Air Conditioning Installation in Medway and Rochester: Costs, Process and How to Choose an Installer (2026 Guide)

Air conditioning installation in the Medway Towns usually costs between £1,500 and £3,000 for one room and between £3,500 and £7,000 for a multi-split system serving two to four rooms. The figure includes the indoor and outdoor units, pipework, electrical connection, commissioning and a warranty. Prices in Medway are in line with the rest of Kent, not London.

These are guide ranges based on our Kent jobs and match the figures in our air conditioning installation cost guide. Your quote will depend on the make, the pipe run, access and the electrical supply. For a firm figure, we offer a free survey: see our domestic air conditioning installation service.

Distance between the indoor and outdoor units

Short, direct pipe runs are cheapest. A long run through a loft, up through a first floor or across a rear extension adds pipework, labour and sometimes extra refrigerant.

Where the outdoor unit goes

Ground-level wall brackets or floor stands are straightforward. First-floor wall mounts, flat roofs and tight terraced back yards, common across Chatham and Gillingham, need more care and sometimes a second engineer.

Electrical supply

Most single splits run from a dedicated spur off the consumer unit. If your board is full or old, it may need upgrading, which adds cost. Electrical work must meet Building Regulations, and a competent installer will certify it.

Brand and efficiency

Mainstream brands such as Daikin, Mitsubishi Electric, Fujitsu and Panasonic cost more upfront but hold parts and warranty support for many years. A more efficient inverter model costs more but reduces running costs; see our guide to how much air conditioning costs to run.

Condensate drainage

The indoor unit produces water that must drain away. Gravity drainage through the wall is simplest. Where that is not possible, a condensate pump is needed.

Most Medway homes suit a wall-mounted split system: one outdoor unit connected by pipework to one indoor unit. Larger houses and flats with several rooms to cool usually suit a multi-split, where one outdoor unit serves several indoor units. Our guide to single split vs multi-split air conditioning explains the trade-offs, and if you are weighing a plug-in unit, read portable air conditioner vs split system first.

Most modern split systems are also reverse-cycle heat pumps, so the same unit can heat in winter. See air-to-air heat pumps explained.

Usually not for a typical house, but it depends on the property. Flats, listed buildings and conservation areas are the main exceptions. Parts of Rochester city centre sit in conservation areas, and leasehold flats often need the freeholder's consent for an external unit. Medway Council's planning team can confirm whether your address is affected. We cover the rules in full in do you need planning permission for air conditioning?

1. Survey and quote. We visit, measure the rooms, check the electrics and agree positions for the units and pipework. You receive a fixed written price.
2. Installation. We fix the indoor unit, drill a small core hole, run the pipework and cabling, mount the outdoor unit and connect the condensate drain.
3. Pressure test and vacuum. The pipework is pressure tested with nitrogen and evacuated before refrigerant is released. Skipping this step is the most common cause of early leaks.
4. Commissioning. We check pressures, temperatures and operation in cooling and heating modes.
5. Handover. We show you the remote, explain filter cleaning, register the warranty and tidy up.

A single split takes about 4 to 8 hours. A multi-split takes one to two days. From accepting a quote, booking usually takes one to two weeks outside the summer peak. During the first heatwave of the year, lead times can stretch to several weeks, which is why many Medway customers book in autumn or spring. Our guide to the best time to install air conditioning explains the timing in detail.

Choose an installer who holds F-Gas certification, surveys before quoting, gives a fixed written price, uses reputable brands and provides a written warranty on both equipment and labour. Anyone who handles refrigerant in the UK must be F-Gas certified, and the GOV.UK guidance on fluorinated gas confirms the requirement. Use this checklist:

• Ask to see their F-Gas certificate and company registration.
• Insist on an in-person or detailed video survey. A quote from a photo alone is a guess.
• Check the quote lists the make and model, pipe length, electrical work, drainage and commissioning.
• Ask what the warranty covers and who honours it.
• Check reviews from genuine local jobs. We are rated 5 stars by our customers.
• Ask about servicing afterwards. Regular servicing protects warranties and efficiency; see how often air conditioning should be serviced.
• Be wary of cash-only deals and "this week only" pricing.

For most households that overheat in summer, work from home or want efficient heating in winter, yes. Modern inverter systems deliver two to four units of heat or cooling for each unit of electricity used, so running costs are modest. If you plan to also use it for heating, the saving against direct electric heaters can be large. If your system ever develops a fault, our air conditioning repair cost guide explains what to expect.

All Kent Cooling is a local, F-Gas certified team based in Rochester. We survey for free, give a fixed written price and install across the Medway Towns and the rest of Kent.

• For homes: domestic air conditioning installation.
• For businesses: commercial air conditioning installation.
• After installation: domestic air conditioning maintenance and air conditioning repair in Kent.

Book a free survey. Call 01634 541401 or contact us online. Learn more about our air conditioning contractor service in Rochester.

How much does it cost to install air conditioning in Medway?

A single-room split system in Medway typically costs £1,500 to £3,000 fitted, and a multi-split for two to four rooms costs £3,500 to £7,000. Price depends on the brand, pipe run, outdoor unit position and electrical work.

How long does it take to install air conditioning in a house?

A single split usually takes 4 to 8 hours and a multi-split one to two days. Booking normally takes one to two weeks outside the summer peak.

Do I need planning permission for air conditioning in Rochester?

Not usually for a house, but flats, listed buildings and conservation areas may need permission or freeholder consent. Check with Medway Council if your property is in a conservation area.

Can air conditioning heat my home as well?

Yes. Most modern split systems are reverse-cycle heat pumps and can heat as well as cool.

Is air conditioning installation in a flat allowed?

Often, but you will usually need the freeholder's or management company's written consent for the outdoor unit and pipework.

Does the installer need to be F-Gas certified?

Yes. Anyone installing or connecting systems that contain fluorinated refrigerant in the UK needs F-Gas certification.

What is the best time of year to install air conditioning?

Autumn and spring. Lead times are shorter, installers are less busy and you are ready before the first heatwave.