Now that they know that the CURRENT system is expensive to run, they want me to foot the "extra" cost that will be incurred until the new furnace is installed.

Being furnished is also extra work, more things to break and be maintained.

Also, consider short-term rental insurance for extra coverage, especially for bookings outside Airbnb.

I pass on extra money to them.

. - For the right people (landlord who wants hands-free ownership but achieve higher than normal LTR rate, and arbitrager who has the skills and extra bandwidth, AND has confidence in their own ability), I think this kind of arbitrage model is a win-win.I'll be operating in the Triangle area. 

I'm currently exploring opportunities in the Honolulu market and looking to use my VA renovation loan to purchase a 3-4 bedroom home, renovate it, and rent out the extra rooms as part of a co-living/house-hacking strategy.

In most cases, cash flow is already tight, and adding debt could put extra strain on your returns.

A little extra screening now can save you from a major issue later.

You will need to withdraw the excess above the legal maximum (plus earnings) in both scenarios.Withdraw the Excess – You can withdraw the extra $8,400 plus any earnings before the tax deadline to avoid the 6% excess contribution penalty.

How much extra security deposit and rent increase is appropriate?