Are Ideal combi boilers any good?
Yes, for most homes. Ideal Boilers Ltd builds the range in Hull, the Logic models are published at 94% seasonal space heating energy efficiency, and the Max models carry 10 and up to 12 year parts and labour warranties. The hardware is rarely the problem. The conditions attached to that long warranty are.
What Ideal does well
- Built in the UK. Ideal builds the range in Hull and says on its Logic Max Combi product page that “Our products are proudly made in the UK”.
- Genuinely efficient. Ideal publishes an A efficiency class for the Logic Max Combi2 and the Logic Combi ESP1.
- Long warranties on the Max models. 10 years parts and labour on the Logic Max Combi and up to 12 on the Vogue Max Combi, each “available when registered within 30 days of installation and serviced annually”.
- Filter included on Max models. The Ideal System Filter comes in the box, and it keeps corrosion debris out of the boiler.
Where Ideal is weaker
- Not every Ideal gets a long warranty. Ideal’s Logic Combi ESP1 specification sheet publishes a 2 year parts and labour warranty, with 10 years on the heat exchanger when it is installed with an Ideal System Filter. Check which model you are quoted.
- The headline 12 years has an extra string. Ideal’s Max Confidence terms give the full term “in the case of a Vogue MAX, installed by a MAX accredited installer”. Fitted by anyone else, plan on 10.
- Sludge and limescale are excluded, along with faults caused by the design and maintenance of the wider heating system. Those are ordinary reasons a boiler stops working.
- The top of the range is not the more efficient one. The Vogue Max Combi is published at 92.7% to 93.1%, below the Logic’s 94%. The Vogue buys you build, display and warranty length, not efficiency.
The Ideal combi boiler range
Ideal lists four combi families for homes. The Logic models are Ideal’s mainstream range; the Vogue models sit at the top with a colour display and a longer warranty. Every figure below comes from Ideal’s own product pages and specification sheets.
| Range | Models | Max hot water flow (35°C rise) | Warranty published by Ideal |
|---|---|---|---|
| Logic Combi ESP1 | 24, 30, 35 kW | 9.9 / 12.4 / 14.5 litres per minute | 2 years, 10 on the heat exchanger with an Ideal System Filter |
| Logic Max Combi2 | C24, C30, C35 | 9.9 / 12.4 / 14.5 litres per minute | 10 years |
| Vogue Gen2 Combi | C26, C32, C40 | 10.6 / 13.1 / 16.4 litres per minute | 8 years, or 10 years when fitted with an Ideal System Filter |
| Vogue Max Combi | C26, C32, C40 | 10.6 / 13.1 / 16.4 litres per minute | 10 years as standard, 12 via a MAX accredited installer |
Those C numbers are Ideal’s model codes and they track hot water output, not central heating output, so do not read a C26 as 26 kW of heating. If your current boiler is an Ideal Logic+ Combi, Ideal lists it in its warranty guide at 7 years, with 10 years on the heat exchanger.
What does an Ideal combi boiler cost?
Ideal does not publish a price. Its product pages carry specifications and warranty terms and no retail figures at all, because Ideal sells through installers and merchants rather than direct to homeowners. This page used to carry estimated prices and we have removed them, because we could not trace them to anything Ideal publishes. The only number that means anything is the installed quote, and most of that quote is not the boiler.
When you compare quotes, ask each installer to itemise the exact model and output, the flue route and any extra flue parts, whether the Ideal System Filter is included (it is on Max models, not on the entry-level Logic), the controls, and the annual service. On a Max model Ideal requires the boiler and its included filter to be registered together for the full term, so an installer who skips the paperwork has just cost you years of cover.
If you are weighing a new boiler against repairing the one you have, read our new boiler guide, or ask us for a callback. We do not sell or fit boilers, but we will talk the repair-or-replace decision through with you without a sales script.
What size Ideal combi boiler do I need?
Sizing is your installer’s job, worked out from the property’s heat loss and your hot water demand, and by law the work has to be theirs: the Health and Safety Executive states that “Anyone employed to work on gas appliances in domestic premises must be a Gas Safe registered engineer and competent in that area of gas work.”
