HIU Design

Heatlink has a wealth of experience when it comes to designing Heat Interface Units. It’s important to us that we always provide customers with a fit for purpose solution therefore with each and every unit we take specification, performance and cost criteria into consideration.

Every HIU is designed by our in-house team of specialists who make sure that all units are of the highest possible quality. Our HIUs are designed to reliably transfer energy from a heating network for communal heating to individual homes and apartments. The HIU design needs to be efficient and control precisely the amount of heat used in each dwelling.

The district heating design is something that requires careful consideration. The hot water is to be transported through an insulated pipe network which will then be distributed to various apartments and homes, and we will always work closely with you to make sure that the overall solution will give the best results.

Technical surveys

Technical surveys for both new and existing schemes, where an upgrade may be required.

Years of experience on schemes equipped with new consumer controls, meters and pre-payment units or automatic meter reading systems.

System designs on existing schemes and new designs provided for proposed installations.

Guidance on the effects of introducing consumer controls, meters and pre-payment systems on to existing systems.

Technical Data

Technical data on the selection of equipment for HIUs which would be designed specifically for each system taking into account the requirements for the consumer and the conditions under which these controls will be required to operate.

Assistance in the performance of HIUs if the system characteristics are changed or if dwelling heating or domestic hot water requirements are amended.

Wiring details for the operation of the consumer control packages.


Commissioning criteria for each dwelling type and specific commissioning procedures designed for each system.

Data on typical consumptions from many differing dwelling types.

Data on the efficiency of the heat raising plants and the heat losses from distribution pipework vital when looking at scheme performances and in the creation of tariffs.

Assistance on the installation of remote reading systems by either hard wire or radio transmission.

We provide FREE design assistance and technical advice on all aspects of the HIUs, for operation on both large and small installation contracts.

TYPE 1 Heatlink Bespoke Heat Interface Unit schematic e1548679489615 - HIU Design

Direct Heating with Primary Heating For Indirect Domestic Hot Water Storage Unit

Heatlink Type 2 Bespoke Heat Interface Unit  schematic e1548679314738 - HIU Design

Direct Heating with Instantaneous Domestic Hot Water via A Brazed Heat Exchanger.

Heatlink Type 3 Bespoke Heat Interface Unit schematic e1548679392465 - HIU Design

Heating and Instantaneous Domestic Hot Water via Independent Brazed Plate Heat Exchangers.

Heatlink Type 4 Bespoke Heat Interface unit schematic e1548679455500 - HIU Design

Primary Heating With a Plate Heat Exchanger for the Secondary Heating and Primary Supply to the Hot Water Storage Cylinder.

Type 5000 Bespoke HIU Heatlink e1550075594622 - HIU Design

Primary Heating with a Plate Heat Exchanger for the Secondary Heating and Primary Supply to the Hot Water Storage Cylinder.

Heatlink Company Brochure

Please fill out the form
to download the Heatlink
Company Brochure.

Inside The Brochure: 

  • History of Heatlink
  • Heatlink Product Range
  • Meter Reading, Billing & Prepayment Service
  • Our HIU Commissioning Philosophy

Contact Heatlink


+44 (0)114-231-3700
Monday – Friday
09:00 -17:00

General Enquiries:

Technical Enquiries: technical@hlts.co.uk

2A Baxter Rd
Sheffield, S6 1JF
United Kingdom