Helio is the homework. You leave with a system size, a production sketch, and a cost range so a sales visit is not the first time you have seen the numbers. That is a ballpark.
An installer quote is after a site survey: roof, electrical panel, setbacks, utility paperwork, and the equipment they will actually hang. Those details can raise or lower the number. That is the bid.
When you want a human, start with a Helio Verified company. That badge means they passed a rigorous quality check from our team. They are the only installers you can contact through this site — and only after a full design with real information.