Seems quite compelling—most previous claims of high temp superconductivity have been based on seeing only dips in resistance curves—not full array of superconducting behaviours recounted here, and sample preparation instructions are very straight forward—if it works we should see replication in a few days to weeks [that alone suggests its not a deliberate scam].
The critical field strength stated is quite low—only about 25% of what is seen in a Neodymium magnet and it’s unclear what critical current density is, but if field reported is as good as it gets then it is unlikely to have much benefit for motor design with B² dependent torque densities <10% of conventional designs, unless the applications are not mass/cost sensitive (wind turbines replacing permanent magnets?).
Meissner effect could be useful for some levitation designs (floating houses, hyperloop, toys?) Likely some novel space applications like magnetic sails, perhaps passive magnetic bearings for infinite life reaction control wheels and maybe some ion propulsion applications. But lightly biggest impacts will be in digital and power electronics with ultra-high q inductors, higher efficiency transformers, and maybe data processing devices.
It might be transformative for long distance renewable power distribution.
[Edit to add link to video of meissner effect being demonstrated]
Meissner effect video looks like the real deal. Imperfect disk sample is pushed around surface of a permanent magnet and tilts over to align with local field vector as gets closer to edge of cylindrical magnet end face. Permanent magnets in repulsive alignment are not stable in such arrangements (Earnshaw’s theorem) - they would just flip over, and diamagnetism in conventional materials—graphite the strongest—is too weak to do what is shown. The tilting shows the hall-marks of flux pinning working to maintain a consistent orientation of the superconductor with ambient magnetic field, which is a unique feature of superconductivity. No evidence of cooling in video.
If this is not being deliberately faked then I’d say this is a real breakthrough.
[disclaimer: I am a heat pump technology developer, however the following is just low-effort notes and mental calcs of low reliability, they may be of interest to some. YMMV]
It may be better to invest in improved insulation.
As rough rule of thumb COP is = eff * Theat/(Theat-Tcold), with Temperatures measured in absolute degrees (Kelvin or Rankine), eff for most domestic heat pumps is in range 0.35 to 0.45, high quality european units are often best for COP due to long history of higher power costs—but they are very expensive, frequently $10-20k
Looking at the COP for the unit you quoted the eff is only about 0.25 at rated conditions, not good, unless you get a much larger unit and run it at a less powerful more efficient load point.
That’s a pretty huge electricity price, about 4.5x gas price (which is distorted-market nuts, 3x is more usual globally). Given that differential it might be better to look at an absorption heat pump like https://www.robur.com/products/k18-simplygas-heat-pump that gives up to 1.7x gas heat—though they look to be on the order of $10k.
Here’s an annoying fact; If you ran that $2/therm gas (~$0.07/kWh) through a reasonably efficient (~40%) natural gas genset it would produce electricity cheaper than what you currently pay for power, and you would have 2/3rds of the gas energy left over as heat. A genset in your neighbourhood could provide a few 10′s of houses with cheaper electricity and low cost waste heat, though no doubt prevented by regulatory issues. There are a few small combined heat and power (CHP) domestic units on the market, but they tend to be very expensive, more tech-curios than economically sensible.