1 Solar-powered home water heaters cost $1,000-$3,500 (including installation) but have extremely low monthly operating costs and can be used in any climate, according to the US Department of Energy.2  The cost for a solar heating system can vary widely. Prices vary based on building and system configuration, the type of equipment selected and other factors. 2  Generally it costs less to install a system in a new home rather than remodeling an existing one, although it can be practical to install a solar system while replacing the roof.
herb, spice, seasoning - Herbs are, technically, plants with aerial parts used for seasoning foods, and a spice (also called seasoning) is any substance used for seasoning foods; many herbs are used as spices, but not all.
This article is about culinary, medicinal, and spiritual herbs. For the technical usage, see herbaceous plant. For other uses, see Herb (disambiguation). In general use, herbs are any plants used for food, flavoring, medicine, or fragrances for their savory or aromatic properties.