At SolarTherm UK, we have been installing solar for over 15 years, and in that time, we have heard some useful questions. We’ve also heard horror stories of failed installs and poor quality equipment being installed. Here are the top questions you need to ask your installer to ensure your solar project goes smoothly and delivers the benefits you expect.
Are You Fully Accredited and Certified?
Ask what accreditations and certifications your installer holds. At a minimum they should be MCS-certified (Microgeneration Certification Scheme) and registered with the NICEIC or Napit. Accreditation guarantees your installer follows industry standards, ensuring safety, quality and eligibility for government incentives (like the Smart Export Guarantee).
Can You Provide References or Past Projects?
A reputable installer should have a portfolio of previous completed installations. Ask to see examples. This should be followed up with your own research on customer reviews and experiences using Google Reviews and Trust Pilot.
What Warranties Do You Offer?
Ensure you understand the warranties on both the solar panels, solar battery and workmanship. Make sure you understand what the warranties cover, whether it’s performance, faults or repair and what additional costs will be incurred if a fault happens.
How Do You Handle Permits and Approvals?
Solar installations require approval from your DNO (Distribution Network Operator), ask your installer if they will be managing all the necessary paperwork and liaise with local authorities and planning authorities (where applicable) or whether it is something you must manage yourself.
What Size System and Configuration Do You Recommend?
A tailored system design is crucial for efficiency. Buying an off-the-shelf solar PV system may not be big enough for your property or could be too big incurring higher costs and a longer pay-back period unnecessarily. Ask your installer how they calculate the optimal system size, expected energy savings and whether they offer monitoring solutions to track your energy production. An installer that is EPVS-verified has their performance, returns and generation estimates independently verified by the Energy Performance Validation Scheme, meaning your quote is accurate and not over-inflated.
What Are the Total Costs and Payment Terms?
Get a clear breakdown of all costs, including equipment, installation and any additional charges. Make sure you know what is included in your quote and if there is anything else that you will need to pay for separately. Ask about payment schedules and whether there is any financing options available to make the investment more manageable.
Do You Offer Aftercare and Maintenance Services?
While solar systems require minimal maintenance, it is still worthwhile to know who you can call if things do go wrong. A reliable installer will offer ongoing support and maintenance, to keep your system performing at its best.
How Long Will the Installation Take?
Understanding the project timeline helps you plan ahead. Ask for a realistic schedule from start to finish, including any potential delays. A standard domestic installation should take around a day, with more complicated or larger systems taking two or more days.
What Happens If There Are Unexpected Issues?
Even with the best planning, issues can arise. Ask how the installer handles unforeseen problems, if these would incur additional costs and how they will communicate updates with you.
Can You Help Me Maximise Financial Benefits?
The Smart Export Guarantee, charging your solar battery from off-peak tariffs and using solar to charge your electric vehicle (EV) can all make your investment more profitable. A knowledgeable installer should guide you through these options and ensure your system is set up for you.
Making the Right Choice
Choosing the right solar installer is just as important as choosing your solar panels. Asking the right questions before signing your contract ensures a smooth installation, guarantees long-term performance and protects your investment.
At SolarTherm UK we’re full accredited, experienced and committed to helping homeowners get the most from their solar energy system. We have over 15 years’ experience, are MCS-certified, EPVS Standard Members and are backed by Trustmark, and HIES.
Before you sign on the dotted line, make sure you’re covered, and your installer will guide you confidently through your solar installation.
Contact SolarTherm UK today for your free no obligation quote and design, tailored to your property, usage and future energy needs. No hard sell, just honest, expert advice. We let our figures do the talking for us.
Your home. Your energy. Your future.
