Refreshing the UK high street

The UK retail sector has experienced more than a decade of disruption.

Changing consumer behaviour, the growth of online shopping and the economic shocks of the pandemic and cost-of-living crisis have all reshaped how retailers operate and how physical retail spaces are used.

Despite these challenges, retail remains a major part of the UK economy. Figures from the December 2025 House of Commons Library Retail sector in the UK report show that the sector contributed £114.7 billion to economic output in 2024. It also supports around 2.6 million jobs and more than 300,000 businesses across the country.

Today, the conversation around retail is increasingly focused not simply on sales, but on the role that physical retail spaces play in communities and local economies. The UK Government’s recently-announced £150 million High Streets Strategy fund reflects a growing recognition that smaller retailers – cafés, salons, convenience stores, restaurants and specialist shops – are central to the vitality of towns and neighbourhoods.

For building owners and retailers alike, this renewed focus on the high street presents an opportunity to look again at the quality and performance of retail premises themselves. And one area where improvements can deliver immediate benefits is in heating, cooling and ventilation systems.

A changing role for retail spaces

Retail property is evolving. Many landlords and operators are rethinking how existing assets are used, focusing on refurbishment, improved customer experience and more efficient use of space rather than major property overhauls.

This shift is partly a response to the changing retail landscape. Although online sales surged during the pandemic and remain higher today, the physical retail environment is proving more resilient than some early predictions suggested.

CBRE’s report UK Retail at a Glance, shows that vacancy rates have begun to stabilise, and retail parks and well-located high streets have shown strong performance. Prime high street rents, particularly in major cities, have even returned to or exceeded pre-pandemic levels in some locations as demand for quality space increases.

This reflects a broader shift in how retail space is used. Shops are increasingly expected to provide experiences that cannot be replicated online, including hospitality, convenience shopping or simply a pleasant and welcoming environment in which to browse.

For these types of businesses, the comfort and quality of the indoor environment becomes a crucial part of the customer experience.

The importance of indoor comfort for smaller retailers

Independent retailers and service businesses, including hair salons, cafes and small convenience stores, are often the backbone of successful high streets. However, these premises frequently operate in older buildings where heating and cooling systems may not have been updated for many years.

In these environments, poor thermal comfort can quickly become a barrier to attracting customers. Shops that are too cold in winter, too warm in summer, or poorly ventilated can reduce dwell time and discourage repeat visits.

Modern HVAC systems can transform these spaces by providing consistent heating, cooling and ventilation throughout the year. For many smaller retail premises, compact split systems offer a practical and efficient solution. Systems such as the highly popular M-Series and Mr Slim ranges provide targeted cooling and heating in a compact format, helping retailers create a comfortable environment for both customers and staff without taking up valuable floor space.

Indoor air quality is also an increasing consideration for building occupants and regulators. Mechanical ventilation systems such as the market-leading Lossnay heat recovery ventilation can help smaller shops introduce fresh air while recovering heat from exhaust air, maintaining comfort while reducing energy consumption.

Just as importantly, improved HVAC performance can help businesses manage energy costs, a critical consideration at a time when operating expenses remain under pressure.

Refurbishment creates an opportunity

Across the retail sector, refurbishment and reconfiguration of existing premises is becoming increasingly common. Landlords are dividing larger units into smaller spaces, upgrading interiors and adapting layouts to suit changing tenant demands. These projects provide a natural opportunity to update building services at the same time.

In many cases, installing modern heat pump systems can significantly improve energy efficiency compared with older heating equipment. Electrified heating solutions also support wider decarbonisation goals, helping property owners align their assets with evolving environmental expectations and future regulatory requirements.

Another factor that makes refurbishment a good time to review HVAC systems is the ongoing transition to lower-GWP refrigerants. Changes to F-Gas regulations across Europe are gradually tightening the availability of high-GWP refrigerants used in many existing systems. For retailers and building owners, this means that systems installed today should ideally be designed with future refrigerant requirements in mind.

Upgrading to equipment that uses lower-GWP refrigerants can therefore help to future-proof retail premises while avoiding the need for further upgrades later in the decade.

For example, for larger stores and supermarkets, systems such as Mitsubishi Electric’s ECOV refrigeration units, which use CO₂ refrigerant with a Global Warming Potential (GWP) of just 1, can support compliance with F-gas regulations while offering the additional advantage of heat recovery to preheat hot water.

Minimising disruption for businesses

One of the key concerns for retailers when upgrading building services is the potential disruption to day-to-day operations. For businesses that depend on maintaining good daily footfall, even short periods of closure can have a significant impact.

Modern HVAC systems are increasingly designed to address this issue. Many solutions can be installed quickly, often during refurbishment works or outside trading hours, allowing businesses to continue operating while improvements are made.

This flexibility is particularly valuable for smaller high street premises, where space constraints and limited back-of-house areas can make traditional plant installations challenging.

Supporting the next generation of high streets

For landlords and building owners investing in the future of their retail assets, upgrading HVAC systems should therefore be seen not simply as a maintenance task, but as a strategic improvement. For example, systems such as Mitsubishi Electric’s VRF and HVRF solutions allow building managers to control heating and cooling across multiple zones while maintaining high levels of energy efficiency.

The ability to independently control temperatures in different parts of a building helps ensure comfort for both customers and staff while minimising energy use across large retail complexes.

By combining refurbishment with modern heating and cooling technologies, property owners can help ensure that high street premises remain attractive, efficient and ready for the next phase of the UK’s retail evolution.

Jonathan Smith, Business Development Manager for Mitsubishi Electric