Air Source Heat Pumps 

We have been installing Air Source Heat Pumps (ASHP) since August 2014. This fantastic piece of equipment creates hot water, it will heat your house and provide all your hot water requirements in the same way as a normal boiler. The difference between a normal boiler and a ASHP is that you get up to 4kW of heat for every Kilowatt of electricity, that’s up to 400% efficient. Standard boilers work between 60-95% (From Scottish Power’s website)


Because Air Source Heat Pumps are so incredibly efficient the Government (OFGEM) offer a grant to help with the cost of the installation. The offer is called the Boiler Upgrade Scheme (BUS). BUS works by giving you £7500.00 towards the cost of the installation so you only pay the difference on completion of the installation. The grant is subject to terms and conditions, the main being that your property must have an Energy Performance Certificate and that there are no recomendations for upgrading the property’s cavity wall insulation and/or loft insulation. You can check you EPC here.

The BUS application process is ‘installer-led’ you just confirm that we have made the application on your behalf.

The process is:

  • You accept and sign the quote/contract.

  • We make the BUS application on your behalf.

  • Ofgem contact you to confirm that the application is correct.

  • We confirm all the details and liase with Ofgem.

  • We both receive conformation that the voucher has been issued.

  • We arrange a convenent date with you for the installation.

  • The system is fully installed & commissioned then we raise the certification required.

  • You pay us the price quoted less the £7500.00 from the grant.

  • We receive the £7500.00 directly from Ofgem. 

The above process is very simple and requires a minimum amount of input from you, the client.  

I have chosen to work with Vaillant heat pumps because of the reputation they have for outstanding quality, reliability and service. They have their own team of engineers specifically for the Heat Pump systems so if a problem occurs under warranty you can be assured that you will get expert attention from the manufacturer.

Steve Duckworth Electrical is a registered Vaillant Advance Renewables Partner. 


Vaillant's aroTHERM Plus Air Source Heat Pumps

The aroTHERM plus provides heating and hot water from renewable energy. It’s perfect for both new build and retrofit properties that demand low running costs, high efficiency, and an environmentally friendly solution.

The aroTHERM plus is an outdoor unit which comes in a variety of outputs to suit every property.

The benefits of the aroTHERM plus:
With the aroTHERM plus heat pump you can reduce your carbon footprint and contribute to climate protection by already meeting future building regulations

The aroTHERM plus system is suitable for a broad range of properties with underfloor heating and/or a radiator system. Depending on the heat demand and living space of your home, it will be suitable for retrofit projects

Designed for a peaceful home, the aroTHERM plus system has very low sound emissions: reassuring for you and your neighbours

With sound power as low as 54dB(A) the aroTHERM plus 3.5, 5, 7 and 12 kW outputs have been accredited with the Quiet Mark.

ErP A+++ rated with a SCoP up to 4.88, your monthly running costs for heating and hot water can be reduced by more than 10% compared to a replaced oil heating system

Compatible with app-based controls to allow you to control your heating on the go

Inverter driven technology - Modulating compressor - Heat pump only works as hard as is required to heat the property giving increased system efficiency, lower running costs and a longer lasting appliance

High quality you expect from Vaillant - Precision German engineering, built with quality at its centre as well as operating in conditions down to -20°C


aorTHERM Plus


Just a small selection of our Air Source Heat Pump Installations


This system is designed to provide all the hot water and heating requirments for a 3 bedroom family home. The system comprises of a 7kW Vaillant aroTHERM Plus  Air Source Heat Pump and a  Vaillant uniTOWER, see below. 


This uniTOWER was installed as part of the above system in Clitheroe. Located in the garage to replace the old boiler the helps to  simplify the installation. The uniTOWER encloses the Domestic Hot Water Cylinder, divert valve, expansion vessels, decoupling module and all the other ancillary equipment in one very neat unit. 



This system is designed to provide all the hot water and heating requirments for a 4 bedroom family home. The system comprises of a 12kW Vaillant aroTHERM Plus  Air Source Heat Pump, uniSTOR 300ltr Domestic Hot Water Cylinder, Vaillant Hydraulic Station and a Heat Exchanger, see below. 


This is the Hydraulic Station, Cylinder and HEX Unit located in the garage at the above installation. We have several options to chose from should your situation require a smaller space to accomodate the equipment. 



This system is designed to provide Domestic Heating to a large barn conversion. The system consists of 1No. 12kW Vaillant aroTHERM Plus Air Source Heat Pump.



This system is designed to provide Domestic Hot water and Heating to a large barn conversion. The system consists of 1No. 10kW Vaillant aroTHERM Plus Air Source Heat Pump and a Vaillaant uniSTOR 300ltr Cylinder.



This system is designed to provide Domestic Hot Water and Heating to a very large house. The system consists of 3No. 11kW Vaillant aroTHERM Air Source Heat Pumps, 1No. Vaillant 300Ltr DHW Cylinder (Additional Storage) and a 4000Ltr Buffer Vessel.


This project is an outbuilding used as a Pool House and Bar. We installed a 8kW Vaillant aroTHERM  Air Source Heat Pump to provide heating via the new under floor heating system.