Do I have to file both of my W-2s? I have 2 W-2s from separate employers. My refund drastically reduces when I enter both in, can I file just one and get a higher return?

I'm assuming my refund goes down when I enter both in because my income passes an earnings bracket. Both W-2s indicate I will get a refund so I don't owe anything. Will anything happen if I only file one of them?