Know your protection · New owner

Solar warranty check for new owners

Q: If the installer has gone bust, is my installation warranty void?

The manufacturer warranties (on the inverter, battery, and panels) still apply and transfer to you as the new owner. However, the workmanship warranty from the installer (usually 1–5 years) becomes void if the installer has ceased trading. You'll still have manufacturer coverage for equipment faults, which is the most important part. For workmanship issues, you'd need to hire a qualified electrician to assess and repair, though this is rare after the first few years.

Q: Can I extend the warranty now I've bought the house?

Some manufacturers (like GivEnergy, Solis, Growatt) offer extended warranty plans that you can purchase even after the initial warranty period. This typically requires the system to be in good working condition and may cost £200–£795 depending on the equipment and duration. Contact the manufacturer to ask about extended warranty options. However, you cannot extend if the initial warranty has already expired.

Q: What documentation do I need to transfer the warranty?

Most manufacturers require: the equipment serial number, proof of installation (MCS certificate or invoice with installation date), and proof of your new ownership (property purchase receipt, council tax bill, or mortgage statement). Some manufacturers accept a simple change-of-ownership notification. Email or contact the manufacturer directly for their specific requirements—they vary by brand.

Book warranty check Warranty claim support

Most warranties automatically transfer to new owners
Panels, inverter, and battery covered separately
Some require re-registration within 30 days of sale

After this guide, you'll know:

Book a health check

5.0

13 Trustpilot reviews

Trustpilot Google

I have a GivEnergy system consisting of two batteries, two inverters and a controlling EMS (Energy Management System) which has not worked since Nov 2025. After six months I discovered Solar Tech Support, reached out to them and Ron phoned me back – how often do you get that service? Could not be more helpful – worked directly with me over the phone, outside what I would call normal working hours. Lucid explanations and we were able to discuss the issues and history using camera and email history. As this was a very rare setup, Ron was able to access an EMS expert in the field to confirm the solution. One sunny day in, I am now only paying for standing charge and a few pence for spikes in grid consumption while battery catches up with house demand.

Ian · May 2026 Trustpilot

When my GivEnergy system had an issue, I was completely left without support and had honestly lost all hope. Thankfully, I searched online and found Ron, which completely turned things around. After sending him a message, he responded incredibly fast and called me to assure me that he would get the problem fixed. I really admire his dedicated, supportive nature and his determination to find a solution. With this kind of outstanding attitude and customer service, he has absolutely secured a future customer in me.

Sree · May 2026 Trustpilot

Ron want out of is way to help, nothing was to much. He was very thorough in what he did Very knowledgeable I would highly recommend Ron and his company He did a fantastic job for me. if you have any problems, he'll do his best to help you out and resolve your problem. I wouldn't hesitate to recommend them

Dennis Brown · May 2026 Trustpilot

Ron took me through a diagnostic to confirm my GivEnergy Inverter had a fault. A common one as it turns out with the AC Inverter. As GivEnergy is defunct there is no immediate fix, aside from sourcing 2nd hand replacement. It may be that a fix becomes available over the summer which would make a lot of GivEnergy customers happy (Again)

Tony Deacon · May 2026 Trustpilot

Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone

Phill · May 2026 Trustpilot

I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues

michael fairhurst · May 2026 Trustpilot

Contacted Solar Tech Support in desperation. After explaining the issues I had with my system a diagnosis was made and a solution proposed. Fantastic service, even contacted a manufacturer to arrange replacement parts for me. Great communications, explained all they were doing and what I had to do, clearly and precisly. Followed up to confirm all was ok. Excellent service.

Mr Machin · May 2026 Trustpilot

After GivEnergy went into liquidation, just my luck, my battery started playing up (internal board crashed). Contacted my installer - not interested! Found Solar tech support on a Google search. Sooo glad I found this company! Ron is extremely helpful and has plenty of experience. He soon confirmed what the fault was, and helped me to get my system up and running again. Now moved my GivEnergy account to Solar tech support, and will definitely use again if I have more issues. Unusual to find such a helpful company in these times, no morons reading scripts, just direct contact with the engineer.

Keith Ballard · Apr 2026 Trustpilot

Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.

Hugh Speirs · Apr 2026 Trustpilot

Ron is a super star. Two months ago my GivEnergy battery failed a firmware upgrade leaving it a brick. My installer couldn't/wouldn't fix it. GivEnergy couldn't/wouldn't fix it. Then they went into administration and all hope was lost. A flurry of emails later and Ron had diagnosed the fault (failed USB flash drive, something I'd suspected) and talked me through resolving it. Two months of nothing resolved in about 3 hours. It's great to work with someone who pays attention to the details, knows that they're doing (not just following a script) and gets stuff sorted without a fuss or up-charging.

