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Maintenance

Reliable support built around your network

Every network’s different. Insite Maintenance builds a plan that fits yours and sticks to it.

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Person adjusting an insulated Danfoss heat interface unit unit using a handheld testing device with cables connected.

Maintenance that works as hard as you do

With 50+ years combined engineering experience, we keep heat network assets, from heat interface units (HIUs) to energy centres, running, humming and heating without the drama.

Full-system coverage

Boilers, pumps, meters, HIUs – we maintain it all to ensure your system runs smoothly, reliably, and efficiently.

94% first-time fix rate

Our data speaks for itself. Fewer repeat visits, less downtime, and faster resolutions mean more trust and less disruption.

Pro care from plant to property

Gas Safe registered. ISO certified. Regulation-ready. Our engineers are sharp, skilled and safety-obsessed.

Residents kept warm, not waiting

Emergency callouts within 4 hours and clear comms on planned maintenance means no one’s left in the cold.

Certified for excellence
CHAS Elite accreditation
Gas Safe registered
DNV - Quality System Certification - ISO 9001
DNV - Information Security Management System - ISO/IEC 27001
SFG20 members
CHAS Elite accreditation
Gas Safe registered
DNV - Quality System Certification - ISO 9001
DNV - Information Security Management System - ISO/IEC 27001
SFG20 members

From first fault to full fix

Surveyed. Spotted. Sorted.

We start with a full network MOT; logging issues, raising compliance risks, and shaping a maintenance plan that fits like a glove.

Planned care. Prevent panic.

Our in-house engineers follow SFG20 and CIBSE CP1 standards, supporting compliance with water quality testing and BMS checks for high-efficiency maintenance.

HIUs handled. Meters checked.

Every HIU service includes meter checks for better meter health and automatic meter reads. Proactive appointment reminders also keep residents informed.

Fast fixes. Less downtime.

Agreed response times and a 94% first-time fix rate mean less downtime, fewer complaints and networks ready for future standards.
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Maintenance – South London
By providing proactive, ongoing maintenance, on top of repairing existing issues, in both the plant room and domestic dwellings, we can improve the efficiency across the network. This in turn means that costs of running it go down, making it a highly recommended service for all of our clients.
Steve Morris
Head of Engineering, Insite Energy
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YOUR TRUSTED PARTNER

Trusted by many,
delivering real results

Join over 90 leading housing providers and property managers who trust Insite Energy for support throughout the lifecycle of their heat networks. Whether you need a one-off fix or full end-to-end service, we work behind the scenes to keep costs on track and residents happy.

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Excellent

Our award-winning customer service is consistently rated ‘Excellent’ on Trustpilot.

94%

Our engineers resolve 94% of heat network issues on the first visit, saving time and reducing disruption.

40,000

We support nearly 40,000 homes across the UK with reliable, day-to-day heat network services.

Ask about our Maintenance services

If you’ve got any questions about how our services can help you manage your heat network, please fill in the below form. We aim to reply within 3 working days.

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