Office refurbishment is accelerating as building owners respond to tighter energy regulations, rising sustainability demands, and changing tenant expectations. As HVAC systems account for a significant share of a building’s energy use, improving their performance is no longer optional – and effective HVAC water treatment is a critical part of achieving it.
Refurbishment has therefore become a pragmatic route to decarbonisation. By upgrading HVAC systems and optimising water quality within existing buildings – rather than demolishing and rebuilding – owners can reduce embodied carbon, improve energy efficiency, and bring older assets in line with modern performance standards.
Rising Expectations on Environmental Performance
Tenants are increasingly prioritising buildings with strong environmental credentials. Certifications such as BREEAM are no longer differentiators – they are fast becoming expectations. Buildings that fail to meet these standards risk reduced rental income, declining asset value, and limited long-term competitiveness.
HVAC Performance Depends on Water Quality
HVAC systems are among the largest energy consumers in office buildings and therefore central to refurbishment projects. While upgrades such as heat pumps and high-efficiency chillers can reduce emissions, new technology alone does not guarantee performance.
When existing pipework is retained — a common strategy to reduce embodied carbon — corrosion products, scale, and debris can be released into the system. Poor water quality can restrict flow, reduce heat transfer, increase energy use, and accelerate wear on modern HVAC equipment, which is often more sensitive than older systems.
Refurbish.
Retrofit.
Rethink Water Treatment.
EnwaMatic® – Effective HVAC Water Treatment for Refurbished Buildings
EnwaMatic side stream filtration is designed to protect HVAC systems during and after refurbishment. The system continuously filters circulating water, removing suspended solids down to <10 microns and maintaining stable water quality.
Turning over the equivalent of the full system volume every 24 hours, EnwaMatic operates automatically with minimal maintenance, ensuring reliable HVAC performance over time.
Chemical-Free Protection and Preventative Performance
Beyond filtration, EnwaMatic provides chemical-free HVAC water treatment using a calcite/dolomite reaction media. By controlling key water parameters, the system protects against corrosion, scaling, and fouling — without the need for conventional chemical inhibitors.
At Enwa, water treatment is viewed as a preventative strategy. Clean, well-conditioned water supports better heat transfer, lower energy consumption, and more reliable HVAC operation. It helps refurbished buildings deliver the energy and carbon savings they were designed for.
With EnwaMatic HVAC water treatment solutions, building owners can support decarbonisation, extend equipment lifespan, and futureproof their investments in office refurbishment.
Get in touch with us to learn more about EnwaMatic and what it can do for your HVAC system.
Hampus Mattsson
Sales EnwaMatic Sweden
+46 (0)76 139 04 33
hampus.mattsson@enwa.com
