What Brisbane changes for a small business
Damp air through the front door
Afternoon humidity at Brisbane City Centre peaks at 59% in February. Mitsubishi Electric warns against long runs in high humidity or with an outside door open, because condensation may drip, so a shop door that's open all day needs thinking about at the design stage.
One licence for homes and businesses
QBCC's definition of mechanical services work covers heating and cooling systems in commercial and residential buildings alike, and it needs a QBCC licence at any job value.
Ground-floor sites and floods
The 2022 flood reached 23,400 properties across the Brisbane council area. Get Ready Queensland's flood advice includes raising air conditioner units and switchboards above the flood level, which applies to a ground-floor shop as much as a house.
Neighbours upstairs and next door
Queensland's default noise standard covers air conditioning units at any affected premises: no more than 5 dB(A) above background from 7am to 10pm, and 3 dB(A) overnight, unless the council sets its own. A rooftop unit near flats needs placing with that in mind.
What makes a small commercial job bigger
People, equipment and glass. A café kitchen, a shopfront facing west or a room full of computers adds heat that a home heat load wouldn't count. Mitsubishi Electric's heat load factors include orientation, windows and construction, and a commercial heat load should add the people and equipment too.
Hours matter as well. If the system runs all day through the trading week, work out running costs from the input power in kW times your trading hours times your electricity rate, or use our running cost tool.
Server and comms rooms are their own case. Mitsubishi Electric treats installations in server or communication rooms as commercial, with 1 year parts and labour, so ask about warranty before you choose a unit.
Questions for a Brisbane commercial installer
- Which QBCC mechanical services licence class do you hold? QBCC lists unlimited design, limited design and occupational.
- Is this model warranted for business use, and for how long?
- Does the landlord or building allow units on the roof or rear wall?
- Have you allowed for the door, the people and the equipment in the heat load?
- Can you set up a yearly service schedule from the start?
What we'd do
What we'd do
For a small Brisbane shop or office, we'd treat it like a home install with long hours: a heat load that counts the people, the equipment and the open door, a model warranted for business use, and a yearly service booked from day one. For anything bigger than a handful of units, we'd go to a commercial mechanical contractor. Tell us about the job either way and we'll say plainly whether we can help.
