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Here Is Why Your Hot Water Pressure Is Low

low hot water pressure leading to cold showers

A couple of factors are always in play whenever you have low hot water pressure. Ideally, both cold water and hot water passing through your hot water system must have the same pressure. A discrepancy in the two flow rates may be due to hot water system problems or issues with your home’s entire water supply system.

If you’re wondering, “why is my hot water pressure low?” then one or more of the following situations is most likely the cause.

  • Accumulation of sediment and scale in your hot water system: Whether you use an electric or tankless gas hot water system, you are not free from sediment and scale buildup. When the interior of the tank corrodes, the corroding particles find their way down to the base of the tank, where they may be drawn gradually into the hot water pipes. In the pipes, they cause blockage and subsequently a drop in water pressure.
  • Bent water supply lines: You will most likely find an accordion-type copper water pipe in your tank-type hot water system, and these pipe types are known to bend easily. In cases of serious bends, water flow is impaired and subsequently a drop in water pressure.
  • Plumbing lines with several bends: The pressure of the hot water may be affected if it passes through a lot of bends before emerging from the faucet. With each bend or passage through each elbow, the pressure reduces slightly.
  • Partially-closed shutoff valve: Water flow can be reduced by a partially-closed shutoff valve, thus causing a reduction in pressure across the entire system of hot water supply in your home.
  • General low water pressure: It is possible for the entire house to experience a sharp drop in lower pressure. In such cases, both the cold and hot water supplies flow reluctantly. The fix is usually from the main water supply entering your home.
  • Wrong sizes of water supply lines: In a case where the size of the water supply lines is considerably smaller than that of the main water supply or vice versa, the water pressure will decrease, after all, water will tend to flow from the large pipe into a smaller pipe.
  • Partially closed shutoff valve of the direct water supply: Both the hot and cold water supply lines will experience a sharp drop in water pressure when the water main supply line is not 100% opened.
  • Faulty or wrong configuration of the pressure regulator: If your home has a pressure regulator and it is not set correctly to the optimum, there won’t be adequate water pressure all through your home. On the other hand, a faulty or old regulator can be the reason why you have low hot water pressure.
  • Worn out fixture and/or high amount of accumulated scale in the fixture or faucet: A worn-out fixture or faucet will contain high amounts of scale, which in turn reduces the hot water pressure. The simple fix is to replace the affected faucets and perhaps avoid hard water.

Fixes For Low Hot Water Pressure

After identifying the extent of the problem; whether it is observed in just one shower, sink, bathtub or all the hot water fixtures present in your home, the next step is to narrow down what could have caused the reduced hot water pressure. Once you know the cause, apply one or more of the following fixes to get a lasting solution to the situation.

  • Accumulation of sediment and scale in your hot water system: For a relatively new hot water system, flushing and cleaning the sediment and scale from the tank’s interior will work. However, in cases of older systems, a complete hot water system replacement is the better option. Invite your plumber to determine the better option.
  • Plumbing lines with several bends: This can be solved by repiping the plumbing lines that lead to problematic faucets. However, if the issue affects the entire system, you can install a pressure regulator if you don’t have one yet. Your plumber can set the regulator to increase your hot water pressure.
  • Partially-closed shutoff valve: The simple fix here is to open the shutoff valve completely so that the water flows with no hindrance whatsoever.
  • General low water pressure: You can install a pressure regulator if you don’t have one yet, and ask your plumber to set the regulator to increase your hot water pressure.
  • Wrong sizes of water supply lines: Repiping is the first option here, which makes the supply lines bigger. This, in turn, reduces friction, while increasing the pressure. Note that the effect, i.e., the increase in pressure – can be considerably pronounced in some cases.
  • Partially closed shutoff valve of the direct water supply: Open the water main completely, so that water flows at the highest speed and pressure possible.
  • Faulty or wrong configuration of the pressure regulator: Start by checking the regulator’s setting; if the setting is correct and you still have reduced water pressure in the cold and hot water supply lines, you may consider replacing the regulator. However, if the pressure is only too low, all you need to do is to tune it properly to the normal pressure. It may be difficult to get the ideal setting of the regulator. Hence, it is best that you bring in your plumber.
  • Worn out fixture and/or high amount of accumulated scale in the fixture or faucet: If you have confirmed that the faucet or fixture is the reason for the drop, ask your plumber to replace them with new ones.

Lastly, considering that not everyone has the same plumbing configurations in their home, or the same issue causing reduced hot water pressure, it is important to observe the situation closely and find out the particular cause and the best solution for your plumbing system.

Whether you’re looking for a fix or a total replacement, trust the best plumbers in Sydney at Fixed Today to the do the job for you. Contact the hot water system experts and get your hot water systems fixed today!


What they say about us

Our Satisfied Clients

I found Steven to be very professional and helpful. The boys went out of their way to fix and suggest long term solutions to a problem that could have cost me big in the future. I would not hesitate to recommend Fixed Today!

Bruno Vales

Fixed today plumbing is true to their word. The service was great, Steve is very professional and gave some great advice.

Robyn Field

Fixed Today is an amazing company, their customer service is a 10/10. Above and beyond for every job and they cater to the needs of my sites, their response time and attention to detail is phenomenal. Highly recommend Steve and his team from Fixed Today!

Isabel Casey

We moved into our new house without realizing there was a blockage. Steve’s service was outstanding. He arrived and was on the way to solving the issue within an hour of us calling. His no-nonsense approach has allowed us to be excited to move into our new home again. Thanks so much.

