Hot water pressure slow? Another cause of slow flow from hot taps 

Thanks for the straightforward simple advice which allowed me to tackle my family’s low hot water pressure problem quickly and easily without the need for an expensive call out, greatly appreciated 🛠👍🏻😀

How on earth have so many people "Disliked" this video? Idiots and Trolls. You have helped me solve a massive Plumbing issue. Thank you so much.

You sir are pure genius. Thank you for saving me a service call. I was able to clear out a clog from the hot water output side of my hot water heater thanks to this video.

This guy is good!!! Thank you! You've helped me to get rid of my airlock!!

Thanks for this video!! Our hot water heater was definitely plugged. Save a ton of money cleaning it out ourselves and now we have great hot water pressure!

Thanks for the video, it does work when I released the pressure valve, water is running fast however it last only a day then slow again? how do I fix it?

Spot on, absolutely correct! Saved me from having to replace my water heater. Thank you, thank you, thank you.

Thanks for taking your time making these videos. Very helpful.and clear. ..love all your videos

This fixed my hot water low flow issue, here in Florida, where we have hard water due to all the limerock. I have flexible pipes connected to the hot water heater (boiler) and the output one had less than 1/16th of an inch (about 2mm) of an opening. The sediment was literally rock hard and I tried to drill it out using a masonry bit but couldn't clear it completely so ended up replacing the pipe. What a difference it made so many thanks for the useful information.

Great video Im guessing this can have the same effect if your cold suppy is from the main, tanks on the same level as the tap so pressures gonna be rubbish anyway but this might help a bit.

Thank you so much this was the problem with mine I checked after your advice absolutely spot on your videos are brilliant TOP RU-vidR 👊

Spot on as always, brother. Appreciate the videos. Please keep them coming 👊

Honestly never thought of this, was about to give up and hire someone to fix it but I gave it one last try looked on here found this video and that's exactly what it was was blown away. I have a oil burning hot water furnace and it has the same issue thanks for the video!

Thnku so much for ur stright point advice i just got that issue in neighbour house can u give some advice should we leave that tank as is it just remove pipe and clean it make it running or we cant clean just need to change hot water tank

I live in a flat and have one of those immersion heater/ boiler/ economy 7 things... and all of a sudden I've noticed reduced pressure from the hot tap in the bathroom and kitchen AND power shower??? The latter motor is straining when I use it. Could this be the issue? Thanks

Hi there, love the videos. I have this exact problem, low hot water pressure from all taps. Where I live is classed as a `slightly hard water` area, is this likely to be my problem? I have an economy 7 immersion heater which is probably over 20 years old, is it straight forward to unscrew the hot water exit pipe at the top to check for a blockage, I would not want to unscrew and damage something and be left with a leak, or is it a simple job for a DIYer like me, thanks.

Thanks for all your videos, they’re a great resource! I watched this video as I have low hot water pressure. However my cylinder is an indirect type only heating the water when our oil boiler is running. It has no immersion. As I have no element do you have any advice on why all hot taps are slow? I have just changed bathroom taps if that makes any difference. Thanks in advance 🙏

Hi, you are spot-on there at two minutes. I had exactly the same problem. However it was about the TEE feeding out and away to some 15 mm pipe. Some scale and black in colour, was removed. If some broke off earlier I suspect it's travelled further down through some bends into downstairs kitchen where the water flow is poor. So what if you are improving your home do you replace all the pipes in the hot feeds? Now how to dissolve the stuck scale, could you use say radiators cleaner or so mild acid and leave it to soak somehow ? Rig up some container and fill said restricted hot water pipe and drain into bucket having removed from taps and then seal off for 12 hours.

Before I undo the pipe, do I need to turn anything off beforehand? If I just remove it, will it be safe etc ?

Great information. Could this be a problem with indirect cylinders also not just immersion heated cylinders? Mine is an indirect cylinder in a bungalow. Always thought there was no hope until I viewed your video.

hi. i had plumbers in the flat for years. Always same issue with the hot water low pressure. I've gone through two pumps. no one highlighted this issue. when unscrewing the top do I shut valve off & hot water , or can I find this in the manufacturer's manual ? live in the SE london and water is very hard... destroying shower components ect ..

The last couple of weeks I’ve noticed our hot water pressure has gone quite low. However, we have a combi boiler and do not live in a hard water area. During the winter I have to deliberately run the tap half full, so as to heat the water enough through the combi to get the water hot for a bath. However, it now runs at half the rate, even with the tap turned fully on.

Hello, I have a tankless water heater. works great except to my kitchen sink low pressure out of the hot tap. long long time to get hot water. I have a single handle faucet tried a few things last was to switch the cold and and hot water lines to see if it was the hardware. Now I have the same problem just reversed lol. hope you can help

Great video thanks

Great tip

Hi, thanks for this very useful information. How though do I remove the fitting from the tank? i.e what do i have to turn off to undo the fitting? Do I have to empty the tank? Thank yo for any advice you can offer.

