Mitsubishi Electric MSZ-LN · Supplied & Fitted in Exeter, Plymouth & Devon
Mitsubishi Electric MSZ-LN Air Conditioning
Premium heating and cooling with intelligent comfort technology.
The Mitsubishi Electric MSZ-LN combines advanced heating and cooling technology with exceptional energy efficiency, quiet operation and intelligent comfort features.
With built-in Wi-Fi on compatible models, advanced air filtration and intelligent airflow control, the MSZ-LN is an excellent choice for bedrooms, living rooms, home offices and larger residential spaces.
Intelligent 3D i-see Sensor
Plasma Quad Plus Filtration
Energy-Efficient Heating & Cooling
Ultra-Quiet Operation
Supplied & Fitted
From £2,249
Based on a standard 2.5 kW back-to-back installation of the MSZ-LN. Subject to survey.

Mitsubishi Electric MSZ-LN indoor unit
Why Choose Mitsubishi Electric MSZ-LN?
The high-specification end of the Mitsubishi Electric wall-mounted range, bringing intelligent sensing, advanced filtration and quiet operation together. Some features are model dependent — we'll confirm exactly what's included on the capacity and model you choose.
3D i-see Intelligent Sensor
Advanced sensor technology monitors temperature distribution and room occupancy, helping the system adjust airflow for improved comfort and efficient operation.
Plasma Quad Plus Air Filtration
Integrated filtration technology helps reduce certain airborne particles, dust and allergens passing through the system.
Energy-Efficient Heating & Cooling
Advanced inverter heat pump technology provides powerful summer cooling and efficient heating during colder months.
Quiet Operation
Selected MSZ-LN models operate at indoor sound pressure levels as low as approximately 19 dB(A), making them suitable for bedrooms and home offices.
Wi-Fi Control
Control compatible systems remotely using Mitsubishi Electric's MELCloud platform. Adjust temperatures, select operating modes and manage schedules using a smartphone.
Dual Airflow Vanes
Independently adjustable vanes help distribute heated or cooled air throughout the room.
Dual Barrier Coating
Special internal coatings help reduce dust and dirt accumulation on selected internal components.
Weekly Timer
Create heating and cooling schedules to suit daily routines.
Dehumidification
Helps reduce excess indoor moisture during appropriate operating conditions.
R32 Refrigerant
Uses R32 refrigerant, which has a lower global warming potential than older R410A systems.
Energy Efficiency
Premium efficiency from inverter heat pump technology
Up to A+++
Cooling efficiency
Highest rating on selected capacities
Up to A+++
Heating efficiency
Rating varies by capacity
High-efficiency inverter
Seasonal performance
Published SEER & SCOP confirmed on quote
The Mitsubishi Electric MSZ-LN uses advanced heat pump technology to transfer heat efficiently, providing comfortable heating and cooling while helping reduce electricity consumption compared with conventional direct electric heating.
Seasonal efficiency figures measure performance across a whole season rather than at a single test point. Because the inverter modulates output to hold the room at temperature, the MSZ-LN can maintain comfort without running flat out — which is where the running-cost benefits over autumn and winter come from.
Ratings and running costs depend on the exact model and capacity, the climate, your electricity tariff and how the system is used. We'll confirm the published SEER, SCOP and energy label figures for the specific MSZ-LN model and capacity you choose rather than applying one rating across the range.
Available System Sizes
We fit the Mitsubishi Electric MSZ-LN in the capacities below. Prices are the installed price for one room on a standard back-to-back installation.
| System | Typical application | Installed from |
|---|---|---|
| 2.5 kW | Bedrooms and home offices | £2,249 |
| 3.5 kW | Medium-sized living rooms | £2,449 |
| 5.0 kW | Larger lounges and open-plan spaces | £2,649 |
The larger 6.1 kW nominal MSZ-LN size isn't held as a live web price above — we can supply it on request and will price the exact model, indoor unit and matching outdoor unit for you.