Christopher · Apr 2026 Trustpilot

I can add to the list of customers who had already 'given up' on GivEnergy due to their appalling customer service, and that was before they went into administration (their Trustpilot reviews don't lie!). So you can imagine my desperation when, having changed my ISP and my Inverter, predictably, proving to be the only device that didn't connect automatically to my new network, I found zero prospect of any customer support with GivEnergy having called in the administrators just five days earlier! The salvation came from Solar Tech Support. My IT advisor stumbled across their web site and some very helpful tips for beleaguered GivEnergy customers, as well as an offer to provide direct assistance. Nothing ventured, I decided to drop them an E-Mail, with very low expectations based on my experience of GivEnergy customer support. Within an hour Ron had responded with some pin point advice, and after a few exchanges of E-Mails he had nailed the problem, enabling the combined efforts of my IT advisor and solar installer to resolve it and reconnect my Inverter. Thank you Solar Tech Support, and Ron in particular, for coming to the aid of a deserted and despondent GivEnergy customer. Expert, razor sharp advice and first class customer service, even though I wasn't officially a customer.

customer · Apr 2026 Trustpilot

This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing . If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.

Andy Thomas · Apr 2026 Trustpilot

I sent a message on their website regarding a problem I have on my Givenergy system. Although not supplied by Ronald, I thought it was worth an email. Within the hour on a Saturday, he phoned and we discussed the problem. He logged in remotely and gave excellent advice. I'm too far away for his on-site help but he did diagnose the problem and was happy also to chat through my thoughts about an upcoming solar/battery install I'm planning. Great bloke.... if only he was nearer!

Philip · Apr 2026 Trustpilot

Ian · May 2026 Trustpilot

Sree · May 2026 Trustpilot

Dennis Brown · May 2026 Trustpilot

Tony Deacon · May 2026 Trustpilot

Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone

Phill · May 2026 Trustpilot

I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues

michael fairhurst · May 2026 Trustpilot

Mr Machin · May 2026 Trustpilot

Keith Ballard · Apr 2026 Trustpilot

Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.

Hugh Speirs · Apr 2026 Trustpilot

Christopher · Apr 2026 Trustpilot

customer · Apr 2026 Trustpilot

Andy Thomas · Apr 2026 Trustpilot

Philip · Apr 2026 Trustpilot

What warranties does a solar system have?

A complete solar installation includes warranties from multiple sources. Understanding what covers what helps you know what protection you have.

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Solar Panels

Most panels come with dual warranties: Product warranty (10–12 years) covers manufacturing defects, workmanship, and materials. Performance warranty (25 years) guarantees the panels retain 80%+ of their rated output. Performance degradation of 5–10% over 25 years is normal and covered.

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Inverter

The inverter is the most common component to fail (though failures are still rare). Standard warranty is 5–12 years depending on brand and covers manufacturing defects. Some brands like SolarEdge offer extended 25-year options. Inverters are "working parts" of the system; failure rates are higher than panels but still low in the first 5 years.

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Battery

If your system has a battery, it typically comes with 5–10 years standard warranty covering manufacturing defects and capacity degradation (retains 80% capacity). Modern lithium batteries are designed for 10,000–20,000 charge cycles (10–20 years), but degradation accelerates beyond that. Capacity fade (100% → 95% → 90% over several years) is normal.

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Installation Workmanship

The installer typically provides 1–5 years workmanship warranty from installation, covering labour for repairs due to poor workmanship. This usually does NOT transfer if the installer has gone bust. If the original installer is still trading, you can sometimes request they assign the workmanship warranty to you. This is the warranty most affected by installer insolvency.

Warranty responsibility order

If something fails, here's the order of responsibility:

1. Manufacturer: Equipment defect (inverter, battery, panels)

2. Installer: Poor workmanship (electrical, mounting, commissioning)

3. You: Accidental damage, misuse, modification

Most failures in the first 5 years are manufacturer defects (warranty covered) or workmanship issues. Misuse is rare.

Do warranties transfer when you buy a house?

The short answer: most manufacturer warranties do transfer. The catch: workmanship warranties and extended warranties depend on the contract.

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Manufacturer Warranties (TRANSFER)

Panels, inverters, and batteries are owned by the manufacturer until they fail. The warranty is tied to the equipment serial number, not the person who owns the house. When you become the new property owner, you also become the new owner of these devices and can claim warranty. UK consumer rights law recognizes you now own the equipment and have the right to protection. Most manufacturers accept ownership transfers easily.

Example: If a SolarEdge inverter has 10 years warranty from 2022 installation and you buy the house in 2025, you have 7 years remaining.