Hello Are you saying the whole cylinder needs to come out? If that's the case you are saying a professional person such as a plumber is required? It seems that's the platform l am having because the water is not circulating through all the radiators in the house and there is low water pressure from the tap in the taps upstairs. If l have to get a plumber to carry of the repairs how much do you think it would cost on average? You response will be appreciated.

I removed mine and still the hot taps are slow. Well they start off good and gradually slow down. Could it be a Gate valve next to the Tank in the Loft?

Hi, I have a bathroom and a wetbar in my basement. I have no hot water pressure coming from the faucet in the bathroom or the bar sink. I do however have hot water pressure from the sink in my laundry room in the basement and from the sinks on the first floor of my home. The only conclusion I can come to is that I may have a clog in a line in my basement. What do you think?

Bath, bathroom sink and kitchen sink are very low pressure. We had this few years ago and was sorted by removing and air lock. We don't have hard water in our area, but the system is 30 years old (large cold water tank over an immersion heater, economy 7 setup) So could this be the problem even in a soft water area?

Well done, thanks, Mike

Very useful thanks

Hello there, just a bit of advice please, I'm looking to fit a pump on a gravity fed system that's an electric emersion tank, and a tank for a Y system boiler, is it still OK to go down the line of fitting a pump and also a S flange? Many thanks Ryan

My upstairs hot taps are very slow, but downstairs are ok. I have checked the outlet from storage tank and inlet and outlet on the cylinder and all appear to be clear. Cylinder was replaced 2 years ago, but didnt improve things. My hot water pipe from cylinder goes up to the loft floor before dropping down into the upstairs bathroom and then downstairs. System worked fine when I moved in (1980') but has got worse in the last few years. A plumber suggested a pumped H/W system, but couldnt guarantee it would cure the problem. Any thoughts?

Hi I have a combination tank in my flat and the hot water pressure is very slow in the kitchen but a bit better in the bathroom what Cani do to help it

Is it safe to unscrew this and how do it stop water coming out of the tank..it's in my daughter's cupboard upstairs in our house

So we have this issue and our top pipe turns 90 degrees and connects to a pipe at the back. How do I go about even getting to clear the blockage? I've undone the pipe but it will not budge at all.

I've got a combi boiler no separate water tank and have this problem. Where would I need to look? Thanks Derek.

Hi there, so sorry to bother you. I hope all is well. I've been searching and searching ... I'm hoping you would be able to help us please. We have a 5 year old combi boiler, the hot water pressure is not what it used to be and is lower at all faucets. We have been experiencing this for a couple of months now. Cold water is near 10 L/Min and hot is almost 6 L/Min. The pressure drops quickly and then it remains constant. The boiler was serviced very recently and the supply pipe along with an old metal pipe in the property were also updated. All of the above was done to improve the situation but unfortunately it's still the same and I'm not sure what else could be done. I would really appreciate it if you could give us any advice please 🙏. Kind regards

I have the opposite of slow flow in hot water line. I have a increased pressure issue. Can hear the bathtubs faucet start to make noise. Go in and open hot water valve and it spits out with great force at first. It never does that when I open the cold. Only the hot water line. Can't figure out why there is so much pressure in it.

Great video, my hot water trickles out of all my hot taps. Can you explain why my radiators don't get hot in the middle. I have 8 in the house, only 3 work properly. No one can find the problem as to why? Any help greatly appreciated

Very clear explanation. If it is neither the tap or the furring up would a water pump to the hot tank increase flow?

Hi, great video. I've a blockage somewhere. I unscrewed the hot water pipe at the wall and turned the cold water tap back on and the water ran freely from the hot pipe. So there must be a blockage in the hot pipe IN the wall (it's not accessible) Any idea how I can sort it? Thanks a million!

Hi is it safe to blank redundant coil in the cylinder back boiler no longer in use? Thanks Phil

Hi deret, can you help us? We have the same problem here in our house, we called a gas engineer and he explained its because our hot water tank is located on the bottom floor (we have 2 floors) the bathroom is at the bottom, he said tanks are usually on the second floor so water pressure is good

Hi, thanks for the video. I'm trying to fix my mum's hot water pressure as it''s really bad. Think is she has a Gas boiler, I know that with the Gas boiler the hot water comes out the bottom instead. I am just wondering if I can do the same thing or even better if there's a way to clean the whole boiler with a limescale remover liquid? Thanks in advance.

Thanks for video, Is it easy to change the pipe valve on top of the cylinder. suddenly there is no pressure in my shower.

