Save up to £590 PER YEAR on your heating billsGet Your FREE Online Quote Today
Save up to £590 PER YEAR a yearNeed a New Boiler?
Boilerhut logo
Witten by Bernard Morgan (Engineer).
First Published: February 6, 2024. Updated: February 16, 2024

Water Pressure vs Water Flow Rate

Water pressure and water flow are key factors of your plumbing system. But what sets them apart? And how do they work together to keep your plumbing running?

Whether you have a combi boiler or a system boiler, this is worth knowing. Below we dive into the details, guided by the expertise of Boilerhut’s engineering team.

Water pressure vs. water flow

Water pressure refers to the force exerted on water to propel it through your pipes and plumbing system. Factors like altitude and gravity influence it. For instance, your upstairs bathroom will have less pressure than your ground-floor kitchen.

On the other hand, water flow represents the volume of water passing through your pipes at any given time. It’s determined by the width of the pipes and the pressure surging through them.

Understanding their role

In simple terms, water flow measures how much water exits your pipes, while water pressure determines how forcefully it does so. Friction can affect both pressure and flow, especially if sediment builds up inside your pipes, causing a decrease in both.

Wider pipes generally allow for better water flow. Closed valves, clogs, leaks, and sediment buildup can disrupt pressure and flow.

Measure your water flow rate

  • Grab a bucket, preferably 5 litres in size
  • Use a stopwatch (on your smartphone)
  • Place the bucket under an outside tap or kitchen sink tap
  • Turn the tap on and start the stopwatch
  • Turn the stopwatch off once the bucket is full
  • Calculate the flow rate: Divide the number of litres by the time in minutes (remembering that 30 seconds is half or 0.5 of a minute).

Example 1: if you filled your 5 litre bucket in 30 seconds, 5 litres / 0.5 minutes (half of a minute) = 10 litres/minute.

Example 2: if you filled your 5 litre bucket in 15 seconds, 5 litres / 0.25 minutes (quarter of a minute) = 20 litres/minute.

Your results: Less than 10 litres per minute indicates low water pressure. Between 10 and 15 litres per minute is acceptable but can be improved. A flow rate above 15 litres per minute is considered good.

Summary

In conclusion, water pressure and water flow rate are essential components of your plumbing system. Understanding how they function and recognising common issues can help you maintain optimal performance and address problems promptly. Trust Boilerhut’s plumbing experts to keep your plumbing system in top shape.

Get Your FREE Online Quote Today!
Save up to £590 PER YEAR on your heating bills.
Quote in 30 seconds. No obligation. Next Day installation.
Save up to £590 PER YEAR!

If you need a new or replacement boiler or are looking at having a central heating system installed, get an online quote (it takes less than 1 minute), and you’ll get an instant price. But why choose Boilerhut:

  • Quick central heating system installation. Next day boiler installation.
  • ‘Excellent’ 5* customer satisfaction on Trustpilot.
  • Finance options available for central heating or boiler installation.
  • 10 to 12-year warranty on boilers.
  • Fixed prices. No hidden extras.
  • Get up to three quotes for different-tier boilers.
  • Instant, no-obligation quote in less than 1 minute.

© Copyright - Boilerhut 2024 - Registered in England & Wales, company number: 8615540 Vat number: GB- 169 0436 95