Licensed plumbers for emergencies, slab leaks, drain cleaning & water heater services serving Portsmouth and surrounding communities in New Hampshire.
Comprehensive plumbing solutions tailored to Portsmouth properties. Click any service to learn more.
Around-the-clock emergency plumbing for burst pipes, slab leaks, sewer backups, gas leaks, and water heater failures. Our licensed emergency plumbers respond fast to stop damage and restore your plumbing.
Trenchless sewer repair replaces damaged sewer lines without digging up your yard, driveway, or landscaping. We use pipe lining and pipe bursting methods to save time, money, and the mess of conventional excavation.
Video sewer inspection reveals exactly what is happening inside your sewer line — no guesswork, no unnecessary excavation. Essential for pre-purchase inspections and diagnosing recurring sewer problems.
Water line breaks can disrupt your entire home's water supply. Our licensed plumbers repair or replace damaged main lines and service connections quickly, restoring full water pressure and flow to your property.
Professional pipe repair for leaks, corrosion, and breaks in supply lines, drain lines, and waste pipes. Our licensed plumbers diagnose the cause and perform lasting repairs using quality materials.
Upgrade to on-demand hot water with professional tankless water heater installation. Our plumbers assess household demand, recommend the right model, and install with all required gas or electrical connections.
Sewer line problems cause backups, odors, and potential health hazards. Our plumbers use video cameras to inspect the line, identify the damage, and repair or reline the pipe — often without full excavation.
Emergency sump pump repair when flooding threatens your basement or crawl space. We diagnose failed floats, clogged intakes, and seized impellers fast — getting your pump back online before water damage spreads.
Sump pump installation and replacement for basements and crawl spaces prone to flooding. We size the right pump, install primary and battery-backup units, and ensure reliable operation before every rainy season.
Expert slab leak detection and repair using electronic sensors and thermal imaging to pinpoint leaks under your foundation. We perform minimally invasive repairs to protect your structure and stop water waste.
Find hidden leaks before they cause serious damage. Our leak detection specialists use thermal cameras and electronic listening devices to locate leaks behind walls, under slabs, and underground with precision.
Professional gas leak detection using calibrated detectors and pressure testing to find leaks in gas lines, connections, appliances, and meters. We locate the leak source precisely and recommend repairs immediately.
Whole-home and partial repiping to replace aging galvanized, polybutylene, or deteriorated pipes with modern long-lasting materials. Repiping eliminates chronic leaks, low pressure, and discolored water permanently.
Professional drain cleaning using hydro-jetting and snaking to clear slow and clogged drains throughout your home. We remove grease, hair, roots, and mineral buildup — restoring full flow and preventing backups.
Garbage disposal repair, replacement, and installation for kitchen sinks. We fix jammed, leaking, and failed units — or install new disposals with proper P-trap and dishwasher connections.
When your boiler fails in winter, you need a plumber who understands hydronic systems. Our licensed technicians diagnose and repair all major boiler brands, restoring efficient heat to your home or building fast.
Fast water heater repair for tank and tankless units. We diagnose and fix pilot light failures, thermostat issues, heating element problems, pressure relief valve malfunctions, and sediment buildup quickly.
Backflow testing is required annually in many jurisdictions. We test your preventer, document the results, and submit paperwork to your local water authority — keeping you in compliance and your drinking water safe.
Regular grease trap cleaning for restaurants and food service operations. We pump and scrape grease traps on schedule and handle compliance documentation for health department inspections.
Full-service commercial plumbing for restaurants, offices, retail, multi-family, and industrial properties. We handle new construction, maintenance contracts, fixture replacement, and urgent repairs.
Reliable toilet repair and installation for running toilets, phantom flushes, rocking toilets, weak flushes, and leaking seals. We diagnose the root cause and repair or replace components quickly and affordably.
When snaking is not enough, hydro jetting clears the pipe completely. Our professional jetters use pressurized water to blast away grease, scale, and root intrusion — restoring full pipe capacity for years.
When your water heater reaches the end of its life, we make replacement easy. Our plumbers handle everything — disconnection, removal, installation, and final testing — so you have reliable hot water again fast.
A dripping faucet wastes hundreds of gallons per month. Our licensed plumbers diagnose and repair kitchen, bathroom, and utility faucets of all brands and types — stopping leaks and restoring smooth operation.
