Came out here for a furnace tuneup upon arrival tested static static was passing no carbon monoxide within the ductwork, as well as my combustion analyzer showed me no concerns within the unit clean flame sensor filter had been replaced a day before by customer so it was still clean. Checked all amperage within the unit to make sure that it was working fine. The only concern we came across today was the blower wheel being extremely dirty customer was made aware and was going to think about getting it cleaned. Thank you for choosing LBA