I had my Regency I2450 installed 6/8/22 had my first burn Oct 22, 6 months burning wood stove will not burn pass 5hrs I could never get it to burn 9 to 10 hrs. as they said it would. I had my I2450 woodstove cleaned 4/19/23 By Ash Chimneys they had to replace 3 fire bricks that crumble in their hands the fire bricks are trash. I am a retired Dept Fire Chief and I have never seen this before in my 33 years of service. So buyer beware Regency is selling trash fire bricks Not under warranty they said that is normal ware. I had a timber line woodstove that was 30years old no problem with the fire bricks, wish i kept them when they replaced the stove.