ᐅ Additional costs absolutely ZERO

Hello,

I want to have a house built— a single-family home with 112m² (1,206 sq ft) of living space. I assume that, according to the 2009 Energy Saving Ordinance, all houses are very well insulated. Since I’m not a fan of throwing my money away to big energy companies, the house will be equipped with an air-to-water heat pump, a ventilation system with heat recovery, and a photovoltaic system on the roof.

My simple thinking is this: the photovoltaic system generates electricity, the air-to-water heat pump uses electricity, and the ventilation system helps prevent mold and, because it operates with heat recovery, I won’t need as much electricity to keep the house warm.

I’m open to being convinced otherwise!

Best regards

Hello,

Slimjim81 schrieb:
...Since I’m not a fan of handing over my money to the big energy companies, the house will have an air-to-water heat pump, a ventilation system with heat recovery, and a photovoltaic system on the roof.

The basic concept is quite good, but it assumes that all key parameters are suitable for an air-source heat pump and that the entire system has been accurately sized and calculated. Additionally, the respective COP and performance curves provided by the manufacturers must be taken into account. A seasonal performance factor of about 3.5 should then be achievable.
However, the additional costs will unfortunately not be zero! 😉
Best regards

Slimjim81 schrieb:
Hello,

I want to have a small house built. A single-family home with 112m² (1206 sq ft) of living space.
I assume that according to the 2009 energy saving regulations, all houses are very well insulated. Since I’m not a fan of throwing my money at large energy companies, the house will have an air-to-water heat pump, a ventilation system with heat recovery, and a photovoltaic system on the roof.

The idea is: the photovoltaic system generates electricity, the air-to-water heat pump uses electricity, and the ventilation system prevents mold and, because it operates with heat recovery, I don’t need as much electricity to keep the house warm.

I’m happy to be proven wrong!

Best regards

Hello!

A heat pump is good, heat recovery ventilation is good, but there is actually no direct connection to photovoltaic systems.

Directly feeding solar power into the house network is economically unviable and technically difficult or impossible.

By the way: How many people is the 112m² (1206 sq ft) (+ cellar?) intended for?

Best regards,
TomTom1

TomTom1 schrieb:
...A direct feed of solar power into the house network..

There was no reference to this.

Best regards.

Slimjim81 schrieb:


Because it’s obvious: a photovoltaic system generates electricity, and an air-to-water heat pump consumes electricity...
Best regards

So there was no connection to direct feed-in at all... Well, how did I ever come up with that idea?

TomTom1 schrieb:
- how did I even come up with a connection there?

Maybe distinguishing between power (kW) and energy (kWh) helps a bit? :o

best regards