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When most homeowners compare solar quotes, they focus on panel brands, inverter specs and the final price. Understandably so — those are the numbers on the page. But there’s a question that rarely gets asked, and it can matter just as much: who is actually going to be on your roof installing the system, and who’s responsible if something goes wrong afterwards?

Solar companies generally use one of the two installation models. Some employ their own in-house installation team. Others rely on a network of subcontractors — separate businesses or individual tradespeople brought in on a job-by-job basis. Both models can produce a compliant, well-installed system. But they can also lead to very different experiences if you ever need after-sales support, so it’s worth understanding the difference before you sign anything.

What Is An In-House Solar Installer?

An in-house solar installer is a direct employee of the company that sold you the system. They’re on the payroll, trained to that company’s standards, and answerable to the same business you spoke with during the sales process. If there’s a fault six months after installation, the person who fixes it (or the team they belong to) is the same organisation that quoted you.

What Is A Solar Installer Subcontractor?

A solar installer subcontractor is an independent business or tradesperson engaged by the solar company to carry out the physical installation, but who isn’t directly employed by them. Subcontracting is extremely common across the trades — building, electrical work and solar are no exception — and a good subcontractor can do excellent work. The distinction isn’t really about skill. It’s about the chain of accountability: if an issue arises, is it the original company sorting it out directly, or are you dealing with a separate business that may or may not still be engaged by the seller?

Why Does The Difference Matter For Warranty And After-Sales Support?

This is where it helps to separate the two. A solar system typically involves two separate types of warranty:

1. Product/Manufacturer Warranties — covering the panels, inverter and battery (if fitted). These come from the manufacturer and generally apply regardless of who physically installed the system, provided the installation meets the manufacturer’s requirements.
2. Installation/Workmanship Warranty — covering the quality of the install itself: mounting, wiring, cable management, roof penetrations and general workmanship. This warranty is provided by whoever did the installation, or by the company that takes responsibility for it.

Using a subcontractor doesn’t automatically void a manufacturer warranty, and using an in-house team doesn’t automatically guarantee a smoother outcome — those are oversimplifications. What the installation model does affect is clarity: with an in-house team, there’s rarely any ambiguity about who is responsible for workmanship issues, because the installer and the seller are the same entity. With subcontracted work, that clarity depends entirely on how the contract between the solar company and the subcontractor is structured, and whether the subcontractor is still trading and reachable if a problem comes up years later.

Questions To Ask A Solar Installer Before Signing

Rather than guessing, it’s far simpler to ask directly. Before signing with any solar company, it’s worth asking:

1. Do you use an in-house installation team, or subcontractors?
2. If subcontractors are used, are they exclusive to your business or shared across multiple solar companies?
3. Who do I contact if there’s a fault after installation — you, or the installer directly?
4. What is your workmanship warranty period, and what does it cover?
5. What happens if the installer (or subcontracting business) is no longer trading?
6. Will the same team handle any warranty callbacks, or could it be someone different each time?
7. Can you provide the installer’s accreditation and licence details in writing?

A company confident in its installation model should be able to answer all of these without hesitation.

How To Check Whether A Solar Company Actually Uses An In-House Team

If a company says it uses an in-house team, it’s reasonable to ask how you can verify that. A few practical checks:

• Ask directly, and ask for it in writing as part of your quote or contract.
• Check whether the installer named on your Clean Energy Council paperwork matches the company you’re dealing with.
• Ask how many installers the company employs directly, and how long they’ve been with the business.
• Look at whether after-sales enquiries go through the same company from start to finish, or get handed off to a third party once the job is complete.

Does Using In-House Installers Usually Cost More?

Not necessarily, and it’s not a hard rule. Pricing depends on a company’s overheads, scale, buying power on hardware, and how they structure their business — not simply on whether the installer is an employee or a subcontractor. Some in-house teams are priced competitively because the company saves on subcontractor margins elsewhere; some subcontracted jobs are priced higher due to demand in a particular area. 

If you’re comparing an in-house solar installer Brisbane price against subcontracted quotes, it’s worth comparing like-for-like on inclusions — mounting hardware, cabling standards, cleanup, and what’s covered under workmanship warranty — rather than assuming one model is inherently cheaper or more expensive.

Why REA Solar’s In-House Installation Team Matters

REA Solar uses an in-house installation team for its residential installs rather than outsourcing the installation to subcontractors. In practical terms, this means the people assessing your roof, running the cabling and commissioning your system are the same team you can contact afterwards if you have a question or a concern. There’s one point of contact from quote to installation to after-sales support, rather than a handover between separate businesses. 

It also means installation standards are set and monitored internally, rather than varying between different subcontracting crews. This isn’t a claim that subcontracted installs are inherently worse — plenty are done well. It’s simply that an in-house model removes a layer of uncertainty about who’s accountable if something needs attention down the track.

What This Means for Your Solar Warranty

The panels and inverter you choose matter, but so does the residential solar system installation itself — and just as importantly, who stands behind it. Understanding whether you’re dealing with an in-house installation team or a solar installer subcontractor, and being clear on where installation workmanship responsibility sits, can save a lot of frustration if you ever need support after the job is done.

If you’d like to talk through your options with REA Solar’s own installation team, call 1300 360 047 or get in touch via the contact page.

FAQ

Does a subcontractor installation void my manufacturer warranty? 

No, not automatically. Manufacturer warranties on panels, inverters and batteries generally apply as long as the installation meets the manufacturer’s requirements and is carried out by a licensed, accredited installer, regardless of employment structure.

What’s the difference between a manufacturer warranty and a workmanship warranty?

A manufacturer warranty covers faults in the equipment itself. A workmanship warranty covers the quality of the installation — mounting, wiring and general workmanship — and is provided by whoever performed the install or the company responsible for it.

How do I find out if a solar company uses in-house installers? 

Ask them directly and request it in writing, check the installer details on your Clean Energy Council documentation, and ask how after-sales support is handled once the job is complete.

Is an in-house solar installer always better than a subcontractor? 

Not necessarily — many subcontractors do high-quality work. The main advantage of an in-house team is clearer accountability, since the same company that sold and installed your system also handles any follow-up support.

What should I do if my solar installer is no longer trading? 

Check your manufacturer warranty documentation for the relevant contact details, and consider contacting the Clean Energy Council or your state’s fair trading body if you need help resolving a workmanship-related issue with a company that’s no longer operating.