HIU Service

Save money and get your annual HIU service from as little as £60 with our Group Booking Deals.

Servicing a HIU is paramount to its longevity in fact it is recommended to do so on an annual basis by all manufacturers. During a service we will test your units primary flow rate, T1, T2 and delta T to make sure you aren’t paying any extra on your energy bills for any unused kWh which can be caused by faulty valves letting by.

By servicing your unit it is vital in maintaining your HIUs highest possible temperatures for both heating and hot water as over time filters and valves get blocked up this results in poor flow rates which leads to insufficient heat transfer and in turn to low temperatures at the outlets. Book your HIU service today.

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All of our engineers are equipped with access to plugin software for Evinox and Intatec Smart Heat Interface Units. The plugin software for these HIUs is vital when servicing or repairing of these units as they grant our engineers access to all important parameters, alarm lists and calibration settings.

We cover all of Greater London, Essex & Kent. Call us today to book your annual HIU service 02038118420.

Service checklist:

Thorough inspection of HIU

Cleaning of all filters

Testing electrical components

Recalibrating vital settings

Testing of hot water & heating

Heat meter accuracy assessed  

Expansion vessel repressurised

Service certificate provided


HIU Maintenance Plan

For a fee of just £24.99 a month.

Our HIU Maintenance Plan allows you to relax and let us take care of any problems you may experience with your HIU.

12 Month Plan | T&Cs

  • By joining our maintenance plan you eliminate the stress of finding an engineer when you have a breakdown.

    We will send a fully qualified and well experienced HIU engineer to you free of charge between the hours of 08:00 and 18:00 Monday to Friday.

  • We will service your HIU free of charge.

  • If you’re experiencing any issues with your Heat Interface Unit we will not charge you for any repairs between the hours of 08:00 and 18:00 Monday to Friday.

  • Free dose of Fernox F1 Central Heating Protector.

  • You’ll qualify for priority booking of appointments and reminders prior to the date of your scheduled HIU service.

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