Ideal Logic Plus 30kw Combi Boiler [Review], Or Worcester 30i?

Ideal Boilers is a thriving UK boiler manufacturer that now produce 6,000 boilers per week. And the Ideal Logic Plus 30kw combi boiler is one of the most popular in their whole range. Today we’ll discuss the Ideal Logic Plus in detail, comparing it directly to the equivalent Worcester boiler.



Here’s What You Need to Know

The Logic Plus range we are about to review is not to be confused with the standard Logic range (known as the Ideal Instinct range in some plumbing merchants).

The standard Logic only comes with a 2-year warranty. You definitely want to fork out the extra for the Plus model and grab that extra warranty.

The Logic Plus range boasts a no hassle 7-year warranty. Better still, it’s A-rated, ErP compliant and offers over 91% efficiency (which means it’s on par with the equivalent Worcester Bosch boilers).

Price Compared To The Worcester Bosch Greenstar 30i

Whether you are looking at an Ideal, Vaillant, Baxi or even Vokera review, every boiler is compared with a Worcester. Branding!

The equivalent Worcester used to be a 28i Junior (24i Junior when comparing the Ideal 24kw). But the Junior range was discontinued and has been replaced by the Worcester Bosch Greenstar 25i (Logic Plus 24kw equivalent) and the Worcester Bosch Greenstar 30i (Logic Plus 30kw equivalent).

What They Cost

Logic 30kw Plus: £800-850 including VAT (boiler only)

Worcester Greenstar 30i: £1,000-1,050 including VAT (boiler only)

You can compare prices for the Ideal Logic Plus 30 and the Worcester 30i here, in less than 90 seconds.

Other Cost Considerations

To get Worcester’s full warranty, you’ll need to purchase their own brand controls and system filter. We documented that here. But the flues and flue accessories are also slightly more expensive than Ideal Boiler’s.

What this equates to in terms of extra boiler installation cost, own branded controls and filter, flue/flue accessories and extra labour, is approximately £300 extra for a Worcester boiler over an Ideal Boiler.

However, Bosch have recently invested in online boiler installation company, BOXT. Naturally, with the backing from Bosch, BOXT are one of the most competitive companies when it comes to installing Worcester boilers. In fact, using a local installer for an new Ideal Logic Plus, will be comparable in price when using Boxt for a Worcester 30i.

To compare directly, you can get multiple quotes for a Logic Plus from Boiler Guide’s network of installers here. That’s going to involve a home visit.

Then, you can jump onto BOXT. Using their 90 second clickable form, you’ll get a price on screen. Quotes will vary depending on the answers you give on the form, but here’s the price we just got:

Ideal Logic Plus Additional features

  • Backlit display with easy to see pressure gauge.
  • Never miss a boiler service with their newly built-in service indicator.
  • Reduced mechanical parts for extra reliability (using top brand components such as Honeywell)
  • Compatible with a huge range of additional controls.
  • Frost protection technology built in that reduces the probability of a breakdown.

Suitable Property Size

The Ideal Logic Plus 30kw combi boiler is suitable for mid-range properties. So, we are talking about 3-4 bedrooms with 1-2 bathrooms and not excessive demand for hot water (i.e. not 2 showers and a tap on at once).

Smaller properties are going to be suited to the Ideal Logic Plus 24kw and larger properties will be more suited to the Ideal Logic Plus 35kw.

Combination boilers heat hot water on demand, so output is extremely important (speak to your engineer if you are unsure which size is suitable for your property).

If your property has more than 2 bathrooms, or excessive demand for hot water, it’s likely you’ll need either the Logic Plus 35kw combi or a system boiler.

Suitable Installation Area [Awesome Compact Design]

Most other brands produce a compact range (Worcester has the CDI Compacts for instance) which are designed for the sole purpose of fitting into a standard kitchen cupboard. The Logic Plus 30 boilers will fit into a kitchen cupboard as standard.

Here’s the spec sheet from Ideal:


You’ll be getting a 7-year standard warranty with the any Logic Plus boiler. We’d always suggest heading for a boiler that gets a 5-year warranty or higher, so there’s no problem there.

However, you can get a Worcester 30i with a 10-year warranty at a similar price via BOXT. Essentially, you’re getting 3 years extra warranty for free!

Controls and Accessories

24 Hour Mechanical Timer

Ideal offer a range of controls for the Logic Plus 30kw combi boiler such as a 24 hour mechanical timer. This is a simple but functional plug-in and play option.

Radio Frequency Electronic Programmer

This 7 day programmer is simple to use but has some complex features. Users can control both the heating and hot water from a single dashboard.

Other features include:

  • Holiday mode
  • The ability to set the boiler to pre-heat at a certain time

Outdoor Sensor

This cool little product will monitor the temperature of the air around your property. As the temperature adjusts, it will adjust the flow temperature of water in your home. So, your heating is perfectly balanced at all time.

Tests have shown that an outdoor sensor has managed to improve efficiency by around 2%.

Flues and Flue Accessories

Like all boiler brands, vertical and standard flues are available from Ideal.

If your flue is likely to be close to a neighbours’ (or your own) window, you can utilise Ideal’s plume management kit which allows the installer to extend the flue.


For the 30kw Logic Plus boiler, the most important specifications are:

  • 30.3kw domestic hot water output
  • 24.2kw central heating output
  • 12.4L per minute flow rate
  • The Logic 30kw & 35kw can be converted to LPG (the 24kw cannot)


The whole Ideal Logic Plus range offers excellent value for money. Our experience from supplying and installing this range has been extremely positive.

It used to be that the Ideal Logic Plus was the favorable option in comparison to the Worcester 30i, mainly due to price. However, since Bosch now own part of BOXT, Worcester boiler installation is available cheaper than ever before.

So, we’d be heading straight for the Worcester 30i, with up to 10-years warranty from BOXT. You can get your price here.

Still stuck on buying a Ideal Logic Plus? You’ll get a 7-year warranty, with prices comparable to the 30i, and can get quotes from local installers using this form.

What’s Next?

Thanks for reading our guide to the Ideal Logic Plus. Still got questions? Drop us a line through our contact page and we’ll do our best to help you out.


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