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Workmanship Warranties (USUALLY DON'T TRANSFER)

The installer's workmanship warranty is typically tied to the original buyer. If the installer has gone bust, this warranty becomes void. However, you may be able to get a new workmanship certificate from a qualified electrician or independent solar inspection that assesses the installation. This isn't the original warranty, but it gives future coverage.

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Extended Warranties (CASE BY CASE)

If the previous owner purchased an extended warranty from the manufacturer, it may or may not transfer depending on contract terms. Ask the previous owner about extended warranties. If they have one, contact the manufacturer with proof of property purchase to request transfer. Some manufacturers allow it; others require a new payment.

MCS Certificate as Proof

Your MCS certificate (Microgeneration Certification Scheme) is an independent verification that the system was installed correctly by an accredited installer. This certificate is site-specific and stays with the property (not the person). You can use this as proof of warranty eligibility when contacting manufacturers. Find your certificate at mcscertified.com using your postcode. It shows the installation date, inverter/battery model, and installer details.

How to check your warranty coverage: 5 steps

Find the inverter and battery serial numbers

The inverter is typically mounted in a garage, loft, outbuilding, or external wall. The battery (if present) is usually nearby. Look for a label on each unit showing the model and serial number. Note these down.

Example: GE-AC-SP5000-XXXXXX (GivEnergy), SNK2K5E-XXX (Sunsynk)

Register the serial numbers on the manufacturer's portal

Most manufacturers have homeowner registration portals where you can register your equipment as the new owner. This activates your warranty. Visit the manufacturer's official website and look for "Product Registration" or "Warranty Claim" sections. You'll typically need:

• Serial number

• Model number

• Installation date (from paperwork or label)

• Your contact details

Check the installation date carefully

Warranty periods are measured from the installation date, not the manufacture date. These are often different by several months. Where to find it:

• MCS certificate (mcscertified.com + your postcode)

• Paperwork from the previous owner

• Label on the inverter

• Ask the previous owner

Example: If installed 15 Jan 2021 with 10-year warranty, it expires 15 Jan 2031.

Contact the inverter manufacturer with proof of property purchase

Email or call the manufacturer with: equipment serial number, installation date, proof of property purchase (completion document, council tax bill, etc.), and your contact details and address. Ask for confirmation that the warranty transfers to you, the warranty end date, and any required documentation. Most manufacturers respond within 5–10 working days. Keep their response as proof for future claims.

Request the workmanship warranty from the previous owner

Ask the previous owner for the installer's workmanship warranty certificate (if they have it). This is usually a separate document from the manufacturer warranties. If the installer is still trading, you may be able to request they transfer it to your name. If the installer has gone bust, this warranty is void, but you can still claim manufacturer coverage for equipment faults.

Timeline

Week 1: Get serial numbers, find MCS certificate

Week 2: Email manufacturers with proof of purchase

Week 3: Receive warranty confirmation

Ongoing: Keep confirmations on file for future reference

Common warranty issues for new owners

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Installer has gone bust

The installer may have registered the equipment with the manufacturer initially, but workmanship warranty is now void. The manufacturer warranty (on inverter, battery, panels) is still valid. Contact the manufacturer directly with the serial number. They have their own records and can confirm warranty status independently.

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Warranty registered to the previous owner

The previous owner may have registered the warranty in their personal name, locking you out of direct access. Contact the manufacturer with proof of property purchase. Most manufacturers will re-register ownership to you without needing the previous owner's involvement. Emphasize that you're now the property and equipment owner.

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System is outside the warranty period

If the system is 5+ years old and the manufacturer warranty has expired, you have no manufacturer coverage for equipment faults. Check if the manufacturer offers extended warranty plans (some do, for a fee). Alternatively, consider getting a system health check from a qualified technician to assess condition.

Most systems last 20–25+ years, but replacement costs can be £500–£3000+ for an inverter or battery if not covered by warranty.

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No MCS certificate or installation documents

Without installation documentation, warranty proof may be harder to establish. The MCS certificate is site-specific and publicly searchable. Go to mcscertified.com and search by your postcode—most residential installs from 2012 onwards are listed. Use this as your primary document. If not listed, contact the manufacturer with just the serial number and installation date (visible on the inverter label).

If warranty transfer is refused

This is rare, but some manufacturers may initially claim the warranty doesn't transfer. In the UK, consumer rights law (Consumer Rights Act 2015) recognizes that you now own the equipment and are entitled to protection. If refused, politely escalate to the manufacturer's manager and cite your ownership of the property and equipment. Most will relent. Warranty claim support services can also advise on next steps if you hit a wall.

Brand warranty periods at a glance

Here's a quick reference for the most common brands in UK homes. These are standard warranties; extended plans may be available.

