Top Reasons Why Proper Water Pressure is Essential for Every Kiwi Household
Table of Contents
Why Water Pressure Matters in Hot Water Systems
Your hot water system is not only about the heating part — the way the water flows also matters. Water pressure is a factor that influences how well taps, showers, appliances, and the hot water cylinder will work. If the pressure is too low — or too high — you will have notice problems.
Low pressure basically means that the flow at taps or showers is weak, the hot water delivery is slow, or in some cases, it is not possible to run multiple outlets or appliances at the same time. This takes away comfort and convenience — and usually people have to wait longer or juggle appliances.
On the contrary, too high pressure can be harmful — it can lead to pipe, fitting, cylinder, and valve overwork, which, in turn, can cause leaks or bursts. Besides, it shortens the lifespan of plumbing fixtures and raises maintenance needs.
What “Proper Pressure” Looks Like
A well-balanced pressure, that is not too low and not too high, will give a smooth flow, safe operation and increase the life of the device. In the case of modern homes in New Zealand, a mains pressure cylinder fitted correctly or a supply that is properly regulated will guarantee a consistent delivery to showers, taps and appliances.
Pressure regulating valves should be installed (or adjusted) where it is necessary, particularly in houses that are connected to high-pressure water mains. A system, which is over pressurized, might need a pressure reducing valve (PRV) to help the plumbing and the hot water cylinder to stay in good condition.
What Can Go Wrong With Poor Water Pressure
If water pressure is too low:
- Showers and taps may flow weakly, making showers unsatisfying and dishwashing or laundry less efficient.
- Hot water delivery can be delayed, especially if your cylinder sends hot water through long or narrow pipes. Delays waste water and energy as you wait for hot water to arrive.
- Appliances expecting standard flow may underperform or be damaged due to starved water supply.
If pressure is too high:
- Pipes, joints, cylinder valves, and fixtures can be stressed, risking leaks or bursts over time.
- The hot water cylinder’s safety and expansion valves may be triggered more often — increasing wear and risk of malfunction.
- Household appliances may fail prematurely, especially those dependent on stable water pressure.
How to Maintain Proper Water Pressure
- Install or check pressure reducing valves (PRV) — If your mains supply is high pressure, a PRV at the inlet can regulate pressure to safe levels for your plumbing and cylinder.
- Maintain your hot water cylinder and plumbing — flush tanks to remove sediment (which can restrict flow), inspect valves, check for leaks, and ensure cylinder and pipes are insulated and in good condition.
- Use a correctly sized cylinder and pipework — undersized or old piping may limit flow, especially when multiple outlets are used simultaneously. A cylinder sized for your household’s needs helps ensure adequate water volume and flow.
- Have regular professional inspections — a licensed plumber can test water pressure, inspect valves and make adjustments or repairs to ensure safe and efficient operation.
Why Proper Pressure Improves Safety, Comfort & Efficiency
With correct water pressure, your hot water system:
- Delivers a reliable flow to showers, taps and appliances even under heavy demand.
- Reduces strain on plumbing components, reducing risk of leaks, bursts, or premature failure.
- Ensures water heating and delivery systems work efficiently — avoiding waste of energy or water.
- Improves household comfort and convenience — consistent flow, warm showers, predictable performance.
How The Cylinder Guys Help Ensure Your Water Pressure is Right
At The Cylinder Guys, we:
- Check and adjust water pressure at the mains if needed (installing PRVs where required)
- Inspect hot water cylinders, valves, and plumbing to ensure they’re compatible with your pressure supply
- Recommend cylinder size and piping configuration suitable for household demand and water supply conditions
- Provide maintenance and servicing (flushing, valve checks, insulation) to keep pressure and water delivery stable and efficient
Contact us today for a comprehensive pressure and hot‑water system check — we’ll ensure your home’s water pressure supports reliable hot water, protects your plumbing, and delivers comfort and safety.