That’s where tado comes in. Tado fills a gap in the market where Nest and other whole home thermostat solutions fall short. The tado Smart Thermostat and Smart AC Control products makes these heating and AC systems smarter, turning any smartphone into a geo-aware remote control. Tado ingeniously detects a user’s proximity to their residence and adjusts the temperature accordingly – so it’s comfortable when you get there, but conserves energy by 30-40 percent when you’re away. It also integrates with local weather forecasts and can adapt based on those forecasts to add to the savings and convenience. Users can also adjust the temperature using their phone from any location inside or outside the home. Aside from helping the millions of people who don’t have central air to still have smarter homes,  tado is also really good at raising money. It just announced that it has closed a $23 million round of funding, bringing the company’s total to $57 million in funding overall. The round was led by international investor INVEN CAPITAL, a venture capital arm of the ČEZ GROUP, a multinational energy conglomerate.