Air Source Heat Pumps

photoSJB Mechanical & Building Services Ltd are experienced in the design, installation and maintenance of renewable energy heat systems.

Integrating environmentally friendly technology into new build and refurbishment building projects offers immediate and long term advantages.

Environmentally Friendly Heating Engineers

Wherever possible, SJB Mechanical & Building Services recommend the use of renewable energy sources. In many instances, renewable energy heating systems make a positive contribution to reducing energy bills, lowering the carbon footprint, and providing a reliable source of energy. Recent breakthroughs in commercial solar power generation make solar a viable option throughout the year.

For year-round energy needs, SJB Mechanical & Building Services regularly recommends Air Source Heat Pumps to our clients. Air Source Heat Pumps are recognised as a renewable energy source for the simple reason that they produce more useable heat energy than they consume.

For optimum environmentally friendly heating solutions, SJB Mechanical & Building Services are able to integrate renewable energy sources to provide hot water and central heating throughout the year.

Approved Installers for Heat King

We are approved installers for Essex and East Anglia, for Air Source heat Pump manufacturers Heat King.

Economically Effective Heating Engineers

Rising gas prices and fluctuations in fossil fuel-dependent electricity costs have seen energy bills soar in recent years.

In many local authority areas there can be significant difficulties in gaining planning permission for new build commercial properties that depend upon gas heating. Gas is not a green energy source so it gives a negative rating for the approval of planning permission. Solar thermal and solar photovoltaic systems invariably receive positive ratings while energy efficient Air Source Heat Pumps gain the maximum score for the approval of planning permission.

Air Source Heat Pumps are:

  • Eligible for the Microgeneration Certification Scheme (MCS)
  • Eligible for the Domestic Renewable Heat Incentive Scheme (RHI)
  • Eligible for Enhanced Capital Allowance (ECA)

Microgeneration Certification Scheme (MCS)

Air Source Heat Pumps installed by SJB Mechanical and Building Services Ltd, are extremely energy efficient and are eligible for the Microgeneration Certification Scheme (MCS). Created to encourage nationally recognised standards of quality, the MCS is supported by the Department of Energy and Climate Change. We are MCS accredited heating engineers, recognising our expertise and giving our customers extra peace of mind.

The scheme specifically relates to green technology that efficiently generates heat or electricity from renewable sources. The Government has put in place financial incentives like the Microgeneration Certification Scheme (MCS), the Renewable Heat Incentive and the Smart Export Guarantee, to encourage awareness and a wider use of sustainable energy. To find out more about this scheme visit the Microgeneration Certification Scheme website.

Smart Export Guarantee

The Feed-in Tariff was replaced by the Smart Export Guarantee [SEG] in January 2020, and works in a similar way to the Feed-in Tariff. However to take advantage of the scheme, you must have a smart energy meter fitted. This enables your energy provider to see how much unused energy you are sending to the National Grid. Because of this, the payments you receive are likely to be less than with the former scheme. This is due to a more accurate reading, as opposed to an estimation. Although, as energy providers pay varying rates, you will now be able to shop around for the best deal.

Eligible for SEG?

The same technologies apply to SEG as with the Feed-in Tariff, these are : –

  • Wind
  • Solar photovoltaic (solar PV)
  • Micro combined heat and power (CHP)
  • Hydro
  • Anaerobic digestion (AD)

There are still limits to the outputs allowed with these systems of 5 megawatts, or up to 50 kilowatts for micro-CHP.

Renewable Heat Incentive Scheme Update

Following the success of this scheme within the domestic sector, the government increased tariff rates. The Department for Business, Energy & Industrial Strategy (BEIS) responded by publishing new rates for 3 of the eligible renewable heating technology types. New air source heat pumps [ASHP], ground source heat pumps [GSHP] and biomass systems have been eligible since 2016.

Heat Demand Limits

The BEIS has also introduced heat demand limits, creating a boundary which financial support for participants must stay within. The limits are:-
ASHP: 20,000kWh
GSHP: 30,000kWh
Biomass: 25,000kWh

Solar thermal will not be subject to a heat demand limit.

Air Source Heat Pump Technology

Air Source Heat Pumps take low grade latent heat energy from the outside air and convert it to high grade energy which can be used to heat air and water. In simple terms, Air Source Heat Pumps use a similar compression/condensation cycle familiar in domestic refrigerators.

