CMS Plumbing, Heating, and Cooling

CMS Plumbing, Heating, and Cooling is a Wilmington shop that's grown from plumbing calls into full HVAC installs — Mitsubishi heat pumps, ductless mini-splits, hybrid water heaters — while keeping its Massachusetts plumbing license active and an A+ rating with the BBB. The volume of written feedback is unusual for a contractor this size: 388 reviews dating back to 2013, and 51 of them landed in just the last six months. The same names come up across years of work — Chris DeChiara, Drew, Don, Troy, Adam, Sean — and the same pattern repeats: a technician explains the diagnosis and the price before starting, whether it's a leaking pressure-relief valve, a new kitchen faucet, or a full heat-pump water heater swap. On a 100-degree day with the AC dead, one reviewer said Don had cold air blowing again within 30 minutes of arriving. The record isn't spotless. One reviewer said a brand-new system CMS installed developed problems after a year, and described the company's maintenance agreement and customer service as unhelpful once the trouble started — the sharpest complaint on file. A separate, more recent review noted pipes were still gurgling and banging three days after a repair. Both are the exception in a record that otherwise runs almost entirely five-star; several customers mention using CMS across two different homes or switching to them after a longtime family plumber retired. On the neighborhood side, CMS also turns up as a name people pass along directly — a North Reading Nextdoor post recommends them by name for showing up in the window they promise, and a Reddit commenter called them "solid" for North Shore work. For plumbing repairs, water heater swaps, and HVAC installs or service around Wilmington and the North Shore, CMS has a long, heavily reviewed track record of showing up fast and pricing clearly before the work starts. If you're buying a full system from them, it's worth asking exactly what the maintenance agreement covers, given the one account of it falling short after the first year.