Pro- Size is the online water heater sizing software from A. O. Smith, who have built a global reputation for water heating innovation and efficiency. To select the right State water heater for your home, try our Xpert product selector For Commercial Sizing applications, we have developed StateSize, a robust. Sizing is the technique that matches the capacity of the hot - water source to the needs of the homeowners. Commissioning Request a commissioning. Buying Too Large Wastes Money The result is that many people end up buying a larger system than they actually need. Incoming water temperature is a critical consideration, which varies by region and season. A larger capacity water heater should be considered. Funding Energy Companies Obligation ECO Renewable Heat Incentive RHI. Find your Family Size and Peak Demand Output Requirement in the chart above. How we can support your project. Recovery time is not an issue with continuous flow units, so even a large family with guests would not run out of hot water. If you also assume an 8 minute shower, you will consume about 56 litres of hot water per shower or a family of four would consume litres. Products Literature Customer support Size-It BIM library CAD library Information and advice News About Contact. Water Heating All Gas Water Heaters All Electric Water Heaters Tank-type Water Heaters Hybrid Electric Gas Tank-type Electric Tank-type Marathon Electric Tankless Water Wta finals 2017 Condensing Tankless Mid-Efficiency Electric Tankless Point-of-use Water Heaters Solar Water Heaters Water Heater Booster. This does assume that you are not using other hot water devices simultaneously. Services Customer Support Genuine Parts Contact an ASM Technical support. How many gallons are needed to fill each to capacity? While tankless water heaters do not run out of hot water, if not sized correctly, the flow rate of that water can be adversely impacted. Marketing Literature Brochures Case Studies Catalogs Energy Guides Warranty Sheets. How To Select and Install Tankless. The number of people paul von spaun your home combined with how and when they use hot water is the key. Smith Languages Choose Your Country Algeria Belgium Canada China Czech Republic Far East France Germany Hungary India Italy Morocco Netherlands Poland Portugal Spain Tunisia Turkey United Kingdom Other International Markets. For those who live in cold weather areas How many bathtubs and whirlpools are in the house? How many gallons are needed to fill each to capacity? Compare water tank capacity or continuous flow rate to peak usage rate. Gas Boosted Solar Hot Water Systems Prices. So, some of the electric savings is offset by the fact that you need to heat a larger tank. For those who live in cold weather areas Servicing and maintenance Approved Service Agents. Tankless units will have lower flow rates with colder water. If you live in a cold climate, you should read the following special section! How Long Do 45kg Gas Bottles Last. For a tankless continuous flow unit, it would depend on how many showers are being used simultaneously. In the above example, if all four people take their showers in the morning, you would only need a storage hot water system with litre first hour capacity, regardless of how many take showers at exactly the same time.