Mitsubishi Heavy Industries

Mitsubishi Heavy Industries vs Mitsubishi Electric: what's the difference?

They are different companies. Mitsubishi Heavy Industries Air-Conditioners Australia (MHIAA) sells the Heavy Industries product, with its own ranges, dealers and warranty. Mitsubishi Electric Australia is a separate business with separate products. The shared name is a family history, not a shared factory.

For a buyer, the practical difference is price and network. MHI usually quotes a little cheaper for similar capacity. Mitsubishi Electric has the bigger dealer footprint. Both carry 5-year parts and labour warranties on residential installs. Our head-to-head comparison goes through it model by model.

Mitsubishi Heavy Industries split system range guide

MHIAA's residential wall splits are sold under series names rather than model codes. The main ones on its site are these:

In the popular 2.5 to 7 kW sizes, MHI's value is at its sharpest. Size the room with our calculator, check what that size costs in our split system cost guide, then get an MHI quoted against whatever else you're considering.

MHI ducted and multi-split systems

MHIAA sells residential ducted systems, including the FDUA series, and a KX variable refrigerant flow range for larger homes. It also lists multi-split systems that run several indoor units from one outdoor unit. For a single-storey three-bedroom home, ducted typically costs $9,000 to $16,000 installed; a two-head multi-split $4,500 to $7,500. Our ducted cost guide covers what changes those numbers. If you're weighing ducted against multi-split, ask for a quote with both options priced.

MHI air conditioner remote symbols and error codes

The MHI remote uses the standard mode icons, explained in our modes and symbols guide. User manuals for current and older models, including the Bronte series, are published in the documents section of MHIAA's site.

MHI wall splits show faults as a sequence of flashes on the indoor unit's RUN and TIMER lights rather than as a code on the remote. MHIAA's service material explains that the number of flashes on each light maps to a code in its error table. Counting them is a technician's job, so we don't list codes here. A slow, steady flash on one lamp can be a filter-clean reminder, which you can deal with yourself. Otherwise, switch off at the isolator for a few minutes. If the flashing returns, book a service.

If your MHI is more than 10 to 12 years old, or keeps flashing the same fault, a replacement may be the better spend. A new bedroom split costs about $1,500 to $2,500 installed in 2026 and a 7 kW living-room unit $2,600 to $3,900, on a standard install. See the split system cost guide or get up to three local quotes to compare.

MHI warranty and service in Australia

MHIAA gives air conditioners installed in residential applications a 5-year parts and labour warranty. It states that the warranty is void if the system is put in by an unlicensed installer. Use an ARCtick-licensed refrigeration installer and a licensed electrician, as our ARCtick guide explains. Warranty service requests go through the support section of MHIAA's site.

Service coverage is the one real question with MHI. In the capitals it is routine; in smaller regional towns, ask the installer who does MHI warranty work locally before you sign.