What is the price of a HIU (Heat Interface Unit)?
The cost of a heat interface unit (HIU) will vary depending on the application and system requirements.
Here, we explore some of the key factors that can influence HIU selection and overall project costs, helping you identify the most suitable and cost-effective solution.
What factors affect the price of a heat interface unit?
The overall cost of a HIU is affected by its type and performance. Using a twin plate HIU (indirect Heating & Domestic Hot Water) as an example, these factors are:
Product performance: a twin-plate HIU can be engineered for performance, this can result in larger plate heat exchangers, higher performing valves and sensors or more effective insulation. The BESA test regime for HIUs is an effective way of benchmarking product performance.
Pack contents: some HIUs will be delivered with accessories or fitting packs as standard, for example isolation valves, heat meters or first fix installation kits.
- Connected services: HIUs can be delivered with a connected service package as standard, such services can provide the ability to remotely monitor and control products providing an advantage in after-sales service.
Do I need a warranty with a heat interface unit?
Though a warranty isn’t mandatory, it does provide protection and peace of mind that support will be on hand should anything not work as expected. Depending on the warranty itself, there will be an additional cost, though most HIUs will have one as standard.
With a warranty, you can remove the worry of costs because of unexpected issues and that an expert team will be able to identify the problem swiftly, with a resolution quickly reached.
Is servicing needed for a heat interface unit?
Servicing is a requirement for most warranties. Therefore, having one at least once a year is a necessary expense that can prevent further complications and give you total peace of mind that your unit will work as expected, when you need it to.
Heat interface unit expertise by Baxi
At Baxi, our expert team can help you understand the cost of having a HIU installed at your premises, including parts, warranties, and other additions that you’ll need to factor in. Learn about our HIUs here.
Take a look at Baxi's AquaHeat HIU
For homes fed with heat from a heat network, the Baxi AquaHeat is the answer to your apartment’s heating and hot water requirements. Perfectly suited to supply heat to communal and commercial premises in your development.


