Pro's and Con's for using flat panel heaters for chicken coops or hen houses:
Pro's
Chicken coop flat panel heaters are one of the easiest and economical ways to heat your hen house and if your energy source is from solar power you will find that they use less power than regular space heaters which means your power will last longer so your flat panel heaters will keep your chickens warm longer. There is less chances of your chickens getting overheated with flat panel heaters because if they get too warm they are able to simply move away from the heater. Works well for small coops.
Con'sCord's can get too hot. It is not advisable to use the flat panel heaters constantly. Make sure you turn them off once or twice a day to let them cool down. Another con is that most flat panel heaters are only designed to heat a small area and are not large enough to keep an 8 by 10 room warm.

I use an econo heater mounted on the ceiling in one of our smaller coops (5 ft. by 10 ft. wide by 4ft. tall) and it keeps the chickens warm enough to prevent our chickens from getting frostbite. I also use them on the walls of the large and small coops. I use a solar powered generator to power them so I have zero energy cost.

• Uses less than 1/3 the electricity of conventional space heaters
• Heats 120-Square Feet room
• Safe for children and pets

​On very cold days my chickens huddle by them inside the hen house.
I use a 30 Amp RV extension cord with an adapter when I need to use electricity in the coop.

More About Heating Chicken Coops

Heated waterer's

Industrial heaters for chicken coops

​​Solar powered generators

Heaters for Hen House-Pros & Cons