schnokobaer

These devices probably cause < .1% of fatal pedestrian accidents and are electronically speed-limited, meanwhile for the device that causes 99% you put the responsibility of keeping speeds safe in the hands of individuals ranging from considerate over careless to outright methheads.

is often ridden on footpaths and walking areas

Why could that be? Maybe it has something to do with the fact that those are the only places where said 99% mode of transport responsible for 7,500 pedestrian deaths a year is banned and streets, where e-scooters should normally a go in cities, are designed for 2.5 tonne cars going 40?

The limit makes sense.

I mean yea, it does, but it is in essence just another concession to car dependency. Can't curb pedestrian deaths because infrastructure is dogshit, drivers are careless and cars become more and more unsafe? Just regulate the hell out of every means of transport other than the one causing all the deaths and make getting from a to b as hard as possible for everyone not driving. Helps to a) blur the blame and cause some infighting (for instance, this post) and b) getting more people in cars must mean fewer pedestrian deaths right?? also more cars sold and no expensive infrastructure changes. Phew.

So how is it not a valid argument? It's blatantly obvious that if cars were invented right now, with models as they are right now, safety concerns would be through the roof and they'd be regulated to hell and back with electronical speed-limits just like e-scooters are right now. The only reason cars are not limited in such a way is because they are a legacy device, part of America's cultural identity and with a uncontrollably powerful lobby behind it so any attempt in that regard would immediately lose you public support. You're asking for more well considered arguments, but I'm wondering what your argument is that cars should not be speed limited, other than that's just the way it is, let everything concede to the status quo?

We heff eckssidentally repläced wan bulb with a kaltweiß kind, Wolfgang get ze shotgun

And what is the problem with a gas hybrid heat pump? It's an ideal solution for places that get very cold, use the gas furnace for the weeks when it's below -5 and use the heat pump for many months around that. It's one of the most efficient ways to use a heat pump as you don't have to bully it through the coldest part of winter with very bad COPs, you're only using it when it's most efficient. And when your heating period is very long, that will only benefit your seasonal COP. So of course it's more expensive than a simple furnace, but it will also save loads of energy and redeem itself after 5-10 years.

The best part about this is you already have an AC, aka a heat pump, but you don't use it for heating?

Added "overview" as a new default section for profiles

This is great and long awaited, however it also means months of muscle memory down the drain again 😂

gas furnance that was somehow under-dimensioned – the idea is that in the real cold days you’d still have the good ole fireplace

Oddly enough I've never encountered that in Germany, I only ever see catastrophically oversized furnaces that start cycling in March... Seems to me plumbers never really worry too much about correct dimensioning, they just put the same 20 kW furnace that they know and love to install in every apartment and single family home. For some it will be somewhat adequate, for some it'll be oversized, who cares, customers never complain when the furnace cycles, but when it's too cold, you've got a problem. Same as they're never too worried about finding suitable supply water temps. Just set it to 80 and you're good, it's the customer who pays horrendous gas bills, not you lmao. That's also why everyone thinks their Altbau has to have 80°+ supply water when they have never really tried anything lower to see if it maybe suffices. My parents had their oil-furnace on 80C supply for the past 40 years and last winter when everybody was trying to save as much energy as possible they figured out you can set it to 55 as well.

Okay, I suppose you wouldn't do that when replacing and old furnace but rather go for a hybrid system. In Europe loads of people are reacting to hiked gas prices and have perfectly fine furnaces in place that they don't want to get rid of.

but assuming they’re saying that it’s saying that $0.63 worth of natural gas gives you the equivalent thermal output of 1kWh

Correct (although $0.063), and interesting to see you seem unfamiliar with this, this is the standard way of listing energy prices in Europe, it's not just that site. That site was just my first hit when I looked up Canadian energy prices. It's the low heat value and it's determined by the energy in a fuel if not allowed to condense (which is the relevant value for a traditional furnace, if you have a more modern condensing furnace you take the high heat value) and it makes it relatively easy to compare different sources of energy.

Canada is huge, and some of that landmass is in the Arctic circle.

What people never realise is that being far up in arctic climates doesn't only impair an SCOP. Yeah the lowest temps are very cold, but that means temporarily bad COPs. An SCOP is made up of the whole heating period though, which in colder climates is longer, so in turn you have several months more of the time where heat pumps are extremely viable with temporary COPs above 5 or 6 saving loads of energy. The real problem is if your lowest temps are so low that a heat pump will stop working entirely, in which case you get a hybrid system or just leave your old furnace in as backup, which is even better for your SCOP because you omit the month(s) with the worst COP and only use the heat pump when it's most viable. Let's say you live in Tuktoyaktuk and heating period is basically all year, then you have your furnace on for 3-4 months but you're saving massive amounts of energy with your heat pump in the other 8-9 months of the year.

touching on the nuances of the word “efficiency”

I actually tend to avoid using that term for heat pumps anyway, as it's not really correct in terms of physics. What makes heat pumps so viable is a coefficient of performance, their actual electrical efficiency isn't all that good at 50-60%, but it's also kinda irrelevant. It's sometimes easier to just call it efficiency, but like you say, once you go into the nitty gritty it falls apart.

People think that's a killer argument against heat pumps when it absolutely isn't.

In that sort of climate you get a hybrid system or just leave your old furnace in as backup. You'll use the furnace for the couple of days/weeks when it is below -25c/-13f and use the heat pump for the 6 months around that time window and save huge amounts of energy because you only use the heat pump when it's most efficient. A hybrid system will improve efficiency because it combines the technologies at transition temps while just keeping the old furnace as backup is obviously much cheaper, since you can also get a smaller unit than you normally would because you don't have to worry about the coldest period.

SuperTuxKart

if your energy cost for that source of power is high, it’s going to lose the financial argument every time.

How high, is the question. How much more is electricity where you live that heat pumps "lose the financial argument every time"? Where I'm from a kWh of electricity is roughly 2.8-3x that of natural gas, so most modern heat pumps will beat that, some by quite a margin.

If globalpetrolprices.com is to be trusted and Canadian natural gas is 0.063 CAD and electricity is 0.165 CAD you're very much in the same boat with a 2.6 ratio. Most heat pumps should be able to beat a 2.6 SCOP even in Canada.

So, sure, the study only looks at COPs and not at overall cost, but I think it's not unreasonable to expect home owners to be able to divide electricity price by gas price and compare it to the SCOP of heat pumps on offer.

Too cold, too cold...

In Germany this will likely still be a controversial take in 2026. Our political right managed to shift this debate into ideology territory and a good chunk of people believe heat pumps are environmentalists' fever dreams that don't really work in cold Germany.