Gas line leaks demand immediate professional attention. Our licensed plumbers diagnose and repair gas line failures safely, using proper materials and testing to ensure your gas system is secure and code-compliant.
Magnet Plumbing brings professional-grade plumbing technology to every job in Portsmouth (pop. 23,288). Electronic leak detectors, video pipe inspection cameras, and pressure testing equipment allow us to see inside your plumbing system without guesswork, giving us the information we need to recommend the most effective and cost-efficient solution.
Technology only matters when the plumbers using it are skilled. Our Portsmouth crews combine advanced diagnostic tools with years of hands-on experience and ongoing training in current plumbing techniques and New Hampshire code requirements. That combination of technology and expertise is what separates Magnet Plumbing from companies that rely on guesswork.
We are committed to delivering exceptional plumbing services that protect your property and your peace of mind.
We use professional-grade pipes, fittings, fixtures, and water heaters rated for long-term performance. Combined with skilled installation, our repairs and replacements are built to hold up for years without repeat problems.
We stand behind our work. If a repair or installation does not perform as expected within the warranty period, we come back and make it right at no cost. Your satisfaction is our ultimate measure of success.
We use thermal imaging cameras, electronic moisture meters, and acoustic listening devices to find hidden leaks behind walls, under slabs, and underground — without tearing into your property unnecessarily.
Plumbing emergencies do not wait for business hours and neither do we. Our emergency crews are on call around the clock — burst pipes, gas leaks, and flooding get a fast response any time you call.
Our plumbers live and work in the communities they serve. They understand local water quality, regional pipe standards, and the specific plumbing challenges common to your area — giving you faster, better solutions.
Have questions about plumbing in Portsmouth? We have answers.
Chemical drain cleaners can damage older pipes in Portsmouth homes, especially PVC, brass, or aging galvanized plumbing. The caustic chemicals can eat through pipe walls over time and are hazardous if they splash on skin or eyes. A professional drain cleaning by Magnet Plumbing is safer, more effective, and prevents pipe damage — costing less in the long run.
Signs of a slab leak in Portsmouth homes include unexplained increases in your water bill, warm or wet spots on the floor, the sound of running water when all fixtures are off, cracks in the foundation or walls, and low water pressure. If you notice these symptoms, call a plumber for professional slab leak detection before the damage worsens.
To prevent frozen pipes in Portsmouth, insulate exposed pipes in unheated areas like garages, crawl spaces, and attics. Keep cabinet doors under sinks open during cold snaps. Let faucets drip slightly during freezing temperatures. If a pipe does freeze, call Magnet Plumbing immediately rather than attempting to thaw it yourself to avoid a burst.
Trenchless sewer repair in Portsmouth replaces damaged sewer lines using pipe lining or pipe bursting methods — without digging up your yard, driveway, or landscaping. It works for most sewer line problems including cracks, root intrusion, and offset joints. Magnet Plumbing uses camera inspection to confirm trenchless repair is the right approach for your specific line condition.
Plumber rates in Portsmouth typically range from $100 to $250 per hour depending on the type of work and time of day. Common jobs like drain cleaning run $150 to $300, while slab leak repair and repiping projects cost significantly more. Magnet Plumbing provides free estimates so you know the full cost before any work begins.
Most Portsmouth homeowners benefit from professional drain cleaning every 1 to 2 years as preventive maintenance. Homes with large families, frequent cooking, or older plumbing may need service more often. Tree roots, grease buildup, and hair are the most common causes of drain problems in Portsmouth. Magnet Plumbing uses hydro-jetting and snaking to thoroughly clear all drain types.
Honest feedback from homeowners who trusted Magnet Plumbing with their plumbing projects.
"We were having a lot of problems with our old plumbing in our house and these guys were able to fix it. Very professional, polite and fair prices. We were really fortunate to have found them. Extremely recommended!"
"Had a new tankless water heater installed and could not be happier. The plumbers were punctual, clean, and walked me through the warranty and maintenance before leaving. Highly recommend for any water heater project."
"Came out the same day to replace a failed sump pump during a storm. Saved our basement. Fair pricing and very fast response."
We also provide plumbing services in these neighboring communities.