Tankless water heater is a Ferrari and due diligence is challenging. Called my local heating guy....no joy; cannot handle this; service call $69. Called the manufacturer and given a number in Richmond, VA. The Richmond folks referred me to Nokesville, service call $60. Identified coild problems and a leak which they told me had sealed itself. I saw the dripping water.
Decided to replace the unit and recalled DB, who is my usual plumber. Turns out they do install these units. Dave and Tommy came, assessed, made a plan. Ordered new heater, installed it with proper plumbing. Gave me a tutorial and now I understand maintenance. No one, from initial installation to now had ever told me the unit needed deposits from hard water removed!!
The best thing about DBs is that, not only do they know how to fix a complex problem, they bring the homeowner in as part of the team to minimize future problems.
Trustworthy? You bet! 110% on every job. You'll see them a lot in Occoquan.
We are fans.
Mary Ann Phelps, Occoquan