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Last updated: 20th December, 2022


Emergency Boiler Replacement

Emergency Boiler Replacement

Key takeaways

  • Gas leaks, no supply of hot water or a serious leak all constitute a boiler emergency.
  • National Gas Emergency Service number - 0800 111 999.
  • iHeat carry out time efficient and accurate online boiler assessments.

Lets explore the process of assessing and replacing an older, antiquated broken down appliance with a brand new top of the line boiler.

When a boiler stops working it can be a shock to the system, causing panic and stress for homeowners as an integral part of their property, that they rely upon for warmth, ceases to function.

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What Constitutes An ‘Emergency’?

Any boiler issue is obviously important to get remedied as soon as possible, but in a triage system of urgency, some issues take precedence.

You can consider any of the following an emergency boiler matter:

  • Suspected gas leak (natural gas or carbon monoxide)

  • No heating or hot water during winter (especially important if you have children in the home)

  • Water is streaming out of a boiler or pipe at a very quick rate

Possible Symptoms of Carbon Monoxide Poisoning:

  • Headaches

  • Dizziness

  • Nausea and vomiting

  • Tiredness and confusion

  • Stomach pain

  • Shortness of breath

  • Confusion

  • Irregular heartbeat

  • Seizures

Unfortunately, small gas leaks often do not have a smell or other physical signs, which means they can go undetected for a long time.

However, after a while you may notice signs such as a sulphur or rotten egg smell, hissing from a gas line, a damaged gas pipe or dead houseplants.

Or if you notice the small flame as seen through the viewing window on older boilers is yellow instead of blue, this could be a gas leak indicator.

Undetected gas leaks also pose the potentially lethal risk of gas ignition explosions, this is when a leaking gas source combines with the air and an ignition source (e.g lighter flame) to cause an explosive and violent combustion.

What To Do If You Think you Have A Gas Leak

If you suspect your property has a gas leak it is crucial to carry out these steps:

  1. Ensure all people and pets are evacuated from the house.

  2. Leave doors and windows open.

  3. Turn off the gas at the mains tap- this can usually be found near the gas meter.

  4. Immediately call the National Gas Emergency Service number on 0800 111 999 as soon as you have evacuated the house.

  5. Do not turn any power or light switches on or off.

  6. Do not light any sort of flame within the property.

  7. Do not use any appliances that could cause a spark.

Boiler Replacement Costs

Even in the event of a boiler issue not deemed an ‘emergency’, you can still contact an engineer for a call out if you believe it’s required, however the 24 hour rate will be down to that engineer or firm’s labour and expertise pricing but you can expect this will be around 30% above normal day rates.

Things To Note About Boiler Replacements

Regular boiler companies will first have to send an engineer for an on site assessment, potentially allowing the situation to further deteriorate as time elapses, also it may prove prudent to contact and compare price quotes for any emergency boiler replacements.

Remember to fully document and authenticate prices before committing to any work being carried out to avoid disputes about the service costs down the line.

Sound like a lot to bear in mind while your boiler crumbles?

Here At iHeat, We’re Different!

As a modern, online boiler installation company, iHeat will take away the burden of all of the above to make replacing your old broken boiler as easy as possible.

First of all, Instead of carrying out potentially disruptive and delaying location assessments, at iHeat we aim to make the quotation process as quick and efficient as possible. 

After answering some simple multiple choice questions regarding your current home heating system, our iHeat quote software algorithm rapidly and accurately determines which boilers would be ideal for your property. 

With our fixed price guarantee on quotes for any boiler installed, there's no need to worry about confusing cost changes or miscommunication, the iHeat process couldn't be any clearer.

Gas Safe Engineers

All of our iHeat engineers are fully qualified and Gas Safe registered to boot, meaning only experienced professionals will be carrying out the work on your property.

Consider A Combi Boiler

What Is A Combi Boiler And What Are Their Benefits?

Combi (combination) boilers link a home’s central heating system and water heating into a single unit, with all components integrated within the boiler. 

The combi signals a sensor upon hot water demand, then takes water directly from the mains and the heat exchanger heats it for distribution to water outlets. This means there's no accompanying cylinder or hot water tank.

This allows a compact boiler which could fit into a standard kitchen cupboard or be wall mounted, to thoroughly heat a home without stealing lots of space. Combi systems are also easier to service or for boiler replacement due to their popularity, meaning greater availability.

Another great benefit of a combi boiler is its efficiency. By heating water on demand as opposed to constantly heating stored water, you can save energy and cut costs on your fuel bills. A new combi boiler should be around 90% efficient, so replacing your old boiler could save you up to £445 according to The Energy Saving Trust.

Age of Boiler

Efficiency Percentage

Efficiency Rating (ErP)

0+ Years

90% +


10+ Years

85% +


15+ Years

80% +


20+ Years

70% +


25+ Years

60% +


The direct correlation between a boiler's age and its efficiency is clear to see in the newer systems’ ErP. 

iHeat’s Boiler Replacement Reputation

One of our primary concerns as an online boiler installation company is the experience and satisfaction of our customers, that’s why we’re happy to boast about our 4.9/5 Trustpilot rating, deemed ‘Excellent’ overall from a total of nearly 5,000 reviews!

As you can see we’re not all talk here at iHeat, we use our wealth of knowledge and skill to make sure you're happy with all aspects of your boiler replacement or install.

Be Proactive With iHeat

The best way of ensuring your boiler is operating as it should, is by proactively replacing ageing or faulty boilers at the earliest signs of degradation, this preventative step is far more prudent than reactive maintenance.

It’s a mechanical and engineering fact that due to some of the technological advancements in recent times, modern boilers are more robust and efficient than anything made previously.

Get a free online fixed price quote on any of our sleek boiler ranges, with 0.% APR available on selected models, and a price match guarantee, Why wait? Contact us Today.

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