The Canon IGWH 20DD is the better choice if its higher rated output supports greater hot-water demand, while the IGWH 17DD may suit smaller households. Compare burner capacity, gas consumption, and water-flow requirements to assess performance and efficiency. Check both models and shop today for the latest gas water geyser price in lahore at Electro zone pk. https://electrozonepk.com/collections/instant-gas-water-geysers