The solarventi is enjoying a rest. What a grey week it has been. Nevermind.
We have the answer to warm but dull days.
And it is an air-to-air heat pump, also know as an inverter, also known as an aircon unit.
We are pleased to announce that the Solarventi on the south side of the house has been balanced by an aircon unit on the northside.
The aircon unit uses refrigerant and a pump to extract heat and pass the heat energy via the refrigerant either into or out of the house.
Hence it is known as an inverter. It will heat or cool the house as your need changes. This model, mitsubishi heavy industry SRK20ZIX-S is the second most efficient on the market at the moment. (The hitachi model slightly more efficient is almost twice the price, so no economy there, bit of a posing stainless steel job I understand). This model has a COP of 5.5. i.e. generates 5.5Kw heat for every 1 Kw of electric used.
Installed by http://www.orionairsales.co.uk from bedfordshire.
Helpful bunch, 15% VAT on the web site is 5% if they install for you, as per current Govt VAT concession.
I recommend them. But please make sure they arrive with the exact model you ordered. It seems nobody including me noticed the switch to a far less efficient model by their supplier. Nearly collapsed with shock when I double checked.
As it is, 3 days in, and the unit is warming more rooms than I could have imagined possible, with outside temps of between 10 and 18 degrees c it's perfect. And puts off the day of the gas central heating starting up. Fantastic.
So air source heat pump downstairs, solarventi upstairs. This is good news for our fuel bills this autumn. I look forward to seeing how it works out in the coldest winter days, when the heat pump is less efficient.
