10 Best Inverter Air Conditioner 9000 in The UK

Last updated on 16/07/2025

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DELLA Mini Split AC 9000 BTU Works with Alexa 19 SEER2 Cools Up to 400 Square Feet 230V WiFi AC Activated and 0.75 Ton Wireless Inverter System Pre-Charged Heat Pump Kits

Why We Love It

Energy efficient and environmentally friendly.
Wide coverage for large spaces.
Intelligent features for ultimate comfort.

Main Highlights

Energy-saving cooling: This AHRI-certified pre-charged air conditioner features a channelless mini split inverter and a heat pump system (up to -5°F/15°C) and DC inverter technology provides up to 30% energy saving.
Wide Coverage This unit provides cooling and heating up to 400 square meters. feet and able to work in environments down to -15°C. Includes complete installation kit (standard size of 1/4" and 3/8" copper tubes). The length of the drain hose is 180 cm.
[Strong System] This air conditioner is equipped with multiple intelligent functions that make it easy to use: 4D airflow (top left and right), direction mode, 24 hour timer, standby mode, environmentally friendly power saving mode, multiple fan speeds, turbo function, heating, cooling, dry and automatic mode. The maximum size of the fuse is 15A.
Intelligent Sensor & Installation The device detects the ambient temperature on the remote control instead of on the indoor unit during cooling mode. Then adjust the air flow and temperature accordingly, resulting in ultimate control of personal comfort and energy saving. Line extraction is required during installation. Any change in the length of the line set requires adjustment of freon levels. This system requires professional installation, it is not a DIY split mini air conditioner.
Quiet Operation This air conditioner is ultra quiet at only 41dBA. The unit ensures even airflow to every part of your room and can be adjusted to 15-80°C to adapt to your comfort in minutes.

DELLA 12000 BTU Mini Split Air Conditioner & Heater Ductless Inverter System, 19 SEER2 208-230V, 8 HSPF, with 1 Ton Heat Pump, Cools Up to 750 Sq. Ft. Full installation 16.4 ft kit included

Why We Love It

Energy efficient and eco-friendly.
Quiet operation for ultimate comfort.
Smart technology for personalized control.

Main Highlights

[ENERGY EFFICIENT COOLING] This 12000 BTU/h, 19 SEER2, 208-230V, 8.5 HSPF, AHRI Certified pre-charged air conditioner and heater unit features a ductless mini split inverter plus system with a heat pump (up to -4℉/-20℃) and dehumidification. R-410A mini split systems cannot be shipped to Washington state due to regulatory restrictions.
[STRONG SYSTEM] This air conditioner is designed with several smart functions that make it easy to use: 4D air flow(up-down left-right), I feel mode, 24 hour timer, sleep mode, eco energy saving mode, multiple fan speeds, turbo function, heating, cooling and dry modes for dehumidifying. Maximum Fuse Size is 15A.
[SMART SENSOR] The unit will sense room temperature at the remote control, instead of at the indoor unit during cooling mode. It then adjusts airflow and temperature accordingly, resuling in the ultimate in personal comfort control and energy savings.
[QUIET OPERATION & INSTALLATION] This air conditioner is ultra silent at only 41 dBa. The unit provides equal airflow in every part of your room and can adjust to 60-90 degrees Fahrenheit to suit your comforts in just a few minutes.Line-set vacuuming is required during installation. Any alteration of line-set length requires adjusting freon levels.This system mandates professional installation – it's not a DIY mini split AC.
[AMPLE COVERAGE] This unit provides cooling and heating for up to 550 square feet and is able to work in environments as low as -4 degrees Fahrenheit. Full installation kit 16.4 ft included (Standard size 1/4" & 3/8" outer dimension copper pipes). The length for drain pipe is 78.7".

Generic 18000BTU Solar Inverter Multi 9k Zones Split Air Conditioner/Heater - 2 Zones, 124325

Main Highlights

2 Zones

DELLA Vario Series 9000 BTU Mini Split Air Conditioner Work with Alexa 19 SEER2 Cools Up to 400 Sq.Ft Energy Efficient Ductless Inverter System, Heat Pump Pre-Charged and 16.4ft Installation Kits

Why We Love It

Energy efficient cooling options.
Wide coverage for any space.
Ultra quiet operation for comfort.

