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  ProllyInfamous
  For anybody in TVA's electricity networks (mostly: Tennessee): they offer an annual promotion to single-family homeowners only to purchase an $1800 AO heatpump waterheater for only $250.Maths: 85% discount on fancy new waterheater, which also dehumidifies and cools your house (passive result of heatpump).TVA usually offers this promotion between Thanksgiving and NYE. You can order online from HomeDepot, or walk into a local store [0]. This ends up costing LESS than a new traditional resistive-type heater.[0] either method: they DO verify SFH (by more than just ZIP code) -- duplexes and contractors not authorized/allowed----My own $250.00 "TVA homeowner special" (as a licensed electrician):<https://i.imgur.com/4wCez9u.jpeg> this specific design draws from both bath and bedroom [dual 6" inlets], exhausts into kitchen [single 8" outlet] | utility closet is only 5ft x 4ft (~20sqft)Don't forget to use a pressure regulator, expansion tank (coldside, only), & (preferably) a sediment filter. Whatever you do: do NOT use a water softener before the tank.
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  jakozaur
  A heat pump could win as the best HVAC technology, though a better drilling for ground-sourced ones. Just a shallow drilling (up to 100m) that works in retrofit mode, such as drilling from the basement, would be a great upgrade:- No outdoor unit that looks awful in many settings- works well, even in the coldest winter, without a spike in electricity usage, COP 5- very reliable with long durability- super quiet, no ambient noise- 20% more efficientCurrently, drilling is very disruptive in retrofits, but there is progress in compact techniques that might change the equation.Disclaimer: angel investor in https://www.flexdrill.at/
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  ejoebstl
  In DACH, there's not really an alternative for many homes. Heat pumps are by now cheaper, more efficient, more versatile and definitely greener than other means of heating.If you get one, just make sure to get the dimensioning right. They are WAY more complex to plan, install and maintain than traditional heating.
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  ericd
  As a PSA, mini splits are pretty easy to self-install, and it can save you a bundle, even when buying all the equipment new. Lots of youtube videos on how to do it, though I'd add that most of them show using a manifold with analog gauges to do a vacuum test. You should really get a digital micron gauge and pull a deep vacuum.
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  ndr42
  > [it] become[s] cheaper than gas heating within 11 to 14 yearsThis a no-brainer for buildings with high energy use. But we looked into getting a heat pump last year but it doesn't pan out because our house (15 years old) has a very low energy use and we would not recover the costs (about 20K euros after subsidies) for 20+ years.
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  pandora-health
  I run daily comparisons between a gas boiler and a heat pump in the UK. Given that gas is cheaper than electricity, a well-installed and well-controlled gas boiler can still be cheaper to run. Heat pump running costs can drop drastically when combined with solar and battery storage, but that requires a much greater upfront investment.https://x.com/AO7186252340513https://bsky.app/profile/showpiece.bsky.social
• anon
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  cassepipe
  I think there's one big issue for massive electrification and insulation of buildings: renting.As a renter, I have no incentives to invest thousands in my home's betterment because I will have lost those when I am gone. As an owner, I have no incentives to make my apartment/house better because I don't live in it and I don't pay the energy bills.Something has to be done about that if we want to combat climate change. I know in France it is now forbidden to rent again or sale when the renter leaves if the home's energy grade is F or G (A is best) but it is probably loosely enforced/easy to circumvent. And it is too damn slow ! This is for regulation but maybe there are other levers ?As a renter I would basically have to wait for energy prices to skyrocket for it to make economic sense. I hate this situation.
• anon
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  wxw
  That's a neat proxy measurement to track.
• carlosjobim
  A significant proportion of the European population will only ever talk about heat pumps when they are in a social setting which allows for free conversation. And they haven't shut up about it for about 20 years now. It used to bore me to death.
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  seydor
  in the south, a lot of people opt for split Airconditioning instead of heatpumps. Cheaper and much easier to install/maintain
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  ck2
  imagine the President of the US and his "braintrust" accidentally making the world much more green and efficient by forcing a radical reduction in oil dependencywhile they purposely end climate-change research including destroying billions in observation satellites by deorbiting themthe history written about this decade is going to be wild, if we survive it
• anon
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  Marciplan
  [flagged]
• JoelJacobson
  Shame on The Netherlands: ~89% of homes still use natural gas in some way for heating [1], and their government are now "scrapping the obligation to purchase a heat pump in 2026" [2].[1] https://www.cbs.nl/en-gb/news/2025/50/ever-more-gas-free-hom... [2] https://www.abnamro.nl/en/personal/specially-for/preferred-b...