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  • The ROI of Sustainability And HVAC Coatings

    The ROI of Sustainability And HVAC Coatings

    Sustainability has moved from a corporate values statement to a board-level business strategy. The question executives are increasingly being asked to answer is not whether their company is committed to sustainability. It is whether that commitment is generating a measurable return. That shift in framing changes everything about how sustainability investments are selected, evaluated, and communicated.

    For business owners and executives looking to build a credible sustainability program with demonstrable ROI, understanding what sustainability actually means in a business context and where the financial returns come from is the essential starting point. HVAC coatings are not often the first thing that comes to mind in that conversation. They should be.

    Defining Sustainability for Business

    In a business context, sustainability encompasses a range of initiatives designed to promote a company’s long-term welfare, its stakeholders, society, and the environment. As defined by The Conference Board in a January 2025 primer published through the Harvard Law School Forum on Corporate Governance, it includes compliance with sustainability-related regulations, ESG disclosure requirements, and the operational practices that reduce a company’s environmental footprint over time.

    Trane Technologies frames it in operational terms. Sustainability is about making things last. That includes developing technologies that reduce energy use and waste, lowering costs, and designing for the long term. This framing is particularly useful for executives because it connects environmental stewardship directly to business performance rather than treating it as a competing priority.

    The ROI of sustainability, then, is the measurable benefit derived from economic, environmental, and social practices evaluated against the cost of the investments required to produce them. It is broader in scope than traditional ROI. However, the financial component is real, documented, and, increasingly, the primary lens through which investors and executives evaluate sustainability programs.

    Why the Financial Returns Are Real

    The business case for sustainability ROI has moved well beyond theory. According to Plan A’s analysis of ESG performance data, companies leading on ESG criteria saw 8% higher returns than the broader U.S. market in 2021, and those with high ESG scores receive an average 10% discount on their cost of capital compared to lower-scoring peers. A McKinsey study found that products making ESG-related claims grew disproportionately compared to those without. Over a 15-year period, sustainability programs have increased shareholder value by an average of $1.28 billion for participating companies.

    Those returns flow through multiple channels. These channels include direct cost reduction from energy and resource efficiency, reduced climate and regulatory risk exposure, improved employee retention and recruitment, stronger brand equity, and better access to capital through green financing and ESG-focused institutional investors. A survey by EY found that 89% of institutional investors now incorporate ESG data into their decision-making. That figure underscores how thoroughly sustainability performance has become a financial signal in capital markets.

    Despite the strength of the evidence, The Conference Board’s research found that 41% of polled executives either believe their companies are underperforming or remain uncertain about assessing the ROI of their sustainability investments. The gap is not in the returns themselves. It is in how companies identify, measure, and communicate them.

    The Most Overlooked Sustainability Lever

    When executives build sustainability roadmaps, they tend to focus on high-visibility initiatives. These include renewable energy procurement, carbon reporting frameworks, fleet electrification, and LED retrofits. These are legitimate investments. But they often overlook a category of efficiency gains that is lower-cost, faster to implement, and directly measurable. That category covers protecting and optimizing existing mechanical systems from physical degradation.

    HVAC systems account for 50% or more of energy consumption in most commercial and industrial buildings. That makes HVAC efficiency one of the highest-leverage variables in a company’s energy footprint. It can also be one of the most direct pathways to improving both the financial and environmental dimensions of sustainability ROI. Yet HVAC efficiency is rarely addressed at the equipment-protection level. That is where much of the degradation that drives up energy consumption actually originates.

    How Coat Zone® Coatings Build Sustainability ROI

    Coat Zone®’s protective coatings address two of the primary physical mechanisms that cause HVAC systems to consume more energy than they should and degrade faster than they need to. Both products generate tangible, measurable, and directly attributable returns, making them well-suited to sustainability ROI frameworks.

    Restoring Heat Transfer Efficiency

    CoilSafe® is an ultra-thin inorganic coating applied to HVAC heat exchanger coils to prevent corrosion. It also restores the fin-to-tube bond, enabling efficient heat transfer, and creates a glass-like, antimicrobial surface that resists fouling. At just 8 to 10 microns thick, it does not restrict airflow. It actually improves performance, delivering a measured 10% increase in HVAC efficiency (kW/ton) and corrosion protection. This is validated through 6,000 hours of salt-fog testing (ASTM B117).

    For sustainability ROI, CoilSafe® produces returns across multiple dimensions simultaneously. For example, lower utility costs from improved energy efficiency, reduced maintenance frequency, extended equipment lifespan that defers capital replacement, and measurably lower carbon emissions per unit of output. These are exactly the kinds of tangible, quantifiable benefits that The Conference Board identifies as most effective for building internal buy-in and demonstrating the sustainability program’s value to executives and boards.

