Wednesday, September 18, 2013

House Day 26 - Ben Giddens Was Designing the Heat / AC / Ventiltion System - Roof Sheeting Continued


Ben Giddens - AC Man

While Gary and his crew continued closing in the roof - Ben Giddens was busy deigning the AC system. We have decided on a Trane Heat Pump - with a SEER rating of 18. The air handler will sit in the attic in the northwest corner. Because we left an 18 inch gap between the attic floor and the main floor ceiling - all ducts will be able to pass through that space and be hidden. 

Each room will have several air outlets and air returns. That way a room is fully air conditioned - even when its doors are closed. All the ducts will be in insulated space - not being exposed to intense attic heat. 

The main unit will have a variable speed motor. When the heat or AC goes on - the motors will start up slowly. The speed will vary with the amount of service needed. the system should be virtually silent - very important to someone that is hard of hearing. 

Because the house is going to be insulated with Icynene liquid spray foam in place insulation - a 3 ton AC unit will be adequate for the whole house.

We expect the home to be closed in tomorrow.

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