We have a blower, coil and venting in attic
Our 2 1/2 ton Carrier system is not cooling our two floor, 1900 square foot house in Toronto Ontario below 79 degrees, even if it runs for 5 days continuously. Installer came back and changed two of the 5" ducts to the main floor wtih 8" at a cost of an additional $1000. We have had the filters changed and the unit checked by the installer. So far we have spent $8,000 and have no air conditioning on hot humid days!
We have had conflicting advice from other professionals about venting and insulation and we do not want to continue to spend money with no results.
We have taped all the ducts in the attic with metal tape and insulated the large metal duct with the aluminum fibreglass insulation. Still not getting the house cool.
Another vendor has suggested soffit venting to creat cooler attic so that a/c components are not in such high heat. Will this work? We have an 80 year old house with no vents in the aluminum soffits which cover the old wooden soffits. We do have 4 vents in the roof. It will be very expensive to replace the eavestrough,soffit and facia just to get soffit venting. Will this provide the necessary cooling to the attic? Will this enable the air conditoner to cool the house?