Quote from: marcus_of_augustus on Today at 03:43:16 AM

Quote from: Richy_T on Today at 02:30:55 AM

The important thing to remember for heat pumps is they don't work well if the outside temperature drops below about 40F (about 4C). I have a dual gas/heat pump system which gives pretty good results.

... they also rely on electricity supply, about ~25% of the heat shifted is consumed in electricity for the best efficiency pumps.

... if it is mission critical to keep the heat flowing probably plan on back-up generation in case of main/grid electrical failure

I have woods an axe and a wood stove in the addition so I pretty much have all the bases covered with my generator in the shed that will power the house with a switch. I like to have my vases covered. I also have a small windmill for the last 10 years that I've been to lazy to install.

I still haven't picked up any solar for some illogical reason.
overlapping systems for the win, maybe texas should learn this same lesson.