Also if you don't already have a programable thermostat, change that. 

Single thermostat/gas bill.

Get a WiFi deadbolt, thermostat, and camera.

On the two-dial kind, the "freezer" one sets how long the compressor runs (it's the thermostat), and the "fresh-food" one sets how much cold air from the freezer is allowed to leak into the fresh-food compartment (it controls a flap in the ducting). 

Often it has a plastic button on top that you can push to close the contacts, even when the thermostat inside the house is not calling for cool.

Probably fancy upgrades, like smart thermostat and doorbell.

@Rein Garcia My business is run almost exclusively with VA's...support staff is local just because it makes sense as she improves her skill-set and grows with the company into other positions...programmers, coders, mapping solutions, website design, all branding and design work is completed by VA's...

If you have a furnace and air conditioniner in one unit it doesn't matter because the thermostat acts like a switch.

There are alternate options to transfer air to/from bedrooms, but those get somewhat complicated.The cassette fan coils are ugly and take up wall space, You also need a thermostat for each one so you have to plan for labor for that wiring.In my experience the Japanese products (mitsubishi, fujitsu, daikin, etc.) are better technology than the American manufacturers (trane, lenox, etc.).

The rationale for considering the Nest Protect is the ability to be notified on my cell phone when an alarm is triggered, the ability to pinpoint exactly which alarm went off (location and whether it was smoke or CO), the ability for the alarm to turn off the forced air furnace (already has a smart thermostat) when it detects smoke or CO, and the ability to turn off the alarm from my cell phone once I know it's all clear.I don't currently get many nuisance alarm complaints at this tri-plex.