Warranty is one of the most misunderstood parts of buying air conditioning. Adverts quote headline figures, but the cover you actually get depends on the brand, the type of system, the installer’s status with the manufacturer and whether you keep up with servicing.
We give you the manufacturer’s warranty only. We don’t sell an extended warranty or add a separate guarantee of our own, so this guide is about understanding what the manufacturers offer. It’s general information, not legal advice, and terms change, so we confirm the exact cover that applies on every quote.
Brand-by-brand UK warranty terms
| Brand | What the manufacturer’s UK terms say | Key conditions |
|---|---|---|
| Daikin | 2 years standard on split air conditioning. 5 to 7 year extensions apply to air-to-water (Altherma) units only. | See Daikin’s terms (Daikin warranty) |
| Mitsubishi Electric | Up to 5, 7 or 10 years depending on the installer’s partner tier | Installer’s tier in the partner programme (Mitsubishi Electric) |
| Panasonic | Residential air conditioning: 3, 5 or 7 years parts and labour depending on installer status | Registration on Panasonic PRO Club within 30 days; annual maintenance with records (Panasonic key facts) |
| LG | Single split: 3 years basic, 5 years extended; 10-year compressor warranty, parts only | Extended cover needs an LG-trained installer with a valid F-Gas certificate (LG UK) |
| Toshiba | “Up to 7-year warranties and labour allowances” | F-gas registered installers meeting Toshiba’s guidelines (Toshiba UK) |
| Fujitsu / GENERAL | Length depends on the installer’s status; homeowner terms aren’t published on the UK site | The manufacturer’s warranty, which we explain on your quote |
| Samsung, Mitsubishi Heavy Industries, Hitachi | Not verified for this guide | The manufacturer’s warranty, which we explain on your quote |
The pattern is clear. Most brands set a basic period, then reward installers who train with them or join a partner scheme with longer cover. Daikin is the exception on split air conditioning, with a 2-year standard warranty.
What a manufacturer’s warranty usually covers
A manufacturer’s warranty covers defects in the product: a component that fails because of how it was made. Typical examples are a control board, a fan motor, a sensor or, within its terms, a compressor. Some brands include labour for the repair; others cover parts only for some items. LG’s 10-year compressor cover, for example, is parts only, so labour and refrigerant would be charged after the main warranty ends.
What it usually doesn’t cover
Panasonic’s UK terms give a clear example of the standard exclusions (Panasonic key facts):
- normal maintenance and parts that wear and are replaced during servicing;
- purely cosmetic defects such as scratches;
- damage from misuse, neglect, accident, incorrect supply voltage or defective installation or servicing;
- filling with the wrong or contaminated fluids;
- unapproved modifications or use outside intended conditions;
- storms, frost, corrosion, lightning, flooding or fire;
- consumable parts and consequential losses.
LG says the same in short: claims from incorrect installation, poor maintenance or misuse are outside its product warranty. Refrigerant leaks from poor installation joints are an installation issue, not a product defect, which is why who installs your system matters as much as which brand you choose.
How warranties are lost
- No servicing records. Panasonic requires annual maintenance with records you can show. Other brands set their own servicing conditions.
- No registration. Panasonic’s terms require registration within 30 days. Ask your installer to confirm registration in writing.
- Uncertified work. Work on the refrigerant circuit must be done by an F-gas certified company with qualified engineers. Uncertified work is illegal as well as a warranty risk.
- Moving the unit. Panasonic’s cover applies only at the original installation site, and other brands may say the same.
- Missing commissioning paperwork. Several brands ask for commissioning records with a claim.
Want it done properly? AirCon Doctor installs, repairs and services air conditioning and heat pumps across London and the South East, from our base in East Grinstead. We’re an F-Gas certified company and NICEIC approved. Get a fixed-price quote.
Questions to ask before you buy
- Which manufacturer’s warranty applies to this installation, and for how long?
- Does it cover parts and labour, and is refrigerant included?
- Who registers the product, and when?
- What servicing does the warranty require, and how often?
- Will I get the commissioning sheet and F-Gas records?
Our quotes answer all five. See /air-conditioning-quote-what-should-be-included/ for what else a good quote should show.
How a warranty claim usually works
If a covered part fails, the claim normally runs through the installer rather than directly between you and the manufacturer:
- You report the fault to the installer, with the model number and any error code.
- An engineer diagnoses the fault and confirms which part has failed.
- The installer makes the claim, usually with the commissioning sheet and service records. Panasonic’s terms say commissioning documentation must be presented for claims, and Toshiba handles claims through its commissioning and warranty tool.
- The manufacturer supplies the replacement part, and labour is covered or allowed for where the terms include it.
Refrigerant used during a repair, access equipment for high-level units and call-outs for faults that turn out not to be product defects may not be covered. Ask how these are handled before you buy, and keep your paperwork together in one place. If a code appears, our guides to /daikin-air-conditioning-error-codes/, /mitsubishi-electric-air-conditioning-error-codes/ and /samsung-air-conditioning-error-codes/ help you describe it.
Warranty versus your statutory rights
A manufacturer’s warranty sits alongside your legal rights as a consumer; it doesn’t replace them. If something isn’t right with the installation itself, speak to the installer first. This is general information, not legal advice. Citizens Advice and the manufacturer’s customer service can help with specific disputes.
Keeping your system covered
The simplest way to protect your warranty is a yearly service with written records. Our annual service costs £95 to £150 + VAT and includes the checks manufacturers expect: filters, coils, condensate drain, electrical connections and refrigerant performance. Businesses can put this on a /air-conditioning-maintenance-contracts/ plan. See /air-conditioning-annual-service-what-is-included/.
Quick answers
How long is the Daikin air conditioning warranty?
Daikin’s standard warranty on split air conditioning is 2 years. Its 5 to 7 year extensions apply to air-to-water (Altherma) heat pumps only.
Does servicing affect my air conditioning warranty?
Often, yes. Panasonic’s UK terms, for example, require annual maintenance with records. Check your brand’s conditions and keep every service report.
Do I need to register my air conditioning for the warranty?
Some brands require it. Panasonic asks for registration on its PRO Club site within 30 days of installation. Ask your installer who registers it and to confirm in writing.
Does AirCon Doctor offer its own warranty?
No. You get the manufacturer’s warranty, which we explain on your quote, including any registration and servicing conditions.
Related services
- Air conditioning installation
- Air conditioning servicing
- Air conditioning maintenance contracts
- Air conditioning repair
More advice
- Mitsubishi Electric vs Daikin Air Conditioning: Which Should You Choose?
- Panasonic Air Conditioning Review — Is It Worth Buying?
- LG Air Conditioning Review — Honest Assessment from UK Engineers
- Air Conditioning Annual Service: What’s Included and Why It Matters
- All advice
This guide is general information, checked against the sources linked on 30 October 2026. It isn’t legal, tax or financial advice. Rules, grants and product ranges change, so check the current position before you rely on it.