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Trade 17 of 33Updated May 2026

A research dossier · 41 NSW + 32 QLD + 31 VIC homeowner posts · refrigeration ticket + electrical licence verified

Hiring an HVAC Installer
is two trades in one truck.

Aircon install needs both a refrigeration ticket and an electrical licence. One person can hold both, or two trades can come to site — but the work needs both. The cowboy install does the refrigeration without the electrical, or the other way around, and you find out the day the warranty claim gets denied. Undersizing is the second trap: the cheap quote on a 3-bedroom is almost always under-sized for the actual heat load, and you spend the next decade running it at full throttle.

2

Tickets needed: refrigeration + electrical.

30%

Common undersize cushion the cheap quote skips.

Sep–Nov

Booking window where prices spike + installs slip.

How this page was built

A research dossier, not a referral page.

Sources

Reddit (r/sydney · r/melbourne · r/AusFinance), Whirlpool, ProductReview, AIRAH (Australian Institute of Refrigeration, Air conditioning + Heating), ARC (Australian Refrigeration Council) installer registry.

Verification

Sizing calculations cross-checked against AIRAH heat-load rules of thumb. Refrigeration handling licence verified through ARCtick (the national refrigeration trade authorisation).

Funding

No installer pays for placement. No referral fees. Funded by the supply-side flyer service at flyers.needatrade.com.au.

Before we start

Two tickets, one job.
Wrong on either = wrong install.

HVAC sits at the intersection of two regulated trades — refrigeration and electrical. A licensed refrigeration mechanic handles the gas-charged refrigerant lines, the system commissioning, and the warranty paperwork. A licensed electrician handles the power supply, switchboard, and isolator. Cowboys try to do both on one ticket. The unit fails inside warranty and the manufacturer denies the claim because the install wasn't fully licensed.

The 10 questions below force both tickets into the conversation before you pay. A working operator welcomes them — they have both, or coordinate with the second trade. A cowboy stalls — the cheap install depends on you not asking.

If they can't name the ARCtick number and the electrical licence number, you don't have an aircon installer — you have someone with a drill and a ladder.

01

How much should it really cost?

Aircon pricing splits cleanly into the unit + the install. The undersized quote is almost always selling you the wrong unit at the right price.

A working aircon quote has six lines. The cheap quote merges them and lets you assume the savings come from somewhere harmless.

Six lines a real quote should show

  • 1Heat-load calculation. The kW number must be sized to your room's heat load, not eyeballed.
  • 2Unit brand + model + kW. Daikin / Mitsubishi / Fujitsu / Panasonic / Hisense. Cooling kW + heating kW separate.
  • 3Refrigeration install. Pipe length, brazing, vacuum, charge, commissioning.
  • 4Electrical install. Power supply, isolator, dedicated circuit if needed.
  • 5Compliance + commissioning. CCEW / COES electrical cert + ARCtick refrigeration record + manufacturer warranty registration.
  • 6Make-good. Wall patching, paint touch-up, condenser pad. Disclosed in writing.

Indicative ranges · supply + install

AU 2026

Split system (2.5 kW · single bedroom)$1,400 – $2,200
Split system (5–7 kW · living)$2,400 – $4,200
Split system (9 kW · open plan)$3,500 – $5,800
Multi-head (1 condenser · 3 heads)$6,500 – $11,500
Ducted system (3BR · zoned)$9k – $16k
Ducted (4–5BR · large · ceiling-mounted condenser)$14k – $26k
Indicative. Cathedral ceilings, double-storey, three-phase upgrade, strata access, heritage = upper end. Bargain-brand units = cheaper but warranty support is the gamble.

Ask this, exactly

Save · share · screenshot

"Can you send the heat-load calculation, the unit brand + model + kW, the refrigeration install line, and the electrical install line — separately, with both your ARCtick and electrical licence numbers?"

02

How to tell a real one from a cowboy.

The HVAC villain is the supply-and-install retailer using sub-contracted installers paid per job. They turn up in a brand-name uniform with no individual licence to point at.

Red flags — in order of how often you'll meet them

  • !

    No heat-load calculation

    "5kW does a lounge." It doesn't — not in 2026, not in a north-facing room, not on a 38° day. A working installer measures + calculates. A cowboy guesses.

  • !

    Won't name the ARCtick installer number

    The ARCtick (Australian Refrigeration Council) authorisation number identifies the licensed refrigeration mechanic on the job. Without it, manufacturer warranty is at risk.

  • !

    Same person doing electrical + refrigeration without both tickets

    Most operators hold both. Some don't. The dodgy install is the electrician doing refrigeration without ARCtick, or the refrigeration mechanic doing electrical without an electrical licence.

  • !

