Meet the Tune® HVAC Smart Fluid

HVAC Smart Fluid is Tune’s energy technology that restores HVAC systems to peak operating efficiency by reversing oil fouling inside refrigerant tubing. With a one-time injection, it clears existing buildup and prevents future fouling for the life of the system.

Addressing a Silent Cause of HVAC Performance Loss

Over time, lubricant oil migrates through HVAC systems and adheres to the interior walls of refrigerant tubes. This process—known as oil fouling—restricts heat transfer, increases friction, and forces equipment to work harder to deliver the same level of heating or cooling.

Like cholesterol buildup in the human body, oil fouling gradually degrades system performance, increasing energy demand and accelerating wear.

Industry data shows that HVAC efficiency begins declining immediately:

  • Approximately 7% performance loss in the first year
  • An additional 5% loss in the second year
  • Roughly 2% degradation every year thereafter

According to ASHRAE, oil fouling can reduce HVAC performance by 30% or more over time.

A One-Time Solution with Long-Term Impact

HVAC Smart Fluid reverses oil fouling through a single, permanent injection into the HVAC system.

Once applied, the fluid:

  • Clears existing oil buildup from refrigerant tubing
  • Restores proper heat transfer and refrigerant flow
  • Prevents future oil adhesion for the life of the system

The result is HVAC performance restored to near day-one operating efficiency, without mechanical replacement or system downtime.

Measurable Efficiency Restoration

By removing oil-related restrictions, HVAC Smart Fluid enables systems to operate as originally designed:

  • Reduced compressor workload
  • Improved heat exchange efficiency
  • Lower kWh consumption required to meet load
  • More stable system operation across seasons

Instead of compensating for internal resistance, HVAC equipment can deliver consistent performance with less effort.

Seamless Integration, No Disruption

HVAC Smart Fluid is designed for fast, low-impact deployment:

  • One-time application
  • No ongoing maintenance required
  • Compatible with existing HVAC systems
  • No operational downtime during treatment

Once installed, the solution works continuously in the background to protect system performance.

Supporting Long-Term Facility Reliability

By addressing oil fouling at its source, HVAC Smart Fluid helps facilities:

  • Extend equipment life
  • Reduce stress on compressors and motors
  • Improve predictability of HVAC performance
  • Support consistent efficiency across portfolios

It’s a technology-first approach to solving a problem that traditional maintenance can’t reach.

HVAC Smart Fluid is a core component of Tune’s integrated Energy Tech and Facility Services offering—focused on restoring efficiency, improving power quality, and simplifying facility operations at scale.