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These are additional bonuses on top of the usual bonus you get from the installations themselves. Take note that each installation can be upgraded in the shop. Upgrading a building will double up its boosts, although they will also cost you more to build. Nonetheless, this will passively benefit your heroes in return.
Additional Info on Installations:
Buildings - are where your heroes live, and where you can manufacture products from the materials you gather. Invited friends and customers will go into random places in your town (buildings/establishments) to buy your products. Try and construct buildings with high recovery power.
Facilities - having facilities such as benches and fountains in your town means that every so often, meaty chunks and gold will appear (spawn). Tap the screen to collect these goodies (unless you have reached the limit of meaty chunks you get to carry). There are also facilities that boost the stats of your heroes and buildings.
Installation Parameters
Installations increase your town’s tech level. Tech is split into: Amenity, Fun, Sales, Electricity, and Nature. Try to increase your technology depending on what you need at any given time.
Recovery Power: the amount of HP a hero recovers in battle
Durability: resistance to foes’ attacks
Attack Power: the amount of damage an installed cannon or turret does to villains.
Charge: the frequency at which an installed cannon or turret fires.