The biggest reason to not install ground source heat pump is high installation cost. This means that it makes more sense for larger residential buildings. Also If you have district heating available then this might be more economical in the long run.

But would it be easy or obvious what to do next? Absolutely not. Everything is simple if you have pockets full of money, live in temperate climates and do not rely on energy intensive (and hard to electrify) industries like the Nordic countries.

For example, about 25 per cent of the total energy consumption in Finland is used to heat buildings. Wood burning is about half of the total heating in distric heating systems which account about half of the total heating for buildings. Also heat-storing fireplaces are still a small but a crucial part of the total picture. A lot of extra energy capacity is needed just make sure you stay alive during the coldest months even if some of the systems fail.

Nordic countries have cheap electricity mostly for two reasons: very stable interconnected electric grid and lots of different renewable energy sources. Arguably, hydropower is the most important because it can stabilize the intermittent wind power which in many places we have more than enough already. Nuclear energy is also a major part of electricity production in Sweden and Finland.

And yet our electric grid or electricity production capacity is far from ready to handle even the more realistic dreams of "full electrification" we are told in the media. It will take many years just to get the grid ready.

And what happens if the stablest renewable, hydropower, fails? We might find it out this year as hydropower reserves in Norway are at the lowest level in 20 years. Hydro generates about 90% of Norway's total electricity.

Sauna and hot climates may sound counterintuitive, but it has been tested by most Finns that when you come out of a hot sauna any outside temperature feels cool.

I also agree that 66F (about 19 degrees Celsius) is not comfortable during day time. It is fine for sleeping temperature. During winter homes in heating dominated climates typically have higher indoor temperatures. One advantage of lower inside temperature is that relative humidity stays slightly higher when it is very cold outside.

This would be a very large machine and you would need to provide a sample to it in a test tube or similar manner. Automated blood analyzers in hospitals are maybe the closest thing to a such device.

To summarize the article: On average, 199 cable faults per year from 2010-2023. Two thirds of these faults are caused by external forces like fishing vessels. Most cable faults are not made public. The preliminary data from 2024 suggests slightly more publicly disclosed faults, but nothing extraordinary. It is hard to detect the physical cause of cable damage. One likely cause is inexperienced crews on poorly maintained ships.

Personally, I do not believe all the cable faults in the Baltic sea are pure accidents. Russia (and China) have found the "perfect" way to test how we react and play their games. This testing is nothing new and it has happened before in many forms. It is likely that we have not even noticed some of the testing or they are not made public.

[1] https://blog.telegeography.com/is-it-sabotage-unraveling-the...

I found one research article from 2020 titled "Assessing Rodent Gnawing of Elastomers Containing Soybean Oil Derivatives". It did not find statistically significant difference in rodents gnawing when soy oil derivates were added to plastics. Maybe they have found a way to remove the tasty components.

https://pubs.acs.org/doi/10.1021/acssuschemeng.0c05868

I also try to buy lightning fixtures that are designed anti-glare although they are more expensive. You can also make pendant lights yourself with led strips and aluminium profiles.

Your eyesight and glasses also matter a lot. My glasses are quite worn with lots of scratches. They definitely make issues worse.