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A.L.I. Plumbing Services is a Nashua, NH-based plumbing company run by owner Keith A. Killgren, Sr., operating in the area since 2009 according to its BBB registration. The business holds a New Hampshire plumber license (MBE2501728) that the state's licensing registry independently verified as active, and carries an A+ accredited rating with the Better Business Bureau. Customers who have hired A.L.I. consistently describe Keith doing the hands-on work himself and doing it well: one reviewer described him soldering new ball valves onto copper hot and cold lines for a shower renovation in August 2025, calling the job efficient, professional and affordable. Another, in a 2025 review, said he ran new gas piping to connect a generator and that the work passed Fire Department inspection. A third reviewer, in a 2022 review, praised his responsiveness after another plumber failed to show up, saying Keith fit them in the next morning and finished quickly. Google shows a 3.6-star average from 22 ratings. Before booking, it's worth knowing the review history is still fairly thin: just three detailed reviews on file, spanning 2022 to 2025. Ask about references for larger jobs like the bath remodeling and generator/gas work the business also advertises. A.L.I. Plumbing Services is a solid call for routine plumbing repairs and gas-line work in the Nashua area, backed by a verified state license and a small but consistent track record of satisfied customers.
On 8/18/2025, 1st work site of his day, keeping his word as arranged by previous day's phone call [Sunday 8/17th], Keith arrived to solder new ball valves onto the copper pipes to our hot and cold lines to our upstairs shower-stall in bathroom. Efficiently and quite professionally and affordably, he performed this installation. !00% we are satisfied with Keith's workmanship. We have found our new trustworthy plumber. Sincerely, thank you.
Keith did an awesome job adding 1 inch black pipe to connect our generator. He kept us apprised of what he was doing. He was professional and friendly. His work passed with the Fire Dept inspection. Great job!!
I had another plumber not show up on me. My Mother-in-law recommended Keith. We called him after hours and he was able to fit us in the very next morning. He was early and was done in record timing. I appreciate the fast response and will be using him for all our future needs. Thank you soooo much!
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1 change recorded — last scanned Sep 14, 2026.
Water heater work5.0
Dual-state active licensing4.7
Fixes what others could not4.6
Active NH license2.5
