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Case Study 2 Daikin Air to Water Heatpump, Unvented Cylinder & Oversized Radiators 

Air to Water Heatpump System = Ivybridge, Devon 
 
We were contacted by a client in Ivybridge, Devon with an interest in replacing their old gas boiler and radiators with a new renewable energy system. 
 
The property, a 5 bedroom detached home built in the mid eighties, has cavity wall insulation, new double glazing throughout and roof insulation, but no floor insulation. 
 
The existing heating system was a wall mounted gas boiler housed in the garage feeding a hot water cylinder and a mixture of old and new radiators. The cold water supplies to the first floor bath taps and cylinder came from a storage tank in the roof space. Each shower in the house was separately pumped. 
 
We decided the best option would be to fit the Daikin low temperature split heatpump which consists of an outdoor unit, linked to a wall mounted indoor unit called a hydrobox (located in the existing boiler position). It meant upgrading the existing radiators and replacing the hot water tank as the new heatpump system ideally needs to be run at 45Deg c water temperature rather than the 60Deg c plus temperature the existing gas boiler produces. 
 
As the client had plenty of water pressure, we re-piped the cold supplies so now all fed off the incoming mains, removed the old pumps feeding the showers as these were no longer required and finally, removed the cold water tank in the loft, leaving a dry roof. 
 
Our Technical Surveyor calculated the overall heatloss of the building on a room by room basis to allow the correct sizing of the heatpump and radiators. 
 
It was decided to wall mount the outdoor unit onto the side of the garage facing the fans away from the house and down the garden. It also meant the outdoor and hydrobox units were reasonably close reducing the amount of pipework required. 
 
As the ground floor rooms in the house had engineered oak flooring laid with existing radiator tails protruding through the oak flooring, it meant we were somewhat restricted with the radiator sizes. Fortunately triple convector radiators, which are standard sizes but super high in output saved the day. 
 
We are delighted with the new heating system and the service from the initial survey and through the installation. The guys were very friendly, neat and tidy and spent a bit of time at the end of the job explaining how to best operate the system. The biggest improvement is the water pressure to our showers. It’s great not to have to be woken up to noisy vibrating shower pumps in the morning. Overall we are delighted with AMS and would not hesitate to recommend them to family and friends” 
 
Mr & Mrs C - Ivybridge 
If you have a similar type of property and feel this method of heating could be of interest to you, why not contact us and arrange for one of our technical surveyors to carry out a FREE OF CHARGE survey and quotation for you home. Click the link below; 
 
 
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