this post was submitted on 30 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.

Recommended actions to cut greenhouse gas emissions in the near future:

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[–] GammaGames 31 points 6 months ago (2 children)

The new rules would shift most new electric water heaters to heat-pump technology, which typically uses less than half the amount of electricity that many older models use.

I know one very specific person that will be delighted by the news!

[–] NoIWontPickAName@kbin.earth 23 points 6 months ago

What we need in this world is someone willing to do a 4 part video on them, and buy 2 of them.

[–] OsaErisXero@kbin.run 18 points 6 months ago* (last edited 6 months ago)

𝆕𝆕 chillingly smooth jazz 𝆕𝆕

[–] ReallyKinda@kbin.social 29 points 6 months ago (2 children)

Can we please also mandate landlords to update appliances in rental units if they’re not footing the electric/gas bill? So tired of paying obscene rates for inefficient appliances that I have no control over.

[–] silence7@slrpnk.net 9 points 6 months ago (1 children)

In the case of hot water heaters, they need to replace them every 20-30 years as they corrode, which means that the old one will leak and create expensive water damage if not replaced. They'll buy what's on the market, which means ones that meet the new standards.

[–] piccolo@ani.social 1 points 6 months ago

20 to 30 years? Maybe if your very diligent at replacing the zinc anode every 3 years. Most only last 10 years.

[–] BastingChemina@slrpnk.net 4 points 6 months ago (1 children)

Since last year I think there is a law like that in France. For renting an apartment it need to be audited to get an energy performance certificate.

If the performance is too low (low insulation, inefficient heating system ...) then the apartment can't be rented, or if it is rented the judge can allow the renter not to pay rent until the renovations have been done by the landlord to bring the performance to an adequate level.

The minimum performance level is going up every few years until 2030 or something like that.

[–] ReallyKinda@kbin.social 3 points 6 months ago

That sounds like a great policy, hopefully other countries will follow suit!

[–] Zozano@aussie.zone 11 points 6 months ago

I got my heat pump installed two weeks ago and I am LOVING it.

I had gas previously, and I hated having to organise the gas company to come and switch the bottles every few months.

200L of hot water does my family of 3 just fine.

[–] admiralteal@kbin.social 5 points 6 months ago (3 children)

One note for anyone getting ready to switch to a heat pump water heater themselves: the fuckers are pretty loud. Make sure it's somewhere where the noise won't bother you when it's installed.

Newer models are getting quieter but the damn things are almost as loud as a small, modern window air conditioning unit when running.

Mine was installed right in the dead center of my house. Works great but I have to close several doors to not hear it at night (and I have it set up to mostly run overnight, though in someone else's situation it might be possible to have it run while everyone is out of the house at work or some such instead).

[–] silence7@slrpnk.net 7 points 6 months ago

Volume varies a lot by model. There are quieter ones.

[–] tiredofsametab@kbin.run 3 points 6 months ago

That's not my experience living here in Japan with one. Might be different makers/standards/requirements per country, though.

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[–] MacStache@programming.dev 4 points 6 months ago

Good, now do the same for AI datacenters and cryptomining.

[–] metacolon@lemmy.blahaj.zone 3 points 6 months ago

Isn't anyone gonna comment that in the picture there's a flying end of a bed on the wall??

[–] ramble81@lemm.ee 2 points 6 months ago (2 children)

Hmm, I couldn’t find anything about tankless heaters. I absolutely love that I never run out of hot water, especially after my wife takes her shower.

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

Per the actual rule:

As discussed in section II.B.3, DOE is finalizing standards for all consumer water heaters, with the exception of gas-fired instantaneous water heaters, in this Final Rule.

So there has been no change to the rules for tankless heaters.

[–] admiralteal@kbin.social 3 points 6 months ago (1 children)

Believe It or not there are electrical tankless heaters. I actually installed one not too long ago because it made sense in a very odd application.

Mostly they're a terrible idea though.

[–] silence7@slrpnk.net 4 points 6 months ago

Yeah, they're pretty rare and almost never the best option. I don't think I've actually encountered one.

[–] fubarx@lemmy.ml 2 points 6 months ago

We switched to an externally mounted tankless when our big ole water heater conked out. It's way more energy efficient, but everyone has to run the water for a good minute until it kicks in and makes it through the pipes

I'll look into a heat pump once this one dies, but running water during a drought is just wrong.