Hi, Tiffany,
Your boa is probably really stressed from the move into a new home situation. He doesn't feel at all secure because nothing smells familiar, so he's being very defensive. If you have dogs or cats, they can exacerbate the stress, but keep in mind that you are Godzilla to him, so he's nervous.
In general, it's best not to handle a new snake for the first week to give them time to adjust to the new smells and new setting. After that, begin handling gently and slowly to help him adjust.
For example, you might simply put your hand in the tank so he can smell you, then remove it. You might do that two or three times a day for a week, then move to touching the middle of his body without picking him up at the same pace. Gradually increasing the length of time you are touching him should help, then progress to lifting him just a little.
Basically, you just want to condition him first to your smell, then to your touch, then to you lifting him and holding him as he becomes accustomed to you and recognizes you for a source of food rather than as something that might want to eat him.
BTW, I personally haven't found boas all that pissy, but I do have a Honduran Milk Snake that is darned pissy!! It's made it very interesting trying to bag him to go to the safe room during tornadoes!
Good luck!
Sandy, aka Chu'Wuti, the Snake Woman
(I currently have a dozen snakes and do herp rescues mostly of snakes)