Split-system installer registration in Pakenham — ARC tick check.

The Australian Refrigeration Council (ARC) administers two licences that matter for any split-system job in Pakenham. The Refrigerant Trading Authorisation (RTA) is the company-level licence to buy and hold refrigerant gas. The Refrigerant Handling Licence (RHL) is the individual-level licence the technician needs to actually open the service valves, braze a line set, or recover gas from a unit being removed. Both are required, both are public, and both should appear on a legitimate written quote.

You can search the ARC public register for free at arctick.org. Type the business name. A compliant Pakenham installer will return an active RTA number, an address, and a list of authorised technicians with their RHL numbers and expiry dates. If the search returns nothing, or the licence is expired, that quote is not legal — even if the installer is cheap, even if a mate recommended them, even if they swear they’ve been doing it for twenty years. Refrigerant work without an ARC RHL is a federal offence under the Ozone Protection and Synthetic Greenhouse Gas Management Regulations, with penalties up to $33,000 per breach. It also voids your manufacturer warranty — Daikin, Mitsubishi, Fujitsu and Panasonic all require an ARC-licensed install for the 5-year parts warranty to be honoured.

The three cuts-of-corner we see in Pakenham.

We get called to fix a lot of failed splits across Cardinia Lakes, Officer and Lakeside — usually 18–36 months after a cut-price install. The pattern is depressingly consistent. These are the three corners cheap installers cut:

1. The vacuum gets skipped or rushed. Before refrigerant is released into the new line set, the installer is supposed to pull a deep vacuum — below 500 microns, held for at least 15 minutes — using a micron gauge to verify. A proper vacuum on a 5-metre line set takes 20 to 30 minutes. The shortcut is a 5-minute pull with no gauge, "looks dry enough, send it". Moisture stays in the line, freezes at the expansion valve, slowly degrades the compressor oil. The unit works fine for two summers, then in year three it stops cooling. Compressor replacement: $1,800–$2,400 out of warranty.

2. Bad flares, undersized line set, no re-flare. The flares that join the copper line set to the indoor and outdoor units have to be cut square, deburred, and rolled to the exact angle for the refrigerant spec (37° for R32). If the cut is dirty, the flare cracks under pressure cycling and refrigerant leaks slowly. R32 escapes faster than R410A because it’s a smaller molecule. By year two you’re at 60% charge, the unit struggles in 35°C weather, and someone tells you it needs "a top-up." A top-up without finding the leak is throwing $400 at the sky every 18 months. We UV-dye and pressure-test every flare on commissioning.

3. No isolator switch, no Certificate of Electrical Safety. AS/NZS 3000 requires an isolator switch within sight of the outdoor unit so a service technician can kill power before working on it. Energy Safe Victoria (ESV) requires a Certificate of Electrical Safety (CES) lodged for every fixed-wired appliance install. Plenty of cheap installers wire straight into the nearest power point with a plug-pack and never issue a CES. If you ever claim on insurance after an electrical fault, the lack of CES is the first thing they ask for — and your claim gets declined.

What a compliant Pakenham install looks like.

• ARC RTA & RHL numbers printed on the quote, invoice, and commissioning sheet.
• AS/NZS 3000 electrical work by a Registered Electrical Practitioner with a Certificate of Electrical Safety (CES) lodged through Energy Safe Victoria.
• Line-set vacuum to under 500 microns, held 15+ minutes, logged on a micron gauge.
• Pressure test at 4.15 MPa for R32 (or 4.3 MPa for R410A), with a soap-bubble or UV-dye check on every flare.
• Outdoor isolator switch within sight of the condenser, fused or breakered to manufacturer spec.
• Manufacturer commissioning sheet filled in, signed, and left with you in a handover folder.
• Warranty registration lodged with the manufacturer on your behalf.

Compliant install pricing — Pakenham.

Single-head 2.5–3.5 kW back-to-back install: $1,650–$2,200. 5–7 kW with a longer line run: $2,400–$3,200. Multi-head (one outdoor, 2–3 indoor heads): $4,500–$7,500 depending on capacity and pipe runs. Worked example: 5 kW Daikin Cora in a Cardinia Lakes bedroom, 4 m line set, isolator, CES, warranty registered — $2,650 fitted. Cheaper than that, and someone is skipping the vacuum.