    "Bargain unit, no brand, full warranty"

    Warranty is only worth as much as the local service network. Major Tier-1 brands (Daikin / Mitsubishi / Fujitsu / Panasonic) have national service. Unknown brands often disappear inside 5 years.

  • !

    Pre-summer pressure-sell

    "Get it in before the 38° day." Real urgency exists. But a working installer doesn't cut corners to hit a sales target — they tell you honestly when their slot is.

The verification routine — 5 minutes, free

  1. ✓
    ARCtick authorisation — search the individual at the ARC website. Confirms they can handle refrigerant.
  2. ✓
    Electrical licence on state register (NSW Fair Trading · ESV · ESO QLD).
  3. ✓
    ABN on abr.business.gov.au. At least 12 months. Match the licence.
  4. ✓
    Manufacturer authorised installer status for the brand you're buying. Improves warranty support — the manufacturer takes the claim seriously.
  5. ✓
    CCEW / COES + ARCtick lodgement record promised at handover.

Ask this, exactly

"Could you send your ARCtick number, your electrical licence number, and confirm you're an authorised installer for the brand on the quote?"

03

What licence and certificate?

HVAC needs federal refrigeration authorisation + state electrical licence. Both are non-negotiable.

FederalAll states

ARCtick

  • Refrigerant Handling Licence (Full / Restricted) issued by Australian Refrigeration Council.
  • Required to install, service, decommission any system charged with controlled refrigerant.
  • Each licensee has an individual authorisation number.
  • Check the ARC database.
NSW · QLD · VICElectrical

State electrical licence

  • CCEW (NSW) / COES (VIC) / Form 5 (QLD) issued for the electrical install.
  • Power supply, isolator, switchboard work — all licensed electrical.
  • Sometimes the refrigeration mechanic holds both; sometimes a separate sparky comes to site.
  • Check the relevant state register.
ManufacturerBrand

Authorised installer

  • Daikin / Mitsubishi / Fujitsu / Panasonic each run authorised installer programs.
  • Manufacturer warranty cover is stronger for systems installed by authorised installers.
  • Not legally required — but a strong positive signal.
  • Brand websites list authorised installers by suburb.

Half-time

Wrong size = wrong install. Forever.

Quote anatomy, the cowboy test, the two tickets. The first three sort licensed installers from sub-contracted phone-room operations. The next seven are how you tell working installers apart — and how the unit lasts the warranty period without running flat out.

04

When you need them now.

The booking window runs September to November — and that's when prices spike, installs slip, and "we'll get to you next week" becomes "actually December." The honest operators tell you that. The cowboys promise faster than they can deliver.

Off-peak (June–Aug).

Best time. Installers have capacity. Discounts available. Slot in a week or two.

Pre-summer (Sep–Nov).

Demand spike. Quotes go up 10–20%. Installers run 3–6 weeks out. Lots of corner-cutting.

Peak (Dec–Feb).

Emergency-only mode for many installers. Repair triages priority over new installs.

Ask this, exactly

"What's your real install date — not the booking date — and do you have a written rule if you slip?"

05

What happens next, step by step.

  1. 1Step

    Site visit + heat load

    Room dimensions, aspect, insulation, glazing, ceiling height. Real heat-load calculation, not a guess.

  2. 2Step

    Written quote + system spec

    Brand, model, kW, install method, refrigeration line set, electrical supply, all itemised.

  3. 3Step

    Contract + 10% deposit

    Letterhead. Both licence numbers. Variation rules in writing. Install date confirmed.

  4. 4Step

    Install day

    Indoor + outdoor units mounted, pipework run, vacuum, brazing, refrigerant charge, electrical connection, isolator install.

  5. 5Step

    Commissioning + tests

    Cooling test, heating test, condensate flow, leak test, electrical safety. Manufacturer warranty registration.

  6. 6Step

    CCEW/COES + ARCtick + invoice

    Both certificates lodged + copied to you. Invoice itemised. Warranty pack handed over.

06

Split, multi-head, or ducted?

Three system types. Different upfront costs, different running costs, different lifespans. The wrong system for your house is the most expensive aircon decision.

Option A · most common

Split system

One indoor unit, one outdoor condenser, one room (or open-plan area). Efficient + cheap to repair.

Right when: single room or open-plan area, simple install, budget-conscious.

Wrong when: whole house, multiple rooms — 4 splits ≠ 1 ducted.

$1.4k – $5.8k

Option B

Multi-head

One outdoor condenser, 2–5 indoor units in different rooms. Less wall-mounted clutter than multiple splits.

Right when: 2–4 rooms to cool, narrow strata block, want fewer external condensers.

Wrong when: 5+ rooms — ducted becomes more cost-effective. One condenser breaks = all heads down.

