Heat network management with control

Two engineers wearing hard hats and high‑visibility vests reviewing documents together indoors, with one holding a folder and papers.

End-to-end expertise. Total transparency.

Managing a heat network doesn’t mean doing it all yourself or giving everything away. ESCo Manager gives you the best of both worlds. Get expert support without losing sight of your heat network goals.

Everything under one roof

No more chasing suppliers, firefighting faults, or struggling to manage deficits. ESCo Manager wraps it all into one coordinated service.

Real flexibility, not just on paper

12-month rolling contracts mean you’re never locked in for decades. Adapt easily if things change for you or your residents.

Expertise you can rely on

From SLAs to seasonal energy spend, we know heat networks inside out, helping you recover costs, stay compliant and plan ahead.

Fewer complaints. Fairer bills.

Residents just want things to work. Supplier management and clear communication helps provide a reliable service that builds trust.

Trusted by the UK’s leading companies

We break it down.
You stay in control.

Finances that add up

Each heat network is treated as its own cost centre, so nothing gets lost. We reconcile income, monitor spend, and plan for decarbonisation, all while actively managing financial risks.

Joined-up operations

From heat interface unit (HIU) servicing to meter monitoring, our in-house team handle it all. That means fewer delays, better service, and less downtime for you and your residents.

Procurement made simple

We manage supplier delivery and secure fuel contracts that deliver value. You get a consistent, accountable service, while your residents enjoy fair pricing and reliable energy.

Compliance made clear

Quarterly reports give you the full picture on performance, finances, risks, and regulations. We keep you ahead of the curve and ready for what’s next without drowning you in data.

The Lock residential development, showing a tall apartment building with a brick façade and balconies, set against an abstract red and blue graphic background with trees visible in the foreground.

Case study - The Lock, Greenford Quay

Insite’s ESCo Manager service means that we can centralise the administration and management of a large and complex communal heating system. [...] It also enables us to ensure a high quality of service for our residents while keeping everyone’s costs down.

Anthony Atkinson

Estates & Customer Service director, Telford Homes

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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 ESCo Manager services

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10% reduction in heat losses

Reduced meter installation risk

ESCo Manager

A new way of heat network management