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Grantham Mountain Chimney Co. is an Upper Valley chimney service that, on its website, says it is owned and operated by career firefighter Ryan McGraw. The site lists Lebanon, Hanover, Plainfield, Cornish, Grantham and Norwich as its service area. A recent Google customer says Ryan solved a pellet stove that smoked on cold start-up, explained why it was happening, and sent a camera up after the sweeping to show the chimney was clean. That customer adds that he took care to keep the house clean during and after the sweep, and plans to use the company again next year. A recent Google customer says Ryan swept the chimney, explained its issues and put a camera up it, which made things make more sense to them.
Truly incredible service from a genuine professional! Ryan did a great job and solved the issue of my pellet stove smoking on cold start up. He explained why it was happening and sent a camera up after the sweeping to show me that it was clean. I've never had a chimney sweep do this before now. He took great care in making sure the house stayed clean during and after the sweep. I can't say enough good things and would highly recommend Grantham Mountain Chimney Co. to anyone in need of Chimney service. I will be using them again next year.
Ryan did an incredible job sweeping the chimney and explaining everything to me about the chimney and its issues. I've also never seen someone put a camera up the chimney before which made things make so much more sense!
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Certified attributes are verified against the public registry. Others are the business's own statement.
1 change recorded — last scanned Oct 30, 2026.