What you can do is compare the right number. For a combi, hot water flow rate matters more than kilowatts, because a combi heats water on demand and never stores it. The figures are in the table above.
Two caveats. Those flow rates assume your mains supply can feed them, because Ideal publishes them at a stated inlet pressure, so ask your installer to measure the flow at the kitchen tap first. And a combi shares its flow between outlets, so if your household regularly uses two bathrooms at once, read combi vs system boiler before you commit to any combi.
Warranty: the rules that catch people out
Ideal’s warranties run from 2 to 12 years depending on the model, and every one is conditional. These conditions come from Ideal’s own standard warranty terms and its Max Confidence terms:
- Register within 30 days. Miss it and “the period of warranty will extend to only 12 months from installation”. On Max boilers, “both the boiler and included system filter need to be registered simultaneously”.
- Service it every year, using a Gas Safe registered engineer. Miss one and, in Ideal’s words, “the boiler warranty will lapse”.
- Keep the Benchmark sheet, which must be “completed by the installer and left with the boiler”.
- Correct installation, within 12 months of manufacture, by a Gas Safe registered installer following Ideal’s own booklet. The Vogue Max’s extra two years need a MAX accredited installer.
The warranty also excludes “de-scaling or other work required as a result of hard water scale deposits or from damage caused by aggressive water or sludge resulting from corrosion” and any fault “caused by the design, installation and maintenance of the central heating system”. It covers the box on the wall, not your radiators or your pipework.
If your boiler is still in warranty, call Ideal, not us. Ideal’s consumer number for breakdowns is 01482 498660, and its contact-us FAQs publish working times of 8am to 6pm Monday to Friday, 8am to 4pm Saturday, 8am to 12 noon Sunday, and 8am to 4pm on Bank Holidays. There is no sense paying anybody for a repair Ideal will do free, and our guide to Ideal boiler warranties covers registration and transfers.
What goes wrong with Ideal combi boilers
The Logic Max Combi2 user guide lists what the boiler will report: overheat and ignition lockouts, flame loss, fan and pump faults, low water pressure, a blocked flue or condensate pipe, PCB and thermistor faults, low mains voltage and a room thermostat fault. Most are jobs for an engineer. Three are worth knowing about.
Low water pressure
The commonest and the least serious. Ideal’s user guide refers to an original installation pressure of 1 to 2 bar, and the cold target Ideal publishes is 1.0 to 1.5 bar. It also warns that “THE BOILER WILL NOT OPERATE IF THE PRESSURE HAS REDUCED TO LESS THAN 0.3 BAR”. Ideal’s homeowner instruction is to top up through the built-in filling loop with the boiler off and the system cold. Two numbers show up, and both are Ideal’s: the on-screen prompt says fill to 1.0 bar, while the printed filling-loop procedure says stop at 1 to 1.5 bar. If the pressure keeps dropping back you have a leak, and that needs an engineer rather than a weekly top-up. Our Ideal boiler pressure guide covers the filling loop step by step.
Blocked flue or condensate
Ideal’s guide tells the user to check whether the condensate pipe is blocked or frozen and whether the flue is blocked, then to contact the installer if the fault persists. This is the fault that fills engineers’ diaries in every cold snap. A cover plan excludes work caused by freezing, so a frozen condensate pipe is a one-off repair either way (cover plan T&Cs p.27, general exclusions).
Ignition lockout
Ideal’s guide says to check that other gas appliances work, restart the boiler, and if the fault persists, contact your installer. Restart it once. Repeatedly resetting a boiler that keeps locking out is how a small fault becomes an expensive one. Older Ideal boilers show a letter-and-number code rather than a written message, and our Ideal fault code list explains what each one means.
Safety first. Only a Gas Safe registered engineer may work on a gas boiler. Never remove the casing and never attempt a gas repair yourself. If you smell gas or suspect a leak, turn the gas off at the meter if you can reach it safely, open windows and doors, do not touch electrical switches, and call the National Gas Emergency Service on 0800 111 999 straight away. You can check any engineer’s registration on the Gas Safe Register.
