I noticed that Mitsubishi advertises that their minisplits put out more rated BTU on heat than on A/C, and advertises a min-max range that puts max BTU much higher than 'rated BTU'.
I also notice that they are advertising very good output down to 5°F.
Their 'Hyper Heating' models are quite extreme in this.
For example, at this link they show the 9,000 BTU MSZ-FE09A (page 7) as being rated for 10,900 BTU heating, with a maximum output of 18,000 BTU at 47°F. Maximum output is listed as 12,500 at 17°F and 10,900 at 5°F, so even at 5° it's stronger than 3/4 ton.
My question is, do all inverter drive minisplits act this way?
Other makers don't seem to advertise the heat output numbers other than at 47°F, but Fujitsu does advertise a minimum-maximum range which goes a lot higher than 'rated' output (page 12 shows the "9,000 BTU" 9RLS2 heating up to 22,000 BTU).
For example, should I expect the higher efficiency LG units to put out nearly twice their rated output at 47° and hold rated output at single digit temps, or is it just the Fuji/Mitsu stuff that's made to heat like this?
Why don't the minisplit makers put out heating/cooling charts showing the output and efficiency every 5° like I see for most conventional units? I get the idea that the numbers would be impressive for most of the inverter drive minis.