Browse Forums Bathrooms and Laundry 1 May 17, 2009 9:41 am We want to have double shower heads put into our ensuite, but we're curious as to how it actually works. As it is, when someone turns on a tap while someone is in the shower, the person in the shower gets a cold one. Is there something that regulates the water temperature if there are two people in the shower at once? -S Re: Double shower heads 2May 17, 2009 1:31 pm Do you mean 2 shower heads but 1 tap set? Most double showers I've seen have 1 tap set for each shower head. After 4 years - we're in! Re: Double shower heads 3May 17, 2009 1:55 pm stonecutter1309 Do you mean 2 shower heads but 1 tap set? Most double showers I've seen have 1 tap set for each shower head. I would imagine it would be 1 tap set for each shower head, but what prevents one person from getting a cold shower, as is the case in our current situation when someone else turns on a tap elsewhere in the house? Re: Double shower heads 4May 17, 2009 5:10 pm If someone turning on a tap elsewhere in the house currently gives you a cold shower this will probably continue with the double head shower - whether you have one or both heads on. Re: Double shower heads 5May 17, 2009 6:20 pm ok.. let me try again lol The house we are CURRENTLY living in has the cold shower problem... we would like to avoid the problem when the NEW house is built, and are wondering how to do that. Re: Double shower heads 6May 17, 2009 9:53 pm Could it be due to the water heater in your current house - as in it's not powerful enough to heat enough water for more than one outlet so if a tap is switched on there's no longer enough hot water for both the tap and the shower so the temperature of the water coming out of the shower suddenly drops? So as long as the water heater in your new place is powerful enough for your usage needs this shouldn't happen. Re: Double shower heads 7May 17, 2009 10:34 pm Ahhh - ok! I would say it's your hot water system being unable to send enough hot water to those outlets. What will the HWS be in your new house? Continuous gas? Solar? After 4 years - we're in! Re: Double shower heads 9May 18, 2009 6:17 pm If your having that problem in your existing house, it might be because you have a storage unit that has a pressure limiting valve on the inlet to the unit. If this is the case, it means you have mains pressure on the cold but have limited pressure (usually 600kpa) on the hot. This results in instability when using hot and cold mixed together. A way to remedy this is to put a pressure limiting valve on the cold at the meter so everything is the same pressure. (removing the one at the hot water heater inlet.) In your new house, if youre using an instantaneous unit, you shouldnt have a pressure fluctuation problem if the pipework is done correctly. Just make sure that the unit you purchase is big enough to supply your needs. When you buy your unit, look for a number in the model type unit you buy. It will have 16, 20, 26 or 32 these numbers correspond to the liters per minute of hot water that the unit passes through it. 24 is adequate for a small unit or house, but not for a bigger house with long pipe runs. The more liters per minute the better the flow and less likelyhood of pressure fluctuation problems, you'll have. But ultimately it comes down to how your plumber pipes the house. Also, (this is important) take out the flow restrictors in the shower head as these cause backpressure and interfer with the unit's efficiency, causing pressure fluctuations. Also try not to buy a unit with 50 degrees pre set temp built in. The water will leave the unit at 50 dgrees but by the time it gets to your shower will have lost temp and could be as low as 45 degrees by the time it gets to you.. its far better to not have the preset model, but use a tempering valve, which can be set to deliver water at the shower at 50 degrees. Re: Double shower heads 10May 18, 2009 8:11 pm vvs mand If your having that problem in your existing house, it might be because you have a storage unit that has a pressure limiting valve on the inlet to the unit. If this is the case, it means you have mains pressure on the cold but have limited pressure (usually 600kpa) on the hot. This results in instability when using hot and cold mixed together. A way to remedy this is to put a pressure limiting valve on the cold at the meter so everything is the same pressure. (removing the one at the hot water heater inlet.) In your new house, if youre using an instantaneous unit, you shouldnt have a pressure fluctuation problem if the pipework is done correctly. Just make sure that the unit you purchase is big enough to supply your needs. When you buy your unit, look for a number in the model type unit you buy. It will have 16, 20, 26 or 32 these numbers correspond to the liters per minute of hot water that the unit passes through it. 24 is adequate for a small unit or house, but not for a bigger house with long pipe runs. The more liters per minute the better the flow and less likelyhood of pressure fluctuation problems, you'll have. But ultimately it comes down to how your plumber pipes the house. Also, (this is important) take out the flow restrictors in the shower head as these cause backpressure and interfer with the unit's efficiency, causing pressure fluctuations. Also try not to buy a unit with 50 degrees pre set temp built in. The water will leave the unit at 50 dgrees but by the time it gets to your shower will have lost temp and could be as low as 45 degrees by the time it gets to you.. its far better to not have the preset model, but use a tempering valve, which can be set to deliver water at the shower at 50 degrees. Thanks very much, thats the information we were looking for I'll look into different shower heads and ask the plumber about some engineering and see what he says. Thanks 2 9569 Hi All, about to commence a bathroom renovation and need some advice on subfloor works. Current subfloor is hardwood T&G floorboards on 90x45 joists, but intention is to… 0 5849 Ask yourself if the insurance company will be aware of the Reno. 4 7382 |