How efficient are Ideal combi boilers?
Ideal publishes 94% seasonal space heating energy efficiency for the Logic Max Combi2 and the Logic Combi ESP1, and 92.7% to 93.1% for the Vogue Max Combi depending on output. All of them carry an A efficiency class for space heating and an A class for water heating.
In everyday terms, for every £1 of gas a 94% boiler burns, about 94p goes into heating your home. The gap between one modern A-rated boiler and another is small, and the gap between any of them and a 20-year-old non-condensing boiler is not.
Ideal combi boiler dimensions
Both current Max ranges fit a standard kitchen cupboard. These casing sizes come from Ideal’s installation and servicing manuals:
| Model | Height | Width | Depth | Installation weight |
|---|---|---|---|---|
| Logic Max Combi2 | 700 mm | 395 mm | 278 mm | 28.5 to 28.6 kg |
| Vogue Max Combi | 740 mm | 445 mm | 330 mm | 32.4 to 35.4 kg |
Ideal also specifies that “450mm overall clearance with the cupboard door open is required for servicing”. Leave that room, or the engineer who keeps your warranty alive cannot do the job.
Ideal combi boiler FAQs
Which is the best Ideal combi boiler?
For the longest cover, the Vogue Max Combi, which Ideal publishes at 10 years as standard and up to 12 through a MAX accredited installer. For efficiency and value, the Logic Max Combi2 at 94%, with a 10 year warranty and the system filter included. The Logic Combi ESP1 is the budget option, with a published 2 year warranty.
How long is the warranty on an Ideal combi boiler?
Ideal publishes 2 to 12 years across the range. Its Logic Combi ESP1 specification sheet gives 2 years parts and labour, with 10 on the heat exchanger when an Ideal System Filter is fitted, while Ideal’s warranty guide lists the ESP1 under flexible options for new build and social housing. The guide gives the Logic+ Combi 7 years plus 10 on the heat exchanger, and the Logic Max Combi 10 years. Ideal publishes the Vogue Gen2 Combi at 8 years as standard, or 10 with an Ideal System Filter, and the Vogue Max Combi at 10 as standard, up to 12 through a MAX accredited installer. Every term needs registration within 30 days and an annual service.
What happens if I forget to register my Ideal boiler within 30 days?
Ideal’s standard warranty terms are blunt: “Should these conditions not be met then the period of warranty will extend to only 12 months from installation.” If your boiler went in recently and nobody mentioned registration, check with your installer today.
Does the Ideal warranty cover limescale or sludge damage?
No. Ideal excludes “de-scaling or other work required as a result of hard water scale deposits or from damage caused by aggressive water or sludge resulting from corrosion”, along with faults caused by the design, installation or maintenance of the heating system. A Smart Plan cover plan excludes sludge, scale and corrosion damage too (cover plan T&Cs p.27, general exclusions), so a system that has run unserviced is a bill for you either way.
Why does my Ideal boiler show words instead of a fault code?
Newer models such as the Logic Max Combi2 display the fault in plain English with the action to take, for example “Low Water Pressure” followed by the instruction to refill the system to 1.0 bar. Older Ideal boilers show a code such as L2 instead.
Out of warranty?
Smart Plan is a service plan, not insurance. Once your Ideal is past its manufacturer warranty, our boiler and central heating cover turns repair bills into one monthly plan. Parts and labour are included up to £500 in a 12-month period if your boiler is under 7 years old, or up to £200 if it is over 7, and anything above that limit is down to you. Cover is for future breakdowns, so a fault your boiler is showing today counts as pre-existing and needs a one-off repair instead. We work with a national network of thousands of Gas Safe registered engineers, and we aim to get an engineer out to you within two working days, with cover-plan call-outs booked Monday to Friday, 08:00 to 18:00. A £95 call-out fee, paid in advance, applies in your first 30 days, for faults the plan does not cover, no-access visits and early annual-service requests. Cover still applies during those first 30 days: the call-out fee is the only thing that changes.
