The Ideal Logic C30 Combi Gas Boiler Re February 6, 2023

The Ideal Logic C30 Combi Gas Boiler

ideal boiler image

What is an Ideal Logic C30 combi gas boiler?

Are you in need of a new boiler? What better time to buy a new or replacement boiler than the summertime, when the worry of needing central heating in your home is taken off your shoulders. 

The blog aims to discuss Ideal’s best-selling boiler model, the Ideal Logic Combi C30. We will be discussing its features, price, warranty, compatible controls and comparing it to the new Worcester Bosch Greenstar 4000. 

If you are interested in reading more about our battle of the boilers, we have a series of blogs including, the Ideal Logic Plus S30 vs Alpha E-Tec 30SWorcester vs Viessmann and Worcester vs Vaillant.

If this blog sounds like something you would be interested in, grab your cuppa and let’s go!

Ideal offers a wide range of combi, system and regular (heat only) gas boilers, however, this article aims to focus on one of Ideal’s best-selling combi boilers, the Ideal Logic Combi C30.

If you are interested in learning more information about the different Ideal boiler models, we have a guide covering all Ideal CombiIdeal Systems and Ideal Regular boilers. If you aren’t sure what type of boiler you have, then we’ve got you covered there too. 

Before we delve into the details about the Ideal Logic C30, here’s some information about Ideal Heating themselves. 

About Ideal Heating

Ideal boilers were founded in 1905, giving them over 100 years of experience in delivering boilers to homes throughout the U.K.

Ideal is one of the pioneers in bringing high-efficiency boilers to market and they continue to bring reliable, efficient boilers to market to this day. 

One of the first modern-day boilers was brought to market by Ideal in 1920 and known as the Cookanheat. The Cookanheat was a freestanding stove that combined an open fire, central heating boiler, cooking oven, and hot cupboard.

Ideal has come a long way from the Cookanheat, offering a range of combi boilers that offer high efficiency at a very reasonable price.


In terms of where Ideal are placed in the boiler market, they are classed just above a budget brand. Their prices are that of a budget boiler but the product and the aftercare are that of a more premium brand. Like-for-like, they won’t outperform a Worcester Bosch or Viessmann boiler, but you will save a few pounds if you opt for an Ideal boiler. If you are interested in finding out how the Ideal Logic C30 Combi compares to Worcester Bosch’s latest edition, the Worcester Bosch 4000, we will be comparing both at the end of this blog, so stay tuned!

Ideals’ goals are laid out in their mission statement on their website:

“Ideal Boilers is dedicated to providing a reliable, competitively priced product range, and delivering incredible customer service to all of its installers and consumers first time, every time.”

No description of Ideal boilers would be complete without mentioning their plucky mascot, the imaginatively named ‘Boilerman’. Starting off as a bit of a laugh, people have taken quite a shine to the comedy mascot, he even has his own Twitter handle now – @IdealBoilerMan. 

Ideal has a number of awards under their belt, including the Good Housekeeping Reader Recommended Award for the last three years. 

Ideal also has over 6k boiler reviews on Trustpilot, with an average trust score of 4.7 out of 5, which is a really good score, meaning their customers are generally really happy with the service they receive.

In addition to this, according to the Which? Best Boiler brand survey 2020, Ideal heating scored an overall 69% for brand scoring. The total Which? score is based on reliability, owners’ satisfaction with their boiler, the likelihood of them recommending it to a friend, plus the detailed views of heating engineers on how easy Ideal boilers are to repair and service, their build quality, how easy it is to get hold of parts and spares and whether engineers would recommend them to a customer.

Which? Best Boiler Brand Survey Results for Ideal Boilers  

Brand reliability rating

5 stars

Brand customer score rating

4 stars

Ease of fixing a common fault

4 stars

Ease of servicing 

4 stars

Availability of parts and spares

4 stars

Engineer recommendation

3 stars

Build quality 

3 stars

Their customer score was 4 out of 5 stars. Which? describes Ideal as having “a good reliability record, a good customer score, and our expert heating engineers rank it above average too”

Ideal has this to say of themselves on their website:

“Today, Ideal remains at the forefront of the domestic and commercial heating markets, leading the industry in setting new standards and challenging technological boundaries. Our company remains true to its founding principles of quality, innovation, and value – building on its rich heritage as we look to the future.” 

