Originally Posted by
sumdumgai
Am replacing a 28 year old Carrier (38EB030300) heating and cooling system.
Stills cools and heats but it's time. The Carrier is a 2.5 ton and handles the main floor and downstairs finished (heated and cooled) basement & office.
The mainfloor is around 1200 sf and the downstairs around 500 sf.
Above the mainfloor, upstairs, are the bedrooms, which are handled by another 2.0 ton Carrier system.
The upstairs has never been a problem with heat or cooling. The mainfloor has always been difficult to cool on hot days. Normally, I leave the thermostat at 77-78.
The house is surrounded by trees so there's plenty of shade. Four normal size windows on mainfloor face West and get afternoon sun.
I know there are other factors involved, but from this information,
can someone please offer an opinion as to what size should I go with, 2.5 ton or 3.0 ton?
Thanks.