Independent Heat Pump Design in London
Independent heat loss calculations, technical surveys and complete heating system design for London homes, renovations and extensions.
Heat Loss Hub provides independent heat pump design services for homeowners and property professionals throughout London.
Whether you are renovating a Victorian townhouse, extending a family home or planning a complete heating system replacement, the starting point should be understanding the building and its heating requirements before choosing the equipment.
We offer detailed on-site technical surveys in London, together with remote heat loss calculations and heating system design from architectural plans where the available information is suitable.
Based in West Yorkshire, Heat Loss Hub is an independent heating design consultancy. We do not sell or install heat pumps, and our recommendations are not influenced by equipment sales or installation commissions.
Our role is to establish what your property needs and provide a clear, technically considered design that can be used to plan and specify the installation.
OUR SERVICES
Independent Heat Pump Design Services for London Properties
A heat pump is one part of a complete heating system. Its performance depends on the heating requirements of the property, the radiators or underfloor heating, the pipework, the hydraulic arrangement and the temperatures at which the system operates.
Heat Loss Hub offers several levels of independent design work depending on the stage and requirements of your project.
On-Site Technical Heat Pump Surveys
For existing London properties, an on-site technical survey can establish the information needed for a dependable heating design.
Depending on the agreed survey scope, we assess:
- Room dimensions, layouts and building geometry.
- External walls, floors, roofs and insulation.
- Windows, doors and relevant construction details.
- Existing radiators and other heat emitters.
- Visible heating pipework and system arrangements.
- Potential heat pump and hot water cylinder locations.
- Available plant space and proposed pipework routes.
- Electrical supply information relevant to the proposed installation.
- Site constraints that may affect outdoor unit positioning.
The survey establishes the information needed to calculate the building’s heating requirements and identify practical considerations for the proposed system.
Where construction details cannot be established reliably during the visit, we explain what further information is required rather than treating an assumption as a confirmed fact.
Room-by-Room Heat Loss Calculations
A room-by-room heat loss calculation establishes how much heating each part of your home requires at the relevant winter design conditions.
The calculation considers heat lost through the building fabric, together with ventilation and air infiltration.
The results provide the basis for determining the total heating demand and assessing whether the existing or proposed radiators and underfloor heating can provide sufficient heat.
Unlike a general estimate based on floor area, a room-by-room calculation considers the individual characteristics of the property.
Heat Loss Hub can provide a standalone heat loss calculation or use the results as the foundation for a more comprehensive heating system design.
Complete Heating System Design
For homeowners who require more than a heat loss calculation, we can undertake a complete heat pump heating system design.
Depending on the agreed scope, this may include:
- Heat pump sizing and equipment selection.
- Radiator output assessments and replacement recommendations.
- Proposed heating flow temperatures.
- Underfloor heating requirements and system integration.
- Primary and secondary pipework sizing.
- Hydraulic arrangements and circulation pump requirements.
- Hot water cylinder sizing and reheat considerations.
- Proposed heat pump and cylinder positioning.
- Relevant acoustic, electrical and installation considerations.
- System schematics and design documentation.
The objective is to produce a coordinated heating system design rather than a collection of components selected independently.
Detailed underfloor heating circuit layouts and other specialist design work can be included as separately agreed services where required.
Learn more about our independent heat pump design service.
RENOVATIONS
Heat Pump Design for London Renovations and Extensions
Major renovations provide an opportunity to consider the heating system before important construction decisions become difficult or expensive to change.
A property being refurbished may have new insulation, replacement windows, altered room layouts, additional bathrooms and a mixture of existing and new heating systems.
These changes affect the heating requirement and how heat needs to be distributed throughout the building.
For example, a renovation might include underfloor heating on the ground floor, radiators on upper floors and an existing section of the property where insulation improvements are more limited.
All these areas need to be considered together.
Heat Loss Hub can help establish:
- The expected heating requirement of the completed property.
