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Best water heater pros near Seneca, IL

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Top-Rated Water heater pros in Seneca - Updated Nov 2026

Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,299
)
Water Heater - Install or ReplaceSolar Water Heater System - InstallTankless Water Heater - Install+6 more

Serving Seneca, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"On November 15th Chicago was hit with some extreme wind gusts that caused my water heater pilot light to extinguish. I thought this was a simple reset, but the problem was more complicated. I learned the electrode was defective. Had I undertaken this project as a DIY, I would have spent more time than I would have cared to try to figure out why I could not get a flame for my water heater. I was smart to call Four Seasons. My technician figured out the problem quickly. There are times when calling a professional makes sense. I am not an expert on water heaters outside of knowing how to turn it on, clean it periodically, and knowing when I need a new one. Thank you Four Seasons for responding quickly and bringing me hot water."
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Response time9 hrs
44 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for WORX PLUMBING LLC
WORX PLUMBING LLC
5.0(
5
)
Tankless Water Heater - InstallWater Heater - Install or Replace

Serving Seneca, IL and surrounding areas

In business since 2025

Free estimates

Credit card accepted

WORX PLUMBING LLC is dedicated to providing our customers with the best quality and \ncraftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

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Well Water Filtration
Well Water Filtration
Avatar for McDonagh & Sons Plumbing & Sewer Inc
McDonagh & Sons Plumbing & Sewer Inc
4.1(
69
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Seneca, IL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"The kitchen faucet was leaking and I was expecting out of town guests for the weekend. I called McDonagh & Sons Plumbing and spoke directly to Patrick. He worked me into his schedule that same day. When traffic slowed him down he called with an adjusted ETA. I appreciated that extra touch and same day service.  He fixed the sink and clearly explained the problem to me. He then corrected the cartridge in the shower where the hot and cold water was reversed by an incorrectly placed cartridge.

I was impressed with his knowledge and professional demeanor along with his partner, John. Although I couldn't fix these items myself I appreciate his explanation of each project and prompt service.

I have one more project of a non emergency matter that I will schedule to have done with Patrick in the near future. This experience was so positive that I will have McDonagh on my speed dial for future plumbing jobs.

I was given the Angie's list discount as advertised on his site. His pricing is fair and competitive.

"
Recommended by96%of homeowners
Bee Plumbing, Inc.
5.0(
23
)
Water Heater - Repair or ServiceWater Heater - Repair or Service - For Business

Serving Seneca, IL and surrounding areas

In business since 1985

Credit card accepted

Bee Plumbing, Inc., has been serving the Sandwich area since 1985. We are the most well known and respected plumbing in the Sandwich area. Customer satisfaction is our top priority. We have a $50 estimate charge for everything but additions and remodels.

Response time3 hrs
Recommended by42%of homeowners
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Water Heaters FAQs, answered by experts

The average water heater holds between 40 and 60 gallons, but the exact amount of water that comes out during draining will depend on your unit’s capacity. The amount of time it takes to drain a water heater averages from 10 to 30 minutes.

Venting a gas water heater out of the roof is preferable in most cases. Heated exhaust gases naturally rise, so a vertical vent pipe is efficient. If you’re trying to vent through a pipe exiting a wall, the angle of the pipe may be more horizontal than vertical, making the venting system less effective. If you go through a wall, you may need to add a fan to ensure a successful expulsion of the gases outdoors.

The standard copper wire gauge to use with any 30-amp circuit is a 10-gauge wire. The National Electric Code specifies a 10-gauge wire with appliances like water heaters running on 30 amps. If you try to use a smaller gauge wire, such as a 12 gauge, with a 30-amp breaker, you run the risk of the wire overheating and melting or causing a fire. Because of the safety hazards, the gauge of the wire is not an area to try to cut costs when connecting a 30-amp breaker to a water heater.

Not all types of water heaters require a venting system. Electric tankless water heaters don’t use natural or propane gas, so no venting is required. Instead, they use electric burners to heat water quickly and efficiently. However, any system that does use gas or propane will require ventilation.

Professional installs conclude in mere hours, with complexity differences possibly prolonging efforts slightly. Site condition often dictates the exact duration.

The Seneca, IL homeowners’ guide to water heater services

From average costs to expert advice, get all the answers you need to get your job done.