Thread: hot water pressure

Originally Posted by ledwards

We have a problem with our hot water having pressure,

That is a problem.

There should be a tap attached to the unit. If you turn the tap off, then it will stop all the water pressure.

If you have a small instantaneous heater eg a bosch 10 B (water wizard)or something you will have less flow through it during cold months. maximum is going to be 9l/m tho. if its not getting worse and hasn't developed in 24hrs i'd leave it till summer and see if it improves, If it does then you want ( don't need ) a bigger unit.

Most likely it would be a partialy blocked inlet to your hot water system. This could be at the tempering valve(if you have one)(they have a small filter), or the duo valve(inlet tap).
On most hot waters there are filters to stop any cr-p getting into your system.

All of the above, could also be the piping, if it is all done in 1/2" that can pose pressure dramas, as the other fellas said, the little instantaneous electric ones work on a flow rate, the slowwer the flow through the heater the hotter water you get. The check valves in tempguards will play up if the slightest bit of crap gets through the strainer, which incidently will clog up very easily. The check valves in new RMC tempguards are a simple rubber flap, easily removed and cleaned. Duo valves play up, or an older swing check which can get stuck, not to mention the faithful old pressure limiting valve that calcifies and plays up.

Originally Posted by ledwards

We have a problem with our hot water having pressure, We are wondering if we have to replace the hot water heater and will this actually fix the problem?

You need to provide more info ledwards. I think you are trying to say that the system is building up a lot of pressure? If so, it could simply be a stuck pressure relief valve.

Originally Posted by bricks

i'd leave it till summer and see if it improves, If it does then you want ( don't need ) a bigger unit.

If they really are in Texas then it probably is pretty warm now.

Is there too much pressure or not enough? Is it an instantaneous or tank (gravity or mains pressure) How old is the unit? Was it ok before and now running low? It could be anything from poor supply to a stuck valve or failing diaghragm.
Its hard to say what the problem might be without more specific information.
Expect to pay anything from $100 -150 per hour plus parts for a plumber to sort it out. Good luck.

It could be your taps you know, all of them these days are fitted with water restricted filters. Unscrew your shower head and look for a white filter (kinda looks like a strainer for pasta ) Drill a hole through it or just take it out if you can.