Main Highlights

[ENERGY EFFICIENT COOLING] This 9000 BTU/h, 19 SEER2, 110-120V, ETL Listed, AHRI Certified pre-charged air conditioner unit features a ductless mini split inverter plus system with a heat pump (up to -4℉/-20℃) and DC Inverter technology provides up to 30% power savings. R-410A mini split systems cannot be shipped to Washington state due to regulatory restrictions.
[AMPLE COVERAGE] This unit provides cooling and heating for up to 400 Sq. Ft and able to work in environments as low as -4 degrees Fahrenheit. Full installation kit included (Standard size 1/4" & 3/8" outer dimension copper pipes). The length for drain pipe is 78.7".
[STRONG SYSTEM] This air conditioner is designed with several smart functions that make it easy to use: 4D air flow(up-down left-right), I feel mode, 24 hour timer, sleep mode, eco energy saving mode, multiple fan speeds, turbo function, heating, cooling and dry modes for dehumidifying. Maximum Fuse Size is 25A.
[SMART SENSOR & INSTALLATION] The unit will sense room temperature at the remote control, instead of at the indoor unit during cooling mode. It then adjusts airflow and temperature accordingly, resulting in the ultimate in personal comfort control and energy savings.Line-set vacuuming is required during installation. Any alteration of line-set length requires adjusting freon levels.This system mandates professional installation – it's not a DIY mini split AC.
[QUIET OPERATION] This air conditioner is ultra silent at only 41 dBa. The unit provides equal airflow in every part of your room and can adjust to 60-90 degrees Fahrenheit to suit your comforts in just a few minutes.

Mobile air conditioner 9000BTU - 2.64KW - Cool Clima

Why We Love It

Powerful cooling capacity.
Portable and easy to use.
Energy efficient operation.

Main Highlights

Mobile Air Conditioner 9000BTU 2.64KW Cool Clima
Brand: COOL CLIMA

Window Air Conditioner, Energy-saving Inverter Air Conditioner, Window AC Unit with Remote Control and Adjustable Thermostat, Cools up to 20m², 24H Timing, Digital Display, Quiet Operation (Size : 90

Why We Love It

Powerful cooling for large spaces.
Convenient remote for easy use.
Whisper-quiet operation enhances comfort.

Main Highlights

【Powerful Cooling Efficiency】This 9000BTU/12000BTU window air conditioner provides efficient cooling for spaces up to 25 square meters, while providing fan and dehumidification in any living room, bedroom, or office.Create a relaxing and comfortable environment.
【High Performance】The air conditioner features an easy-to-read LED display and includes a compact remote control to easily set the time (24H Timing), temperature (16℃~32℃), and mode (3 modes: cooling, dehumidification, air fan).
【Silent Operation】Full DC inverter, energy saving (saves about 15% of electricity) and low noise.9 times quieter than traditional units. The blocks the noise from the cooling system using your window. This design allows for extremely quiet operation as low as 45dB - almost as quiet as a library.
【Washable Dust Filter】We designed a removable and reusable air filter to protect your family and living space from dust and pet hairs. It is recommended that you clean the filter once a month to extend the life and cooling performance of this unit.
【Compact & Easy to install】This air conditioner measures 52.5×48.9×34cm and weighs 26kg. The window kit is compatible with most windows, letting you install it effortlessly.

Window Air Conditioner, Energy-Saving Inverter AC Unit with Remote Control, Adjustable Thermostat, 24H Timer, Cools up to 20m², Quiet Operation, Digital Display

Why We Love It

Efficient cooling for any space.
Whisper-quiet operation for comfort.
User-friendly remote and display.

Main Highlights

Efficient Cooling Performance: This 9000BTU/12000BTU window air conditioner effectively cools areas up to 25 square meters, providing cooling, fan, and dehumidification functions for your living room, bedroom, or office. Enjoy a comfortable and relaxing atmosphere year-round.
User-Friendly Features: Equipped with a clear LED display and a compact remote control, this air conditioner allows for easy adjustments to the timer (24H Timing), temperature range (16℃~32℃), and three operational modes: cooling, dehumidification, and air fan.
Whisper-Quiet Operation: Utilizing a full DC inverter, this air conditioner is energy-efficient, consuming approximately 15% less electricity while operating quietly. It is designed to minimize noise from the cooling system, achieving sound levels as low as 45dB—comparable to the quietness of a library.
Removable Washable Filter: The air conditioner includes a removable and reusable air filter that protects your home from dust and pet hair. Regular cleaning of the filter—ideally once a month—will help maintain optimal cooling performance and extend the unit's lifespan.
Compact and Simple Installation: With dimensions of 52.5×48.9×34cm and a weight of 26kg, this air conditioner is compact and easy to install. The included window kit is compatible with most window types, making installation hassle-free.

