Thanks, today I learned about New Historians.

Automatic upvote aside, the video is absolutely worth watching.

It’s true they’re at worst 100% efficient, but they’re also typically sized lower than resistive electric heaters in terms of input power. In the US, a residential heat pump likely draws about 4kW, whereas resistive heat strips or baseboard heating could be multiples of that. As an air source heat pump’s output drops on very cold days, a unit rated for e.g. 48000BTU/hr at 47°f might produce only half of that at 5°f/-15c. A “good” unit here would produce perhaps 75%. The way we do HVAC sizing, unless you radically oversized the system for most weather (including air conditioning) you’ll need a backup source of heat on the coldest days.

Code (law specifying how much heating / cooling capacity is required in normal worst-case weather conditions) where I live would require me to use about 2x the normal sizing to achieve pure heat pump heating at the required design temperature (around 5f/-15c). That means at the peak of summer (about 100f/38c) the unit would be operating at less than half of its full cooling capacity.

Apologies for weird units; I live in MAGAland.

I actually really enjoyed replaying it recently after many many years. Other than the dialog, what bugs you about it?

By the way, the engine replacement is really good.

There are metal-detectable filaments you can use, which may help (although I’m not sure if they’re food safe; presumably the suppliers will respond to business inquiries though!)

For a business, Prusa probably makes sense. You lose money when things don’t turn out right, so spending a bit more up front is the right choice.

Beware that FDM prints are full of tiny holes which are basically impossible to thoroughly clean, so they can be “food safe” for the first use, but once they’re used they may be dirty forever.

Some do; others think it’s a valid argument because they see their media sources (or at least people around them) do it.

I did, and multiple friends are either actively working on doing the same or have expressed interest but have constraints (e.g. an autistic child who found a school / therapist they like, or non-ASD kids in hard age ranges to move).

Contributing to a pro-birth, anti-democracy, anti-reasonable-gun-control, transphobic economy in a hot humid climate that’s getting worse made no sense.

Texas literally banned ensuring workers get 10 minute water breaks every four hours. They banned cities voting to protect their own trees. Local democracies try to make things better and Texas says no. All the while, Texas refuses to employ a fair taxation strategy for less-urban areas, so blue cities have to fund the red counties’ school districts. Anybody not actively fighting to improve the political situation there should leave.

I haven’t missed the weather at all.

You’re underwater on a mortgage - this may not be catastrophic if you have a COVID interest rate and the place is rentable. Is that an option?