Energy Efficient Gas Boiler Installation & Replacement

Benefit from long term energy savings with an A rated gas boiler

Boilers account for over 50% of what we spend each year on energy bills. So, a more efficient gas boiler will make a big difference to your energy costs.

At Infinity Energy we install the latest energy efficient gas boilers for your home. From combi boilers to system and conventional boilers, we’ll install the ideal boiler to match your exact needs.

All the boilers we install are ‘condensing’ boilers, from leading brands and meet the highest efficiency specifications, great news for your energy bills.

Benefits of condensing boilers include:

  • Higher efficiency (typically greater than 90%)
  • Lower energy bills
  • Reduced carbon footprint
  • Finance available

Tell-tale signs you need a new boiler or a boiler replacement

An inefficient or old boiler could cost you more to carry on using it than it would to replace it.

If your boiler isn’t working as well as it should be, or if you notice any of the following signs with your boiler, it could be worth installing a new one before it stops working completely, leaving you without hot water or heating.

Rising energy bills

  • When a boiler is old, it loses its efficiency, meaning you’ll have to pay higher energy bills

Heating up takes longer

  • Modern boilers should produce heat instantly
Energy Efficient Boilers
Energy Efficient Boilers

Continual breakdowns

  • Paying for replacement parts and call out charges quickly mounts up


  • Unusual boiler noises can signify a broken valve, pump problem or general wear and tear

Flame in your boiler is yellow

  • This can be a sign that the boiler is leaking dangerous carbon monoxide and should be checked out by a certified gas safe engineer

Reduced pressure

  • This could be due to a leakage in the system or when air escapes through a valve


  • A water leak from your boiler could cause damage to your home and other parts of the boiler

Why choose Infinity Energy for your energy efficient gas boiler installation?

We have a great track record in installing renewable energy, heating and cooling systems:

  • A-rated, highly efficient gas boilers
  • Installed by one of our expert Gas Safe registered engineers, plus free removal of your old boiler.
  • Over 10 years of satisfied customers – contact us for references
  • 100s of installations across Hampshire and the south-east
  • Excellent independent Checkatrade rating of over 9.7 out of 10
  • Fully qualified in-house team of engineers
  • Unrivalled customer care – before, during and after installation
  • Very competitive prices and friendly service
Vaillant Gas Boiler
Energy Efficient Boilers

Where do we install?

We install principally in Hampshire, Dorset, Wiltshire, Berkshire, Surrey and West Sussex.

Towns and cities we typically cover include Southampton, Portsmouth, Eastleigh, Gosport, Farnborough, Andover, Aldershot, Horndean, Winchester, Havant, Locks Heath, Fareham, Fleet, Totton, Hedge End, Stubbington, Hythe, New Milton, Emsworth, Alton, Petersfield and Romsey.

Get in touch for a new quote

Are you ready to start a conversation about a gas boiler replacement for your home?

Call 0800 909 8882

for more in formation, or contact us online

A new boiler is affordable too

Infinity Energy Services Limited is an Introducer Appointed Representative of Phoenix Financial Consultants Limited (“Phoenix”). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (Financial Services Register No. 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.

A new boiler is affordable too

Infinity Energy Services Limited is an Introducer Appointed Representative of Phoenix Financial Consultants Limited (“Phoenix”). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (Financial Services Register No. 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.

Types of gas boilers available

There are three boiler options available to choose from: a combi boiler, a conventional boiler or a system boiler. Find which one is right for you and your home.

Energy Efficient Boilers

Combi Boilers

Combi boilers are very cost effective and handle both the hot water and central heating in your home.

With a combi boiler you won’t need a water storage tank or cylinder, freeing up space in your loft as a combi boiler heats water directly from the mains, giving you instant and unlimited hot water on demand, whenever a tap is turned on.

  • Highly energy efficient
  • No waiting time for hot water and central heating
  • Compact choice for homes with less space, can even fit in a cupboard
Energy Efficient Boilers

Conventional Boilers

Conventional boilers (also known as regular boilers or open vent boilers) provide both the hot water and heating to your home through the use of a cold water tank and a hot water cylinder.

Conventional boilers can provide large volumes of hot water to multiple bathrooms, so are worth considering in households if there are several people in your home who are likely to require hot water all at the same time.

  • Able to supply water to multiple bathrooms at the same time
  • Great for homes in areas with low water pressure
Energy Efficient Boilers

System Boilers

For homes with more than one bathroom, a system boiler could be the perfect choice.

More compact than a conventional boiler, a system boiler requires a hot water storage cylinder, but not a water tank in the loft. As the water is supplied directly from the mains, they not only require less storage space, but are also able to deliver water at a consistent high pressure.

  • Economical running costs
  • Great for high hot water demand

What gas boiler brands do we install?

We can install all the major brands available in the UK. The main manufacturers we work with include:

Worcester Bosch

Consistently recommended by Which? Worcester Bosch are the UK’s market leader in domestic boilers, with a commitment to the highest standards of manufacturing.

Vaillant first pioneered the ‘combi’ boiler over 35 years ago, and are proud to be leading the way today in renewable technologies, developing systems which utilise sustainable sources of energy.

Glo Worm Infinity Energy

Glo-Worm have produced reliable heating and energy products for over 80 years, and are one of the pioneers of heating solutions in the UK.

Viessmann Infinity Energy

Viessmann offer world-renowned heating solutions delivering high efficiency and exceptional performance, helping homeowners to enjoy lower energy bills and reduce their environmental impact.

The benefits of switching to a new gas boiler

A new energy efficient gas boiler has many benefits including:

Cosy home

A warmer, more comfortable home

An old boiler can struggle to heat your home effectively – switching to a new gas boiler can help create a warmer and more comfortable environment to live in.

Energy Bill

Reduce your energy bills

Boilers become less efficient the older they get, resulting in higher heating bills. A new, more efficient gas boiler will lower the cost of your heating.

A Rated

Energy efficient

Changing to a modern A rated gas boiler could help you save up to £195 and 1,500kg of carbon dioxide per year.

Consistent temperature

Control of temperature

New gas boilers can allow the user to set the desired temperature, so you can be far more precise with how much heat is required for each area of your home.

Up to 12 years warranty included

All the boilers we recommend and install come a warranty of at least 7 years, and some like the innovative Worcester Bosch lifestyle series come with an incredible 12 year guarantee, giving you total peace of mind for many years to come.

12 Year Warranty
Infinity Customer

What do our customers say?

Our success as a company depends entirely on how happy our customers are. With over 10 years’ experience designing and installing systems in the south of the UK, our Hampshire based engineers put all of that knowledge into every project we are involved in.

Here is some feedback from a recent customer:

“Excellent service, very professional, very polite and positive approach tradesmen. Well recommended.”

Our other specialities are Solar Panels, Battery Storage, Heat Pumps and Electric Car Chargers.

Annual Boiler Service

Having your boiler serviced once a year by one of our Gas Safe registered engineers ensures that you:

  • Maintain your manufacturer’s guarantee
  • Can avoid more expensive future repairs if problems are spotted early
  • Save energy as our engineer will check your boiler is running as efficiently as it should be
  • Increase its life expectancy
  • Maintain that your boiler is safe
Boiler Service Infinity Energy Services


Ready to take the next step?

Are you ready to start a conversation about installing a new gas boiler?

If you would like to begin a no-obligation conversation about an energy efficient gas boiler, phone us now on 0800 909 8882, send an email at [email protected] or use our dedicated online form.


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