    Eliminating Solar Heat Load Before It Reaches the System

    ThermalBlock™(or ThermalBlock by Coat Zone®) is a CRRC-certified radiant barrier coating applied to the exterior of rooftop HVAC cabinets, air handlers, and exposed ductwork. It blocks up to 93% of solar heat, keeping surface temperatures within 10°F of ambient air even under peak summer sun, with a Solar Reflective Index of 108.

    By reducing the thermal burden on rooftop equipment, ThermalBlock™(or ThermalBlock by Coat Zone®) directly lowers compressor run time, reduces peak-hour energy consumption, and extends equipment lifespan by up to 30%. For companies with sustainability commitments tied to energy reduction targets or Scope 2 emissions, this is a quantifiable contribution with an ROI timeline of 12 to 36 months. That’s faster than most capital-intensive sustainability projects.

    Sustainability ROI Starts with What You Already Have

    The most effective sustainability programs, as Trane Technologies’ ROI of Sustainability Playbook notes, leverage sustainability as a performance advantage that generates returns across the full value chain. The leverage doesn’t just apply to headline initiatives; it extends to every layer of operational efficiency. That principle applies directly to HVAC equipment, where physical degradation silently erodes both energy performance and asset value over time.

    CoilSafe® and ThermalBlock™(or ThermalBlock by Coat Zone®) represent the kind of foundational, low-disruption investment that sustainability ROI frameworks reward: clear cost inputs, measurable energy and efficiency outputs, attributable emissions reductions, and asset-life extension that reduces the capital intensity of long-term operations. They do not require a major capital budget cycle or a lengthy implementation timeline — and their results show up on utility bills and maintenance logs in the months following application.

    For executives building a sustainability strategy that needs to demonstrate real return, the place to start is often closer and more concrete than it appears. Contact Coat Zone® to learn how our coatings can help you achieve sustainability ROI.

    Citation List
    • Tonello, Matteo, Nathalie Risse, and Anuj Saush. “The Sustainability Dividend: A Primer on Sustainability ROI.” Harvard Law School Forum on Corporate Governance / The Conference Board. January 4, 2025. corpgov.law.harvard.edu
    • Basil-Jones, Will. “Understanding the ROI of Sustainability.” Plan A Academy. October 17, 2024. plana.earth/academy/roi-sustainability
    • Atalla, Mauro J. and Chris Kuehn. “The ROI of Sustainability: A Strategic Playbook.” Trane Technologies. March 30, 2026. tranetechnologies.com
    • McKinsey & Company. “Consumers Care About Sustainability — and Back It Up with Their Wallets.” mckinsey.com
    • EY. “EYS Institutional Investor Survey.” ey.com
  • Your HVAC Coils Are Costing You More Than You Think

    Your HVAC Coils Are Costing You More Than You Think

    Here’s something most business owners don’t realize: your HVAC system didn’t start losing efficiency the day it broke down. It started losing efficiency the day it was installed. Slowly, quietly, and in a way that shows up on your utility bill long before it shows up as a service call.

    The culprit is usually the coil.

    What Happens to HVAC Coils Over Time

    The heat exchanger coil is the part of your HVAC system that actually does the heating and cooling. It’s a tight network of fins and copper tubing. When it’s working properly, heat transfers efficiently between the refrigerant and the air moving through your building.

    But over time, a few things happen. Corrosion sets in. Mold and debris accumulate in the fins. The bond between the fin and the copper tube, which is critical for heat transfer, begins to loosen. The coil is still technically “working,” but it’s working harder to do less. Your system runs longer cycles, pulls more kilowatts, and wears out faster.

    HVAC systems already account for 50% or more of energy use in most commercial buildings. A degraded coil pushes that number higher every month.

    So What Does CoilSafe® Actually Do?

    CoilSafe® is a thin-film inorganic coating applied directly to your HVAC coil, either in the field or at a service shop. At just 8 to 10 microns thick (about 40 times thinner than a standard epoxy coating), it doesn’t block airflow or reduce heat transfer. It does the opposite.

    The coating wicks into the coil’s structure at a molecular level, retightening the fin-to-tube bond and restoring the heat transfer that corrosion and age have degraded. It also forms a glass-like surface. This surface resists mold, moisture, bacteria, and the kind of environmental gunk that clogs fins and drives up maintenance costs.

    The result is a measurable 10% improvement in HVAC efficiency, less energy consumed per hour of operation, and a unit that performs closer to what it did the day it left the factory.

