I don't understand why so many people think that you should just put up with 25C or more in the home during the summer but wouldn't dream of switching off the gas and living in 10C during the winter. I mostly work from home, with temperatures sometimes exceeding 30C in the summer, which was just unacceptable. I consumed 270 kWh (solar energy) to cool the house last summer, which fits your story about how cheap A/C cooling is when compared to heating using a heat pump. And 27 time less than the gas I used to consume for hearing during the winter months!
Installing Air to water HP in southern Europe should be a criminal offense. They are extremely overpriced and you need cooling anyways in the summer. Just get a fckin reversible AC.
I'm really happy heating my house using A/Cs. I previously burned around 7,400 kWh of gas to heat my home October through April. The A/Cs consume around 1,420 kWh. Plus 1,150 kWh to heat water, mainly for showers, as I haven't yet replaced my gas powered water heater. We have net metered electricity here in the Netherlands, so my PVs provide all of the electricity I need to power my home and EV. I estimate a payback time of around 7 years, based on my current energy contract of 30 cents per kWh electricity plus fixed charges. I didn't do this to earn money but to be honest I doubt that I'd have invested 16,500 Euros without any financial return. Let's hope I've still got 7 years left in me. 😋
In Norway we do not even have any natural gas infrastructure to speak of, so your choices are mostly heatpumps, resistive or burning wood. (burning oil for heating residential homes has been illegal for decades).
Another benefit: you can lower the temperature of your gas/oil boiler because of the second heating source it doesn't need to be as strong as before. This in return minimizes systemlosses.
I think a big problem with heat pumps is they're being installed like they're A/C units. If you're doing say new construction, you can have the heat pump exchange with the ground for the constant ground temperature in both winter and summer. In temperate climates, the summer ground temperature several feet down is basically free A/C, and in winter is much warmer than the external ambient temperature.
I live in the south of Europe with very hot summers and 2-3 months of cold weather. - I live in a flat that was last renovated in 2019, last floor and that suffers from what is called a greenhouse effect (very hot in the summer and quite cold in winter). Isolation is fair. - my flat is fully electric, no central heating so only electric radiators. I bought my house in the beginning of the summer, so my experience was only with the Aircon that was already installed (Heat Pump Daikin Sensira, funny enough like the example given in this video). The total electric consumption in the summer was quite good to the point that I had the Aircon constantly running. When winter and the cold days came, I did what everyone would do so I turn on the electric radiators… my average kilowatt spending was over 35kw daily and to be honest with very poor results in regards to comfort although spending stupid amounts of electricity. So I thought “I have a heat pump, let’s have it to go”… and that was exactly what I did with interesting results: - my electrical consumption went from more than 35MW to 10MW. - the comfort feeling of forced air heating he’s much better than the comfort provided by the electric radiators ( I can actually heat the whole flat instead of luck warming feeling just where I had the radiators). So yeah, I guess that the author of this video is correct in his analysis, very correct actually.
Also who wants to burn gas? Yes the majority of the primary load is still fossil fuel of choice* but grids getting greener and people want to support green choices if they can afford it. Here in Australia/Tasmaina, my summers are 35'c and winter can be -1/3'c for a week in dead of winter. Have a reversible A/C system and just added solar+battery so free AC in summer and cheaper running heating in winter. Also all of Tasmania's power is Hydro and Wind+solar so we are pretty lucky here.
Sure, but tearing your house down and replacing it with a passive house facing south will cost on the order of $200,000. Even if you can cut 100% of your heating costs, that's still about 80-100 years payback time While efficiency is great, it doesn't actually bring climate control needs to 0 in practice, and reversible ACs are still the best way to close the gap
CO2 helps plants grow, we are still in a ice age and warming up after 1850 a little bit what helps nature. India and China are more green today then 50 years ago. The real reason we should not burn fossil fuel and gas are toxines! We in Brazil have the highest level of "green" energy (hydro power, solar and wind) together with ethanol for car's. I have 3 heatpumps in my house for heating and couling, running on solar but i am against the green obsession in the west. These nuts break down society under the pretext of "save the world".
The effect of CO2 is more complex. All else equal, it would help plants grow faster, but if it causes excessive temperatures, lower precipitation, or extreme weather, the net effect can still be negative The story is bigger than climate change tho. Cutting greenhouse gasses, in this scenario, also means cutting down the demand for primary energy, while increasing economic activity at the same time. This is the classical "doing more with less". It helps the economy and, perhaps more importantly, national security I personally don't think we can "save the world" anyway, because extreme climate change will occur regardless of what we do in the west, driven by the emission growth in Asia. But getting ACs in Europe is a way to prepare for extreme climate, so this solution is a double whammy
I don't understand why so many people think that you should just put up with 25C or more in the home during the summer but wouldn't dream of switching off the gas and living in 10C during the winter.
I mostly work from home, with temperatures sometimes exceeding 30C in the summer, which was just unacceptable.
