Our last 5er had two 1,500W Dimplex fireplaces, with no fans. I never liked them. Then when Dimplex issued a recall because of a fire hazard with the remote built into the power cord, I quit using them and bought 2 small floor 1,500W heaters with fans.
They did a much better job of heating our 40' 5er than the fireplaces ever did.
It was easy to remove them, then have the Amish cabinet makers craft doors for new storage spaces.
BTW, Amish cabinet makers do excellent craftsmanship and are cheaper than stuff from big box stores. I took them the measurements, they declined to use them and asked what day they could come and measure the openings.
I installed them and the finished look was better than the installed cabinets.