this post was submitted on 02 Mar 2024
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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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Why Mainers Are Falling Hard for Heat Pumps | The percentage of households burning home heating oil is the highest in the country. Yet no other state is adopting climate-friendly heat pumps as fast. (www.nytimes.com)
submitted 8 months ago by [email protected] to c/[email protected]
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[–] [email protected] 6 points 8 months ago (1 children)

The technology is making it possible... They can work "as heat pumps" in far colder climates than they used to not all that long ago. Allowing them to avoid switching over to electric strips heat longer.

I'm not wishing our system to have problems but the new compressors are pretty amazing! But of course, like everything, they're expensive too :)

[–] [email protected] 7 points 8 months ago* (last edited 8 months ago) (1 children)

The cost isn't that bad if you are up to DIY. You can get 3 ton/36k btu mini split units that will heat/cool 1500 sqft for around 3k.

You have to have power pulled to the outdoor compresor, but otherwise you drill a first sized hole in your external wall, mount the internal "head" unit over the hole and run the power/compressor/drainage hoses down to the outside unit. Bend the compressor hoses into a bundle, plug everything in, turn it on. Lots of great youtube guides.

Depending on what the electrical runs costs you, you may be able to get it all done for 5k.

[–] [email protected] 3 points 8 months ago

That's true, I was mostly thinking of full central air/heat systems.