🔧 Official Rankings
10 Best Plumbers in Londonderry, NH (August 2026)
We compared 10 plumbers serving Londonderry and Rockingham County, New Hampshire, and ranked the top providers by verified reviews, ratings, and local reputation — 6,675 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by Mainline Plumbing. Updated for August 2026.
- Plumbers ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 6,675
- Area code
- 603
Mainline Plumbing
⭐ 5.0 · 646 reviews
71 Mammoth Rd, Londonderry, NH 03053
Southern New Hampshire Plumbing and Heating
⭐ 4.9 · 458 reviews
39 Rockingham Rd, Londonderry, NH 03053
Granite State Sewer & Drain Cleaning
⭐ 4.9 · 408 reviews
4 Candy Ln Unit 10, Hudson, NH 03051
Rob Roy Mechanical
⭐ 4.9 · 259 reviews
86 Nashua Rd #1279, Londonderry, NH 03053
Extra Time Plumbing & Heating
⭐ 5.0 · 60 reviews
Jackman Ridge Rd, Windham, NH 03087
Daigle Plumbing, Heating & Cooling
⭐ 4.8 · 1003 reviews
11 Windham Rd, Derry, NH 03038
Derry Plumbing & Heating
⭐ 4.8 · 235 reviews
71 Birch St Ste A, Derry, NH 03038
Paul The Plumber
⭐ 4.7 · 3483 reviews
111 Franklin St Ext, Derry, NH 03038
Plumbers listed here serve Londonderry, Rockingham County, and nearby ZIP codes including 03053.