central Air

[trickyrick]

I was thinking about installing a 2 ton air conditioner and have a question. The air plenum on my furnace is a lot bigger then the size of the A coil that comes with a 2 ton unit. Is there any problem with say using an A coil that was went for a 3 ton unit or even larger. It just does not make sense to me to restrict the air flow. Any comments
Thanks
Rick

[NHMaster3015]

I was thinking about installing a 2 ton air conditioner and have a question. The air plenum on my furnace is a lot bigger then the size of the A coil that comes with a 2 ton unit. Is there any problem with say using an A coil that was went for a 3 ton unit or even larger. It just does not make sense to me to restrict the air flow. Any comments
Thanks
Rick
This gets a bit tricky here. You need to know, or fin out the air flow (cfm's) that the furnace fan is delivering to the plenum. Size alone does not mean much. You also need to know the cfm rating of the ton coil.

[trickyrick]

Is the CFM'S marked somewhere on the fan or on the furnace somewhere. When looking at the A coil I assume that it also must be somewhere in the spec's
Thanks
Rick

[Ruudacguy]

A few manufacturers have wide smaller tonnage coils. What brand are you looking at, and what brand/width/btu rating is your furnace?