Add 2nd subpanel

[Miketom]

My pool is setup with a 40amp subpanel fed from the main panel, both are on the house. I am adding a heat pump to the pool, which will require a 50 amp, 220v feed. I don't want to try and add capacity to the old subpanel, so the question is, is there any reason I can't add a second subpanel next to the original, just to feed the heat pump? Thanks for any feedback.