-I've only owned the place for a month so I don't know HVAC history...intake filters were pathetically dirty-The place is currently occupied by tenants, their 13 year old son occupies the bedroom upstairs-it's April in north Alabama, not terribly hot but it is upstairs and temperatures are beginning to rise.

An alternative proposed by a recent HVAC company was $1100 to flush the system, bleed the radiators, and leave the existing boiler in place, but install an ecobee wifi thermostat where I can set the max allowable temperature remotely.

I had a tenant that said he would set the temperature and it was not cooling later.

The only time its not a good season is if the temperature is below zero or there's a blizzard / Noreaster.

Its in the middle of winter too with freezing temperatures everyday. 

So do you control the temperature in your tenant’s apartment?

Very low temperatures compared to Bend ect ect..Should they just settle and get a property in La Pine because they can find something great for under their $300k price range or do you think they should hold out and try and find something closer to Bend and not in La Pine?

Ok so your electric bill comparison from last year should help with whether the cost is temperature.

Maybe add a yurt or 2 in the nicer temperature months and....voila.....less grass to cut and more money coming in

It was totally below grade and the temperatures there were 10-20 degrees different from the floor above.