    What That Means for Your Bottom Line

    For business owners, the math is pretty straightforward. CoilSafe® is a one-time application on existing equipment. You avoid replacement, avoid major downtime, and avoid significant capital outlay. Most clients see a return on investment within 12 to 36 months through lower utility bills and reduced maintenance frequency.

    It also extends equipment life considerably. Corrosion is one of the primary reasons HVAC units get replaced before their time. Protect the coil, and you protect the investment you’ve already made in your equipment.

    And because CoilSafe® is antimicrobial and supports better indoor air quality, there’s a secondary benefit for your team and your customers: cleaner air circulating through a cleaner system.

    TL;DR

    If your HVAC system is more than a few years old and you haven’t thought about the coil, you’re probably leaving money on the table. Money in energy costs, in maintenance calls, and in equipment life. CoilSafe® is a simple, proven fix for a problem most people don’t know they have.

    Reach out to Coat Zone to learn more or find a dealer near you.

  • Coat Zone® Turns Circularity Metrics into Reality

    Coat Zone® Turns Circularity Metrics into Reality

    The HVAC industry is currently undergoing a massive shift. In December 2025, Trane Technologies, a global leader in climate innovation, announced a bold new roadmap for circularity. They aren’t just talking about “going green.” They are setting hard targets. Targets include generating 10% of revenue from circular products and services and doubling their use of circular materials by 2030.

    But what does this mean for the building owner in Houston, the facility manager in a coastal city, or the industrial plant operator?

    It means the era of “take, make, and waste” is ending. And at Coat Zone®, we are the bridge between these corporate sustainability goals and your actual mechanical room.

    The Circularity Strategy: Use Less, Keep Longer

    Trane’s circularity strategy is built on a few key pillars:

    1. Smart Services & Upgrades: Keeping products in use longer.
    2. Optimized Product Lifecycles: Reducing the need for new raw materials (like steel, copper, and aluminum).
    3. Recycled Content: Moving toward a supply chain that feeds back into itself.

    While a manufacturer like Trane focuses on how units are built, Coat Zone® focuses on how units survive. If circularity is about “maintaining and prolonging,” then our HVAC coatings are the ultimate circularity tool.

    Doubling Life: The Ultimate Circularity Metric

    Trane is pioneering “Circularity Impact Metrics” to track how its practices drive ROI. At Coat Zone®, our metrics have always been simple:

    • Extend useful life by 50% to 100%: By applying our CoilSafe® and ThermalBlock™ (or ThermalBlock by Coat Zone®) coatings, we effectively “pause” equipment degradation.
    • Restore, don’t replace: Instead of the carbon-intensive process of manufacturing a new 20-ton unit, shipping it, and scrapping the old one, we restore the efficiency of your existing asset to near-factory levels.

    Closing the Loop on Efficiency

    A major part of circularity is reducing “embodied carbon”—the emissions associated with making new stuff. Trane is targeting a 40% reduction in embodied carbon by 2030.

    When Coat Zone® treats a unit, we are directly supporting this goal. A unit that lasts 20 years instead of 10 represents a 50% reduction in the “manufacturing footprint” of that building’s HVAC needs over time. Furthermore, by reducing energy consumption by 15–30% through improved heat exchange and solar shielding, we reduce the operational carbon—the “Gigaton Challenge” Trane frequently references.

    The ROI of Circularity

    As Mauro J. Atalla, Trane’s Chief Sustainability Officer, noted: “There is no tradeoff between strong financial performance and bold sustainability leadership.”

    We agree. Our clients aren’t just choosing Coat Zone® for environmental reasons; they are doing so because deferring a $100,000 capital expense for 5–7 years makes perfect financial sense. It’s “Sustainability with ROI.”

    Moving Forward

    The conversation Trane Technologies has started is vital for our industry. It’s a call to rethink how we value our resources.

    At Coat Zone®, we are proud to provide the technology that allows facility managers to meet these new industry standards. Whether you are looking to align with global circularity protocols or simply want to “Run Less with Greater Efficiency,” we’re here to help you close the loop.

  • Go Beyond the Lab with ASTM G50

    Go Beyond the Lab with ASTM G50

    Why ASTM G50 Should Be the Gold Standard for Atmospheric Corrosion Testing

    When evaluating how metals and alloys will perform in real-world conditions, choosing the right test method is crucial. While accelerated laboratory tests have their place, the superior method for determining true, long-term atmospheric corrosion resistance is ASTM G50: Standard Practice for Conducting Atmospheric Corrosion Tests on Metals.

    This testing helps product manufacturers, metallurgical companies, and end users understand the wear and corrosion behavior of specified materials.

