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Water Heater Installation In Oahu, HI

Whether you need a water heater for a new home or are replacing an aging system, Steve’s Plumbing and A/C – Oahu delivers quality installation services you can count on. Our skilled team installs gas, electric, and tankless systems throughout the island, giving you reliable hot water when you need it.

Why Oahu Homeowners Call Steve’s

  • Installation for all water heater brands and models
  • Energy-efficient upgrades to meet modern standards
  • Island-wide service, including Honolulu and beyond
  • Licensed plumbers with deep local experience
  • Fair pricing and customer-first service

Why Choose Steve's?

Four decades of trust. One simple promise.

We’ve been part of Hawaiʻi homes since 1986. Locally operated, community-rooted, and backed by the kind of guarantee most companies won’t put in writing.

Polu-Polo

24/7 Service

5-Star Service

We Do It Right

Community Focused

Locally Operated

Specials

Financing Options Available

Need a new system? Don’t let cost hold you back. We offer flexible financing with approved credit so you can stay comfortable now and pay on your terms.

Get the Reliable, Island-Trusted Service You Deserve

From emergency repairs to full system installs, Steve’s keeps your home comfortable, efficient, and worry-free.

Comfort Starts with a Properly Installed Water Heater

From initial consultation to final connection, we make sure your water heater is installed safely and works perfectly for your home. Our team helps you choose the right model, explains your options, and installs everything with precision.

We Handle:

  • New water heater installation for homes and condos
  • Replacement of aging or damaged systems
  • Tankless system conversions
  • Gas line or electrical updates if needed
  • Full clean-up and system testing before we leave

We work quickly without cutting corners, ensuring everything functions smoothly from day one.

How old is your current water heater?

If your current water heater is between ten and fifteen years old, it is at a much higher risk of malfunctioning and requiring frequent, costly repairs or failing completely. In the case that your water heater is nearing the end of its lifespan, you should highly consider having Steve’s Plumbing & A/C Service – Oahu replace it altogether.

Are you moving?

If you are planning to move, having a new water heater installed is a huge incentive for new buyers. Additionally, if you’ve just moved into a new Oahu, HI home and you don’t feel that the current water heater is meeting your hot water needs, you may want to consider just installing a new one with Steve’s Plumbing & A/C Service – Oahu right away.

Is your current water heater having issues?

Lastly, if your water heater is experiencing issues, costing you money with constant repairs, it can actually be more cost-efficient to have Steve’s Plumbing & A/C Service – Oahu replace it with a new water heater.

Relax, We'll Handle It

1. Request a Service Visit From Steve's

Steve's offers fast response times and reliable scheduling. Simply call us or use our online scheduling tool.

2. Get Upfront Pricing Options​

One of our licensed technicians will diagnose the issue and give you a custom estimate before performing any work.

3. Relax While We Repair Your Problem

We handle every repair efficiently and effectively, ensuring the job is done right the first time. All you have to do is relax.

4. Let Us Know How We Did

Steve's is committed to excellent service, so we do it right, we make it right, or it's free. Once your repair is complete, we'd appreciate it if you could leave a review.

Water Heater Installation In Oahu, HI FAQs​

A 40-gallon tank typically works for a household of two to three people. Homes with four or more occupants generally need a 50-gallon unit or larger. If hot water demand is high or people shower at the same time regularly, a 75-gallon tank or a tankless unit may be the better fit. Your technician will assess your household size, number of bathrooms, and usage patterns to recommend the right capacity before you commit to a unit.
Replacing an existing tank water heater with a comparable unit typically takes two to four hours, including draining the old tank, making the connections, and testing the new unit. First-time installations or conversions between fuel types take longer. We’ll give you a clear estimate of the installation time when we scope the work.
Tank heaters cost less upfront and are straightforward to install, but they heat and store water continuously even when no one’s using it. Tankless units cost more initially and may require gas line or electrical upgrades, but they heat water on demand and last roughly twice as long. For an Oahu home where energy costs are higher than most of the mainland, the long-term efficiency of a tankless unit can justify the upfront investment over time.
Steve’s Plumbing & A/C Service installs units from Rheem, Bradford White, AO Smith, Navien, Noritz, and other major manufacturers. If you have a preference, we’ll work with it. If not, we’ll recommend a model based on your fuel type, household size, and budget, prioritizing reliability and parts availability rather than whatever happens to be in stock.
A permit is required for new water heater installations in Oahu and for tank-to-tankless conversions. Straight replacements of the same type and capacity in the same location may or may not require a permit depending on local requirements at the time of the job. We handle the permit process as part of the installation so the work is properly documented and inspected.

we go above & beyond for our friends and neighbors

We Do It Right, We Make It Right, or It's Free!

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We are committed to ensuring that individuals with disabilities enjoy full access to our websites. In recognition of this commitment, we are in the process of making modifications to increase the accessibility and usability of this website, using the relevant portions of the Web Content Accessibility Guidelines 2.0 (WCAG 2.0) as our standard. Please be aware that our efforts are ongoing. If at any time you have difficulty using this website or with a particular web page or function on this site, please contact us by phone at (808) 666-2819 or email us at customerservice@stevesplumbingac.com and place “Web Content Accessibility (ADA)” in the subject heading and we will make all reasonable efforts to assist you