In most cases, yes — adjusting the pipe brackets (also called line-set clips or pipe clamps) that hold the refrigerant pipework against your outdoor unit or wall is something a competent homeowner can do themselves. However, there are clear boundaries: the moment any work involves the refrigerant lines themselves — opening fittings, moving pipes, or touching the flare connections — you must stop and call a licensed professional.
What Are Refrigerant Pipe Brackets?
Refrigerant pipe brackets are the plastic or metal clips and saddles that secure the insulated copper line-set (the pipes carrying refrigerant between your indoor and outdoor units) to the wall, ground, or the outdoor unit casing. They keep the pipework tidy, prevent vibration noise, and protect the insulation from UV damage and physical knocks.
Adjusting these brackets might be needed if:
- A bracket has come loose or cracked over time
- You're re-routing the pipe run slightly to clear a new garden structure or deck
- The insulation wrap has slipped and you want to re-secure it
- You're adding extra clips to reduce pipe movement or rattling
What a Homeowner Can Safely Do
The following tasks are generally safe for a capable DIYer and do not require a licensed tradesperson:
- Repositioning or replacing pipe clips/saddles on the wall or ground, provided you do not disturb the copper pipes or their fittings
- Re-taping or replacing UV-resistant pipe insulation (foam lagging) that has deteriorated — this is important in NZ's high-UV environment
- Tightening loose screws on existing brackets
- Adding additional clips to reduce vibration or sagging along a long pipe run
- Painting bracket covers with a UV-stable paint (check with your paint supplier — Resene and Dulux both stock suitable exterior products)
Tools You'll Likely Need
- Cordless drill/driver
- Appropriate wall plugs and screws for your cladding type (timber, brick, or fibre cement)
- Tape measure and pencil
- UV-resistant pipe insulation tape or foam lagging
Replacement pipe clips are widely available at Bunnings or Mitre 10. Match the clip size to your pipe diameter — common sizes are 6.35 mm, 9.52 mm, and 12.7 mm (¼", ⅜", and ½" copper).
What You Must NOT Do — Restricted Work
This is the critical boundary. Under New Zealand law, refrigeration and air conditioning work involving the refrigerant circuit is restricted work. This includes:
- Opening, disconnecting, or moving any flare fittings or brazed joints on the copper line-set
- Purging, recovering, or recharging refrigerant (e.g., R32 or R410A)
- Cutting or extending the copper pipe run
- Any work that risks releasing refrigerant to atmosphere
Refrigerant handling requires a licensed installer, and releasing refrigerants to atmosphere is also an environmental offence under the Ozone Layer Protection Act. Check with MBIE or your installer for the applicable licensing requirements. If your bracket adjustment requires moving the pipe even slightly at a connection point, call a professional.
Safety Checks Before You Start
- Turn the heat pump off at the isolator switch before working near the outdoor unit. Do not rely solely on the remote control.
- Check for sharp edges on the unit casing — sheet metal can be razor-sharp.
- Never drill into the outdoor unit casing itself; only fix brackets to the wall or a purpose-made mounting frame.
- Inspect the insulation while you're there — cracked or missing foam lagging reduces efficiency and can cause condensation issues, especially in NZ's more humid regions. Replace it promptly.
- If you notice oil staining around any pipe joint, frost on the pipes, or the system is underperforming, these are signs of a refrigerant leak. Do not proceed — contact a licensed heat pump installer.
Does This Work Require a Building Consent?
Simply adjusting or replacing pipe brackets is not building work and does not require a consent. However, if you are making significant changes to the pipe route or the outdoor unit's position, check with your local council. MBIE Building Performance provides guidance on Schedule 1 exemptions, but your council has the final say.
When to Call a Professional
Call a licensed heat pump installer or refrigeration mechanic if:
- Any pipe fitting needs to be loosened or moved to reposition the bracket
- You suspect a refrigerant leak (oil staining, icing, poor performance)
- The pipe run needs to be extended or re-routed significantly
- You're unsure whether the existing installation meets the manufacturer's requirements or NZ standards
- The outdoor unit itself needs to be relocated
A qualified installer will also ensure the work complies with the manufacturer's specifications, which matters for your warranty. You can find licensed heat pump installers in your area on tradedirectory.co.nz.
ISO 9001