  1. As long as the refrigerant is colder than the ambient air temperature, the refrigerant expands as it comes into contact with the outside air.
  2. The vapour moves to a compressor where increased pressure raises the temperature.
  3. The hot vapour moves to the condenser where it emits heat as it condenses.
  4. The refrigerant moves through an expansion valve where the temperature and pressure fall before it returns to the evaporator.

Through the use of energy efficient heat exchange technology, Air Source Heat Pumps work effectively at temperatures as low as -20C making them the ideal product for the British climate.

Typically, for every 1kW of electricity used, an Air Source Heat Pump will generate around 3-4kW of useable heat energy. To some extent this is dependent upon the outside air temperature, but not as much as might be expected.

There are two measures used to judge the effectiveness of heat exchange systems.

  • The Coefficient of Performance – The CoP measures the energy efficiency of a heating system on any given day)
  • The Seasonal Coefficient of Performance – The SCoP is the measure of the energy efficiency of a heating system over the entire year.)

Samsung Monobloc Air Source Heat Pumps provide a CoP of 4.35 and a SCoP of 3.5. To put this in perspective, Samsung Air Source Heat Pumps continue to work at 90% efficiency at temperatures as low as -10C.

Air Source Heat Pumps for Domestic, Commercial & Multi Occupancy Buildings

photo2SJB Mechanical & Building Services work in the domestic, commercial and industrial sectors. Using the most technologically advanced Air Source Heat Systems from the biggest manufacturers, including Mitsubishi, Daikin and Samsung, allows us to create bespoke heating systems for every environment.

Samsung Monobloc 16kW is a cost effective heating system for most domestic purposes. The Samsung Mono installed by SJB Mechanical & Building Services is an air-to-water system, converting latent heat into useable hot water at temperatures of up to 60°C. This is more than adequate for most domestic hot water and central heating requirements. The Samsung Mono can be linked to an existing hot water storage tank or we can install a Samsung cylinder unit which integrates a hot water tank with the control kit, water pump, 2-way valves, air vent, relief valve, RF receiver, wireless thermostat and wired remote control.

Split Air Source Heating Systems are air-to-water systems capable of providing hot water, central heating and underfloor heating.

The Samsung TDM Air Source Heat Pumps work as both air-to-water heat systems and air-to-air heat exchange systems. The air-to-water unit TDM provides controllable hot water and central heating while the air-to-air facility provides warm air during cold weather and – by inverting the condenser/compressor cycle – acts as an air conditioning system during hot weather.

Typical Home Heating Cost Comparison – Diesel V Air Source Heat Pump

Heating a typical home using diesel will cost around £4000 per year. If an Air Source Heat Pump is installed, the running cost will be roughly halved, to £2,000.

The Heat Pump system will cost roughly £8,000 to install, with the investment repaid within 4 years.

Please remember, these figures are intended as a rough guide, for a free survey and quotation please call us on 01277 823648.

Air Source Heat Pump Manufacturers

There are several well known and respected manufacturers of air conditioning units and air source heat pumps. We deal with several, including Samsung, Daikin, Mitsubishi Electric and Mitsubishi Heavy.



Recent Air Source Heat Pump Project

SJB Mechanical & Building Services recently installed Air Source Heat Pumps in a block of four, one bedroom flats, located on reclaimed land in Rainham, Essex. The development was specified as a Green Source Energy building. We installed underfloor heating in each flat with energy provided from a Samsung Monobloc EHS Air Source Heat Pump. As well as ongoing energy cost savings, installation and capital savings were achieved by using a Monobloc system as opposed to a Split Air Source Heat System, as the outdoor and indoor units could be located in close proximity.

This is a good example of all parties in a building development working hand in hand to deliver the optimum environmental and economic solution. The client had requested that Air Source heat pumps be considered. The architect worked this into the building design, and SJB Mechanical & Building Services designed and installed the system.

For more information on Air Source Heat Pumps please call SJB Mechanical & Building Services Ltd on 01277 823648.
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Air Source Heat Pumps, Environmentally Friendly Energy, Renewable Heat Incentive Scheme, Microgeneration Certification Scheme, Solar Panels, Plumbers, Heating Engineers, Gas Engineers, Central Heating, Underfloor Heating, Drainage Installation & Repairs, Air Conditioning Servicing & Maintenance, R22 Replacement, Renewable Energy, Gas Safe Registered, Bathrooms, Showers, Washrooms & Toilet Facilities, Hot Water Cylinders, Pipework.