@Avani Patel If it hasn't been created yet, if someone were able to do that at the property level, they'd be a gazillion-aire!

It isn’t just some random, arbitrary number they pull out of thin air.

Is it worth it to put in central heat and air?

Salt air can deteriorate houses and components faster than markets without salt air.The final piece is finding a market with a quality team or teams that I like and trust.  

One option might be to explore adding air purifiers or filters directly into the system to help mitigate odors.

In the past two years we have completed over a dozen flips, We are holding 20 rental units self managed and 2 self managed Air BnBs.

Currently I am working in partnership on a luxury Air Bnb property in the Philippines to familiarize myself in short-term rentals.I live in Cerritos, CA and am looking to invest into a multi-family home to house-hack in Orange County, CA to get started.I will need a residential agent and possibly a contractor.I look forward to learning and hopefully working with you all!

As of now, I'm still up in the air...no major results to justify an overwhelming positive review yet. lol 

The property has forced air furnace in one unit, two boilers heat the other four units. 

I will always look at the air handler and make sure tenants are installing fresh filters (most neglect this item).