    What is ASTM G50?

    ASTM G50 is a comprehensive standard that outlines the general procedures and conditions for exposing metal panels and alloys to real-world weather and atmospheric conditions.

    • Objective: To evaluate the corrosion resistance of metals when exposed to the weather and to assess the relative corrosivity of the atmosphere at specific testing locations.
    • Methodology: It involves placing test panels in defined outdoor exposure sites to accumulate data for comparison purposes.
    • Key Consideration: Recognizing the highly variable and complex nature of the atmosphere (weather effects, industrial factors, natural elements), the standard recommends a multi-year exposure period to minimize the influence of short-term variations and provide a reliable assessment.
    • Quality Control: It mandates the use of control specimens—materials with established weathering characteristics—to ensure the test results are meaningful and comparable.

    The Real-World Relevance of ASTM G50

    The most significant advantage of ASTM G50 is its direct correlation to how a material will actually perform in service.

    • True Corrosivity Data: By exposing materials to actual rain, humidity, temperature cycles, UV light, pollution, and natural salt deposits, the test captures the synergistic effect of these variables. This provides data that is inherently more relevant than data from conditions simulated in a controlled environment.
    • Long-Term Performance: The test accounts for seasonal variability and requires multi-year exposure. The results are highly reliable for predicting a material’s long-term durability and lifespan in a specific atmospheric environment.
    • Material Selection and Site Evaluation:
      • It helps determine the most suitable metal or protective coating for products used outdoors (e.g., in construction, automotive, or infrastructure).
      • It can also be used to evaluate and compare the inherent corrosivity of different geographical locations before large-scale projects are built.

    Why ASTM G50 is Superior to ASTM B117 (Salt Spray)

    When the goal is to predict real-world atmospheric performance, ASTM G50 offers a level of fidelity that the commonly used ASTM B117, Standard Practice for Operating Salt Spray (Fog) Apparatus, cannot match.

    While ASTM B117 (often called the salt fog or salt spray test) is a valuable tool for quality control and detecting gross material defects, it is fundamentally an accelerated laboratory test with severe limitations for performance prediction.

    FeatureASTM G50 (Atmospheric Corrosion)ASTM B117 (Salt Spray/Fog)
    Test EnvironmentReal-world weather (rain, sun, temperature cycles, natural contaminants).Controlled, high-humidity fog of 5% neutral salt solution at constant temperature.
    RelevanceHighly correlated with real-world, long-term outdoor performance.Seldom correlated with performance in natural environments when used as stand-alone data.
    Test DurationTypically multi-year (e.g., 1, 3, 5 years).Typically measured in hours or days (e.g., 24, 100, 1000 hours).
    PurposeEvaluates true corrosion resistance and atmospheric corrosivity.Provides relative corrosion resistance information for comparison in a given test chamber.
    LimitationHigh variability if exposure time is too short.Poor predictability for long-term outdoor use without corroborating field data.

    As the ASTM B117 significance section notes, “Prediction of performance in natural environments has seldom been correlated with salt spray results when used as stand-alone data.” Furthermore, correlation should be considered “only in cases where appropriate corroborating long-term atmospheric exposures have been conducted.”

    The ultimate “corroborating long-term atmospheric exposure” is, in essence, an ASTM G50-style test. The salt spray test simply does not replicate the complex, cyclic drying/wetting, UV exposure, and contamination effects that occur naturally. It creates a highly specific, controlled environment, which is why its results often fail to translate to the real-world performance engineers truly need to know.

    Coat Zone® and ASTM G50

    Despite completing 6,000 hours of B117 testing, we believe the G50 evaluation provides a stronger case for the efficacy of CoilSafe®, which is why we conducted an ASTM G50-style marine exposure evaluation. This evaluation included 25,000 hours of natural marine exposure on Galveston Island, one of the harshest coastal environments. Third-party reporting showed that CoilSafe® exhibited complete corrosion resistance, whereas the uncoated coil on the same rooftop showed extensive deterioration consistent with chloride-driven corrosion. Learn more about the results of this evaluation here.

    Final Thoughts

    For any material designed to withstand the elements, relying solely on an accelerated lab test such as ASTM B117 is a risk. ASTM G50 provides the necessary rigor and realism by testing materials in their actual operating environment: the open atmosphere. By adhering to its procedures—including using controls and committing to multi-year exposures—companies can gain confidence that their material’s performance data is not only fast but also accurate.

