Since the heating was outdated I asked to get forced air AC + Heating with duct installed (This sounded unachievable to me as well)To my surprise my agent argued with me saying that they would not accept any conditions and did not put an offer in the end.Am I being unreasonable or should I change my realtor?

However, you can’t unreasonably deny a tenant’s written request to replace or add a new roommate — especially if the new person passes a standard screening (credit, income, background, etc.).

This may not be unreasonable for a real estate investor to do but since he lives in Hawaii with the highest long term property value appreciation in the western hemisphere, just something to think about? 

We have Ecobee but I haven't tested the range lock yet as apart from 2 guests, nothing unreasonable and we were able to resolve amicably by reaching out to those 2 different guest groups and explaining/educating why their choices resulted in turning off the furnace (in winter with single and sub-zero temps).

It sounds a bit unreasonable, especially since they didn't give you a chance to rectify the situation.I will say that A/C does more than cool the room but also helps remove the moisture in the house.

You can limit due to septic/well capacity but it cannot be unreasonable.

I plugged it into our internal software, its not calibrated for your market so its not as accurate, but...It gave me the following comps: 1. 141 Pine St - $65002. 1 Rocky Brook Rd - $53003. 298 North St - $72004. 4 Edson Rd - $79005. 81 Tisdale Dr - $5200Looks like $7200 running some quick and dirty numbers, but $7500 is not unreasonable. 

I can’t afford to really repaint the exterior of house right now, but it also seems that it’s an unreasonable demand on the part of our HOA.any insight or thoughts would be helpful.  

Even if a coop is amendable to subletting now, the board of directors for the building will change every few years and can become unreasonable about it.

If you want to understand them, you’ll need to pay a lawyer, and it’s not unreasonable to expect costs around $2,000.