Fall & Spring HVAC Service Target Date: April and October This service can aid in early detection of costly problems and save the cost of expensive, emergency service.A/C Service Includes: Check condenser coil, adjust operating pressures, monitor safety controls and starter capabilities, clean or replace filter, adjust blower components, calibrate thermostat, measure for proper temperature differences, clean condensate drain, tighten electrical connections, measure voltage and amperage on motors, lubricate moving parts.

@Ted Kawabata Take the thermostat cover off and a couple outlet covers in different areas to check for sign behind them.

Air:  Heating and cooling, what type, all rooms covered, thermostat, window units, everything working, if forced air, need servicing of ductwork, etc. age function of unit, type of fuel used. 

Not only do they do damage and make messes, but they make service calls for things like "I can't figure out the thermostat" or "I have too much trash for the trash can this week."

Sometimes the spikes and surges from those can fry things.For "no heat", it could be one side of the 240 V to the dryer missing, a bad heating element, bad regular thermostat, bad high-limit switch, or bad control board.

Did you think to take a picture of the thermostat set to 40 degrees? 

Every 1 degree reduction in the thermostat setting results in about a two to three percent reduction in heating costs.

Also had central air installed this week; we thought about putting this off until spring, but with the mild weather this winter, we feel we got a pretty good deal by installing it now ($2,400 for the C/A unit, install, and new thermostat, and $200 for the electric work).The only major project left is the kitchen perimeter countertop; we’re still debating over laminate vs. granite, but we already have some showings scheduled for next week so we have to make a decision quickly.

Given where you're looking to buy, however, you may have difficulty finding enough comps to determine this confidently.Another simpler option that I know a lot of landlords employ is putting a max setting on the thermostats.

I do not have any pictures of the properties yet but the owner stated that it has fairly new hardwood floors and the only thing that it needs is a new thermostat.