These clients have an old solid stone property with some solid brick extensions. The house was heated by an LPG gas powered Rayburn which was proving inefficient and inconvenient from a control point of view. The compact cylinder was in a cupboard above the Rayburn. The radiators were fed on a one pipe system which is supposedly not possible to run with a heat pump system.
They had the Rayburn removed to free up space in the kitchen and we stripped out the old cylinder to be replaced by a plate loaded unvented cylinder in the rather tight space.
The Clivet heat pump could only be sited on the front elevation of the property and the primary pipes were taken through the 600mm rubble filled stone wall and then up to the new cylinder.
The system has been running for a few months now achieving an average COP so far in excess of 5:1. The clients are very happy with the steady temperature in the property which they like to maintain at around 18°C although we have designed it to run at a higher temperature if desired.
Customer Comments
“Having no mains gas in our village, when it came to replacing our old central heating boiler we wanted an alternative to oil or LPG. Wanting to take advantage of the government grant we looked at an ASHP. The general consensus seemed to be that you needed underfloor heating or big radiators at the very least. And for an old house like ours it wasn’t the best choice. However Aquatherma came and took a thorough look at our existing set up and were confident they could build us a system that worked, using our existing one pipe radiators. They came across as very knowledgeable and enthusiastic about working with an older house.
We have had the ASHP heating our hot water since July and now have more hot water at a higher pressure than we have ever had. We switched on the heating in October and so far if has exceeded our expectations. Keeping our old house at a consistently warm temperature all day. So far it is costing less than our previous gas and electricity.
Tom, James and Angelo were easy to work with from start to finish, very responsive throughout, and continue to be so now the system is up and running. Quickly responding to our questions, even on a Sunday evening when we had a technical glitch.
We are really pleased we took the risk and look forward to a warmer winter.”



