Looking for advice on whether to refi or not me combine two loans when/if I do

I would definitely consider a refi. If you are able to pay two notes, then you could likely combine it all into a 15 year at a lower interest rate. Fees shouldn’t be bad. Email me at my username at yahoo.com and I could show you some numbers. I work for a title company and we have been doing tons of refis lately with the rates being lower.

You need to get a fundamental understanding of how much you are paying in interest on each of these loans and compare it with what a refinanced single mortgage will costin interest and fees. You seem earnest but mystified, so I offer a few steps:
—search online for an amortization calculator. You will need to enter the parameters of your existing loans (separately, so do it twice): original amount of loan, start date, interest rate. Print out the full amortization schedule: this is the listing of all payments, showing how much of each payment goes to interest and to principle, with totals for the life of the loan. Thus, you can see in black and white how much it costs to keep both loans for the entire repayment period.
—that same calculator will allow you to “add” payments, either on a regular monthly basis, as an annual lump sum, or as a single time payment, and recalculate the amortization schedule. Again, print it out.
—look at today’s mortgage rates for 30, 20, and 15 year loans. Do three new loan caulculations (using that handy online loan amortization calculator you used previously) with the 15, 20, and 30 year repayment lengths, for the amount of your two existing loans added together. Add a few thousand in to cover refi costs.

Now look at all of those results: you should be able to see whether it is cheaper to keep your existing loans and make additional payments, whether a refinance will save you money (it almost certainly will), and whether the 15 or 20 year repayment schedule/monthly payment better fits your budget.

You can figure this out......don’t rely on others to tell you things about your money. Learn to use basic math to make a comparison and a decision.