Deck Railing in Fairfield, OH

Fairfield (ZIP 45014) went up as tract housing across four decades from the 1960s, and on most of those houses every mechanical item sits on the back wall: the condenser, the gas meter, the dryer vent, a hose bib. A deck goes in among that, and on a good number of them one run of the guard ends up within a few feet of the air conditioning unit.

A condenser works by moving a great deal of air through itself and out. Every manufacturer publishes a clearance it needs on the sides and above, and the reason is straightforward: air that cannot get away comes straight back round into the intake, the unit works harder against its own exhaust and it runs less efficiently on exactly the days you want it working. A guard is a vertical plane standing in that airflow. An open picket or a cable run is close to invisible to it. A solid infill panel, a close decorative screen or a run of glass at the wrong distance is a wall in front of a fan.

So the run nearest the unit gets its infill chosen for that and everything else follows normally. It costs nothing, because open infill is not the expensive option, and any solid section you want moves along the deck to where it does something for you. We take the clearance figure off the unit itself at the estimate instead of applying a general rule, since the number varies by model and it is printed on the plate. The rest of the guard is unaffected.