- Whether existing radiators and pipework are suitable for retention.
- How new and existing heating circuits should operate together.
- The required heating temperatures.
- Whether the proposed heat pump can meet the calculated load.
- How pipework, pumps and other hydraulic components should be arranged.
- What information the architect and building contractor need before installation.
We work with homeowners, architects and building contractors to help coordinate the heating design with the wider renovation project.
The heating system should be designed around the finished building, rather than simply replacing the existing boiler with a heat pump of similar output.
For further guidance, read our article on installing a heat pump during a renovation or extension.
REMOTE DESIGN
Can Your Heating System Be Designed From Architectural Plans?
Not every London project requires an on-site visit.
Where suitable architectural drawings and construction specifications are available, it may be possible to carry out the heat loss calculation and heating system design remotely.
This is particularly useful for substantial renovations, extensions and properties undergoing major alterations.
Architectural plans can provide the dimensions, room layouts, window areas and geometry needed for the calculations.
The proposed construction specification can establish the thermal performance of the finished building.
For a reliable calculation, however, both sets of information are needed.
For an existing property, the retained building fabric may also require additional information. An architectural drawing does not necessarily tell us how an original wall was constructed or whether existing insulation is present.
Where the information is sufficiently complete and reliable, remote design can avoid the cost and disruption of arranging an on-site survey.
We can initially review the available drawings and property information to establish whether this approach is suitable.
Read more about our heat pump design service from architectural plans.
SITE SURVEYS
When Is an On-Site Technical Survey Required?
Some properties require closer investigation.
This may be particularly relevant where the existing building construction is uncertain, the heating system contains alterations made over many years, or proposed equipment locations present practical constraints.
An on-site survey may be appropriate where:
- The property has solid masonry walls or other construction details that are difficult to establish.
- Existing radiators and pipework need inspecting.
- Accurate dimensions or floor plans are unavailable.
- The proposed heat pump position or pipe routes need examining.
- The property contains several heating zones, extensions or unusual layouts.
- The available drawings do not adequately describe the building.
The most suitable approach depends on the property and the design work being commissioned.
Our objective is not to recommend a site visit unnecessarily, but equally not to produce a design based on information that cannot be relied upon.
DELIVERABLES
What Will You Receive From Heat Loss Hub?
The documentation depends on the service commissioned.
Heat Loss Calculation Only
For projects requiring heating-load information, we can provide a room-by-room heat loss calculation showing the calculated heating demand and relevant design assumptions.
This is suitable where the customer or their heating contractor needs reliable figures before progressing with the wider design.
Full Heat Pump System Design
For a complete design commission, the documentation may include the heat loss calculations, selected heat pump, emitter requirements, design temperatures, hydraulic considerations, hot water specification and supporting system drawings.
The scope and deliverables are agreed before work begins.
Detailed Underfloor Heating Design
Where underfloor heating is being installed, we can also provide a separate detailed design service covering the proposed circuits, pipe spacing, manifold arrangements and CAD layouts.
This can be particularly useful during major renovations where floor construction, pipework routes and available installation space need coordinating in advance.
See our independent underfloor heating design service.
Our design documentation is intended to give the appointed installation contractor a clear technical basis for the installation. Final site verification, installation, commissioning and applicable certification remain the responsibility of the appropriately qualified parties.
EXPERIENCE
Experience With Older and More Complex Properties
London has a wide variety of housing, from Victorian and Edwardian terraces to detached homes, converted properties and modern extensions.
Older buildings can present particular challenges when planning a heat pump.
Solid walls, uncertain insulation, existing heating pipework, limited outdoor space and restrictions on alterations can all influence the design.
A large property may also require more detailed consideration of heating distribution, circulation pumps, plant space and hot water demand.
Heat Loss Hub brings practical heat pump installation experience together with specialist heat loss calculation and heating system design.
We approach each property individually, considering the actual building construction and the proposed heating arrangement rather than relying solely on property age or floor area.
