I would check and make sure ashes aren't building up. keep them cleaned out often.
Quote Originally Posted by minehart gap View Post
I’m not sure why but anytime that I run my evaporator for more than 5 hours I greatly loose efficiency. For the first 4 - 5 hours, it is evaporating about 32 to 34 gal per hour then over the next 2 hours it goes down to Around 22 gallon per hour then if I go longer it drops to handy 16 gallon per hour. This is usually happening as the temperature outside drops so the sap gets colder and I don’t have a pre-heater and I noticed that after around 5 hours my door frame is starting to turn red from heat and it doesn’t close as tight. Anyone have any suggestions