What we did
Two systems mean two sets of filters, and this Lexington home has one heating and cooling system upstairs and another downstairs. Our February 2026 visit was focused on replacing the air filters for both.
Upstairs, we installed a new 20 x 20 x 1 filter. The downstairs system took a different size, so we put in a 14 x 20 x 1 filter there. Keeping track of which system takes which size is part of doing this kind of maintenance right, since a filter that does not fit properly can let air slip around the edges instead of through the media.
Homes with separate upstairs and downstairs systems are common around Lexington, and each unit has its own workload. The upper floor often carries more heat in summer, while the lower level may run more in winter. Both systems still depend on clean filters to move air efficiently and keep dust out of the blower and coil. Regular filter changes are one of the easiest ways to help a system keep providing comfort throughout the home. If your house has more than one system and you are not sure what sizes they take, we can sort that out on a maintenance visit.
