Air conditioning is a significant purchase, and it pays to understand what affects the price before you start getting quotes. This guide explains what goes into the cost of a domestic installation, where it is worth spending more, where you can save, and the ongoing costs to factor in. We publish our starting prices because we think budgeting should not involve guesswork, but every home is different, which is why we always confirm the price after a survey.
Start with what you want to achieve
Before thinking about numbers, decide what problem you are solving. Is it one bedroom that is too hot to sleep in, a home office that bakes in the afternoon, a conservatory that is unusable in summer and winter, or several rooms across the house? The number of rooms and how you use them shapes everything else. A single-room system is the most affordable way to start, and many people add more rooms later.
What affects the cost
Number of rooms and system type
A single split system, with one indoor and one outdoor unit, is the simplest option. A multi-split serves several rooms from one outdoor unit and costs more, but usually less than several separate systems and with fewer units on the outside wall. Ducted and ceiling cassette systems cost more again because of the extra work involved.
Capacity
Units are sized to the room. Large rooms, lots of glazing, south or west facing windows and loft rooms need more capacity. Getting the size right matters more than getting the cheapest unit; an undersized system will struggle and an oversized one will waste energy and control humidity poorly.
Brand and features
Quality manufacturers offer ranges from standard to premium. Premium units tend to be quieter, more efficient and better looking. Read our guide to air conditioning features worth paying for to decide which features matter to you.
Installation complexity
The biggest variable is often the installation itself. Things that add time and cost include long pipe runs, getting pipework through thick walls or stone, routing pipes neatly through finished rooms, high-level outdoor unit positions that need access equipment, and electrical work to provide a dedicated supply. Older properties, which are common in our area, sometimes need more care.
Electrical work
Each system needs a suitable electrical supply. If your consumer unit has spare capacity, this can be straightforward. If not, more work may be needed. We check this on the survey so it is not a surprise later.
Permissions
If you live in a listed building or a conservation area, you may need consent or permission, which can add time to the project. We advise on what is likely to be needed but do not submit applications on your behalf. Our listed buildings guide explains more.
Our prices
Our air conditioning installations start from £1,300. The final price depends on the factors above, and we provide a clear, fixed quote after surveying your home. You can find more detail on our air conditioning prices page.
Domestic air conditioning installations are currently zero-rated for VAT, and we show the VAT position clearly on every quote.
Ongoing costs to budget for
Running costs
Modern inverter systems are efficient, and when used for heating they deliver several units of heat for each unit of electricity used. How much you spend depends on how often you use the system, the temperatures you set and your electricity tariff. Moderate set points and scheduling make a real difference.
Servicing
Regular servicing keeps the system efficient, catches small problems early and is usually required to keep the manufacturer’s warranty valid. Our servicing ranges from £179 to £389 depending on the system. Alternatively, our Comfort Club covers routine care for £14.99 a month.
Repairs and lifespan
A well-installed and maintained system should give many years of service. Budgeting a little each year for maintenance is much cheaper than dealing with a neglected system later.
Where to spend and where to save
Worth spending on: a reputable installer with F-Gas certified engineers, correct sizing, an inverter unit from a well-supported brand, quiet operation in bedrooms, and good controls.
Where you can save: start with the room that matters most and add more later; choose a wall-mounted unit rather than ducted where looks allow; skip features you will not use.
Avoid false economies: very cheap quotes often cut corners on pipework, pressure testing, commissioning or electrical work. Poor installation is the main cause of leaks and early failure, and it can affect warranties.
Comparing quotes
When comparing quotes, check that each one includes the same things: unit model and capacity, pipe run, electrical work, making good, condensate drainage, commissioning, warranty terms and VAT. A cheaper quote that excludes electrical work or making good may not be cheaper in the end.
Next steps
The most accurate way to budget is a survey. We visit, look at each room and your electrics, discuss how you use the space, and give you a fixed price with no obligation. We install across Suffolk and north Essex, including homes in Colchester. Read more on our air conditioning installation page.
Book a free survey
Ready to talk about your property? Book a free survey and one of our engineers will assess your space and recommend the right system for it.
