603 Chimney & Dryer Vent is a Londonderry, NH outfit that homeowners increasingly call for a second opinion, and reviewers say that's exactly what they get. Across 46 Google reviews since 2021, averaging 4.9 stars, a recurring story shows up: a competitor quotes thousands for chimney work, and Dave and his crew find the job is smaller than advertised.
The company describes itself as family-owned, serving Southern New Hampshire since 2013 (it also claims "over 25 years of experience," though the two claims don't quite line up). Its work covers chimney sweeping, inspections, repair and relining, plus dryer vent and air duct cleaning, with Dave and crew members named in reviews as Mike, Randy, Joe and Jay handling the jobs.
The honesty theme is specific, not vague. One homeowner was told by another company that a 19-year-old boiler and a 70-year-old fireplace were serious fire hazards needing thousands of dollars in work; 603 found the fireplace was fine and recommended only a reasonably priced parging job. Another got a quote $3,000 higher elsewhere for a stainless-steel liner instead of a brick rebuild. A third had two other chimney companies no-show on scheduled appointments, then got a same-day response and quote from Dave. These aren't isolated compliments; they're the same pattern across different customers and different years, right up through reviews from this past summer.
Reviewers are just as consistent about the crew showing up on time, explaining the work, and leaving job sites clean, with one homeowner saying a dusty chimney project left their space cleaner than it started. A 2021 local news story quoted the business recommending annual chimney inspections during a spike in furnace-related calls, which lines up with how customers describe them: routine maintenance and repair, not a one-time gimmick.
It isn't spotless on price. One customer's builder called a $1,425 quote to replace 25 feet of dryer vent overpriced, estimating the real cost closer to $550 in materials and labor. Two other reviewers separately called the company "a little expensive" or "a little pricey," even while praising the finished work, which is worth asking about upfront, especially for vent or duct jobs.
For a homeowner weighing a chimney inspection, an overdue dryer vent cleaning, or a second opinion after another company's alarming quote, 603 Chimney has a long, consistent record on the things that matter most: showing up, explaining the work, and not overselling. Get a specific, itemized quote before booking, particularly for vent replacement work.
