That's fine as long as you're not comparing it to some unattainably perfect fossil fuel based system, and then claiming that the heat pump alternative "needs" b

That's fine as long as you're not comparing it to some unattainably perfect fossil fuel based system, and then claiming that the heat pump alternative "needs" big radiators and or whatever when it's been recommended practice to do the same for gas heaters (new install and replacement) for two decades now.