On Geo Flow, a resident can save up to 57% on energy bills, minimising bills to as little as £107 per year for heat.

Overheating assessments suggest bedrooms first, then living spaces, but we can design it room by room with your house types.

Much less than a conventional air conditioner because the ground is a much more efficient way to convert energy than air.

We need access to the home to carry out servicing every two years and any maintenance needed. This is booked in with residents in advance in the Flow app.

Boreholes can often be located beneath roads, parking areas or open space. Their position depends on ground conditions, utilities, access and the adopting authority’s requirements. We coordinate the layout, access arrangements and any easements with your design and adoption teams early, so the network does not delay your programme.

Yes. The Flow in-home equipment is designed to fit in the same standard cupboard as an air source heat pump cylinder, with no outdoor heat pump unit. The kit can also be installed modularly or in kitchens (like a fridge freezer) for homes with restricted layouts. We provide integration drawings for each house type.

Yes, Geo Flow is the most cost-effective way to achieve the Future Homes Standard, compared to an air source heat pump on every plot.

Ground source heat pumps can reduce peak electrical demand compared with an air source unit on every plot, so Geo Flow can lower your capacity requirements or help you deliver more homes for the same capacity.

No. We have our own compact rigs and in-house teams, so we can plan drilling around your groundworks and phase the commissioning of homes as they are built, so you can sell them faster. With our radial drilling methodology, we can limit disruption too. The programme, responsibilities and remedies are agreed in writing before work starts.

Geo Flow costs less than installing an air source heat pump on every plot, and without a noisy unit in the garden, you can build better, more sellable homes. It is the most cost-effective way to achieve the Future Homes Standard. And you and your residents have one accountable partner for the long term.

We do. We fund the network upfront and recover its cost through a low, steady resident tariff that residents pay over the long term.

Geological and heat-yield risk sits with Rendesco. We assess the ground through desk studies and thermal response testing, design with appropriate margin to CP1, and drill using our own rigs. We apply the same approach across bespoke and funded networks, with the agreed risk position clearly set out in the contract.

The handover pack includes onboarding & registration instructions, operation and maintenance manuals, as-built drawings, commissioning records, warranties, certificates and training information. We agree the exact list for each project.

The proposal explains what is included, how long the price is valid and whether indexation applies. The final price and commercial terms are confirmed in the contract.

We can provide integration drawings, connection schedules, electrical demand information, product data and commissioning requirements. The exact pack is agreed for the project stage and house types.

Ofgem regulation keeps the network running and residents protected, regardless of what happens to any operator. As a regulated network operator, we have continuity provisions that include corporate and funding structure, step-in arrangements, and escrowed O&M documentation.

Buyers need a clear explanation of the system, charges, responsibilities and support. We provide information for sales teams, residents and conveyancers so questions can be answered early.

We compare like for like against an air-source heat pump on every plot. The comparison includes the heating system, electrical connection, substations, land, site works, commissioning and programme impact.

Yes. We can provide HEM and SAP inputs for each house type, along with the product and network information your assessor needs.

We can provide an early review using the site location, plot numbers, house types and programme. We’ll confirm scope, timing and costs when we send you a quote. Get in touch with our sales team to learn more.

Yes. We provide standard information about ownership, tariffs, consumer protection and the network as the Ofgem-regulated operator that solicitors and lenders can use to support their buyers.

Yes, in some cases. We also deliver Design and Build projects where the client owns the system and appoints an operator. We’ll explain which commercial model fits your project.

Yes. Our heat pump can provide cooling as well as heating. To cool a home, it needs our fan coil units in place of radiators; they provide both heating and cooling.

It may be possible, but it is usually simpler and more cost-effective to plan cooling during the build. We’ll confirm what is practical for each house type.

Yes. We handle resident support for homes on our networks (and third-party networks across the UK). Our team is there to help with heating, hot water and cooling, as well as metering and billing. Rendesco Care is included for residents on our networks, which gives them monitoring, support and a service every two years. Their heat pump also comes with an 8-year parts and labour warranty.

As an Ofgem-regulated heat network operator and Heat Trust member, we follow consumer protection standards and best practices. This includes clear and transparent complaints procedures. Where complaints remain unresolved, residents can access the Energy Ombudsman.

Yes. To make our heat networks even more efficient, we can add our heat pump, battery storage and smart controller, optimised by our Flow platform to deliver customer savings of up to 50% compared with a standard heat pump.

We run a full CP1-aligned design and commissioning plan and coordinate engineering, manifold civils, plantroom install and plot interfaces to your build programme. Early checks include site electrical capacity and plot typologies to de-risk commissioning.

We provide Ofgem-compliant metering, with flexible billing options for customers, accessible in the Flow app. Charges are transparent and clearly explained.

We follow CIBSE CP1 across the full heat network lifecycle, from feasibility to operation and maintenance. For heat pumps under 45 kW, we also follow MCS standards.

On Geo Flow, there are no meters. Your heat pump uses electricity to generate heat. On Geo Hub, we use meter readings to determine your monthly bill.

