Mike Cappuccio Welcomes David Sampaio of Sum Zero Energy Systems in Holliston, MA

David Sampaio is the owner of Sum Zero Energy Systems in Holliston, MA. David attended the Dominate Ductless live seminar a couple of years ago and talked with Michael recently about the impact the training has had on the growth of his ductless heat pump business since then. Click here to visit Sum Zero Energy System's website. Click here to see David's LinkedIn profile. Mike Cappuccio is the founder of Dominate Ductless, a training and consultancy firm focused on helping HVAC distributors and manufacturers of ductless heat pumps position and train their contractors for rapid growth. Dominate Ductless offers group workshops for contractors as well as self-paced, online courses focused on all aspects of running and growing an HVAC contracting company. Click here to review the courses. Mike is also the founder of N.E.T.R., Inc., a Boston-area HVAC contractor specializing in the installation of ductless heat pumps where he grew the business to $15MM before selling it to Sila in 2021.