Modern Temperature Control

Modern Temperature Control is a Merrimac HVAC and refrigeration outfit run by owner Tim, working across Massachusetts, New Hampshire, and Maine on everything from mini-splits and furnaces to restaurant chiller systems. What customers keep pointing to is how directly they reach him: several reviews describe Tim personally answering the phone, diagnosing a problem over the call, or showing up within a couple of hours on the hottest day of the year. A restaurant owner with three chiller units says he'd spent over a month unable to find anyone who understood the equipment before Tim's crew fixed it. One recent review describes calling for a second opinion after another company quoted a $5,000 refrigerant-leak repair; Tim inspected the same heat pump and said there was no leak to fix. A client who first hired the company for a ductless mini-split in 2023 says it has held up well since. Customers also mention him working through the holidays to finish an install and driving out for an elderly relative's air conditioner right before a heat wave. Two older reviews are different from the rest and worth knowing about. A late-2025 review disputes the quality of an installation and says the issue was ultimately resolved with a different company. A 2022 review describes a slow refund — a customer says a reimbursement check took over two weeks to arrive. For anything from a home mini-split to commercial refrigeration in the Merrimack Valley area, Modern Temperature Control is a strong call — Tim's personal follow-through on emergency calls is the reason people keep coming back; for a larger install, get the timeline and warranty terms in writing.