Smart thermostats are fairly ubiquitous these days, but depending on which one you’re using, you could be getting a lot more from your home heating and cooling — with relatively simple DIY upgrades.

When your home’s heating and cooling system allows you to set just one temperature for every room in the house, it can be hard to find a setting that everyone in the household will agree on.

Hoping to outdo Keen Home at localized temperature control, tech startup Flair will bring a more flexible and more budget-friendly option to the smart air conditioning field. Flair's $40 Smart Vent ...