Another vote for NO on the vent free heater. There are many options for direct vented units and as mentioned some will continue to provide heat without power. Locate a local store where you can ask questions and see what is available.
I use a glass front wood stove connected to a masonry chimney as my backup. Today that chimney would cost more than the stove. But gas with direct venting should be reasonable.
Bud
I use a glass front wood stove connected to a masonry chimney as my backup. Today that chimney would cost more than the stove. But gas with direct venting should be reasonable.
Bud