We purchased a Nest thermostat from a big box store and contacted Simply Smart based on the list of recommended installers on the Nest website. The cost of the installation was $160. Upon arrival, the two installers (salesmen) aggressively promoted that we "purchase" a Nest thermostat through their company, paying only $5 a month, and with that we would get free installation. They were pushy and extremely convincing - we fell for it. Deep in the fine print of the agreement it states that the fee is a rental fee, and at the end of the 60 month term the thermostat can be returned or purchased at "fair market value". Buying out of the contract is upwards of $700, when the thermostat itself retails for $300.
They also tried to up-sell us with a protection plan for our furnace, AC, and a HEPA filter. A few days after installation they called back to again ask if we had decided to get a HEPA filter, and continued to try to make a sales pitch for why we should.
I would not recommend this company to anyone, and am shocked that Nest has this company on their list of suggested installers.