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Mitsubishi Heavy Industries air conditioning and heatingWhere the unit goes matters to this warranty.

Mitsubishi Heavy Industries air conditioners are sold here by Mitsubishi Heavy Industries Air-Conditioners Australia, or MHIAA, a different business from Mitsubishi Electric. MHIAA gives its residential splits and ducted systems 5 years on parts, labour and the compressor. Its terms also set rules about where a unit can sit, so read them before anyone picks a spot on the wall.

Updated 29 October 2026 · Written by the Find My Aircon team · How we check our facts

Isn't this the same as Mitsubishi Electric?

No, and it's an easy mix-up. MHIAA (ABN 92 133 980 275) is headquartered in Sydney. Mitsubishi Heavy Industries' technical review describes it as a wholly owned subsidiary of Mitsubishi Heavy Industries Thermal Systems, with branch offices around Australia and after sales service here and in New Zealand.

Mitsubishi Electric is a separate company with its own range and warranty. Make sure the badge on the unit, the quote and the warranty card all name the same one. We sell neither brand and aren't a dealer for either.

What MHIAA sells for homes

MHIAA's website lists split systems, ducted systems and multi-split systems for homes, and keeps its commercial products on a separate site. The warranty terms below are for a residential application, so check that's how your quote describes the job.

The warranty, and when it starts

MHIAA's warranty terms, effective January 2025, give 5 years parts, labour and compressor on its SR and DX, FD and KX 1:1 series in a residential application. The period runs from the purchase date on your tax invoice, and these terms apply to equipment supplied after 1 January 2025.

The terms require the equipment to be "installed and maintained by a suitably licensed and qualified person", following the manufacturer's instructions and Australian Standards. Faults caused by poor or incorrect installation are excluded.

MHIAA encourages you to register online so claims can be handled faster. Its terms don't say registration is required.

MHIAA's rules on where the unit goes

  • It "must be safely accessible with a 1.7 meter ladder". Any extra access, and the cost of making access safe, falls to the owner.
  • Corrosive environments are excluded. MHIAA names coastal, mining and sulphur areas, and swimming pools.
  • In sea air or industrial pollution, applying extra corrosion protection is the owner's responsibility.
  • Cover stays at the original installation site, and units in a boat, bus or caravan are excluded.

The ladder rule is for technicians, not you

MHIAA's 1.7 metre ladder rule is about how a technician reaches the unit. It isn't a reason to climb up yourself. If a high unit looks wrong, look from the ground and book a technician, and never get onto a roof to check an outdoor unit.

Ask before the installer drills

  • Which series is this unit, and is it quoted for a residential application?
  • Can both units be reached safely with a 1.7 metre ladder once they're up?
  • Is the spot near a pool, or in sea spray? What protection would you add?
  • Will the tax invoice show the purchase date?
  • Who will maintain it, and what licences do they hold?

Yours to do, and theirs

You can

  • Register the unit online once it's in, so a claim moves faster.
  • Keep the tax invoice. MHIAA counts your 5 years from its purchase date.
  • Download the user manual from MHIAA's support pages.
  • Keep the outdoor unit clear, and check on it from the ground.

Leave to a licensed installer

  • Choosing a position that meets MHIAA's access and environment rules.
  • Installing to the manufacturer's instructions and Australian Standards.
  • Ongoing maintenance, which the terms say must be done by a suitably licensed and qualified person.

What we'd do

Where we'd start

We'd agree on the outdoor unit's position before anything else: within reach of a 1.7 metre ladder, away from the pool equipment, and out of direct sea spray if the block allows it. A split specialist can usually find a spot that suits the airflow, the neighbours and the warranty at once, if you ask them to weigh all three. Then we'd register online the week it goes in, and keep the tax invoice with a copy of the warranty terms.

Questions people ask

Is Mitsubishi Heavy Industries the same company as Mitsubishi Electric?
No. Mitsubishi Heavy Industries air conditioners come through MHIAA, a separate business with its own warranty and service. Check which name is on your warranty card.
Does the MHIAA warranty cover the compressor?
Yes. Its terms give 5 years parts, labour and compressor on the SR and DX, FD and KX 1:1 series in a residential application.
My outdoor unit is up on a second-storey wall. Is that a problem?
It can be. MHIAA's terms say the unit must be safely reachable with a 1.7 metre ladder, and any extra access is the owner's responsibility.

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Where this information comes from

We don't publish prices. Every home is different, so an installer's written quote is the only real number. How we write and check these pages.

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