We have an issue with the newly installed HWT elements for our in-floor heating system, floor remained cold.ANDREW came and quickly identified and fixed the problem, by replacing the new top element that was not working (faulty) with another new one. So far, so good, floor is nice and warm, again!:)VERY professional, knowledgeable and expert in what he does, polite, friendly, meticulous, pleasant to deal with, and completed the job efficiently and neatly. Excellent customer service, highly recommended, two thumbs up!Very happy repeat customers, Erich & JoyPS.A SPECIAL THANK YOU to:JENESSA (Plumbing Dept.) for your patience, sunny personality, and for being so pleasant to deal with.:)DEBORA (Electrical Dept.) friendly and very efficient, also pleasant to deal with.:)Whenever I phoned High Mark Plumbing and Electrical, for service, it really is a real pleasure to make those calls and be treated in such a wonderful manner! Excellent job ladies, you two are definitely a huge asset to the company!