this post was submitted on 14 Apr 2024
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Climate - truthful information about climate, related activism and politics.

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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world.  About 1C of total warming.  Second chart:  about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability.  Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases.  About 0.5C of cooling with large error bars from SO2.

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[–] Blue_Morpho@lemmy.world 11 points 7 months ago (4 children)

How is this even a question? Heat pumps have been standard in new homes for at least 40 years now.

[–] OneOrTheOtherDontAskMe@lemmy.world 26 points 7 months ago (1 children)

Don't know what municipality/region/state/country you're from, but that's not the case here

[–] Blue_Morpho@lemmy.world 0 points 7 months ago (1 children)

The article is about NYC where buildings are all much older than 50 years. But for the rest of the country? Everyone has known that heat pumps are more efficient for decades which is why they are standard for all new installs. Unless you live in northern Canada, they save money which is why everyone chooses them. Of course there is backup heat for extreme cold which is why it's always hybrid heatpump with electric or glass backup.

[–] frezik@midwest.social 1 points 7 months ago (1 children)

Smart thermostats are what make them really good. In climates where it gets really cold, you need to have a way to switch over from pumping cold air to pumping hot air to using a secondary heat source.

It wouldn't have to be that smart, or even networked. A z80 or 8008 processor would have been plenty. High end systems could have done it in the 70s, with costs coming down quickly through the 80s.

[–] Blue_Morpho@lemmy.world 2 points 7 months ago* (last edited 7 months ago)

In climates where it gets really cold, you need to have a way to switch over from pumping cold air to pumping hot air to using a secondary heat source.

That's standard for all whole house heat pumps and has been for forever. ( as opposed to the mini split heatpumps where it's a heatpump for one room in a house).

[–] BigMikeInAustin@lemmy.world 11 points 7 months ago

Not in all US states and not in all countries. And some climate deniers are even fear-mongering people against heat pumps.

[–] silence7@slrpnk.net 6 points 7 months ago (1 children)

They haven't been standard in colder parts of the US — people use natural gas, propane, or fuel oil depending on where in the country.

[–] Blue_Morpho@lemmy.world 3 points 7 months ago (2 children)

I can believe that because many people choose the absolute cheapest solution rather than looking at the 5-10 year cost of ownership.

Technology connections YouTuber is in Chicago and chose a heat pump because it's cheaper. I have a relative in Minnesota and they are on a ground sourced heatpump because it's so much cheaper long term.

There's not much population in the US further north than the middle of Minnesota.

[–] legion02@lemmy.world 3 points 7 months ago (1 children)

Last time I looked in to it I'd still need a supplemental heater for when it's too cold for the heat pump to be effective (there were a handful of weeks just this/last year where we would be in trouble) in Chicago.

Ground source makes a lot more sense for new construction where you're already digging.

[–] Blue_Morpho@lemmy.world 2 points 7 months ago

Backup heat is standard with all whole house heat pumps. You pick electric or gas based on cost.

[–] Rolder@reddthat.com 2 points 7 months ago

Also doesn’t help that a lot of houses in the US are just really old and still have their original fossil fuel based heating.

[–] WalrusDragonOnABike@reddthat.com 2 points 7 months ago (1 children)

The main reason I'd be hesitant to get one is because I don't really ever set my thermostat to heat. Even during the once-in-a-lifetime freeze a few years ago, we never ran any heaters (granted, we live in an apartment, so only like 2.5 walls are exposed to the outside - would be very different in an actual house, but I'd still rather opt for better insulation, a single space heater, and a heated blanket over spending that same money on a heat pump that does nothing for years at a time).

[–] Blue_Morpho@lemmy.world 4 points 7 months ago* (last edited 7 months ago) (1 children)

If you live in an apartment, it's not your choice but the owner's? And a heatpump is an air conditioner in the summer. They cost about the same so why not have the option to heat too?