You get a deduction for the contribution, the gains grow tax-free and as long as you use the proceeds for health-related expenses the funds come out tax free as well. 

With the right tax strategy, you can maximize deductions and reduce liabilities, while having the right insurance and reserves in place will protect you from unexpected costs.By Implementing a quarterly financial review to assess performance and make adjustments to avoid cash shortfalls.

This is to get your tax deduction at a higher tax rate.  

Hope all that makes sense. 2) LLC-B contributes $5875 towards retirement --> tax deduction what type of contribution is this?

The interest being deductible is based on the use.

Consult a tax professional to optimize deductions and explore strategies like Real Estate Professional Status or short-term rental loopholes to apply depreciation to non-passive income.This post does not create a CPA-Client relationship.

Quote from @Eduardo Perez-Borroto: Since the HELOC was not used on improving the home you cannot deduct the interest, nor use that to offset your capital gain.Would adding a battery bank system to my solar panels count as home improvement? 

Quote from @Polat Caglayan: 1500 sq ft and a mid-level renovation that complies with section 8 standards I would get a contractor out there 

These tax deductions do not require you to become a real estate professional.

It is in your inbox Heath, Granted this is a standardized PA form,  it gives you a good idea on how to draft one.