Residential · Split & multi-head

Residential Air Conditioning

Bedrooms, living areas and whole homes on single or multi-head splits. We run a room-by-room load calc before we name a kW, because a unit sized off the floor plan is either short-cycling and wasting power or never quite keeping up.

Photo · residential air conditioning job
Why the coil spec is a line item

A block from the surf, the coil decides everything.

Standard coil
Year 1Looks fine
Blue-fin / treated
Year 1Holding
Salt exposure
Year 1

The standard coil is cheaper today. The treated coil is cheaper by year four.

Scope

What this job includes.

  • Single split systems for one room or zone
  • Multi-head splits, two to five indoor heads on one outdoor unit
  • Replacement and upgrade of tired or failed systems
  • Coastal coil spec on every salt-zone install
  • Dedicated electrical circuit and isolator, done in-house
Our system: Daikin and Mitsubishi inverter splits as standard, sized from the load calc, with a blue-fin or treated condenser on coastal installs.
How we quote it

The same 7 lines, every time.

Whatever the surface, your quote splits the work the same honest way, so you can see exactly what you’re paying for.

The 7-line quote
  1. 1 Heat-load calculation. Room by room: floor area, glazing, orientation, ceiling height and insulation. The kW comes from the calc, not a guess.
  2. 2 Equipment named. Exact make, model, series and capacity on the quote. “A good Japanese one” is not a model number.
  3. 3 Placement plan. Where the indoor and outdoor units go: airflow, noise, service access and how far from the salt.
  4. 4 Coastal coil spec. Salt-zone installs get a blue-fin or anti-corrosion-treated condenser. The standard coil is what rusts out in three years.
  5. 5 Electrical + dedicated circuit. Single-phase or three-phase, the isolator, the circuit and the switchboard check. We hold the electrical licence, so it is our line, not yours.
  6. 6 Pipework, drainage + penetrations. Refrigerant line length and lagging, the condensate run, and every wall penetration sealed against weather and vermin.
  7. 7 Commissioning + compliance. Gas charge weighed and logged, system commissioned to spec, ARC paperwork issued and the manufacturer warranty registered.
If a quote doesn’t show these lines, you can’t compare it, and you don’t know what’s been cut.
How it runs

What happens, step by step.

1

Site visit + load calc

We measure the rooms, check the glazing and the switchboard, and run the heat-load calculation before we quote a kW.

2

Itemised quote

The seven-line install quote: sized equipment named, coil spec, electrical, pipework and commissioning each on their own line.

3

Equipment + contract

You sign off the model and the scope. We order, confirm the install window and take a deposit on letterhead.

4

Install day

Indoor and outdoor units mounted, lines run and lagged, penetrations sealed, condensate drained to fall. Drop sheets and a clean-down.

5

Electrical + commissioning

Dedicated circuit and isolator connected, system evacuated and charged by weight, then commissioned and tested under load.

6

Handover + paperwork

We walk you through the controls, hand over the ARC compliance paperwork, register the warranty and book the first service.

Licensed, covered, warranted

The paperwork behind the price.

ARC AU45782, QBCC and NSW licensed, Public liability to $20M, and a 6-year workmanship workmanship warranty, all in writing, all on request.

Mara walks through exactly what’s covered: the refrigerant authorisation you can verify, the licences for both sides of the border, the cover that protects your property, and the warranty that names its own exclusions instead of hiding them.

The licence, the cover, the warranty, and how to check each one.
Proof · recent work

Residential Air Conditioning jobs we’ve done.

Salt-corroded standard split unit on a Palm Beach beach house before Saltline replaces it with a multi-head coastal-spec system Before
Palm Beach beach house after Saltline installs the multi-head coastal-spec system After
Multi-head split, beach house, Palm Beach. Four heads, one outdoor unit, blue-fin coastal coil. 1 day.
Before
After
Single split, master bedroom, Miami. Sized to the room, quiet head off the bedhead wall, treated coil. Half a day.
Before
After
Two-storey multi-head, Coolangatta. Lines run in the cavity, every penetration sealed, coastal coil. 2 days.
Questions, answered

Residential Air Conditioning: common questions.

What size air conditioner do I actually need?
The honest answer is that it depends on the room, not the price list. We measure floor area, glazing, orientation, ceiling height and insulation and run a load calc. A west-facing glass living room and a south bedroom of the same size need very different kW. Sizing off the floor plan is how you end up oversized and short-cycling, or undersized and never comfortable.
Single split or multi-head for a few rooms?
A single split serves one room or open zone well and cheaply. For three or four rooms a multi-head puts independent control in each room from one outdoor unit, which suits homes with no roof space for ducting. We will lay out both on the quote so you can see the cost and the trade-off.
How loud is it, inside and out?
Modern inverter heads are quiet inside; the noise people notice is usually the outdoor unit. Placement is on the quote: we keep it off bedroom windows and the neighbour’s boundary where we can, and note the unit’s rated decibels so there are no surprises.
What does it cost to run, not just to buy?
Running cost comes from correct sizing and an inverter system, not from buying the smallest unit. An oversized system cycles on and off and costs more to run than a right-sized one. We give you the rated efficiency on the model we quote so you can compare running cost, not just sticker price.
Will it survive this close to the beach?
Only if the coil is spec’d for it. Standard condensers corrode in the salt zone and can fail within a few years. On coastal installs we quote a blue-fin or anti-corrosion-treated outdoor unit and the right placement, and we say so on the line item. It is the single biggest longevity decision on the coast.
Who does the electrical work?
We do. Saltline holds the electrical licence, so the dedicated circuit, the isolator and the connection are our line on the quote, not a separate sparky you have to chase. One contractor, one accountable install.
Is a no-name bargain unit as good as a Daikin or Mitsubishi?
A warranty is only as good as the service network behind it. Tier-one brands like Daikin and Mitsubishi have national parts and service, so a claim in year five actually gets honoured. No-name bargain units are cheaper on the quote, but the importer can disappear and the warranty with it. We quote the named brand and tell you the trade-off honestly.
What certificates and paperwork do I get?
On handover you get the electrical compliance certificate for the connection, the ARC refrigerant record for the gas work, and the manufacturer warranty registered in your name. Keep them: they prove the install was done by both licences, and you will want them when you sell the house.
Get started

Get a free, itemised quote you can actually read.

Tell us what you need. We’ll book a walkthrough and send a quote with the work itemised, not just a number.

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