Reliance Home Comfort Executive and Leadership Team

September, 2026

Leadership Overview

Reliance Home Comfort has 6 executives leading key functions including financial strategy, revenue growth, corporate administration, and specialized plumbing services.

Committed to superior residential climate control, Reliance Home Comfort delivers essential water heater and HVAC maintenance across Canada to ensure long-term household comfort and operational efficiency.

Leadership Roles at Reliance Home Comfort

  • Chief Financial Officer - Demi Tsioros
  • Office Of The President - Karen Bisson
  • Office Of The President - Nicole Cousley
  • Office Of The President - Gemma Willson
  • President, Mackenzie Plumbing & Heating Ltd (1989) - Douglas MacKenzie
  • Chief Revenue Officer & Manager - William Lin
  • Demi Tsioros - Chief Financial Officer

    Demi Tsioros, the Chief Financial Officer at Reliance Home Comfort, directs all fiscal planning and capital allocation strategies. Overseeing the financial health of the organization, the Chief Financial Officer manages complex budgeting processes for rental and maintenance portfolios. This leadership role involves rigorous analysis of market trends across Ontario and western Canada to optimize revenue streams. By implementing robust financial controls, Demi Tsioros ensures the long-term sustainability of the company's residential service model. The Chief Financial Officer collaborates with the board to align investment priorities with the broader corporate mission of providing reliable home comfort solutions. Through precise oversight of accounting operations and risk management, Tsioros maintains the fiscal integrity required to support large-scale infrastructure investments. This executive leadership guarantees that the company remains competitive while delivering consistent value to stakeholders throughout the Canadian market.

    Karen Bisson - Office Of The President

    Karen Bisson, the Office Of The President at Reliance Home Comfort, manages internal governance and cross-departmental operational alignment. Overseeing the execution of corporate policies, the Office Of The President ensures that all business units adhere to the company's high standards for residential maintenance and service. This leadership role involves facilitating communication between executive teams to streamline decision-making processes. By fostering a culture of operational excellence, Karen Bisson supports the delivery of HVAC and water heater solutions across the national footprint. The Office Of The President monitors performance metrics to identify opportunities for process improvement and efficiency gains. Through diligent coordination of administrative functions, Bisson maintains the organizational structure necessary to support rapid growth in the Canadian market. This executive leadership role remains vital for ensuring that the company's strategic vision translates into tangible service outcomes for every residential client.

    Nicole Cousley - Office Of The President

    Nicole Cousley, the Office Of The President at Reliance Home Comfort, directs strategic initiatives focused on customer experience and service quality. Overseeing the implementation of standardized maintenance protocols, the Office Of The President ensures that every residential client receives consistent, high-quality support for heating and cooling systems. This leadership role involves managing complex stakeholder relationships and ensuring that operational workflows remain agile. By prioritizing service reliability, Nicole Cousley strengthens the company's market position in Ontario and beyond. The Office Of The President collaborates with technical teams to integrate new technologies into the existing service framework, enhancing overall system performance. Through careful oversight of service delivery standards, Cousley drives the company's commitment to long-term household comfort. This executive role ensures that the organization remains responsive to evolving consumer needs while maintaining the operational rigor required for sustained industry leadership.

    Gemma Willson - Office Of The President

    Gemma Willson, the Office Of The President at Reliance Home Comfort, manages organizational development and human capital strategies. Overseeing the alignment of workforce capabilities with the company's service goals, the Office Of The President ensures that technical teams possess the expertise required for complex HVAC and water heater maintenance. This leadership role involves designing training programs that elevate service standards across all regional offices. By cultivating a high-performance culture, Gemma Willson supports the company's mission to provide reliable residential solutions. The Office Of The President monitors employee engagement and operational productivity to ensure that the company meets its ambitious growth targets. Through strategic talent management, Willson secures the human resources necessary to maintain a competitive edge in the Canadian residential services market. This executive leadership role remains essential for building the internal capacity required to support the company's long-term strategic objectives.

    Douglas MacKenzie - President, Mackenzie Plumbing & Heating Ltd (1989)

    Douglas MacKenzie, the President, Mackenzie Plumbing & Heating Ltd (1989) at Reliance Home Comfort, directs specialized plumbing and heating operations. Overseeing the integration of legacy technical expertise into the broader corporate service model, the President, Mackenzie Plumbing & Heating Ltd (1989) ensures that complex mechanical systems receive expert care. This leadership role involves managing specialized field teams to deliver high-precision maintenance and installation services. By leveraging decades of industry experience, Douglas MacKenzie enhances the company's technical capabilities in the plumbing and heating sector. The President, Mackenzie Plumbing & Heating Ltd (1989) coordinates with corporate leadership to ensure that specialized service offerings align with the company's overall residential strategy. Through rigorous oversight of field operations, MacKenzie maintains the high quality of service that defines the company's reputation. This executive role provides the technical foundation necessary for delivering reliable, long-term home comfort solutions to a diverse client base.

    William Lin - Chief Revenue Officer & Manager

    William Lin, the Chief Revenue Officer & Manager at Reliance Home Comfort, drives all sales initiatives and customer acquisition strategies. Overseeing the expansion of rental and maintenance service agreements, the Chief Revenue Officer & Manager ensures consistent growth across diverse regional markets. This leadership role involves architecting high-impact marketing campaigns that highlight the value of HVAC and water heater systems. By analyzing consumer demand patterns, William Lin optimizes the sales funnel to maximize market penetration. The Chief Revenue Officer & Manager coordinates with regional teams to refine service delivery models, ensuring that every customer interaction supports the company's reputation for reliability. Through strategic partnerships and innovative pricing structures, Lin secures a dominant position in the residential services sector. This executive focus on revenue generation directly supports the company's ability to scale operations effectively while maintaining high standards of service excellence.

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    Frequently Asked Questions Regarding Reliance Home Comfort Top Executives and Leadership Team

    Who leads Reliance Home Comfort?
    Reliance Home Comfort is led by Demi Tsioros (Chief Financial Officer), along with executives such as Karen Bisson (Office Of The President) and Nicole Cousley (Office Of The President).
    Who is part of Reliance Home Comfort’s executive team?
    The executive team of Reliance Home Comfort includes leaders such as Demi Tsioros (Chief Financial Officer), Karen Bisson (Office Of The President), Nicole Cousley (Office Of The President) and other senior executives.
    How many executives does Reliance Home Comfort have?
    Reliance Home Comfort has 6 executives leading key business areas.
    What roles are included in Reliance Home Comfort’s leadership team?
    The leadership team of Reliance Home Comfort includes roles such as Chief Financial Officer, Office Of The President, Office Of The President, Office Of The President, President, Mackenzie Plumbing & Heating Ltd (1989).