Where a property is listed or situated within a conservation area, additional restrictions or approvals may need to be considered. Our technical design can help inform the process, but architectural, planning and statutory approvals remain separate responsibilities.
HOW IT WORKS
How Our London Heat Pump Design Service Works
1. Tell Us About Your Property
Begin by providing the property location, a brief description of the project and the design work you are considering.
If you have architectural plans, construction specifications or information about the existing heating system, these can help us understand the project.
2. Initial Review and Proposed Scope
We review the information to establish whether a remote calculation, an on-site technical survey or a more comprehensive design service would be appropriate.
We then confirm the proposed work, the information required and the fee.
3. Technical Survey or Remote Assessment
Where an on-site survey is required, we arrange a suitable visit to the London property.
For projects that can be designed remotely, we work from the agreed plans, specifications, measurements and supporting information.
4. Heat Loss Calculation and System Design
The building’s heating requirements are calculated room by room.
Where a wider design has been commissioned, the calculations are used to develop the proposed heat pump, emitters, hydraulic arrangement and other necessary system components.
5. Design Documentation
We provide the agreed calculations, schedules and design documents, together with the relevant findings and assumptions.
These can then be used to progress discussions with your appointed heating installation contractor.
FEES
London Survey Costs, Travel and Design Fees
Heat Loss Hub is based in West Yorkshire, but we undertake longer-distance technical surveys where appropriate for the project.
London survey visits are available by arrangement.
For projects requiring a visit, the quotation takes account of the property’s location, expected survey work, travel requirements and the design services requested.
Where architectural drawings and suitable construction information allow the work to be completed remotely, a site visit may not be necessary.
A standalone heat loss calculation will generally involve a different scope of work from a complete renovation heating system design.
For this reason, we do not advertise one fixed price for every London property or assume that every project requires the same design package.
The work and associated costs are agreed before the commission begins.
FAQ
Frequently Asked Questions
No. Heat Loss Hub is based in West Yorkshire and provides independent heat pump design services across England, Wales and Scotland.
We undertake on-site technical surveys in London by arrangement and also provide remote design services from suitable architectural plans and property information.
Yes, where the drawings, construction specifications and supporting information are sufficient to develop a reliable design.
This is particularly suitable for some major renovations and extensions where the proposed finished construction is well documented.
If essential information about the existing building is missing or uncertain, further investigation or an on-site survey may be necessary.
Yes. Existing radiators can be assessed against the calculated room heating loads and proposed system temperatures.
Pipework suitability also depends on the required flow rates, internal dimensions, circuit arrangement and available pump pressure.
A design can identify where changes may be required, although concealed pipework may need further verification before installation.
Yes. Heat Loss Hub provides independent underfloor heating design, including detailed CAD pipework layouts where commissioned.
We can also consider how underfloor heating and radiators should work together within a complete heating system.
Yes. Heat Loss Hub is independent of equipment sales and installation.
The purpose of our design service is to provide a technical specification that can be used with your chosen installer.
The installation contractor remains responsible for verifying site conditions, undertaking the installation and completing the applicable regulatory and certification requirements.
Ideally, before underfloor heating is installed, pipework routes are finalised or plant space becomes fixed.
Early design can help establish the heating requirements and highlight decisions that may affect the architectural drawings or construction programme.
However, we can also assist where a project is already underway.
GET STARTED
Discuss Your London Heat Pump Project
Whether you are planning a major renovation, considering a heat pump for an existing home or looking for independent technical advice before appointing an installer, Heat Loss Hub can help establish the appropriate next step.
Tell us about your property, the stage of your project and the design work you require.
If architectural drawings or construction specifications are already available, you can include them with your enquiry.
We will review the information and help establish whether an on-site technical survey or remote design service is the more suitable approach.
Independent heat pump design. No equipment sales. No installation commissions.
Alternatively, email hello@heatlosshub.co.uk with details of your project.