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If one runs a small business, one has to pay Google/Meta; otherwise, their businesses will be bottom of the search. It is a tax now.

When one becomes too comfortable with one vendor way of doing things, you end up paying 10's of millions of dollars in the end. Move the work loads to KVM, and invest in your own employees, and you can migrate off of VMware easily.

So, this is not about OPT, but CPT. Many from various schools have abused CPT; so, they want to put to close that loophole. Some real ones get affected by this because of others' actions.


If 'it' is unnameable, there is no way to circumscribe or even describe what 'it' is. Even to show that what it refers to is an empty set, we need its description. If we use concepts like intention and extension, we can sketch out four scenarios:

extension, no intension (yes, we can point out things, which we can't describe)

extension, intension (we point out, and we describe)

no extension, intension (Yes, we can imagine and describe things vividly, but no referent in the world. Here, one can say these things exist in a Platonic world, but not the world we live in; this is where numbers, sets, ideas can exist. Neo-Platonism in Philosophy of Mathematics)

no extension, no intension (this paradox falls in this area).


They just buy slogans from those who espouse efficiency.

In a traditional AC unit, heat is produced by either electric strips or by a gas burner, no refrigeration circuit is involved in the heating cycle. So, just a blower motor runs, compressor (and condenser fan) never runs in the heating cycle.

In heat pumps, refrigeration circuit does both heating and cooling. So, compressor works in both cycles.


How is that not just better since the power requirements are less? The whole point against conventional ACs and for what we call heat pumps is purely that they use less electricities (well, they can also heat and cool, so you don’t need two systems). People like heat pumps simply because they are more energy efficient. It isn’t guerrilla marketing making people like a new thing that is the same as the old thing.


Heat pump = conventional AC - (heat strip/gas burner) + reversing the refrigeration circuit for the heat cycle + efficient ECM motor (for air blower) + VFD compressor (single phase to DC to three phase AC with variable frequency) + modern controls to manage both inside and outside motors.

One can install an efficient AC unit with electric strips (gas burner) with "efficient ECM motor (for air blower) + VFD compressor (single phase to DC to three phase AC with variable frequency) + modern controls to manage both inside and outside motors." That's where modern AC units are driving at.

Heat pump uses electricity for compressor fan and fan in that outdoor unit. In an efficient conventional AC unit, one trades the extra electricity used in the outside unit for the electricity used for heat strips.

Geothermal heat pump is efficient and is a different ball game.


I won't say "less power consumption". Definitely, not more consumption if efficient controls and motors are used (ECM motors for air handlers, VFD compressors).

The real problem is the repair costs of these advanced units in the developed countries. Carrier wanted $8k for a new control board for a residential unit in the US. Same thing for ECM/VFD.


There is nothing “advanced” about this. It is just cooling the air below the dew point.

Same water tray and a hose for water condensate.


"advanced" is about motors (blower motor and compressor) and their controls. The context is repairs: https://www.youtube.com/watch?v=iqzEIPEky1s


Fencing AC units is a very bad idea, as they just cause air flow problems. After all, air and refrigerant circuit exchange heat.


Obviously, people thought about this, and there are lots of fence designs that admit plenty of airflow and lots of products ready-made for this already.


Service technicians hate fences unless they are easy to remove during a service call. Honestly, esthetics is not as much concerning as the noise from compressor and condenser fan. I stayed in an AirBnb, where the outdoor unit next to the bed room, and I couldn't sleep.


Ok, you're clearly trolling it this point. Fences can open.


Money can mask merit, effort, and capability. However, merit/effort/capabilities alone don't get one to the super elite class.


If they want to drive electric cars, they need a panel upgrade too. Just combine everything in one go.


Which system did you install? Who installed? DIY or a contractor?


DIY, Midea 18k BTU, Hyper -22°F, 23.5 SEER2, 15.5 HSPF. Its air exchanger outside is a good bit bigger than other 18ks, I suspect that's part of how they hit the amazing efficiency at low temps.


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