I consumed 270 kWh (solar energy) to cool the house last summer, which fits your story about how cheap A/C cooling is when compared to heating using a heat pump.
And 27 time less than the gas I used to consume for hearing during the winter months!
Installing Air to water HP in southern Europe should be a criminal offense. They are extremely overpriced and you need cooling anyways in the summer. Just get a fckin reversible AC.
I'm really happy heating my house using A/Cs.
I previously burned around 7,400 kWh of gas to heat my home October through April.
The A/Cs consume around 1,420 kWh. Plus 1,150 kWh to heat water, mainly for showers, as I haven't yet replaced my gas powered water heater.
We have net metered electricity here in the Netherlands, so my PVs provide all of the electricity I need to power my home and EV. I estimate a payback time of around 7 years, based on my current energy contract of 30 cents per kWh electricity plus fixed charges.
I didn't do this to earn money but to be honest I doubt that I'd have invested 16,500 Euros without any financial return.
Let's hope I've still got 7 years left in me. 😋
In Norway we do not even have any natural gas infrastructure to speak of, so your choices are mostly heatpumps, resistive or burning wood.
(burning oil for heating residential homes has been illegal for decades).
Another benefit: you can lower the temperature of your gas/oil boiler because of the second heating source it doesn't need to be as strong as before. This in return minimizes systemlosses.
I think a big problem with heat pumps is they're being installed like they're A/C units. If you're doing say new construction, you can have the heat pump exchange with the ground for the constant ground temperature in both winter and summer. In temperate climates, the summer ground temperature several feet down is basically free A/C, and in winter is much warmer than the external ambient temperature.
I live in the south of Europe with very hot summers and 2-3 months of cold weather.
- I live in a flat that was last renovated in 2019, last floor and that suffers from what is called a greenhouse effect (very hot in the summer and quite cold in winter). Isolation is fair.
- my flat is fully electric, no central heating so only electric radiators.
I bought my house in the beginning of the summer, so my experience was only with the Aircon that was already installed (Heat Pump Daikin Sensira, funny enough like the example given in this video).
The total electric consumption in the summer was quite good to the point that I had the Aircon constantly running. When winter and the cold days came, I did what everyone would do so I turn on the electric radiators… my average kilowatt spending was over 35kw daily and to be honest with very poor results in regards to comfort although spending stupid amounts of electricity.
So I thought “I have a heat pump, let’s have it to go”… and that was exactly what I did with interesting results:
- my electrical consumption went from more than 35MW to 10MW.
- the comfort feeling of forced air heating he’s much better than the comfort provided by the electric radiators ( I can actually heat the whole flat instead of luck warming feeling just where I had the radiators).
So yeah, I guess that the author of this video is correct in his analysis, very correct actually.
Also who wants to burn gas? Yes the majority of the primary load is still fossil fuel of choice* but grids getting greener and people want to support green choices if they can afford it. Here in Australia/Tasmaina, my summers are 35'c and winter can be -1/3'c for a week in dead of winter. Have a reversible A/C system and just added solar+battery so free AC in summer and cheaper running heating in winter. Also all of Tasmania's power is Hydro and Wind+solar so we are pretty lucky here.
So well explained
Ínteresting. Do you have reading recommendations on this topic?
And a gas boiler didn‘t create aditional maintenance costs adding to the AC?
22° is to much? Wtf? Where did this chart come from?
I'd really like to show you some computations I made for a report about rooftop solar in dense cities. How can I contact you outside youtube?
Passive solar houses facing south could heat homes cheaper.
Sure, but tearing your house down and replacing it with a passive house facing south will cost on the order of $200,000. Even if you can cut 100% of your heating costs, that's still about 80-100 years payback time
While efficiency is great, it doesn't actually bring climate control needs to 0 in practice, and reversible ACs are still the best way to close the gap
CO2 helps plants grow, we are still in a ice age and warming up after 1850 a little bit what helps nature. India and China are more green today then 50 years ago. The real reason we should not burn fossil fuel and gas are toxines! We in Brazil have the highest level of "green" energy (hydro power, solar and wind) together with ethanol for car's. I have 3 heatpumps in my house for heating and couling, running on solar but i am against the green obsession in the west. These nuts break down society under the pretext of "save the world".
The effect of CO2 is more complex. All else equal, it would help plants grow faster, but if it causes excessive temperatures, lower precipitation, or extreme weather, the net effect can still be negative
The story is bigger than climate change tho. Cutting greenhouse gasses, in this scenario, also means cutting down the demand for primary energy, while increasing economic activity at the same time. This is the classical "doing more with less". It helps the economy and, perhaps more importantly, national security
I personally don't think we can "save the world" anyway, because extreme climate change will occur regardless of what we do in the west, driven by the emission growth in Asia. But getting ACs in Europe is a way to prepare for extreme climate, so this solution is a double whammy