Most homes are comfortable between 19°C and 21°C, but set the temperature that feels most comfortable to you.

On a Geo Flow network, you will get a ground source heat pump, cylinder and smart controller. On a Geo Hub network you will have a Heat Interface Unit and smart controller. You own the equipment in and around your home.

Rendesco Care gives you monitoring, a 24/7 support line, a service every two years and member rates on anything outside the plan. It’s included when you live on a Rendesco network. Separately, your heat pump has an 8-year parts and labour warranty, with 2 years on other installed equipment.

The Flow app automatically runs your systems for you. You can monitor and control your equipment any time from the app.

Yes. The controller optimises operation to maintain comfort through cold spells (for example, steady operation and smart preheating during off-peak hours).

Modern units are quiet and must meet MCS020(a) noise planning checks for permitted development in England (from 29 May 2025). The updated standard simplifies the test (37 dB LAeq,5min at the neighbour’s assessment point) and allows more flexible siting (for example, up to two units for some dwellings and a larger external unit volume). We assess siting and, if needed, recommend compliant acoustic measures.

Rendesco Flow is everything you need to live in a comfortable and efficient home with low bills. The kit includes a heat pump, hot water cylinder and smart controller, with optional solar and battery storage. Manage your home experience in the Flow app.

Any increases are communicated to residents 30 days in advance through their preferred communication method.

Yes, as an Ofgem-regulated network operator and Heat Trust member, we offer extra support for vulnerable customers, such as alternative bill formats, nominated contacts and welfare checks, which are consistent with Heat Trust best practices. Speak to our support team to learn more.

Contact us on our support page to let us know when you are moving out. Our team will ask you for details like a final meter reading so we can send you a final bill and close down your account.

Heat network operators are regulated by Ofgem, which means we follow consumer protection standards, including clear and transparent complaints procedures. Any complaint that remains unresolved can be escalated to the Energy Ombudsman.

Most schemes have a fixed charge for running and maintaining the network, and sometimes a charge for the heat you use. Payment options may include monthly billing or pay as you go, which you can find in the Flow app.

No. Each development has one heat supplier because the network is a shared utility. However, you are entitled to disconnect your equipment and use a different heating system.

A heat network is a shared system that brings low-carbon energy to homes and buildings. Buried pipework connects each property to an energy source, such as boreholes that draw energy from the steady temperature underground.

Inside your home, you’ll have either a Heat Interface Unit or a ground-source heat pump. This turns the energy from the network into heating and hot water, and can also provide cooling.

While the energy is shared, your home is controlled individually. You can manage your heating, hot water and cooling through the Flow app.

Our customer care team will work to resolve your complaint quickly. If you are still unhappy after the supplier’s complaints process, you can contact the Energy Ombudsman.

That’s normal. Heat pumps run steadily for longer periods to keep your home comfortable and work efficiently.

Yes, this is usually normal. Heat pumps use lower water temperatures than boilers, and are more efficient while providing the same comfort. If your rooms are not warm enough, try adjusting the settings of your equipment or check your radiators.

A little ice and an occasional defrost cycle are normal in cold weather. If thick ice remains or the unit keeps stopping, contact our support team.

Yes. Regular servicing and routine checks keep a heat pump performing well for longer (cleaning filters and coils, checking refrigerant and electrical connections, and verifying flow rates). Rendesco Care includes a service every two years.

Yes. You can use the Flow app to manage schedules, temperatures and quick changes.

Systems periodically heat stored water to sanitise the cylinder (usually to around 60°C). Your controls can manage this automatically.

Heat pumps are more efficient than gas boilers, producing three units of heat for each unit of electricity used. By pairing a heat pump with battery storage and off peak tariffs to optimise consumption, you can save even more.

Yes, our heat pumps also provide cooling as standard. You just need fan coil units installed in your home instead of standard radiators.

We maintain the network infrastructure, and the tariff you pay covers this. It also includes Rendesco Care, so we look after your in-home equipment too.

Flow optimises performance for year-round comfort.

Modern heat pumps are quiet, like any other home appliance, and we position equipment to keep any noise to a minimum.

Depending on your home, tariff, usage and in-home equipment, you can save up to 50% on your energy bills with a heat pump compared to a gas boiler.

The service boundary is agreed in the contract. It usually covers shared equipment and the communal network up to each property. In-home equipment can be covered through Rendesco Care, paid for by you or by individual residents.

Service levels, including response times, priorities and KPIs, are agreed in your contract. We measure our performance against them and report it to you every month.

We keep a full asset register, service and fault history, meter records and performance data. This supports planned maintenance, reporting and the evidence you'll need for Ofgem and HNTAS.

Just send us your asset list or operation manuals, maintenance history and any outstanding defects. If some records are missing, we can fill the gaps during mobilisation.

We offer a complete O&M service, covering planned and reactive maintenance, remote monitoring, optimisation, asset management and compliance reporting. We also provide a full metering and billing service with resident support. You can choose everything or just the parts you need.

