Time For An Upgrade Post author:Chad Post published:October 18, 2021 Post category:Furnaces Post comments:0 Comments This old Olsen furnace is on his way out! We found that this return air duct reduces in size which is not good for airflow. New properly sized return air duct. Brand New Lennox ML196-70 furnace! Related You Might Also Like Out With The Old. December 8, 2021 Double Change Out October 7, 2021 Safety Concern October 6, 2021 Leave a Reply Cancel replyCommentEnter your name or username to comment Enter your email address to comment Enter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.