Now we know more about the background and success of Ideal Heating as a boiler brand, let’s get into why the Ideal Logic boiler range, predominantly, the Ideal Logic C30, is one of the best-selling combi boilers on the market. 

The Ideal Logic Combi Gas Boiler comes in 3 different output options. Despite them all having the same kW output of 24.2kW for central heating (CH), these boilers differ in their domestic hot water output (DHW), with the C24 offering 24kW output, the C30 offering 30kW, and the C35 offering 35kW. Each model also offers progressively higher flow rates.

Benefits of Ideal Combi-Boilers 

  • Ease of use – combi-boilers give you more control over the amount of energy you use
  • High energy-efficiency – Ideal combi boilers are rated A and help to reduce heating bills
  • Cost-effective – condensing boilers are competitively priced and offer good value for money
  • Instant hot water – combi-boilers heat water on demand in a matter of seconds
  • Affordable to buy and maintain – advanced engineering and simple design make combi-boilers easy to install and carry out maintenance thus reducing the engineer costs
  • Excellent warranty – Ideal combi-boilers come with a standard 2 or 5-year warranty. Premium models have either 7, 10 or 12-year guarantee

The Ideal Logic Combi C30

Ideal Logic with 8 year guarantee

Moreover, this article aims to focus mainly on Ideal’s best selling combi boiler, the Ideal Logic C30. 

The Ideal Logic C30 has an efficiency rating of 94% and an ErP A-rating for both central heating and hot water. This means that not only is this a highly reliable and efficient combi boiler, but it could potentially help to lower your energy bills. 

This combi boiler has been designed to be compact and lightweight, with a low-lift weight of 34kg. This allows for easy installation into your standard kitchen cupboard, out of sight, out of mind. 

Here are some other features of the Ideal Logic C30:

  • An easy to see pressure gauge
  • Backlit display
  • Compact cupboard fit
  • LPG conversion kit available
  • Wide range of additional flue options
  • Preformed copper tails and pre-wired mains lead
  • Boiler frost protection for extra peace of mind during the colder months
  • Built-in, easy to use filling loop
  • Simple diverter valve design
  • Fully modulating operation to low outputs
  • Automatic bypass
  • Universal condensate connection
Key StatsIdeal Logic C30 Combi
Dimensions (mm)Height: 700mm | Width: 395mm | Depth: 278mm 
kW OutputCH: 24.2kW | DHW: 30kW
ErP RatingA Heat | A Water 
Warranty2 years standard warranty
Energy Efficiency 94%

Which Ideal Logic Combi output is best for your home?

Before investing in a new or replacement combi boiler, it is useful to know what type, size and kW output are best suited to your home. 

If you purchase a boiler that is too powerful, you will be wasting money on your energy bills. Meanwhile, if you choose a boiler model that is not powerful enough for your home, you risk not feeling the benefit of your central heating system at all. If you are not sure what boiler is best for your home, we have a blog that covers this. As well as this, we have a blog that explains exactly what does a kW mean and what size kW you need in your home, and why it is important to understand when purchasing a new or replacement boiler. Although we have blogs that can help you decide what the best boiler is for your home, our simple online survey does it all for you, in only 90 seconds!

You can give it a try here –, the survey takes a couple of minutes to complete and we’ll give you an instant fixed price quote online.

Below is a simple table explaining the power behind each one of the Ideal Logic Combi boiler models. From this, we will analyse why the Ideal Logic Combi C30 is the most popular of the bunch. 

Ideal Logic Combi boiler model comparison table. 

Boiler Size24kW30kW35kW
Number of radiators

Up to 10 radiators

Up to 15 radiatorsUp to 20 radiators

Number of bedrooms


Flow Rate

9.9 l/min12.4 l/min14.5 l/min




2 years2 years2 years

* These prices were taking from Prices may vary depending on supplier, VAT and installation costs. 

So, why is the Ideal Logic Combi C30 the most popular boiler model in the range? Here are only a few reasons why the Ideal Logic C30 is one of Ideal’s best-sellers. 

