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Servicing and Maintenance Plans

When IU Energy proposes your new installation, you will be offered an annual service, maintenance and 24-hour breakdown plan at the outset.

No matter how energy-saving your plant and technology is, it will need regular servicing and maintenance and in the case of gas boilers, it’s imperative that you have a regular care schedule.

Even Solar PV and Solar Thermal need routine maintenance and cleaning, whilst Combined Heat and Power (CHP), Biomass Boilers and Heat Pumps must have annual services to keep them running optimally.


Our premium service and maintenance plans offer a 24-hour call-out service. If you aren’t a client we are still very happy to attend your breakdown inside office hours and we will offer you a premium plan after our first visit.

If you’re a customer of another company for Biomass, CHP, Gas boilers, Solar PV or Solar Thermal, we can still help you. One of our fastest growing services is fixing the breakdowns of plant we did not install, fitted by installers that have either ceased trading, or who are unable to rectify problems with their installations. 

Whatever your service, maintenance or breakdown need, IU Energy will be there to ensure the reliability and efficiency of your installation and put things right when the need arises.

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“Thanks for taking over so efficiently after things went very wrong with your predecessor – we all got there in the end – and Andrew and the rest of the lads have been first class: what would we have done without them? Go well.”


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We have engineers available 24 hours a day, seven days a week, 365 days a year.


One of our fastest growing services is fixing the breakdowns of plant we did not install, fitted by installers that have either ceased trading, or who are unable to rectify problems with their installations. 

If you are a client on a premium service plan, there is an emergency 24 hour telephone number in your paperwork. This connects directly with our on-call team.

If you are a client on a normal plan, you can book an engineer on 01752 26 26 26, during office hours.

If you’re a new client and need help with plant we haven’t installed, we are still happy to help and you can book an engineer during normal office hours on 01752 26 26 26. Our engineer will  attend your property or business as soon as possible, within normal working hours.

The efficiency of your biomass boiler system requires that it is maintained in optimum working order – this means  servicing it annually.

Our trained engineers will carry out the required maintenance operations to help ensure this. It also extends the working life of the boiler; all of this results in lower fuel bills.

We provide both planned maintenance and servicing for biomass systems. As part of our packages, one of our qualified and experienced engineers will attend your property or business to carry out a thorough annual service.

We will also attend your property or business for any reactive / emergency repairs.

This applies to both Air and Ground Source Heat Pumps.

To keep a heat pump working at peak efficiency, it is important that it is serviced annually, regardless of how it is used, or it may start to use more electricity than needed, thus undoing the COP value and increasing your energy costs, as explained in our heat pump page.

It’s also critical to ensure that the system’s heat exchange fluid – F-Gas – is not leaking, as your system will stop working altogether. External only units must also have their Glycol levels checked annually to avoid frost damage during winter months.

In between services, make sure your heat pump filters are cleaned to ensure they aren’t clogged. Vacuuming away the dust every 3 months is good practice, as is maintaining the area around your outdoor unit to ensure there are no leaves or weeds growing nearby.

You should make sure that your boiler is serviced at least once year, depending on its operating hours. Regular servicing will keep your boiler in good working condition, keep it safe, and limit wear over time. 

If you’re a landlord, it’s a legal requirement. A qualified Gas Safe registered engineer must, by law, check gas appliances and flues annually to ensure everything is safe and sound.

The required checks include boilers, but they also cover other gas appliances such as stoves and fireplaces.

Although harnessing the sun’s energy to power your business saves both money and energy, a damaged or malfunctioning Solar PV panel will undo this. Solar PV should therefore be inspected and serviced annually and as 90% of your generation is during summer months you have limited time to rectify any issues.

Solar PV is inherently very reliable, but a faulty panel needs swift attention – it is only cost-effective when it’s running properly, and like all  clients, you want to see the quickest return on your investment through energy bill savings. 

And of course, a dirty solar PV panel is an inefficient panel, which means you’ll need to use more grid energy than necessary. A few times a year, the panels should be inspected for any dirt or debris that may collect on them.

Solar Thermal systems require regular maintenance to keep them operating optimally.

Like any mechanical system looking after them correctly will increase both performance and life span. Our standard Solar Thermal servicing follows a checklist to ensure that the system is performing correctly. It includes numerous checks on the solar circuit and a variety of other electrical checks, checks on the pipe-work and insulation, examinations of the controller’s parameters, wiring and functionality and analysis of the cylinder’s position, controls and potential leaks.

Of particular importance is checking the Glycol levels in your system, to ensure it doesn’t suffer frost damage during winter months.

The efficiency of Combined Heat and Power (CHP) enables you to benefit from energy cost savings and reduced carbon emissions. With the right level of aftercare you can expect it to deliver continued reliability and longevity. You should maximise the benefits of CHP by following these steps with your maintenance package:

  1. Protect the gas engine with periodic inspection and servicing.
  2. Boost reliability with condition and performance monitoring
  3. Use live remote monitoring to prevent major problems
  4. Plan a maintenance regime
  5. Define the right maintenance package

Maintenance starts at the project design stage, when consideration must be given to good access for servicing and repair of equipment. CHP operating at part loads will run with reduced efficiency and maintenance costs will increase. That’s why maintenance is imperative to overall cost-efficiency over the system’s lifetime.

When planning your CHP, make an allowance for maintenance downtime at scheduled times – ideally when energy demand is lower than normal. A major engine overhaul is best carried out during a period when heat demand is low, such as in summer months. Alternatively, it could coincide with other specialist equipment maintenance downtime, such as boiler inspections.

Achieve set performance guarantees and warranties by servicing CHP units in accordance with the manufacturer’s instructions.

A reputable CHP supplier will offer comprehensive maintenance and service plans that cover:

  • Routine servicing.
  • Remote performance monitoring and fault diagnosis.
  • Equipment repairs.
  • Guarantees on CHP availability of operation.

IU Energy provides you with just such a plan.

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