All My Favorite Tools: Brass Wire Brush: Dave from @diyhvacguywill walk us through his 4 steps included in a common yearly furnace tune-up. If you take this on as a DIY project you could save yourself $75 -$125. Dave's Channel (The DIY HVAC GUY): Free Home Maintenance Checklist: Merch Shop: DISCLAIMER: This video and description contain affiliate links, which means that if you click on one of the product links, I’ll receive a small commission.