Global Water Heater Market Size, Share, Demand Report By Product Type (Storage Water Heaters, Tankless/Instant Water Heaters, Hybrid Water Heaters, Solar Water Heaters, Heat Pump Water Heaters), By Capacity (Below 30 Liters, 30–100 Liters, 100–250 Liters, Above 250 Liters), By Fuel Type (Electric, Gas, Solar, Hybrid), By End Use (Residential, Commercial, Industrial), By Distribution Channel (Online Retail, Specialty Stores, Plumbing & HVAC Wholesalers, Direct Sales), By Region & Segment Forecasts, 2025–2030