Heating Appliances Market Size, Share & COVID-19 Impact Analysis, By Fuel Type (Natural Gas, LPG, and Butane/Propane), By End-user (Residential (Space Heating Appliances, Cooking Appliances, Clothes Drying, and Gas Water Heaters) and Commercial (Space Heating Appliances, Water Heaters, and Cooking Appliances)), and Regional Forecasts, 2026-2034