GivEnergy

Inverter: 10 years standard (extendable to 12)
Battery: 10 years standard (extendable to 12)

UK-based. Strong support for new owners. Warranty transfer is straightforward.

Sunsynk

Inverter: 5 years standard
Battery: Varies (typically 5–10 years depending on chemistry)

Chinese manufacturer. Warranty transfer possible but may require original documentation.

SolarEdge

Inverter: 12 years standard (extendable to 25)
Optimizers: 25 years

Premium brand. Excellent warranty terms. Transfer is easy with proof of ownership.

Growatt

Inverter: 5 years standard (extendable to 10 via MMA plan)
Battery: Varies by model (typically 5–10 years)

Chinese manufacturer. Extended warranty available for a fee. Transfer requires registration.

Solis

Inverter: 5 years standard (extendable to 10)
Battery: Typically 5–10 years

Growing UK presence. Warranty transfer straightforward with serial number and proof of purchase.

Enphase

Microinverter: 25 years (industry-leading)
Battery: 12 years

US-based. Premium microinverter systems. Best-in-class warranty terms.

When to call a professional

Some warranty issues require professional assessment or intervention. Here's when to seek expert help (YMYL compliance).

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Equipment has failed and you need to claim warranty

If your inverter, battery, or panels have stopped working, contact the manufacturer first. If they confirm warranty covers the failure, they may arrange repair or replacement. If the manufacturer denies the claim, warranty claim support services can review the decision and advise your options.

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System is 5+ years old and warranty expires soon

Consider booking an independent solar inspection to assess the system's condition and identify any issues before warranty expires. This costs £145–£300 but can save thousands if hidden problems are caught early.

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You can't find documentation or manufacturer contact details

If you can't locate the MCS certificate or manufacturer details, a qualified installer can identify the equipment and help you establish warranty status. They have databases of installer records and can often locate missing documentation.

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Manufacturer warranty transfer is refused or disputed

If a manufacturer refuses to transfer warranty despite your proof of ownership, consumer rights law is on your side. A solicitor or consumer rights service can send a formal letter escalating the claim. Many manufacturers relent when faced with legal action.

Related guides

Learn more about protecting your investment and understanding your solar system.

Bought a House With Solar

Complete guide to buying a house with an existing solar system.

How to Identify Your Inverter

Find your inverter model and serial number in minutes.

Installer Gone Bust?

What happens to your warranty and your options.

Warranty Claim Help

Step-by-step support for submitting warranty claims.

Solar Health Plan

Annual checkups and protection plans for your system.

Book an Inspection

Professional solar system health checks and assessments.

FAQ

Frequently asked questions

If the installer has gone bust, is my installation warranty void?

The manufacturer warranties on the inverter, battery, and panels still apply and transfer to you. However, the workmanship warranty from the installer (usually 1–5 years) becomes void if the installer has ceased trading. You'll still have manufacturer coverage for equipment faults, which is the most important part. If a failure is due to poor workmanship (rare after the first few years), you'd need to hire a qualified electrician to investigate and repair at your own cost.

The system is 3 years old and the inverter has failed — who is responsible?

If the inverter has failed due to a manufacturing defect (not user damage or misuse), the manufacturer is responsible under their product warranty. Most inverter warranties are 5–12 years, so a 3-year-old failure should be covered. Contact the manufacturer with your serial number and proof of ownership to claim. They may offer a replacement or repair at no cost. If the failure is due to installation or workmanship issues, and the installer is still trading, they may be responsible. If the installer has gone bust, you'll likely need to hire an independent electrician to investigate and repair at your own cost.

Can I extend the warranty now I've bought the house?

Some manufacturers offer extended warranty plans that you can purchase even after initial ownership transfer. For example, GivEnergy, Growatt, Solis, and others offer plans that extend from 10 to 12 years, or 5 to 10 years, for a fee of £200–£795. However, you typically cannot extend after the initial warranty period has expired. Contact your equipment's manufacturer to ask about extended warranty options. They'll require proof that the system is in good working condition.

What documentation do I need to transfer the warranty?

Most manufacturers require the equipment serial number, proof of installation (MCS certificate or invoice with installation date), and proof of your new ownership (property purchase receipt, council tax bill, mortgage statement, or utility bill in your name). Some manufacturers accept just the serial number and proof of ownership. Requirements vary by brand. Contact your specific manufacturer to ask what they need. Keep the serial numbers and installation date from your MCS certificate handy—this is usually sufficient.

Warranty check

Unsure whether your inherited system is still under warranty?

A solar health check identifies your equipment, confirms warranty coverage, checks registration status, and tells you exactly what you're entitled to claim — before you spend anything on repairs.

Identifies warranty coverage for all major brands
Written report — suitable for insurance and disputes
Remote from £75 · On-site inspection from £295

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