The Best Plumbing Contractors in Southwest Harbor, ME

Compare the highest-rated plumbing professionals in Southwest Harbor, Maine. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Harbor Plumbing & Heating

4.8
(42 reviews)
Verified

A full-service plumbing and heating contractor serving Southwest Harbor and Mount Desert Island, offering comprehensive residential and commercial services with 24/7 emergency response. Known for expertise in water heater installation, drain cleaning, and addressing the unique plumbing challenges of older coastal homes.

324 Main Street, Southwest Harbor, ME 04679

Specialties & Features

24/7 Emergency Service
Water Heater Installation & Repair
Drain Cleaning
Pipe Replacement
Leak Detection

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Mount Desert Island Plumbing & Heating

4.6
(67 reviews)
Verified

A well-established provider for the entire Mount Desert Island region, including Southwest Harbor. They specialize in both new construction plumbing and repairs for the area's historic properties. Their team is highly experienced with local codes and the specific issues caused by the coastal climate, such as corrosion.

1219 Main Street, Route 102, Southwest Harbor, ME 04679

Specialties & Features

Residential & Commercial Plumbing
Bathroom & Kitchen Plumbing
Sewer Services
Fixture Installation
Emergency Repairs

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#3

Trenton Plumbing & Heating

4.5
(118 reviews)
Verified

While based in nearby Trenton, this highly-rated and large-volume contractor is a primary service provider for the entire Acadia region, including Southwest Harbor. They operate a large fleet of vehicles for quick response times and are equipped for major commercial projects and complex residential emergencies alike.

58 Bar Harbor Road, Trenton, ME 04605

Specialties & Features

24/7 Emergency Service
Commercial Plumbing
Water Heater Services
Drain and Sewer Cleaning
Pipe Installation

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes

Why These Are the Top Plumbing Contractors in Southwest Harbor

Southwest Harbor's plumbing market is characterized by a mix of historic century-old homes, modern residences, and a significant number of seasonal/vacation properties. The coastal environment presents unique challenges, including accelerated pipe corrosion from salt air and hard water issues common in Maine. The market is served by a small number of local specialists on Mount Desert Island, supplemented by larger providers from the Ellsworth/Trenton area. Emergency services are crucial, especially during the freezing winter months and the peak summer tourist season when population swells. Local plumbers must be well-versed in working on older infrastructure and integrating modern systems sensitively.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Southwest Harbor regulations and climate

Frequently Asked Questions About Plumbing in Southwest Harbor

Get answers to common questions about plumbing services in Southwest Harbor, Maine.

1How does the harsh Maine winter in Southwest Harbor affect my plumbing, and what preventative maintenance should I prioritize?

Southwest Harbor's deep freezes and extended cold spells make frozen and burst pipes a top risk. Homeowners should prioritize insulating pipes in unheated crawl spaces and basements, disconnecting and draining outdoor hoses before winter, and ensuring heat tape on vulnerable lines is functional. Knowing the location of your main water shut-off valve is critical for emergency response if a pipe does burst.

2What are typical costs for common plumbing services in Southwest Harbor, and why might they be higher than in other areas?

Costs for services like water heater replacement, drain cleaning, or fixture installation can be 10-20% higher than in urban southern Maine due to our remote coastal location. Factors include higher fuel costs for service travel across Mount Desert Island, the specialized knowledge required for older seasonal and year-round homes, and the limited number of licensed providers serving the area, especially during the busy summer season.

3When is the best time to schedule non-emergency plumbing work in Southwest Harbor?

The ideal times are late spring (May) and early fall (September-October). These "shoulder seasons" avoid the peak summer tourist season when plumbers are in highest demand for rental property turnovers and emergency calls, and they also avoid the depths of winter when emergency freeze-ups dominate schedules. Scheduling well in advance for these windows is highly recommended.

4What should I look for when choosing a plumber in Southwest Harbor, and are there local licensing requirements?

Always verify the plumber holds a valid **Maine State Plumbing License**, which is required by law. For our area, specifically seek out plumbers experienced with the common challenges here: older granite block foundations, seasonal home winterization/de-winterization, and solutions for homes with private wells and septic systems common in Hancock County. Local references are invaluable.

5My older Southwest Harbor home has low water pressure. What are the likely local causes?

In our area, common causes include galvanized steel pipes that have corroded and narrowed over decades—a frequent issue in historic homes—or issues with the private well system, such as a failing pressure tank or clogged well screen. Mineral buildup from local water sources can also restrict flow. A local plumber can diagnose whether the issue is with the interior piping, the well equipment, or the municipal supply line if you are on town water.