A vertical vent can cause a phenomenon called one pipe circulation and cool the cylinder. There should be 457mm of horizontal pipe before a vent and supply

could this affect the hot water pressure in my bath all my other taps are running normal

Hi do I need to drain the tank to remove the limescale blockage from we're your saying it is as I have this problem

How do u clean the bit thats blocked please as new to it .cheers council kev uk

Hi, I am not very knowledgeable in regards to where the hot water on and off switches are in my home. I had shut off my main water switch because I was trying to repair my dryer. I also had to shut off the hot water, under the sink, because I was experiencing a leak with one of the faucets that went to my washing machine (I have a stackable washer and dryer). I had turned many valves, even on the hot water heater, because of this problem. I eventually had to have a plumber come in and repair the leak. However, after I turned all the faucets back on (at least I think I did this) my shower is not supplying hot water like it used to. I have to put the dial all the way to the hot side and i can tell that it is just the hot water now. It comes out with very little pressure and when I go to get some cold the pressure is stronger, but it gets very cold. It was not doing this before. I think it might be because of all the things I turned or didn't turn. I need someone to go over all this with me. I had turned something that said, "cold water" off on my electric heater, but I'm sure I corrected that when the plumber left. I turned the one under the sink back on. I turned it more this morning, thinking that might be the cause of all this. I will see how it goes. I can't figure out what I did wrong to create this!!!

Hi I have low pressure from my hot water tap in the kitchen am on a gas boiler any ideas thanks for sharing all your brilliant videos

I read somewhere that i should cap off the faucets then with the hot water tank off and draining threw a hose.. Flush lines with cold water by opening both the hot and cold on the faucet that i blocked.. This makes more sense to me. Thanks

Hi I had my Main Combi 30 HE boiler replaced with a new Valiant ecoTec Pro 30kw combi boiler 2 days ago. Later that day when I had a shower I noticed that the water flow rate wasn't as strong/fast as it was before. It is affecting all the taps in our house. Do you know why this could potentially be. I know you can't give me an exact cause as you haven't seen the boiler/ch system but could you tell me what you think it might potentially be? Thank you very much in advance.

Hi There, I am struggling to undo mine as it is very tight and I guess the lime scale has gone im between the pipe and the connector, also, someone painted the pipe which makes it harder. Any tips? Please give me your email so i can send you a photo?

Do I have to drain the emersion tank before attempting to clean the blockage?

Hi mate, i had a problem on my bathroom hot water tap for some reason stop working propely , only when i turn to hot water, ( the bathroom tap ahs been change and also the valve under the sink has been changed) the kicthen tap work perfect on both hot and cold, i live in a 1 bedroom flat and i have a small boiler room, please can you help me with some advice Many thanks

Do you have to close off water anywhere before taking off

My city blew a main a few months ago...water was out for a week. When it came back on my whole 2nd floor lost most hot water pressure but bottom floor is fine.

My hot water feed was fine and then an 'engineer' came and drained the system and when it was turned back on just a trickle from the hot tap cold feed is fine can you help?

I turned off the cold feed to the immersion tank via the gate valve to change bathroom taps and turned the valve back on once complete, now I have no water (hot or cold) from any of the hot taps in the house. My suspicion is the gate valve has failed and cannot fill the immersion tank. Is there anyway to test this theory, maybe draining down the tank and see if the roof thank fills up? I know the ball valve in the tank is ok as I can hear it filling when using the gravity fed cold water taps and have used the airlock method to see if that was the problem to no avail. Any ideas?

Hi. Recently ran a bath. The water contained a lot of dust and debris that appeared to come from the hot tap. The pressure from the tap has dropped considerably since then. Any ideas what is might be? Cheers

Thank you!

im getting this problem but i dont have a tank i dont think i got ideal logic boiler the taps run strait from that im sure what could that be

Do you have to empty the hot water system before you open this?

Hello. Please can you help me. I've had a new combi boiler (in our bathroom.) On completion I noticed a slow 'hot' tap in the kitchen (downstairs) also the hot tap only releases cold water. The hot taps and shower upstairs are fine pressure wise and in releasing hot water. When I asked the engineer he said it was because I needed a new tap as it was leaking? (By this point he was in a rush to go home.) Which makes no sense as it was working fine previously. What do you think is the problem? Please help.

Thank you good sir!! problem solved!

