Recently got the roof replacement done and part of the insurance payment covered removal and replacement of (2) Solar powered attic fans. I am not even sure both are working (1 has been making a horrendous noise- contacted the manufacture and they sent me a pair of replacement motor brushes) and the other I can’t verify. They are from U.S. Sunlight and not sure of the age (can be 20 years old). Anyway I found out it is almost impossible to get access from the attic to replace the brushes.
My home is a 1.5 story house with the upper story being finished attic space (~1200 sq feet) as it is despite updated insulation and HVAC it gets hot up in the living space and much hotter in the unfinished attic (In NC) as expected. Besides the (2) solar vents there is ridge and soffit vents and (2) turtle vents for bathroom exhaust fans.
Was looking for any opinions if these attic fans really did anything or should I pay to have them replaced with something else like turbine vents or? Thanks.