It is easy to confuse the two, but they require very different solutions. Understanding which issue you have ensures we send the right expertise to your door.
Mains Water Pressure
Boiler Pressure
This affects the physical flow of water coming out of your taps and showers. If the water trickles or the stream is weak, you are in the right place. This page covers household water supply issues.
This relates to the sealed heating system inside your boiler. If your boiler gauge reads below 1 bar or your radiators aren't heating up, you need our heating services.
Common Causes of Low Water Pressure
A drop in pressure can stem from several sources, ranging from localized blockages to external supply factors.
Pipework Problems
Faulty Valves
Mains Supply Issues
Over time, older or narrow pipework can suffer from mineral scale buildup, creating a partial blockage that restricts the free flow of water throughout your home.
Many properties have pressure-reducing valves or stopcocks that can degrade or become partially closed, inadvertently choking the water supply before it reaches your taps.
Sometimes the issue lies outside your property line. While we can diagnose this, supply-side drops affecting the entire property may ultimately need confirming with your local water utility company.
Low Pressure in Showers
A weak or trickling shower is one of the most common and frustrating complaints we encounter. When pressure drops specifically in the shower, it can turn a refreshing morning routine into a daily annoyance.
This issue is often isolated to the shower itself, caused by a scaled-up showerhead, a failing thermostatic mixing valve, or issues with the specific feed pipes. We can inspect the fixture and the immediate pipework to restore a powerful, consistent spray.
If you are experiencing low pressure at an individual kitchen or bathroom sink, the good news is that it is rarely a whole-house problem. Localized weak flow usually points to an issue right at the fixture.
Common culprits include a blocked aerator full of hard water scale, a worn-out tap cartridge, or a kinked flexible hose beneath the counter. Our engineers can quickly dismantle, clean, or replace these small components to get your tap running at full capacity again.
How We Diagnose and Fix It
Initial Assessment
System Inspection
Targeted Resolution
We start by testing the flow rate at various points in your home to determine if the issue is isolated to a single fixture or affecting the entire property.
Our engineers systematically check your internal stopcocks, pressure-reducing valves, and visible pipework for signs of restriction, scale, or failure.
Once the root cause is identified, we explain the findings clearly and proceed with the necessary repairs—whether that means clearing a blockage, replacing a valve, or advising on utility supply issues.
Areas We Cover
Our dedicated team of plumbing engineers provides fast, reliable service across the heart of the capital. Whether you are dealing with a trickling tap in Camden, a weak shower in Islington, or whole-house pressure issues in Westminster, we are ready to assist. We also frequently dispatch our experts to resolve complex pipework restrictions for residents in Kensington & Chelsea, Hammersmith & Fulham, and Wandsworth, ensuring that homes throughout these six boroughs enjoy consistent, reliable water flow.
What causes low water pressure suddenly?
Can low pressure be fixed without replacing pipework?
A sudden drop is often caused by a closed or faulty stopcock, a failed pressure-reducing valve, or an emergency water main repair being conducted by your local utility company nearby.
Yes, in many cases. We often resolve pressure issues by cleaning aerators, replacing faulty valves, or clearing localized scale blockages without needing to replace entire pipe runs.
Is low water pressure a plumbing or a water company issue?
Does low pressure affect just my shower or the whole house?
It can be either. If the issue affects only your property or specific taps, it is likely an internal plumbing fault. If your neighbours are also affected, it is usually a utility supply problem.
It depends on the root cause. A failing main valve will affect the whole house, whereas a scaled-up cartridge will only cause low pressure in that specific shower or tap.
Is low boiler pressure the same as low water pressure?
No. Low boiler pressure affects your central heating system and radiators, while low mains water pressure affects the flow of water from your taps and showers.
Restore Your Water Pressure Today
Don't put up with weak showers and trickling taps. Contact our team to arrange a professional diagnostic visit and get your water flowing freely again.
