The key things are the flow rate, the type of the pump and the temperature control. Flow rate just refers to how much water the shower can put through in a given period, usually in litres per second. The higher the flow rate, the more powerful the shower.
Investing in a power shower: Power showers use an electrically driven pump to transport water from your hot and cold supply. Designed to operate even with low-pressure systems, manual and thermostatic power showers give you up to three times the flow.
If you're looking for the most pressure, go for the 2.5 GPM Flow Rate, unless you are restricted because you reside in California, Colorado or New York. Again, this has been the Maximum Flow Rate since 1992.
The pressure produced by an electric shower depends on the power rating, which is measured in kilowatts (kW). The higher the kW rating, the better the flow and force of water. These can be attached to mains pressure systems or gravity fed systems. Mains pressure from a combi boiler will provide a decent flow of water.
GPM means Gallons Per Minute. Also known as "flow rate", GPM is a measure of how many gallons of water flow out of your shower head each minute. Since 1992, a maximum of 2.5 GPM is the federally mandated flow rate for new shower heads. This means no more than 2.5 gallons of water should flow out each minute.
National standard - 2.5 gpm
This includes all type of shower heads like hand-held shower, wall mount shower head, shower head systems, and rain showers. For shower heads made pre 1990s, it is still possible to find 3.5 gpm flow rate or even higher.
Know the Impact.
One person who showers 10 minutes per day with a 2.5 GPM shower head uses 9,125 gallons of water per year. Switching to a 2.0 GPM shower head saves more than 1,825 gallons of water and $25 per year in water and energy costs. Those numbers jump to 7,300 gallons and $100 in savings for a family of four.
Most low-flow showerheads have a rubber pressure-reducing valve (called a regulator) to maintain a lower pressure. You can increase the flow by simply taking it out. You could also consider enlarging the hole that allows water into your showerhead with a drill to increase the amount of water coming through.
A 2.5 gpm shower head will have a better pressure and shower experience than a 1.5 gpm shower head. A 1.8 gpm shower head would have a better pressure and shower experience than a 1.0 gpm shower head. Another drawback of low flow shower heads boosting the pressure is the temperature instability.
Higher GPM will help you get the job done faster. For most homeowners, identifying your ideal PSI (whether low or high) is a good start. Once you have the PSI you need, then look for higher GPM numbers to get better efficiency.
A 10.8kw electric shower is the most powerful electric shower there is and it means that it will provide improved pressure and a higher water temperature. For the best performance, 10.8KW electric showers need a minimum of 1.5 bar water pressure with a flow rate of 11 litres a minute.
Low pressure in a shower can be caused by several issues such as a clogged showerhead, a worn-out mixing valve, closed valve, leaking pipe, or even a faulty water heater.
Incorporate the Navy Shower Technique
First, you turn on the shower, say for 30 seconds, allowing you to get completely wet. After which, turn it off and lather up the soap, scrubbing it around your body. Lastly, turn on the water again, rinsing away the soap in a minute or so and voila, you are done.
Will buying a new shower head increase water pressure? If you buy the right shower head it will increase how powerfully the water comes out of the showerhead even though it isn't actually increasing the water pressure of the home itself, it does increase the water pressure coming out of the showerhead.
Depending on your current flow rate, you may be able to increase the flow simply by removing the filter or restricting device or replacing the showerhead with a higher-flow model, such as increasing to a standard 2.5 GPM head. Before you change the showerhead, make sure that the new model is legal in your area.
While it is possible to remove flow restrictors from shower heads, we strongly advise against it for several reasons. Flow restrictors for faucets are an integral part of most aerators and it is generally not possible or desirable to remove them.
A high pressure shower head sprays out water with more force, maximizing the water flow, giving you a more complete cleaning experience, but using more water and energy. A high pressure shower head provides a spa experience with natural massage therapy and different spray patterns that is beneficial to your wellbeing.
Pressure-Reducing Valve
Look on the main supply pipe near your water meter for a conical valve that has a bolt sticking out of the cone. To raise pressure, turn the bolt clockwise after loosening its locknut. Keep an eye on the gauge to make sure the pressure is within bounds, then retighten the locknut.
Water-saving showerheads that earn the WaterSense label must demonstrate that they use no more than 2.0 gpm. The WaterSense label also ensures that these products provide a satisfactory shower that is equal to or better than conventional showerheads on the market.
Look for the WELS rating
Each label includes the water flow rate (measured in litres per minute) and a star rating. It's generally recommended that you choose a shower head with a minimum 3-star rating – which uses 9 litres or less per minute.
Efficient shower heads use at least 1.5gpm. Taking the same amount of time in the shower uses only 15 gallons of water. The water savings amount up to 65 gallons of water!
The typical residential water flow rate for small households is between 6-12 gallons per minute, so unless you plan to add extra kitchens, bathrooms, or laundry rooms to your home in the future, your home will never need to exceed that final GPM, assuming your flow rate is already normal.