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Case Study of Air conditioning Heat-pump installation at All-Saints Church, Somerby, Leicestershire, UK (19/03/09)


Installation of Somerby Church air conditioning heat-pumps :

Orion air conditioning & refrigeration ltd were asked to look into the installation of a new church air conditioning heat-pump heating system for the All Saints Church, Somerby, Leicestershire (The first of its kind in England). All Saints church is a beautiful 13th Century Church with great architecture set in the picture postcard village of Somerby Leicestershire, UK. The church had around 200 meters/Squared of area that used a oil fired hot air system which had now failed and beyond economical repair. All Saints church Somerby was in need of a economical and green way of heating.

What air conditioning heat-pumps were installed in the church:

Units we installed include the 5 x  Mitsubishi Heavy Industrial - SRK63ZE-S1 Wall Mounted (6.3kW 21000 Btu) HYPER-INVERTER, 1 x Mitsubishi Heavy Industrial Mitsubishi Heavy Industrial SRK40-HGS Wall Mounted (3.7 kW 13000 Btu) Fixed speed heatpumpSRK40-HGS Wall Mounted (3.7 kW 13000 Btu) Fixed speed and 1 x Mitsubishi Heavy Industrial SRK20ZGX-S (2.8 kW / 9000 Btu) HYPER-INVERTER Air Conditioning units which provided enough heat for the entire building. These units have a amazing COP (5.45 initial input on SRK20-ZGX) which means that every 1000w of electrical energy going in produces 5450 watts of heat. For more information on heat-pump inverters please here.

Click here to see the TV coverage of this project.


Pictures of the church heat-pump air conditioning project:

Background of the church air conditioning heat-pumps:

Parish church councillor Fuad Hamzeh was quoted on various heating systems including wet systems such as radiators and oil fired boilers which came in almost four times the price of the Mitsubishi Heat-Pump air conditioning church units which where installed. The Mitsubishi heat-pump air conditioning systems provided a great value way of heating a beautiful old church within a short space of time and with little cost and also reduces CO2 emissions.

Church air conditioning Heat-pump efficiency and CO2 emissions:

This church air conditioning heat-pump system, because slightly undersized for the Mitsubishi Air Conditioning, Mitsubishi Air Conditioning srk-zgx,  Mitsubish iinverter Air Conditioning, HIGH C.O.P of 5.45 inputarea took around half a hour to heat fully but once warm the outdoor heat-pump inverter units slowed down because the temperature  had been reached therefore just pumping small amounts of heat in to maintain heat. The 200msq area was consuming 15 Amps on 1phase 240V supply. This works out to be around 25p/hour to heat this huge area and reduced CO2 emissions by at least 60%..

Heat-pump installation criteria:

This church air conditioning heat-pump installation was undertaken by lead engineer Arron Denton with assistance from installation engineer Craig Fogarty,  both employed and trained by Orion. Because the church is grade 1 listed extra care was needed to keep the integrity of the building in line with planning applications and keep the history of the church intact. All pipe and services were installed on the outside of the building on cable tray at the back of the church  and white plastic trunking within the building at low level (see BBC TV coverage for over view) which was later painted to fit in with the church colours. The church air conditioning heat-pump units have a life span of around 15 to 25 years depending on their use.  Installation time 14 days.

Conclusion of the All Saints Church air conditioning Heat-pump:

The installation was blessed on the 23rd March 2009 by the Bishop of Leicester the Right Rev Tim Stevens on his 2009 tour of the diocese and the event was televised on a BBC TV  channel on the 24th March. 

The general consensus was that All Saints Somerby must be the warmest church in England!!!!.


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Orion Air Conditioning & Refrigeration Ltd, 10 Grisedale Court, Woburn Road Industrial Estate, Kempston, Bedfordshire, MK42 7EE, UK

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Last updated - 22/07/2018