Maximising Cold Chain Efficiency with the Ulti DuoTherm Freezer Door

Maintaining strict temperature control at the threshold between cold stores and ambient environments is a challenge faced by many New Zealand businesses in the food, pharmaceutical, and logistics sectors. At Ulti Group, we’re dedicated to helping you overcome these challenges with innovative, effective solutions like the Ulti DuoTherm Air Freezer Door.

Let’s dive into how this smart, dual-skin technology works to protect your cold chain while improving operational efficiency.

 

What Makes the Ulti DuoTherm Air Model Unique?

The Ulti DuoTherm is not your average freezer door. It’s equipped with an integrated air curtain system that activates every time the door is raised. This isn’t just about airflow—it’s a precision-engineered barrier designed to minimise thermal exchange between cold and warm zones.

Here’s how it works:

• When the door lifts, the air curtain kicks in.
• Air is blown from each side of the doorway, creating pressure zones.
• At the bottom, this airflow is directed back into the cold store, counteracting the tendency of cold air to escape.
• At the top, air is channelled towards the wall side of the warm room, pushing the warmer air away from the cold zone.

This two-way airflow acts like a protective buffer, significantly reducing air transfer between environments. In practice, that means less energy loss, better temperature control, and ultimately, a more cost-effective and sustainable operation.

 

Why Air Curtains Matter in Freezer Door Design

In a typical cold store setup, cold air naturally sinks and flows along the floor, while warmer air rises and infiltrates through the upper parts of the doorway. Traditional freezer doors often struggle to prevent this imbalance.

By introducing air pressure from both sides, the Ulti DuoTherm Air model addresses this issue head-on. The airflow effectively pushes back against temperature shifts, slowing down the mixing of air masses. The result is a stable internal temperature, less frost build-up, and lower refrigeration load.

This makes the Ulti DuoTherm particularly valuable for high-traffic areas where doors are opened frequently, such as loading docks, processing zones, or walk-in freezers in supermarkets and distribution centres.

Built for NZ Conditions, Backed by Ulti Group Expertise

At Ulti Group, we understand the unique challenges of temperature-sensitive operations in New Zealand’s varied climate. The Ulti DuoTherm Air is designed with these conditions in mind, combining robust insulation with intelligent airflow technology to deliver unmatched performance.

Whether you’re retrofitting an existing facility or planning a new build, this door system offers a proven way to improve efficiency and protect product integrity. And as always, it’s supported by our dedicated team who understand what it takes to keep your operation running smoothly.

 

FAQs

What industries benefit most from the Ulti Duo Therm Air model?
This door is ideal for food processing, cold storage, pharmaceuticals, and any industry where maintaining strict temperature control is essential.

How does the air curtain reduce energy costs?
By minimising air exchange between zones, the air curtain reduces the workload on refrigeration units, leading to significant energy savings over time.

Can this system be retrofitted into existing facilities?
Yes, the Ulti DuoTherm Air model can be integrated into existing cold storage infrastructure with custom fit-outs tailored to your needs.

Is it compatible with automated operations?
Absolutely. The door system is compatible with automated triggers, high-speed open/close cycles, and safety sensors, ensuring seamless integration into modern workflows.

 

Want to learn more or see how the Ulti DuoTherm Air can enhance your facility? Get in touch with us today—we’d love to help you find the right solution.