Hi I have this problem of really bad water pressure to hot taps I'm in a bungalow just wondering before I try this remedy do I have to turn off any water going to the cylinder??

champion! thanks mate

Thanks, Verry Helpful

I have a question for you. I have an issue with only my kitchen faucet. There are air chamber tubes on each shut off valve under the kitchen sink. Also a brand new hot water tank I installed which is directly under the kitchen. There are obviously 2 pipes going to the kitchen sink, both pipes are roughly 10 ft long from the tank to the kitchen faucet. So my issue, so I thought was the diverter in the faucet. So to rule this out, I removed the cold water supply hose and pointed it in a bucket, water came out smooth. So I took the hot water supply hose, disconnected it from the faucet and put it in the bucket and turned the valve on, the water is spitting and spraying then goes to a thin stream when I turn the water up full blast. So my guess is whoever sweated the valves on possibly over heated the hot water shut off valve and destroyed the rubber seal inside the shut off valve. I cant think what else it could be. Does this sound right to you before I go and cut off the valve and replace it? I like to add none of the other faucets in the house does this.

How do I clean the pipe? Is there a video on how to do it?

Just moved into the house and I have a poor hot water flow to all of the tap outlets. The hot water cylinder does not have a immersion heater fitter. Could we still have this blockage occur without the immersion heater installed?. Our area is very hard water, the kettle is covered in limescale within a week of descaling. Thanks

Great Vid Big Boy, I would not have thought to look for a blockage there, good info, cheers..

If its blocked can you just clear it out will it be OK after that.

i have an on going hot water issue in our house for the longest time i couldn't work it out.So i started looking so far up the pipe hot water and then stops so was looking around with my megnetic light and noticed it was sticking to the copper pipe,turns out i have a blockage going the full length of my hotwater system.

Hi Can you please help, I got a combination hot water tank and very low hot water pressure on all taps.please help Thanks

Thanks for the video, but how do I check and fix this?

Would be nice to get a solution for this issue! Thanks

I live in a soft water area but have this problem as well. water runs for a couple of seconds at full pressure and then tapers off rapidly to a much lower rate. This has started over the last few weeks. Economy 7 system without a header tank. Is this still likely to be the problem or is there another cause?

Do you have a demo of a fix?

Total novice here... how do I check to see if sediment in the pipe is the issue? and how do I clean it if it is? Must I drain the tank prior to disconnecting the pipe? If I clean it and the sediment falls back into the tank, have I created another problem?

What do I need to do before removing to check?

My hot water flow to shower has gone down substantially, I have bought a new shower head and flexi pipe changed them both but no difference any idea’s PLEASE

does the same apply even if you have a combi boiler?

I have a rinnai water heater. I have cleaned the filter. But, my hot water pressure is very low. The water is very hot but has no pressure.

I think I have to send this video to my plumber. I live in a small (50 sqm) and I am suddenly having this problem for 6 months in all my tree taps in the flat. The plumber came and replaced the combination valve but it didn't solve the issue. I have a Santon premier plus economy 7 tariff. Anyone to recommend that can solve this issue in south London (UK)? 😅

Very helpful video. Thanks.

What about gas water heaters? could it happen the same way?

Just found out my parents have had low hot water pressure for the last 24 years and never challenged it. Ive opened up all the valves i can find and its made little difference, happens on all hot water taps, cold water is rapid! There isnt a pump or something that works at different speeds ?

Thanks for the video, but how to fix it please?

Mine has pressure at the beginning of a shower and then dies off to a trickle ,if I turn the hot tap off for 10 minuets it builds up a bit more pressure but dies off again after about 30 seconds .

I am having this same problem at home where the flow and pressure on the hot water line has reduced considerably. On my hot water tank, I have two outlets coming off the top. How do I identify which one is the hot water one in order to remove and clean....Thanks ....Digi Reply

Pip pip cheerio good video mate

I'd like to know why my mains water tap runs from cold to hot to cold again happens all the time and not only to me is this a scam to make us pay higher bills???

Hi Dereton. I have a mains fed (25m) system, and still the hot water 'dribbles' out. Do you know what it could be?

I shut the main for about two hours, went for parts, came back to work on my sprinkler valve, did repairs and after turned main back on. On the following day, there was HOT LOW WATER PRESSURE THROUGH OUT THE HOUSE (hot tab always pressure perfect). What happened?

Recently my hot water taps started running slowly until it stops. At first I thought it was an airlock and I followed the steps in one of your other videos. That did not work so I called a plumber. My house is really old and the plumber told me it is rust in the pipes and I will have to get all the pipes replaced. This is the pipes in the walls.This does not make sense. If it's rust in the pipes inthe walls then surely hot water should run form at least one of the taps because the pipes split in the roof to go to the bathroom and kitchen. When I open a tap the water runs for a bit and then slows down and then stops completely. This seems to be the only explanation for the problem I am having.

Hey sir, never say never! On my side of the pond both the hot and cold pipes are at the top of the tanks! What you have said about the blockage makes sense. I will have to do something about that. Although with the emergency pressure relief valve I should not have a bomb in an over pressurized tank! Cheers!