1 kW while heating water
• Dryer: ~2-5 kW depending on model
• Oven: ~2-5 kW when heating

Consume negligible energy when idle or descending.

Do not require hydraulic oil, eliminating maintenance waste and environmental disposal concerns.

In practical terms, their monthly electricity cost is often less than running a standard household appliance daily, depending on usage frequency.

Energy Efficiency and Sustainability

Choosing a pneumatic vacuum elevator supports your home’s overall energy goals:

Lower Carbon Footprint

Because pneumatic elevators consume less electricity and require fewer materials during installation, they reduce your home’s total embodied energy.

Cost Savings Over Time

Lower operating costs mean reduced utility bills throughout the life of your elevator, adding up to significant savings in the long term.

Future-Proofing for Green Home Trends

As homebuyers increasingly prioritize sustainable features, an energy-efficient elevator can enhance your property’s appeal in future real estate markets.

Last Thoughts

If energy efficiency is a priority in your home improvement projects, Cube Lifts’ pneumatic elevators provide an optimal solution. They combine sleek design, smooth operation, and significant energy savings compared to traditional hydraulic or cable elevators.

Choosing a Cube Lifts elevator means investing in:

• Lower utility bills
• Reduced environmental impact
• Future-proofed accessibility for your family

Contact Cube Lifts today to learn how our pneumatic vacuum elevators can improve your lifestyle while keeping energy costs down.