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Air Source Heat Pump Installation

This ASHP saved our customer £6,500 per annum in fuel costs by replacing their existing wet electric boiler.


This 2019 barn conversion style property was fitted with a wet underfloor heating system and unvented cylinder, but had a wet electric boiler. With the ever-rising electricity prices, the owners were looking for a way to permanently reduce their annual bill of £8,500, contacting NCS to discuss more cost-effective heating solutions. After an initial consultation, the property was deemed to be ideal for an Air Source Heat Pump (ASHP), as a logical and extremely economical upgrade for their heating and hot water system.

The Install

This property opted for a Mitsubishi Ultra Quiet R32 8.5kW Air Source Heat Pump and 200 Litre Pre-Packaged Cylinder, which allowed for integration with their existing heating and hot water systems and controls. The key features of this ASHP included a Seasonal Coefficient of Performance (SCOP) of 4.49, or yearly efficiency of 449% for heating, and quiet operation with a sound pressure level at 1m dB rating of just 45, quieter than the average fridge-freezer (40dB). The Pre-Packaged Cylinder benefits from rapid recovery rates, pairing with the 8.5kW ASHP to provide a flow rate of up to 24 litres per minute. In addition, the system was enabled to support MELCloud, offering wireless control via a smartphone app plus remote monitoring, maintenance, and tech support.

Thanks to the Boiler Upgrade Scheme, the owners were able to access a £5,000 government grant to reduce their installation costs. To be eligible for the Boiler Upgrade Scheme grant, you must:

  • own the property you’re applying for (including if it’s a business, a second home, or a property you rent out to tenants)
  • have installed (or plan to install) your new heating system on or after 1 April 2022
  • be replacing fossil fuel heating systems (such as oil, gas or electric)
  • have a valid Energy Performance Certificate (EPC) for your property, with no outstanding recommendations for loft or cavity wall insulation

The Outcome

The new system saw a 77% decrease in their CO2 footprint, down to just 2.5 tonnes per annum, in addition to providing an effective solution to their electricity cost problem, with a fantastic 76% saving on energy bills – reduced to just £2,000 a year. 

Case Studies

Saving £1,300 per annum in fuel costs

This customer came to us in the face of rising energy costs, with an ageing oil boiler and copper cylinder. With the installation of an Air Source Heat Pump, we reduced their bills by £1,300 annually, and their CO2 output by 76%.

Saving £6,500 per annum in fuel costs

We helped this customer reduce their annual fuel costs for their barn conversion by over £6,500 by replacing their electric boiler with an Air Source Heat Pump and 200 litre cylinder, and reduced their CO2 output by 77.27% per annum.

Saving £1,400 per annum in fuel costs

For this detached barn conversion with an annual fuel bill of £3,000 and carbon footprint of 7.8 tonnes per annum, we installed an Air Source Heat Pump and helped this customer to reduce their bills by 43% & CO2 output by 59%.