C&D Mechanical LLC

C&D Mechanical LLC is a New Hampshire HVAC and plumbing contractor working residential and light-commercial jobs from the Lakes Region south. Its website names Derek Mills and Chris Wheeler as the two behind it, says the LLC was established in 2022, and describes the business as family-owned and operated by people born and raised in New Hampshire, with more than ten years of experience between the team. The hire is mostly heating and cooling: mini-split and heat-pump installation, forced hot air and central AC, boilers and rooftop units, with plumbing, water heaters and whole-home water filtration alongside. Stated coverage runs Concord, Manchester, Nashua, Salem, Laconia and Bow. Customers who wrote about their jobs describe the same two names doing the work. One homeowner had two Mitsubishi mini-splits fitted on a Saturday morning on the coldest day of the year and said the garage and upstairs were warm afterwards. Another had a furnace and air conditioner replaced and reported the AC fixed quickly; a third had a furnace replaced and central air added and called the improvement tremendous. A 2025 reviewer hired them for plumbing problems and described an on-time arrival, a clear explanation of the repairs needed, and a tidy work area at the end. A 2024 customer had an exterior faucet's pipework replaced and the furnace and AC inspected, with maintenance recommendations to follow. The same notes recur: cleaning up afterwards, questions answered before the job began, and one homeowner citing a fair price and a follow-up call once the work was done. Another mentions a veteran discount. All ten Google ratings are five stars, and the write-ups vary in length and name specific jobs and equipment. Two things are worth pinning down before booking. The ten-plus-years figure belongs to the owners rather than the company, which dates to 2022 — so ask how many jobs of your type they have run under this business. And the site offers after-hours emergency service to existing customers, which matters if your first call is a January no-heat call. The right fit for a Concord-to-Nashua homeowner who wants mini-splits, a heat-pump conversion or a furnace-and-AC swap handled by the owners themselves. Estimates are advertised free — get yours in writing, with the equipment models and the scope spelled out.