We agree a mobilisation plan with you covering assets, data, resident communications, billing and support. Everything is set up and tested before we start operating your network, so there are no gaps in service.

We provide clear, easy-to-understand bills and a 24/7 helpline for any queries or heating issues. We keep residents informed of planned work and outages, and offer extra support to vulnerable customers, including those with health, accessibility or financial needs.

We remotely monitor your network 24/7 using live data directly from the building management system and equipment. We track temperatures, efficiency and heat losses to identify faults early, often before residents notice them.

We collect readings remotely wherever possible and arrange another reading method when needed. Missing or faulty reads are flagged and fixed quickly, so estimated bills are kept to a minimum. We don't back-bill beyond Ofgem's 12-month limit.

Yes. We operate third-party networks as well as our own. We start by verifying your assets and records, setting up remote monitoring, connecting to your meters and, if we're handling billing, introducing ourselves to your residents.

Yes. We’ll assess your network and provide a costed improvement plan. We can then look after it for you through our operations and maintenance service, keeping it running at its best.

Yes. We'll ensure your network meets Ofgem regulation by delivering transparent pricing, complaint handling, vulnerable customer support, reliable supply and the required service standards. We'll also provide the data for your Ofgem reporting.

Yes. We'll review your networks against the developing HNTAS requirements, close any gaps and maintain them to the standards. We'll provide the KPI reports and compliance evidence you need to stay compliant.

Yes. We can take care of billing your residents from start to finish: meter reads, issuing bills, collecting payments, debt recovery, changes of tenancy, billing queries and complaints.

Typically access, compound space, spoil arrangement and trench windows shared with your groundworks. This is itemised per project in the drilling attendances schedule.

Geological and heat-yield risk sits with us. We assess the ground through desk studies and thermal response testing, design with appropriate margin to CP1, and drill using our own rigs. We apply the same approach across bespoke and funded networks, with the agreed risk position clearly set out in the contract.

Yes: we provide full D&B services to a performance spec, or build to a developed design with our drilling and installation scope defined around it. We confirm with clients where designs should be adjusted to ensure successful commissioning before contracting.

Yes. We provide BIM models, coordinated schematics, point lists and operation and maintenance manuals.

Yes, we deliver scalable heat networks and bespoke heating systems to meet the needs of our clients. We’ll recommend the best option for your site, budget and long-term needs.

We plan retrofit work carefully to keep disruption and downtime to a minimum. This can include temporary plant, phased changeovers and off-site fabrication, with clear safety and quality checks throughout.

Yes. Our in-house team provides operations, maintenance and remote monitoring.

Yes. We help clients prepare robust applications and technical packs to gain project funding.

Yes. Our designs support Part L compliance for non-domestic buildings and take account of the Future Buildings Standard.

We manage commissioning in line with CIBSE guidance. We test performance, plan seasonal adjustments and provide support after handover.

We typically deliver open protocol integration (for example, BACnet and Modbus) with point lists and sequence narratives for smooth handover to your BMS.

Yes. We can integrate heat pumps with existing boilers, chillers and heating systems. We’ll design clear controls and metering so you can check performance.

We design hot-water systems to meet HSE guidance and manage Legionella risk. This may include temperature controls, pasteurisation cycles or auxiliary heating.

We use data from thousands of UK boreholes to size ground collectors accurately, so a Thermal Response Test is not always needed. If you prefer one, we can carry it out in line with GSHPA guidance.

We support projects from feasibility and detailed design through to installation, commissioning and ongoing maintenance. This includes borefields, drilling, plant design and remote monitoring. We work to the relevant CIBSE, BSRIA, HSE and BS EN standards.

Yes. We work with open-loop, closed-loop and surface-water systems. We’ll assess what is practical and manage the relevant Environment Agency requirements.

Rendesco Care, including monitoring, support and servicing, continues as part of your monthly tariff, and we keep looking after the network. Once the warranty has ended, repairs and parts are charged at member rates.

The warranty and service history stay with the property.

Yes, but we confirm the time in the app and visits usually take less than an hour.

Get in touch on our Support page. We can check the bill for you.

No. There’s no boiler and no gas. Your heat pump’s service every two years is included in Rendesco Care when you live on one of our networks, and we’ll book visits with you in the Flow app.

That’s okay. Register with us at your earliest convenience to control your heating and manage your account in the Flow app. Otherwise, we’ll continue to send paper bills.

The heating works the same. Depending on your tenancy the network charge is either in your rent or paid directly.

Yes. Get in touch to add a household member to your account.

Try logging out and back in, or reinstalling the Flow app. If that doesn’t work, open a support ticket.

Call us before it becomes a worry. We can provide payment plans and we support vulnerable customers.

Your monthly tariff is set by home type, so a 4-bed detached pays more than a 1-bed apartment. Your electricity use is your own: occupancy, temperature settings and hot water habits all move the cost.

Heat pumps warm homes gently and steadily rather than in blasts like boilers. That’s how they keep running costs low. Set a comfortable temperature and leave it, rather than turning it up high and off again. If a room never gets comfortable enough, open a support ticket.