    Sources

  • Reviving Aging Infrastructure Through Retrofits

    Reviving Aging Infrastructure Through Retrofits

    When overseeing vast portfolios of aging infrastructure, a critical challenge looms: the degradation of asset value driven by deteriorating Indoor Air Quality (IAQ) and unsustainable energy costs. While the initial impulse may be to prioritize costly, full-system replacements, the smart, sustainable solution lies in strategic retrofitting, specifically targeting the core failure point: your HVAC system.

    The reality is that legacy buildings must compete with modern, high-performance facilities. When tenants and occupants prioritize health and efficiency, an aging asset with compromised air quality and skyrocketing utility bills quickly becomes a liability. This is particularly true in the post-pandemic era, where IAQ has become a non-negotiable metric of building quality and resilience.

    The Dual Threat for Aging Infrastructure: Corrosion and Contamination

    According to Buildings magazine, older infrastructure presents significant IAQ challenges stemming from its foundational systems. The most critical issue lies within the HVAC coils and internal components. Over time, these systems face a dual threat:

    1. Corrosion and Efficiency Loss: In environments with high humidity or industrial pollutants, evaporator and condenser coils are prone to corrosion and fouling. This degradation weakens the critical bond between the fins and the copper tubing, severely impeding heat transfer. An inefficient coil forces the HVAC system to run longer and harder, wasting energy and accelerating equipment wear.
    2. Microbial Contamination: Damp, aged coil surfaces become ideal breeding grounds for mold, mildew, and bacteria. When the HVAC system is the source of contamination, poor IAQ becomes unavoidable, as it circulates particulate matter and potentially harmful biological agents throughout the occupied space. This directly impacts occupant health and productivity, diminishing the asset’s value.

    For an asset owner, replacing an entire HVAC system is often prohibitively expensive and disruptive. The alternative targeted, high-performance retrofit strategy is essential for achieving modern performance metrics without the massive capital outlay.

    The High-ROI Retrofit: A Solution-Focused Approach for Aging Infrastructure

    Coat Zone®’s advanced coatings are engineered to transform existing HVAC units into high-performance, long-life assets. This makes them the cornerstone of an intelligent retrofit strategy for aging infrastructure. Our solutions offer a proven path to simultaneously recover efficiency and dramatically improve IAQ.

    1. IAQ and Efficiency Recovery with CoilSafe® Plus™

    To address the internal threats to efficiency and health, we recommend CoilSafe® Plus™. This proprietary, ultra-thin, inorganic coating is applied directly to the coils. It then wicks deep into the structure to restore the critical heat transfer bond.

    • Efficiency: By restoring heat transfer, CoilSafe® Plus™ can help bring systems closer to their original factory efficiency. This often results in measurable reductions in kilowatt-hour usage and lower operating costs—the goal of any successful retrofit.
    • IAQ and Corrosion Defense: As an antimicrobial solution, CoilSafe® Plus™ creates a glass-like barrier that resists the adhesion of mold, mildew, bacteria, dirt, and debris. This permanent defense fights coil fouling and preserves optimal airflow. It also directly addresses the primary source of biological contaminants within the HVAC system, thereby improving IAQ for aging infrastructure.

    2. Asset Preservation with ThermalBlock™

    For units exposed to the elements, our ThermalBlock™ (or ThermalBlock by Coat Zone®) coating provides the external defense necessary to complete the retrofit. Applied to exterior cabinets and ductwork, this thermal radiant barrier blocks up to 93% of solar heat. By reducing the thermal load on the unit’s exterior, ThermalBlock™ (or ThermalBlock by Coat Zone®) reduces HVAC run-time, significantly extending the unit’s useful life and lowering energy consumption, especially during peak demand periods.

    The combination of internal protection (CoilSafe® Plus™) and external thermal defense (ThermalBlock™ (or ThermalBlock by Coat Zone®)) delivers an integrated, lasting retrofit solution that costs a fraction of unit replacement while providing a rapid, measurable ROI.

    Secure Your Consultation Today

    Leaders in the infrastructure sector cannot afford to let their aging assets become financial or health liabilities. A strategic HVAC retrofit using advanced coatings is the definitive way to improve IAQ, reduce energy consumption, and extend the lifespan of your critical equipment.

    Don’t wait for the inevitable costly replacement cycle. Engage in a solution-focused conversation about protecting and optimizing your portfolio.

    Schedule a consultation with Coat Zone® and one of our approved dealers today to learn how our coatings can secure your asset’s future.

    Sources

    1. Buildings. Breathing New Life into Old Buildings: Addressing Indoor Air Quality Challenges in Aging Infrastructure. [https://www.buildings.com/resiliency-sustainability/health-wellness-iaq/article/55323230/breathing-new-life-into-old-buildings-addressing-indoor-air-quality-challenges-in-aging-infrastructure].