System Sales & Design
Vaillant's System Sales & Design team is dedicated to supporting customers every step of the way with bespoke heating system designs for a variety of projects. As the demand for low carbon heating solution grows in the housing market, our expert team offers tailored services for our both our new build and specification customers.

Backed by extensive product knowledge and experience in designing and specifying advanced heating systems, our team excels at assisting customers with technical queries and providing guidance on Vaillant systems. Whether you’re navigating complex project requirements or looking for innovative heating solutions, Vaillant’s specialist specification team is backed by our in-house design and technical support team to provide support at every level.
Whether you’re new to heat pumps or would like some additional support in navigating complex project requirements, Vaillant’s System Sales & Design team is here to support you every step of the way.
Our expert team delivers for one-off installers and specifiers:
- Estimation of the building space heating load
- Heat pump sizing and product selection
- Recommendation and guidance on accessories and system controls
- List price Vaillant material quotations
- Product and design technical support
- System schematic diagrams
- Fully indemnified designs
- Emitter schedule
- Heating pipework sizing and routing
- Cylinder sizing
- Hot and cold pipework sizing and routing
- Ancillary equipment selection
Team expertise: Each member of our team has their specialist field, for example, heat pumps, new build and commercial projects. So, you can be confident that your needs are being handled by our experts.
Legislative support: All of our system designs are fully indemnified, meeting the latest legislative requirements across all sectors and are in line with best practice standards.
Bespoke services: Using the latest computer software, our team creates unique system designs tailored to your project. We provide everything from schematic drawings, heat loss calculations and CAD drawings, allowing us to find creative solutions for even the most unique requirements.

Step-by-step process for a quote:
Gather all of the project information, including project requirements, building regulation requirements and any design particulars
Complete the online Vaillant Heat Pump Survey request form
You will then receive a Specification pack from Vaillant, including heating and hot water designs, quotation and schematics. We’ll aim to share this with you within 25 working days.
As well as technical support, we can give you guidance on the best system application for your project and provide any manuals or documents you will need for your installation.
For one-off installers
For support with your designs, please submit a request on our online Vaillant Heat Pump Survey request form - https://myvaillantdesign.aeternoai.com/survey
Your Area Sales Manager can put us in touch and let the team know how best to support you. Alternatively, please contact us on:
Opening hours:
Monday – Thursday 9am – 4:30pm
Friday 9am – 3pm
For specifiers
For queries relating to your design, please quote your bespoke design ‘V’ number.
vaillant-design@vaillant.co.uk
Opening hours:
Monday – Thursday 9am – 4:30pm
Friday 9am – 3pm
Please note: Our designs are provided free of charge as a value add based on information that is shared and not independently verified by Vaillant or Vaillant’s third party contractor (i.e such as at a site visit). Vaillant can make no representation or warranty that the designs provided are accurate. We recommend that you obtain professional or specialist advice or work with Vaillant directly before taking any action on the basis of the designs.