LIMS Aeroseal

Duct sealing from the inside for your property

Seal your ducts from the inside

Give your building healthier air, lower energy bills, and better comfort with Aeroseal duct sealing from LIMS HVAC. Aeroseal is an award‑winning technology that seals leaks from inside the ductwork, reaching places that are difficult or impossible to access with traditional methods.

We bring this proven technology to New Zealand homes, commercial buildings, and healthcare facilities as a complete, end‑to‑end service.

Residences

Say goodbye to dirty air, allergens, and contaminants blowing all over your apartments. Aeroseal "finds" and seals all leaks up to 15mm from the inside of the duct, greatly reducing labour

Commercial Properties

Increase energy efficiency while improving comfort and indoor air quality. Improvements in air tightness are usually 80-90% and sealed leaks can withstand up to 2000Pa

Hospitals & Clinics

Leaky ductwork is a key contributor to poor indoor air quality, directly impacting the health of your patients. Usually around 30% cheaper than alternatives, with payback times averaging 1-4 years

What is Aeroseal?

Aeroseal is a patented duct sealing process that uses a mist of microscopic polymer particles injected into your duct system. Under controlled pressure, these particles are carried by the airflow and automatically “find” and seal leaks up to 15 mm from the inside.

Because the process works internally, there is no need to dismantle long duct runs, remove ceiling tiles extensively, or disrupt building occupants.

Visit our website for more info: www.lims-aeroseal.co.nz

Key performance characteristics:

  • Typical improvements in air tightness of 80–90%
  • Sealed leaks can withstand up to 2000 Pa
  • Usually around 30% cheaper than manual alternatives
  • Typical payback periods of 1–4 years, depending on system size and operating hours
  • The Aeroseal sealant meets European VOC regulations and has achieved French VOC class A+.

How does Aeroseal work?

If you are facing issues with duct leakage, poor airflows, or rising energy costs, Aeroseal may be the most effective solution for your building.

Case Studies

Discover how we've helped our clients succeed

City Rail Link

On a project as massive as the Auckland City Rail Link, ventilation isn’t just about comfort—it’s about safety and operational integrity. During the commissioning phase at the K Road and Aotea stations, several critical exhaust systems—including tunnel drainage, UPS, and emergency exhausts—showed significantly high leakage rates.

Read case study

Auckland Int. Airport

We were able to help our customer attain satisfactory airtightness on all counts due to the innovative nature of the Aeroseal nanotech compound and applicators. LIMS Aeroseal performed seventeen seals/certifications at the Auckland International Airport.

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Choose Aeroseal for your next project

LIMS HVAC combines deep local HVAC expertise with proven Aeroseal project experience across New Zealand. We understand the realities of working in live, occupied buildings, critical environments, and complex sites. If you are facing issues with duct leakage, poor airflows, or rising energy costs, Aeroseal may be the most effective solution for your building.
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