[modriano]

What efficiency (in terms of energy transfer to the intended material vs to the environment) is observed with gas? IIRC, gas achieves maybe 35-50% efficiency (depending on the surface area and material of the pan) compared with ~80% for electric resistance heating and >90% for induction.

Adam Ragusea did a water boiling comparison and the gas stove was dumping so much energy into the air around the pot that his thermometer melted [0]. I just don't see how any pan geometry could extract much of the energy from the quickly rising hot gas produced by combustion.

[0] https://youtu.be/Xn1LUo5ra_A?t=249

[stephen_g]

The claim on the site is that the heat exchanger base boosts efficiency up to 60%.

You still of course do have the problem that home rangehoods usually aren't powerful enough to create enough air-flow to properly deal with the NOx and SOx produced by burning gas, which turns out to be a big health risk...

[amluto]

Most home range hoods are too powerful. Go to any site that calculates commercial range hood requirements, enter in your parameters, and then try to find a nice range hood that matches. Those 700 cfm or 1000 cfm beasts the appliance stores sell are entirely inappropriate.

There may well be a problem with a poorly designed range hood and exhaust that inevitably isn’t captured. And people might not like using the hoods all the time.

[heisenbit]

Comparing gas with electrical efficiency is not representing realistic end-to-end efficiencies wrt. co2 as long as the vas majority of electricity is generated from primary energy. Power plants tend to have efficiencies lower 50%.

[zwirbl]

The gas end-to-end "efficiency" will not improve drastically ever, while for an electrical stove it is tied to energy production. Arguing with end-to-end efficiencies and power plants is misleading, as I can power my induction stove from my solar panels

[Firmwarrior]

That's true, but I power mine from the municipal grid that burns stuff to make steam and then electricity

[ajnin]

Might still be better as efficiency goes up with temperature and industrial generators can achieve much higher temperatures that what you can at home, and also include some clean sources of energy into the mix.