Correct system sizing depends on room dimensions, insulation, glazing and heat load. Frost Air Conditioning can advise on the most suitable system.
Calculate Your Installation PriceAir Conditioning That Adapts to Your Room
The MSZ-LN's 3D i-see Sensor monitors the temperature distribution around the room and senses occupancy, rather than simply reading the air at the unit. That lets the system direct conditioned air towards where people actually are and avoid blowing over areas that don't need it.
Because the sensor reads conditions across the room, the system can hold a more even temperature with less unnecessary output — comfort and efficiency working together. Sensing behaviour and availability vary by model and capacity, and we'll confirm what applies to the unit you choose.
- Occupancy detection
- Intelligent temperature monitoring
- Adjustable airflow direction
- Improved comfort
- Energy-saving features
Advanced Plasma Quad Plus Filtration
Plasma Quad Plus filtration is built into the MSZ-LN indoor unit, so air passes through the filtration stages as part of normal operation. It helps reduce certain airborne particles, dust and allergens passing through the system.
Filtration performance depends on the model and on how the system is used and maintained. We'll confirm the filtration fitted to the exact MSZ-LN model you choose, and advise on servicing to keep it working as intended.
- Dust reduction
- Allergen reduction
- Integrated filtration
- Improved indoor comfort
Mitsubishi Electric Manufacturer Warranty
Your Mitsubishi Electric MSZ-LN air conditioning system is supported by the applicable manufacturer's warranty, providing protection against qualifying manufacturing defects in accordance with Mitsubishi Electric's warranty terms.
Every Mitsubishi Electric system we fit comes with a 3 year manufacturer warranty. Cover depends on correct installation and commissioning, product registration and servicing to Mitsubishi Electric's terms, and we register the system for you.
Your installation is also covered by our own workmanship guarantee. Ask us for the details.
Compare Mitsubishi Electric Models
Here's where the MSZ-LN sits within the Mitsubishi Electric wall-mounted range we install most often.
| Feature | MSZ-HR | MSZ-AP | MSZ-LN |
|---|---|---|---|
| Heating & Cooling | Yes | Yes | Yes |
| Inverter Technology | Yes | Yes | Yes |
| Wi-Fi Control | Model dependent | Model dependent | Model dependent |
| Quiet Operation | Yes | Yes | Yes |
| 3D i-see Sensor | No | No | Yes |
| Plasma Quad Plus | No | No | Yes |
| Advanced Airflow | Basic | Enhanced | Intelligent dual-vane |
| Product Positioning | Entry Level | Mid-Range | Premium |
The MSZ-HR covers straightforward heating and cooling at entry level, the MSZ-AP adds advanced airflow control and smart features on compatible models, and the MSZ-LN sits at the top of the range with intelligent sensing and Plasma Quad Plus filtration built in.
Installed by Frost Air Conditioning
Frost Air Conditioning supplies and professionally installs Mitsubishi Electric air conditioning throughout Exeter, Newton Abbot, Plymouth and the surrounding areas. Every install is carried out by our own REFCOM registered, F-Gas certified engineers — we'll size the system to your rooms, agree where the indoor and outdoor units go, keep the pipework and trunking tidy, and walk you through the controls before we leave.
The MSZ-LN's sensing, filtration and Wi-Fi features are set up and demonstrated on the day, so you leave with the system running the way it was designed to. Optional servicing and maintenance is available to keep it that way.
Covering Exeter, Newton Abbot, Plymouth and surrounding areas.
- F-Gas-certified installation
- Room sizing and system selection
- Indoor and outdoor unit positioning
- Neat pipework and trunking
- Electrical requirements assessed
- Pressure testing and commissioning
- Wi-Fi setup guidance
- Demonstration of system controls
- Optional servicing and maintenance
Mitsubishi Electric MSZ-LN Gallery
Genuine Mitsubishi Electric MSZ-LN product photography, together with typical installations in homes across Devon.