Senville LETO Series Wall Split Air Conditioner Heat Pump, Wall Mounted, 9000 BTU, Inverter, White

Why We Love It

All-season heating and cooling.
Stylish and powerful unit.
Comprehensive installation kit included.

Main Highlights

VERSATILE 4-IN-1 WALL SPLIT: Dive into an all-season solution with our wall split AC and heating system, featuring air conditioning, a robust heat pump (functional up to 5F/-15C), dehumidifier, fan, and an accelerated turbo function. Enjoy the reliability of a DC Inverter that's UL Listed, AHRI Certified.
STYLISH & FUNCTIONAL WALL SPLIT AC: Crafted for both home and business, this wall split air conditioner provides dynamic performance without compromising on aesthetics. Ideal for bedrooms, living areas, commercial spaces like stores, eateries, and warehouses.
COMPLETE INSTALLATION PACKAGE: Comes with an indoor air handler, outdoor condenser, intuitive remote control, and a comprehensive installation kit featuring a 16ft. line set and communication wire. Pre-loaded with R32 refrigerant catering up to 25 ft. A heads-up: This system mandates professional installation – it's not a DIY mini split AC.
TRUST WORTHY 5-YEAR WARRANTY: Your investment is safeguarded with our wall split heat pump's industry-leading warranty – 5 years on parts replacement and another 5 on the compressor. Benefit from the established quality of Senville, complemented by complimentary technical assistance. Labor not included.

9000 BTU Portable Air Conditioner for home or office with window vent kit and accessories.

Igenix IG9919 9000 BTU 4-in-1 Portable Air Conditioner, Cooling, Fan, Dehumidifier & Heating Functions, 24 Hour Timer, Remote Control & Window Venting Kit Included

20% Off

Why We Love It

Effortless room-to-room portability.
Remote control for convenience.
Adjustable comfort with speeds.

Main Highlights

Portable air conditioner that you can vent through your wall, or straight out a window using the exhaust hose provided
Remote control and 24-hour timer for added convenience
Compact, portable design with a 1.5 m exhaust hose included
3 fan speeds to find your ideal setting
Comes with a two years warranty which can be registered online

8.7

Excellent

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We scanned 1534 products

We reviewed these offers relevant to the Inverter Air Conditioner 9000 within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Della, Generic, COOL CLIMA, Yclty, Senville, Igenix, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Inverter Air Conditioner 9000 in the market, we considered we took a deep dive into 7671 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is DELLA Mini Split AC 9000 BTU Works with Alexa 19 SEER2 Cools Up to 400 Square Feet 230V WiFi AC Activated and 0.75 Ton Wireless Inverter System Pre-Charged Heat Pump Kits. We love many things about this product by Della. What sets it apart from the competition is Energy efficient and environmentally friendly. , Wide coverage for large spaces. , Intelligent features for ultimate comfort. .
The best value product for most shoppers and where user satisfaction is continuously the highest is DELLA 12000 BTU Mini Split Air Conditioner & Heater Ductless Inverter System, 19 SEER2 208-230V, 8 HSPF, with 1 Ton Heat Pump, Cools Up to 750 Sq. Ft. Full installation 16.4 ft kit included by Della based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Inverter Air Conditioner 9000 and the best cost-to-value ratio is Igenix IG9919 9000 BTU 4-in-1 Portable Air Conditioner, Cooling, Fan, Dehumidifier & Heating Functions, 24 Hour Timer, Remote Control & Window Venting Kit Includedat Igenix with a 20% discount.
Our list of the best Inverter Air Conditioner 9000 is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Inverter Air Conditioner 9000 in The UK

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We scanned 1534 products

We concluded that: