Areas we cover
BedfordshireBerkshireBristolBuckinghamshireDevonDorsetEast SussexGloucestershireHampshireHertfordshireKentNorthamptonshireOxfordshireSomersetSurreyWest SussexWiltshire
0330 111 9399We will beat any written quote
Solar thermal maintenance

Solar Thermal Maintenance

Keep your solar water heating under regular professional care

Solar thermal maintenance helps you understand how well heat is being collected and delivered to your hot water cylinder. Solar Maintenance and Repairs inspects collectors, pipework, pumps, controls and fluid, with cleaning and servicing matched to the installation.

We support homes and commercial properties, including systems installed by other companies. An initial inspection establishes the condition of the equipment and the maintenance it needs.

Specialist solar support
Clear recommendations
Work scoped to your system
Ongoing maintenance and repairs
Request a call back
Tell us about your property, equipment and what you need help with. Our team will contact you to discuss the next step.
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Solar thermal maintenance

Is this the right service for your system

What our customers sayTrustpilot Read our reviews on Trustpilot
01 The system has not been professionally checked for some time
02 Hot water output is lower than expected
03 Pressure has changed or the pump makes unusual noise
04 Collectors are soiled or performance is gradually declining
05 You want a planned service schedule and clear condition reports

What the service covers

01

The collectors and circulation circuit

We inspect collectors for physical damage, soiling, glazing deterioration and signs of moisture ingress. Pipework, fittings and insulation are assessed for leaks, corrosion and wear. The pump, expansion vessel, heat exchanger connections and relevant valves are checked as part of the system scope.

02

Heat transfer fluid testing

The fluid carries heat from collectors to the cylinder. Repeated thermal cycling can change its condition, acidity and frost protection. Testing helps determine whether the fluid remains suitable or needs replacing. The right recommendation depends on the system and manufacturer specifications.

03

Controllers sensors and pressure

We review temperature readings, controller settings, pump behaviour and operating pressure. Sensors and controls need to respond correctly so heat moves when it can be usefully collected. Incorrect circulation can waste energy or leave the cylinder underheated.

04

Collector cleaning

Dust, bird fouling, pollen and other deposits can reduce the sunlight reaching the collector. Cleaning uses methods appropriate to the glazing and collector design. Roof access is assessed beforehand, with any necessary access equipment included in the agreed scope.

05

An initial inspection before ongoing care

We discuss your concerns and review available service records, then establish a baseline for collector condition, fluid, pressure and controls. The findings are explained with recommendations for urgent work, routine attention and future inspection intervals.

06

A plan that develops with the system

Collector type, age, usage and operating environment affect the maintenance schedule. Fluid replacement should follow testing and guidance rather than an arbitrary calendar. As equipment ages, we flag emerging replacement needs so you can plan ahead.

Need help with your system? Our team can talk you through the options. Discuss your requirements — call 0330 111 9399
How it works

From your first enquiry to ongoing support

Technicians maintaining rooftop solar panels
Our service includes
  • Specialist solar support
  • Clear recommendations
  • Work scoped to your system
  • Ongoing maintenance and repairs
Excellent on Trustpilot · 1,000+ online reviews
Book a free assessment — call 0330 111 9399
  1. 1

    Share the system history

    Tell us its type, age, previous service dates and any changes in heating or pressure. Existing records are useful if available.

  2. 2

    Agree the visit scope

    We confirm access, collector cleaning, component checks and any connected solar equipment that you want assessed.

  3. 3

    Inspect test and maintain

    The engineer carries out the agreed checks, including fluid condition and controls, with servicing and cleaning as specified.

  4. 4

    Explain the report

    You receive a written record of checks, findings and proposed additional work. Further repairs or parts are quoted before approval.

  5. 5

    Plan the next inspection

    We recommend an interval based on condition, manufacturer requirements and demand, with monitoring or reporting included where agreed.

Diagnostic checks on a rooftop solar array

Maintenance for homes

Routine care can identify a small leak, degraded fluid or incorrect control behaviour before it causes a larger problem. Solar PV, diverter and other related checks can be discussed for properties with multiple renewable systems.

Solar maintenance on an industrial rooftop

Commercial thermal maintenance

Hotels, leisure facilities, care homes, schools and multi-unit properties may have larger arrays and higher demand. Contracts can include collector cleaning, fluid checks, pump servicing, pressure assessment and reports for building-management records.

About Solar Maintenance and Repairs

Why choose Solar Maintenance and Repairs

Our work covers solar installation, maintenance and repairs, so advice considers the equipment over its working life. We assess the installation before recommending work, explain the options and agree the proposed scope and costs with you.

If additional work is needed, we explain the reason and quote before it proceeds. Related solar PV, thermal, inverter, storage, cleaning and bird-proofing services can be discussed where they are relevant to your property.

Technician checking rooftop solar panels
Trading since January 20191,000+ online reviews from homeowners and businesses
Areas we cover

Solar support across the South and South East

We support homes and businesses across Hampshire, Dorset, Wiltshire, Somerset, Bristol, Gloucestershire, Berkshire, Buckinghamshire, Oxfordshire, Surrey, Kent, East Sussex, West Sussex, Bedfordshire, Hertfordshire, Northamptonshire and Devon. Send your postcode and system details to confirm coverage and appointment availability.

Bedfordshire Berkshire Bristol Buckinghamshire Devon Dorset East Sussex Gloucestershire Hampshire Hertfordshire Kent Northamptonshire Oxfordshire Somerset Surrey West Sussex Wiltshire
17counties across the
South & South East

Frequently asked questions

What does an inspection include

Collectors, pipework, pumps, controls, sensors, pressure and fluid are assessed as relevant to the system. Cleaning and servicing tasks follow the agreed scope.

How long does the visit take

Allow around one to three hours for many domestic visits, with longer appointments for fluid replacement, complex installations or commercial sites. We confirm the expected scope when booking.

How often should a thermal system be serviced

Annual to two-yearly checks are a useful starting point for many installations. Manufacturer guidance, condition and demand determine the right schedule; older or high-use systems may need closer attention.

Can maintenance extend system life

It can identify wear and operating problems early, helping avoid prolonged operation with unsuitable fluid or leaks. It cannot guarantee a particular lifespan.

How can servicing reduce energy use

Correct circulation, clean collectors and suitable fluid help the system deliver available solar heat. Savings depend on the installation, weather and hot water demand.

How much does maintenance cost

The price reflects system complexity, access and the tasks required. Fluid, parts and any additional repair work are explained in the quotation.

Can you maintain a system fitted by another company

Yes. We assess its current condition and available documentation, including any installation issues that need attention.

Do you provide commercial contracts

Yes. The service schedule, reporting and response arrangements are agreed around the property’s system and operational needs.

Is there a guarantee on the maintenance work

We offer a service guarantee, while supplied parts carry their applicable manufacturer terms. Ask us for the scope and conditions for the work being quoted.

How do I book

Send your postcode, equipment details and last service date. We can arrange an initial inspection or discuss an ongoing plan.

What our customers say

1,000+online reviews
from homeowners and businesses
Excellent on Trustpilot
★★★★★
“I’m sure that there are dodgy companies out there but this company is certainly not one of them. Very helpful and prompt service, with good communication and trustworthy engineers who know their stuff. Louis was smashing. Very polite, explained everything and did a cracking job of servicing our solar panels system. I’d recommend them to anyone.”
RRoary Pownall
★★★★★
“SMAR are extremely professional, I was kept up to date throughout my interaction with them. They arrived promptly and had me up and running again within an hour. I would definitely recommend them.”
Nnigel bishop
★★★★★
“SMAR serviced our solar water heating system and replaced our original expansion tank, which was installed in 2010. They kept us informed on their arrival times and any issues. Matthew and his colleague were very pleasant and competent workers. Many thanks.”
LLynn Nelson
★★★★★
“Thanks to everyone one at Solar Maintenance. New inverter, battery and Zappi car charger. Thanks to Louis we got there in the end.”
PPauline Tanner
Get in touch

Book your free assessment and quote

Tell us when your solar thermal system was last checked and any changes you have noticed. We’ll help you arrange an inspection and a suitable plan for ongoing care.

Call 0330 111 9399

Email info@solarmaintenanceandrepairs.co.uk

Request a call back

Leave your details and a brief description of your requirements. Include relevant equipment details or fault messages where available.