There are air leaks. Houses with holes are harder to cool. Issuing insulation. The attic is the first place to check. Is this true? Put out the insulation. The sun shouldn't be out. Get more efficient appliances. If you want to move appliances, move them to other areas. Is this true? You should check your dryer vent. Is this true? dirty filters should be replaced.
Let's Get It Fixed!
HomeX virtual experts will assess your issue (for free!) and can resolve simple problems.