If tanks are different size or types and are not identical to each other, then connecting in series, or cold into both heaters (as shown above) are best choices. This means a 50 gallon gas and 30 gallon electric, or two different size gas, or 2 different size electric can be plumbed together without problem.
Is it better to have two water heaters or one big one?
If you’ve got that big a house on a slab then we would say yes, it’s a good idea to have two tanks to service individual sides of the house. And it won’t cost a whole lot more to have two smaller tanks rather than one big one.
Why would a house have two water heaters?
Greater efficiency can be achieved by installing multiple, smaller tankless water heaters throughout the home. Hot water is then drawn from nearby tankless appliances instead of being lead through the home’s entire plumbing system from basement to point-of-use.
Is it more efficient to have two water heaters?
Why would you need 2 water heaters?
If you have fixtures or appliances located some distance apart, it may be advisable to install two or more point-of-use on-demand water heaters to avoid unnecessary energy losses and prolonged delivery times.
Why does my house have two water heaters?
They normally have the first unit (the one closest to the cold water supply set lower than the “final” unit. This does pre-heat the water for the second unit. During periods of very high demand (e.g., lots of company in the house), they set them both to the same setting.
What’s the best way to hook up two water heaters?
First, there are two ways to hook up two water heaters: series and parallel. In series, the water comes in to the first water heater, then passes through the second hot water heater, and finally goes to your fixtures.
Can you connect two tankless water heaters together?
Series is where the cold water goes into one water heater then through the second water heater. Parallel is where the cold supply has a tee which feeds each water heater independently and joins them back together to one hot water supply. Do I need one or two tankless water heaters?
Can a water heater be connected in parallel?
Equipment being equal, two or more heaters connected in parallel will deliver more hot water than the same heaters connected in series. In a parallel configuration, the hot water demand is taken equally from each unit.
What happens when you run two series water heaters?
Once that happens its cold water will blend with the other heater’s hot water and temper it. With series EVERY ounce of water has to flow through both heaters so the output temperature remains the same until both heaters have used their hot water.
