We have just bought a house built in 2003 on one level, 210 m², whose high temperature gas boiler has just failed. No luck. At the same time, it is an opportunity to ask questions about the modernization of energy production in our new sweet home.
Since we want to build a swimming pool (it is in progress), we therefore said to ourselves: why not find a source of energy production capable of ensuring central heating, DHW production, and heating of the swimming pool ?
We therefore wish to acquire a geothermal installation on groundwater.
It's a summary, it's been 3 months that we cogitate on the subject, and we think that the best solution is this:
- because we already have a well
because the radiators are made of aluminum, and are apparently adapted to the low temperature,
because apparently the Geo PACs are powerful enough and durable today to heat all that and last 20 years.
So I went to the Bordeaux fair (yes, I live in Merignac in Gironde) and I found 2 good craftsmen (I think) among the 12 or 13 that I consulted.
Both offer me (almost) the same solution:
- an outdoor Geo PAC (in a small room that I build and insulate well)
a buffer tank for central heating, just to not make too many short cycles on the heat pump
a 300 liter buffer tank for DHW
a heat exchanger between the well and the heat pump
a titanium heat exchanger to heat the pool
The differences :
The first offers a 13 kw NIBE heat pump (the F1145) and the buffer tanks (DHW and heating) inside the house
The second offers a WATERKOTTE Ai1 Eco Touch Geo 18kw heat pump and the buffer tanks (DHW and heating) next to the heat pump, so outside. It also offers 2 small DHW tanks of 15 liters closest to the 2 Bathrooms, so that hot water arrives faster.
Between the heat pump and the heating and DHW outlets in the house, there are 10 m outside (planned buried at 80 cm) and about 10 m in the attic, in insulated pipes.
Both are at the same price after negotiation: around € 2 excluding drilling of the reinjection well, and trenches. And excluding Tax Credit.
So here, there I block, and my choice can not come out:
NIBE is better than WATERKOTTE?
Is balloons outside a good idea? (I asked it to save space in the house)
Dear new friends, do you have an opinion on the matter?
Thank you for your answers.