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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon41
    Verified water heater services reviews

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

Avatar for Apex Services
Apex Services
5.0(
5
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+1 more

Serving Waterloo, NE and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

Since 2004, we've established a respected service reputation of excellence in the greater Elkhorn and Omaha communities we serve. We're proud of our Nebraska roots, while offering a "same day service guarantee" of servicing our customers on the day promised. We pride ourselves on the quality of our work as well as our commitment to earning your trust. We offer emergency repair services outside of normal business hours, so check with us for all of your heating, plumbing, and air conditioning needs.

AC repair
Furnace Repair
Water Treatment
41 neighbors recently requested a quote
Avatar for Plumbing Specialties
Plumbing Specialties
4.2(
97
)
Water Heater - Install or ReplaceWater Heater - Install or Replace - For Business

Serving Waterloo, NE and surrounding areas

In business since 2009

Free estimates

Warranties offered

"Job was performed very well, the two water heater installers and phone representative were friendly, the installers showed up right on time, the job time estimate was 2 hours, the installers did it in 1.5 hours, they even did a good job of cleaning up afterwards, couldn't of asked for a better job, excellent"
Response time2 hrs
Recommended by95%of homeowners
Showing 1-10 of 39
Water Heaters FAQs, answered by experts

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.

The time it takes to install or replace a water heater depends on the type of heater and the complexity of the job. A professional can typically replace a standard tank-style water heater in one to three hours. However, if the work area is tight, such as a small closet or crawl space, the job could take four to five hours. Replacing an existing tankless unit takes about two to three hours, while upgrading from a tank-style to a tankless water heater is more complex and can take four to six hours. The project will take longer if you are switching fuel sources, such as installing a gas heater which can add about an hour to the timeline, or if the unit needs to be relocated.

If your gas water heater is over 20 years old, it should be replaced. Gas water heaters can last up to 12 years and while they can exceed this expectancy if well-maintained, a heater that's 20 years old would require replacement. The heater is unlikely to run as efficiently as a new model and could be more expensive to do so.

Yes, a water heater can be replaced in a day and can take between two and three hours to install from start to finish. Even if you encounter extra tasks that need to be completed, the job can still be completed in one day.

When replacing an old unit, you might want to switch from a gas water heater to an electric water heater or vice versa. To do this, you will likely need to add infrastructure to the area. For example, you likely don’t have a gas line that served your old electric water heater. You’d have to call a plumber to put in a new gas line. If you’re replacing a gas unit with an electric one, the plumber will need to safely cap the old gas line. You will then need an electrician to add wiring for the new electric unit.

The Waterloo, NE homeowners’ guide to water heater services

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