Renovation & UpgradesDirectory of upgrades Home > Energy Assessments, Renovations, and Upgrades > Directory of upgrades Explore the opportunities and technologies to improve the energy-efficiency of your home. Heating & Cooling Air Conditioners (Central)Air Conditioners (Room)BoilersDehumidifiersDrain-Water Heat RecoveryFurnacesHeat Pumps – Air-SourceHeat Pumps – Ductless Mini-SplitHeat Pumps – Ground-SourceHeat Recovery VentilatorsWater Heaters – Storage TankWater Heaters – Tankless Building Envelope Air SealingDoorsInsulation: AtticInsulation: BasementInsulation: WallsWindows Renewable & Smart Technologies Electric Vehicle ChargersEnergy Storage (Batteries)Smart ThermostatsSolar PV PanelsWater Heaters – Solar Other Upgrades Backwater ValveFlood AlarmsRoofs: CoolRoofs: GreenSump PumpsToiletsWindow Well Covers