Hot water cylinder problems

Do you have hot water cylinder problems?

Herofix are here to help you to fix or diagnose the issue in as little as 15 minutes.

Save time and money and fix the problem yourself with our guidance

We have experience with all makes and models of cylinders

Instant calls - connect with a plumber within an hour

Fix or diagnose your cylinder problem in a Jiffy!

Around 70% of plumbing problems can be solved within 15 minutes

Maintaining your hot water cylinders

Hot water cylinders or Unvented hot water cylinders suffer from wear and tear. Here are some of the most common issues:

  • Hot water cylinder thermostat problems – This can result in no hot water, cold water or water discharging out of the tundish.

  • Unvented hot water cylinder problems – Unvented cylinders have more components than gravity cylinders. Combination valves, expansion vessels, pressure relief valves and immersions can all leak and fail.

  • Immersion heater thermostats tripping – Quite commonly, the whole immersion needs to be changed, although they can be reset and the thermostats changed quite easily if performed safely.
  • Leaking hot water cylinders – unfortunately, they do not last forever but can be repaired.

Need help fixing your hot water cylinder problem?

How can we help with your hot water cylinder problem?

Book a video call with an experienced professional to fix or diagnose your problem instead of waiting for a plumber to arrive.

Save time

Save money

Less plumber travelling time – better for the environment

Quicker way to diagnose the problem

Book a call at your convienence

Why choose us?

You might be wondering why you would use us and not just call out a plumbing engineer to your home, let’s help answer that for you…

Live guidance and support when you need it.

Around 70% of plumbing and heating problems can be solved within 15 minutes, typically by performing a very basic action. With the right guidance and support, anyone can be a hero.

Save time, money and be more eco-friendly.

Plumbing and heating companies can charge anywhere between £60 – £250 for one call-out, before they’ve even fixed the problem.

You only need to spend £15 with us, not only will you be saving money, you’re also contributing to a greener planet by avoiding a plumbers journey in a van.

Find out what our customers say


Great service!

Couldn’t recommend the HEROFIX more! They managed to fit us in at incredibly short notice for a video consultation. Son was incredibly knowledgeable and friendly.

Not to mention, this video appointment was free of charge due to my girlfriend working in the NHS.

SMC from London

Quick and very effective

Really great service and extremely useful in the current climate. My issue was resolved quickly and would use again.

Anonymous from Manchester

Sensible and Simple Advice

Had been worrying about certain aspects of my heating and gas flue for a while. Son gave me excellent advice which has set my mind at rest. It was so simple and he explained things to me in easy to understand terms. Would definitely use them again.

Helena from Lewisham

An experienced team of certified pumbing engineers

Providing no-obligation advice to help you resolve your plumbing problem

Frequently asked questions

If the cylinder is leaking from the actual main body of the cylinder, it is most likely it needs replacing. If a component is leaking, then it could probably be repaired.

Yes, limescale is very bad for them, as it is for all of the plumbing of your home. Some cylinders come with a sacrificial anode, which is good at protecting your hot water system.

Copper gravity hot water cylinders can last for 40-50 years! Steel unvented cylinders come with 25 year guarantees. So a long time.

plumbing of your home. Some cylinders come with a sacrificial anode, which is good at protecting your hot water system.

Who are Herofix®?

The first step of solving a plumbing or heating problem in your home should start with a video call with an experienced professional.

They can explain the skills and give you the knowledge of how to fix a problem yourself. If the problem can not be fixed with your hands, then they should be able to diagnose the issue and give you directions for what to do next.

The aim is to save you time and money. By jumping on a video call within the hour, you’ve saved the time of waiting for a plumber to arrive and potentially avoided an unnecessary call out.

At a fraction of the cost of a plumbers first hours labour charge, you could have fixed the heating problem or diagnosed the problem saving big money.

Need a plumbing or heating engineer?

Save time, money and the environment by booking a video call with a plumber at a convient time for you