We make your existing HVAC equipment much more efficient and last longer. GreenSpark provides leading-edge energy-efficiency retrofit and demand-response solutions for already-installed equipment: - HVAC (gas, oil, electric) - Boilers, water heating, - Heat Pumps (including geothermal) - Commercial Refrigeration We offer turnkey project services from facility evaluations and audits, to vendor selection, hardware sales, training, rebate processing, and financing. Our projects typically have paybacks of 6-36 months - and even shorter when utility and tax incentives are added. Over the last 24 months, we have completed thousands of retrofits for projects covering nearly 12 million sf of buildings.