What is the phone number for Mainline Plumbing?

(603) 686-7222. You call Mainline Plumbing directly; AssistAnt never sits in the middle.

Where is Mainline Plumbing?

Mainline Plumbing serves Londonderry, NH as a service-area business (no street address shown).

Is Mainline Plumbing still in business?

Listed from public business records, last updated October 13, 2026. Call to confirm.

Is Mainline Plumbing licensed and insured?

Not verified by AssistAnt yet. Ask for proof of license and insurance before you hire.

Who else is near Londonderry?

AssistAnt lists 158 plumbers near Londonderry. Closest to Mainline Plumbing: Joseph Labrie Plumbing & Heating Services (2.7 mi), Penguin plumbing heating and cooling (3.0 mi), GM Sweet Plumbing LLC (3.6 mi).

Mainline Plumbing · (603) 686-7222

AssistAnt › Pro directory › Londonderry, NH

What we do

Services

🛠️Plumbing

Checked, with dates

🧾 Trust Card · 2 receipts

Listed in the AssistAnt 24/7 directoryBusiness record from Overture Maps open business data (CDLA-Permissive-2.0).
Oct 13
Shown as open for business in the source dataOperating status in the business record.
Oct 13

Not verified yet: Owner has not confirmed this listing yet; License and insurance not reviewed by AssistAnt yet; No AssistAnt job history linked to this listing yet.

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In their words

Customer reviews

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Where

Service area

Map of the Londonderry, NH area (© Google). Is this your business? Claim it and put up your own photos →

About Mainline Plumbing

Mainline Plumbing is listed on AssistAnt for plumbing in Londonderry, NH.

Built from public business information. Call to confirm before you go.

Contact

Phone: (603) 686-7222
Website: callmainline.com
Location: Londonderry, NH, 03053 (service area)
Booking: Not bookable online yet. Call the business directly.

Listed from public recordsNot verified yet. Details come from open business data and may be out of date.See the Trust Card: what we checked, how and when →

Quick facts about Mainline Plumbing

What is the phone number for Mainline Plumbing?: (603) 686-7222. You call Mainline Plumbing directly; AssistAnt never sits in the middle.
Where is Mainline Plumbing?: Mainline Plumbing serves Londonderry, NH as a service-area business (no street address shown).
Is Mainline Plumbing still in business?: Listed from public business records, last updated October 13, 2026. Call to confirm.
Is Mainline Plumbing licensed and insured?: Not verified by AssistAnt yet. Ask for proof of license and insurance before you hire.
Who else is near Londonderry?: AssistAnt lists 158 plumbers near Londonderry. Closest to Mainline Plumbing: Joseph Labrie Plumbing & Heating Services (2.7 mi), Penguin plumbing heating and cooling (3.0 mi), GM Sweet Plumbing LLC (3.6 mi).

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AI Visibility Score

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What the AIs say

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Other plumbers nearby

Joseph Labrie Plumbing & Heating ServicesHudson, NH · 2.7 mi
Penguin plumbing heating and coolingWindham, NH · 3.0 mi
GM Sweet Plumbing LLCLitchfield, NH · 3.6 mi
Daigle Plumbing, Heating & CoolingDerry, NH · 4.2 mi
Southern New Hampshire Plumbing And HeatingLondonderry, NH · 5.5 mi
Jay Elston Plumbing & Heating LlcHudson, NH · 5.7 mi

All plumbers near Londonderry, NH (158) →

Every trade and local freelancer in Londonderry →

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