For clients seeking to improve the efficiencies of their existing HVAC system—whether they be conventional or next-generation green systems—Donnelly Sustainable Energy Services is pleased to offer a suite of green maintenance services. These services are available individually or as part of our complete Green Plus maintenance program.

  • Indoor Air Quality / Duct Cleaning
    Donnelly SES offers a full spectrum of Indoor Air Quality services to better serve our clients’ environmental concerns, including the performance of indoor air quality (IAQ) studies performed in accordance with AIHA and ASHRAE standards.

    Our specially trained staff utilizes Donnelly’s vast HVAC technical experience to tackle the most complex duct cleaning and indoor air quality issues. Our distinct advantage over a duct cleaning firm is that in addition to cleaning and sanitizing your HVAC system, we can test for proper operation and performance upon completion.

  • Refrigerant Conversions / Leak Detection
    Donnelly SES is a proactive leader in the phase out of HFC/CFC refrigerants throughout the metropolitan area.

    Our staff can assist you with the latest technologies in refrigerant management and auditing, leak detection, repair, and refrigerant conversions on all types of package and unitary equipment.

    Our strategic alliance with DuPont enables our staff to provide the broadest range of refrigerant solutions for all new and existing equipment.

    Click here to read a case study detailing our use of next-
    generation refrigerants. We keep abreast of the latest advances to ensure that we offer our clients the most cost-effective and sustainable refrigerant conversion solutions.

  • Retro-Commissioning (RCX)
    Much like a piano that periodically needs returning, an HVAC system needs to be commissioned on a periodic basis to maintain optimal performance. Donnelly SES offers routine commissioning as well as retro-commissioning for buildings/tenants that have never been commissioned.

    A commissioning process conducted by our experienced team—which includes factory-trained Local 638 technicians—will assess the numerous variables that impact a building’s HVAC system and identify not only problems that need to be corrected, but what operational and maintenance improvements will yield the greatest improvements in efficiency with respect to cost.

    Typical results from implementing the recommendations of a commissioning include improvements in indoor air quality, comfort, controls and energy and resource efficiency. In some cases, these improvements have been substantial.

  • Energy Services Agreements
    Donnelly offers several levels of Energy Services Agreements, all designed to save our clients money and energy through proactive maintenance, including services such as annual energy benchmarking, utility bill analysis and energy audits.

Green Plus Maintenance Program
Green Plus is our "all-in-one" worry-free maintenance program.

Contact us to learn more.