I ordered and payed for this furnace on jan. 7/20. but due to manufacturing delay I did not receive it until march 2020. it was not installed until December 2020. am very pleased with performance so far. I have a question about the operation of the 4 spee

I ordered and payed for this furnace on jan. 7/20. but due to manufacturing delay I did not receive it until march 2020. it was not installed until December 2020. am very pleased with performance so far. I have a question about the operation of the 4 speed fan that I will forward to your dealer - wilkins home building center in Fredericton.