$6.5k – $11.5k

Option C

Ducted

Single condenser, ductwork through the ceiling, zoned vents to each room. Most efficient for whole-house cooling.

Right when: 3+ bedrooms + living area, accessible ceiling space, new build / major reno.

Wrong when: no ceiling space, heritage with restricted ductwork access, low ceilings.

$9k – $26k

07

Warranty — three different clocks.

Three warranties, three different lengths, three different things they cover. Confusing them is how the cheap install's warranty claim gets denied at year four.

  1. Layer 01

    Manufacturer unit warranty

    5 years parts + labour standard for Tier-1 brands. 7 years on Daikin / Mitsubishi for residential. Only valid if installed by an ARCtick-licensed mechanic.

  2. Layer 02

    Installer workmanship

    Pipework, brazing, electrical connection, mounting. Typically 1–5 years from the installer. Spell out callback rule.

  3. Layer 03

    Refrigerant + recharge

    Refrigerant leak warranty often limited (12 months on workmanship leaks). Top-up charge is at homeowner cost outside that window.

  4. Layer 04

    Statutory consumer law

    ACL requires reasonable workmanship. Always exists. Doesn't require a brochure.

Ask this, exactly

"Can you list the manufacturer warranty length, your installer workmanship warranty, and the refrigerant leak rule — in writing?"

08

Heat, humidity, strata, three-phase.

HVAC pricing tracks several site factors closely. Some you can't change — others you can plan around.

  • Climate

    Subtropical (SE QLD) needs more capacity for humidity. Inland (Canberra, Bendigo) needs reverse-cycle for cold winters. Coastal corrosion = stainless or treated outdoor cabinets.

  • Strata

    External condenser location, noise impact on neighbours, common-property penetration. Owners corporation approval required.

  • Three-phase

    Large ducted systems (~16 kW+) may need three-phase. Some suburbs don't have it — network operator decides.

  • Ceiling void

    Ducted needs ~400mm of ceiling void. Older homes with low pitch can't fit standard ductwork. Specialist install or rethink to multi-head.

Ask this, exactly

"Have you confirmed I've got the supply (single vs three-phase) + ceiling void you need, and what's the noise impact for strata neighbours?"

09

Edge cases — get a second opinion for…

  • Heritage / Conservation Area

    External condenser location restricted by council. Some heritage overlays prohibit visible-from-street condensers. Specialist solutions exist (split with hidden condenser).

  • Strata / apartment

    Owners corporation approval. Noise impact on adjacent units. Common-property penetration through walls. Some buildings restrict aircon entirely.

  • Three-phase upgrade needed

    Large ducted (~16kW+) or multi-head can push single-phase past limits. Three-phase upgrade adds $5k–$15k.

  • Switchboard upgrade needed

    Old boards may not support an inverter aircon. Switchboard upgrade is a separate quote.

  • Asbestos walls / ceiling

    Pre-1990 fibro walls + asbestos eaves common. Drilling needs containment. Specialist work + disposal.

  • Cathedral / raked ceiling

    No ducted possible. Split or multi-head only. Bulkheads + wall-mounted units the typical solution.

  • Coastal corrosion (within 1km of coast)

    Stainless steel + epoxy-coated condenser cabinets. Wrong cabinet = 3-year corrosion failure outside warranty.

  • Zone control + smart home

    Zoned ducted with smart-home integration. Specialist install. Daikin Airbase / Mitsubishi MELCloud / etc.

  • Heat-pump hot water + aircon

    Different trade boundary. Heat-pump HWS often plumbed + electrical, not refrigeration. Different operator may apply.

10

After they leave.

Aircon aftercare comes down to two things: filter cleaning (homeowner job, every 3 months) and annual service (installer job, every 12 months). Skipping either voids most manufacturer warranties — and most warranty claims are denied because nobody serviced the unit.

Filter cleaning routine.

Every 3 months — homeowner job. Walked through at handover. Dirty filter halves the efficiency.

Annual service.

$180–$320 per unit. Refrigerant check, coil clean, electrical test. Keeps manufacturer warranty alive.

Warranty registered.

Manufacturer site lists serial number + install date + your details. Often missed by lazy installers.

Both certificates filed.

CCEW/COES + ARCtick lodgement record kept by you. Both required for sale of the house.

Ask this, exactly

"Will you register the manufacturer warranty for me, send both certificates by email, and quote your annual service rate?"

If you've read this far

An installer who names both tickets, the heat-load number, and the manufacturer warranty registration is not a unicorn. It's the bar.

We can introduce you to installers in your area who already work this way — ARCtick + electrical, manufacturer authorised, heat-load calculated. No phone-room sales. No paid placement.

✓ No referral fees✓ Verified means all 10✓ No spam
Find a vetted HVAC installer Split · multi-head · ducted
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