Should i refinance my mortgages?

[Gabriel Benavidez]

I currently have 4 single family homes and I am thinking if I should refinance to get a better interest rate.

First property 5.4% loan $114,000

Second property 5.5% loan $115,00

third Property 5.4% loan $85,00

Fourth property 5.6% $116,000

My plan is to keep my rentals long term and do not plan on paying them off anytime soon and they are currently cash flowing about $275 after expenses are paid. Should I start refinancing? Any tips and advice will be appreciated. thank you :)