Let me rephrase: Tankless gas water heaters (90-97% efficient) aren't anywhere near as efficient as more modern alternatives, specifically heat pump water heat

Let me rephrase: Tankless gas water heaters (90-97% efficient) aren't anywhere near as efficient as more modern alternatives, specifically heat pump water heaters, which are 300-400% efficient. They are are marginally more efficient than condensing storage gas water heaters, which are 89% efficient. Given the gulf in efficiency between tankless gas and heat pump water heaters, tankless gas shouldn't really be promoted as examples of high efficiency. https://www.energystar.gov/productfinder/product/certified-water-heaters/?formId=8423992-4636-4-89-377412206&scrollTo=141&search_text=&type_filter=&fuel_filter=&brand_name_isopen=0&input_rate_thousand_btu_per_hour_isopen=0&markets_filter=United+States&zip_code_filter=&product_types=Select+a+Product+Category&sort_by=brand_name&sort_direction=desc&currentZipCode=94604&page_number=0&lastpage=0 https://www.energystar.gov/productfinder/product/certified-w...