The Best Plumbing Contractors in Janesville, WI

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

#1

Thompson Plumbing & Heating

4.8
(150 reviews)
Verified

A well-established, family-owned and operated business known for its reliable service and deep roots in the Janesville community. They offer a full suite of residential and commercial plumbing services and are highly regarded for their customer service and technical expertise.

110 N Franklin St, Janesville, WI 53548

Specialties & Features

Emergency plumbing repairs
Water heater installation and repair
Drain cleaning and sewer services

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#2

A-1 Sewer Service

4.7
(200 reviews)
Verified

A highly specialized provider focusing on the more complex underground and sewer-related aspects of plumbing. They are a top choice for persistent drain clogs, sewer line replacement, and video pipe inspections. Their name reflects their core expertise, but they offer a wider range of services.

1821 Center Ave, Janesville, WI 53546

Specialties & Features

Drain cleaning and sewer services
Pipe installation and replacement
Leak detection and repair

Business Information

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

Mr. Rooter Plumbing of Southern Wisconsin

4.9
(100 reviews)
Verified

Part of a nationally recognized franchise, this provider brings brand-standard training, professionalism, and a strong guarantee to the local market. They are known for their punctuality, clean, uniformed technicians, and upfront pricing. While based in a neighboring city, they are a major service provider for the Janesville area.

2927 Commerce Park Dr, Madison, WI 53719 (Serves Janesville)

Specialties & Features

Emergency plumbing repairs
Bathroom and kitchen plumbing
Water heater installation and repair

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

Why These Are the Top Plumbing Contractors in Janesville

** The plumbing market in Janesville is competitive, characterized by a mix of long-standing local family businesses and regional or national franchises that extend their service areas to cover the city. The overall quality of service is high, with several companies boasting excellent reputations built over decades. Consumers have a good range of choices between specialized sewer/drain companies and full-service general plumbers. Competition is robust but not oversaturated, which helps maintain fair pricing. Typical pricing for a standard service call (diagnosis and first hour of labor) generally ranges from $80 to $150. Emergency or after-hours rates are significantly higher, often starting at a $150-$250 premium on top of the standard hourly rate, which can be $100-$200 per hour. The presence of reputable, established companies provides consumers with reliable options, reducing the risk of encountering "fly-by-night" operators.

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 Janesville regulations and climate

Frequently Asked Questions About Plumbing in Janesville

Get answers to common questions about plumbing services in Janesville, Wisconsin.

1How do Janesville's cold winters impact my plumbing, and what preventative maintenance should I prioritize?

Janesville's harsh winters, with temperatures often below freezing, pose a significant risk of frozen and burst pipes, especially in unheated areas like basements, crawl spaces, and exterior walls. Homeowners should prioritize insulating exposed pipes, disconnecting and draining outdoor hoses, and ensuring their basement stays above 55°F. It's also wise to know the location of your main water shut-off valve in case of an emergency freeze-related burst.

2What is the typical cost range for common plumbing services like water heater replacement or drain cleaning in Janesville?

Costs vary based on job complexity and materials, but local market rates provide a general guide. A standard 50-gallon gas water heater replacement typically ranges from $1,200 to $2,500 installed, while professional drain cleaning for a main line can cost $150 to $400. Always request a detailed, written estimate that includes labor, parts, and any potential charges for Janesville-specific issues like accessing pipes in older home foundations.

3Are there local regulations in Janesville or Wisconsin I should know about for plumbing repairs or renovations?

Yes, Wisconsin state plumbing code and local Janesville ordinances require permits for most major work, such as replacing a water heater, re-piping, or adding new fixtures. This ensures the work meets safety standards, which is crucial for protecting your home and our local water supply. A reputable, licensed Janesville plumber will handle the permit process for you, which is a key reason to hire a professional versus attempting major DIY projects.

4What should I look for when choosing a reliable plumber in Janesville?

Always verify the plumber holds a valid State of Wisconsin Master or Journeyman Plumber license and carries both liability insurance and worker's compensation. Look for established local companies with strong community reviews, as they understand the specific challenges of Janesville's older housing stock and hard water. A trustworthy plumber will provide clear, upfront pricing and be willing to explain the necessary work and local code compliance.

5My basement has a floor drain that sometimes emits a sewer odor, especially in dry weather. Is this a common issue in Janesville, and how is it fixed?

Yes, this is a frequent concern in Janesville and across Wisconsin due to the design of basement floor drains. The drain's trap can evaporate dry during periods of low use or low humidity, allowing sewer gases to enter the home. The simple fix is to periodically pour a gallon of water down the drain to refill the trap. If the odor persists, it may indicate a damaged trap or a blocked vent pipe, which requires a professional assessment.