  • It is made in the UK 
  • Compact in size (ideal for cupboards) 
  • Built-in frost protection
  • Large colour screen and easy 
  • Won Good Housekeeping Award 2018
  • Simple diverter valve design 
  • 10-year warranty on heat exchanger

If you’re looking to buy a new boiler then get a boiler quote from WarmZilla. It only takes two minutes, you don’t need to have any technical knowledge, and it’s all done online. What more could you ask for?

Ideal Logic C30 Warranty

The Logic range only comes with a 2-year standard manufacturer’s warranty, which is significantly less than other Ideal boiler models, such as the Ideal Vogue and the Ideal Max. However, if you purchase through us here at WarmZilla, all Ideal boilers come with 8 years guarantee. 

It is important to note that unless the warranty is registered within 30 days of installation, it becomes void. You must also have your boiler services annually for your warranty to be in use. 

Ideal Logic C30 Controls and Sensors

As well as efficient design, you can stay in control of your heating and hot water and save even more by using Ideal Logic’s innovative controls. 

These include the following: 

Halo Combi RF Wi-Fi Controls

  • 2 years warranty
  • Fast and simple to install – no wiring, simply plug, pair and play
  • Designed specifically to work with Ideal Boilers
  • Large, clear, colour screen
  • Easily adjustable schedule to fit with your lifestyle
  • Load compensation provides easy Boiler Plus compliance
  • Built-in frost protection 
  • Wireless connection
  • 7-day times controls

Weather Compensation Kit

  • Improves efficiency 
  • Provides a consistent temperature throughout the house
  • Removes the requirement for manual temperature setting after installation 
  • Provides cost savings
  • Reduces risk of premature failures

Ideal Logic C30 vs. Worcester Bosch 4000

Before we go into detail comparing the Ideal Logic C30 with the new Worcester Bosch 4000, here’s a little more information about the history of Worcester Bosch. Formed in 1962, Worcester started off as a small business in the small village of St. Martins Gate. The company was then renamed in 1992 to what we know today as Worcester Bosch, due to an acquisition by Robert Bosch, and are now known as the market leaders of boilers in the UK. With a trust rating of 4.6 on Trustpilot and over 23,000 reviews, and ranked number 3 of 7 in the Boiler Manufacturer category, Worcester Bosch boilers are renowned for their reliability and efficiency. In the 2020 Which? Best Buy annual Best Boiler Brand survey, over 7,500 boiler owners and 153 boiler engineers from Which? Trusted Traders were asked to score Worcester Bosch boilers. Worcester bosch received an overall score of 79%. Worcester Bosch is known for being a highly reliable and efficient boiler brand, with guarantees of up to 10 years on all their boiler models, for extra peace of mind. Below is a comparison table, comparing both Ideal’s best selling boiler, the Ideal Logic C30 against the Worcester Bosch Greenstar 4000. Comparison Table
MakeIdealWorcester Bosch
ModelLogic Combi C30Greenstar 4000 30kW
Condensing BoilerYesYes
LPG CompatibleYesYes
Standard Guarantee2 yearsUp to 10 years
Central Heating Output30.3kW30kW
Flow Rate12.4 l/min12.3 l/min
Dimensions (mm) (HxWxD)700 x 395 x 278710 x 400 x 310
After taking a close look at both boilers, it can be said that Ideal Logic C30 and the Worcester Bosch Greenstar 4000 could both equally be a great choice for a small to medium home with up to 15 radiators and a main bathroom. Both boilers provide a similar flow rate, meaning that both combi boilers will ensure a consistent flow of hot water to your home. Both boilers are similar in size and could fit neatly inside your standard kitchen cupboard. The standard manufacturer warranty for an Ideal boiler is 2 years, however, as mentioned, when purchased with us as Warmzilla, you will receive 8 years guarantee on all Ideal boilers. However, the extra 2 years guarantee, the quality and reliability associated with the Worcester Bosch brand could sway some homeowners to choose the Greenstar 4000, whilst the awards won by Ideal for the Logic range could provide some property owners with the reassurance they need to make the C30 their choice. We could be looking at a very strong competitor with the new Greenstar 4000. However, this boiler is not yet for sale on the market and the price could be the deal-breaker. Ideal boilers are often referred to as a more cost-friendly boiler brand, whereas, Worcester Bosch boilers are more pricey. If you would like more information about the Worcester Bosch Greenstar 4000, we have a blog all about it!
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