Hayley Legg

Highly recommend. Marvin fixed a blocked drain at our home. He was friendly, upfront with the pricing and clean. He also provided suggestions on how to prevent the problem from happening again which was considerate and nice. I would call them again!

Sofie Dimos

Highly recommended. After calling another plumber, our blocked shower and basin was still not fixed. Marvin came to the rescue. Same day service – he was on time, honest, and knew exactly what needed to be done to get the job completed the first time!! I will be calling again!

Aret Elamasian

Highly recommend! We were recommended by a friend who used Fixed today and we could not be happier. The job was carried out exactly the way it was explained and they even cleaned up.

Andrew David

We had two separate issues, a burst pipe in the laundry and the hot water system needed replacement. The team came on the same day and fixed the leak and replaced the hot water system. Very professional, friendly, clean and efficient. I would recommend Fixed Today to all my friends.

Bianca McConell

Nothing was too much for Steve and Jamie. They sourced a new toilet cistern and fitted it the same day. All cleaned up after the job was done too. Highly recommended.

Alan Greaves

Had Steven over and he solved my tab and got water issues so quickly! Called the next day to check up and ensure all was working well. Really hard to get good service these days and this company deserves massive praise!!! Amazing service

Nathalia S
True Local

Prompt to arrange inspection and find issue. Pricing was a bit expensive, but did a good job. Steve is easy to communicate with and returns calls.

Keen Consumer
True Local

Steve & team did a great job around the house and were very quick.

True Local

Great experience . This is a customer focused business who did a great job at a reasonable price. Terrific with an elderly client under difficult circumstances. Thank you so much.#reviewtowin

J Greenaway
True Local

Very good plumber, very reliable

Damiem Esposito
True Local

Thanks for fixing my blocked drain efficiently and with little fuss. Great service from Mathew and Marvin. 5 Stars!

True Local

Thanks for replacing our Hot water System at such short notice and in the dark! Competitive pricing and courtesy calls to let me know you were running behind a huge help . All very much appreciated. Would recommend these guys and wouldn’t hesitate to use them again.

True Local

Really you are fabulous for give your best service , I just called you and you were at my home.However the fault in pipe joint was small but you gave your precious time for solving such type of small things without any extra charges.Thanks for that guys.

Leo B
True Local

Great service and price Will definitely use again

True Local

Hi Fixed Today thanks for un blocking the pipe that was overflowing I was having a panic attack until u guys came and fixed thank u again

True Local

Thank you for your prompt service will definitely recommend your company!

Linda Burke Harden
True Local

Steve installed a new hot water system for me. He’s very well price and has outstanding workmanship. Well done Steve. Thanks

True Local

Thanks Steve for your quick response and honest feedback. Although I was a bit embarrassed at how simple the hot water fix was, you did advise me earlier that it could be a simple do-it-yourself fix. Happy to give you the business. Darren

True Local

Had a problem with the hot water system. Steve diagnosed the problem quickly and found that it was a faulty thermostat. Replaced the part and solved the problem. Steve communicated well and was very professional. Would recommend Steve for any of your plumbing problems

True Local

Steve is honest and reliable… friendly and professional… no job too big or small.

Steven Bou
True Local

thank you steven, job well done

True Local

I found Steve and his team on here – After speaking to approx. 6 other plumbers Steve answered all our questions and had his team here to fix our problem within the hour (in the dark!) Might I also say he was the cheapest! I would highly recommend these guys to anyone looking for a plumber that doesn’t want to rip you off. Thanks again Steve.
Craig – Seven Hills

True Local

Thanks to the team at Fixed Today. Great fast friendly service. Got the job done right first time no hassles. Highly recommended.

Patrick Gh
True Local

Thankyou to Steve and his team for all the plumbing work they done at my house. Renovating two new bathrooms seemed hard but Steve and his team made it so easy. Very professional, hardworking and efficient. Love the way my bathroom turned out so modern would recommend to anymore!!

Vanessa Shaw
True Local

These guys are awesome, I had a leaking pipe in the morning they instructed me to turn the water off at the main until they came they where there with in the hour and fixed the pipe and mind you the price was very reasonable.. Thanks guys.

Marvin Shm
True Local

Thank Steve, prompt service just wanted to say keep up the great work with us.

CtCC Group Pty Ltd
True Local

I would recommend these guys to anyone. On time very professional and there prices are very reasonable for great service and top quality products.

Lili Bossnija
True Local

This is the second time I have used Platinum hot water and plumbing. On both occasions I have been 100% satisfied with the service. It is very rare to find tradesmen that demonstrate professionalism and have genuine pride in their work. Will highly recommend them

Vanessa Va
True Local

Thanks Steve for a great job , you and your team are great due to your reliability and honesty Also very well priced ! Well recommend and use your services again

George Zab
True Local

Thanks very much Steve for coming at such short notice to help fix our toilet! Rescued us from another long weekend of hassle. A very professional job! Highly recommended!

True Local

Thanks guys u did a really good job fixing the leak under my sink.

Norma Bahb
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Thanks for fixing my plumbing issue. Very courteous and professional service. Much appreciated

Roger Mendis
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Prompt service, good advice and price quoted before job done. Would recommend to friends.

Fran B
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Thanks for your help great friendly service, prices up front would certainly use you guys again

Louise Saunders
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