🔧 Official Rankings
10 Best Plumbers in Windham, NH (August 2026)
We compared 8 plumbers serving Windham and Rockingham County, New Hampshire, and ranked the top providers by verified reviews, ratings, and local reputation — 1,051 customer reviews in all.
The 8 listed below hold an average rating of 4.9 out of 5, led by Mainline Plumbing. Updated for August 2026.
- Plumbers ranked
- 8
- Average rating
- 4.9★
- Reviews analyzed
- 1,051
- Area codes
- 603, 978
#1
Mainline Plumbing
⭐ 5.0 · 646 reviews
71 Mammoth Rd, Londonderry, NH 03053
#2
#3
#4
#5
Extra Time Plumbing & Heating
⭐ 5.0 · 60 reviews
Jackman Ridge Rd, Windham, NH 03087
#6
Thompson's Sewer Service Inc.
⭐ 4.9 · 36 reviews
17 Roulston Rd, Windham, NH 03087
#7
Robert A Sammataro Plumbing & Heating
⭐ 5.0 · 1 reviews
8 Dunraven Rd, Windham, NH 03087
#8
Penguin plumbing heating and cooling
⭐ 4.2 · 10 reviews
6 London Bridge Rd, Windham, NH 03087
Plumbers listed here serve Windham, Rockingham County, and nearby ZIP codes including 03087.