Commercial Water Heaters • San Diego

Commercial Water Heater Installation in San Diego

Quick answer: Fraser Plumbing sizes, installs and replaces commercial gas, electric and tankless water heaters, including delivery, venting checks and disposal of the old unit.

Best for: Restaurants, hotels, salons, laundromats and office buildings that need reliable hot water.
Availability: Open 24/7, including emergencies, across San Diego County.
Cost: Free estimate and a clear price before any work begins.
Guarantee: 1-year warranty on all plumbing work. Licensed, bonded and insured (CSLB #1106710).
Next step: Call (619) 332-0275 or request service online.

Fraser Plumbing installs, replaces and repairs commercial-grade gas, electric and tankless water heaters for San Diego businesses. We help you choose a model sized for your hot water demand and budget, check your venting and gas supply, and install units from Bradford White, Rheem and AO Smith, with delivery and disposal always included.

Request Water Heater Service

Tell us about your business and your current water heater. We’ll get back to you with a free estimate.

Emergency? Call (619) 332-0275. We answer 24/7.

24/7 Emergency Plumbing

Open around the clock

Free Estimates

Clear pricing before work starts

1-Year Warranty on Work

On all our plumbing work

Residential & Commercial

Homes, businesses & HOAs

Commercial Water Heaters at a Glance

What you need to know about commercial water heaters

What is a commercial water heater?

A commercial-grade water heater is built to last a long time and supply hot water continuously for a business. Units run on natural gas, propane or electricity, and some tankless models heat water on demand the moment it is needed.

When do you need a new one?

When your current unit can no longer keep up with your busiest times, when it fails or needs frequent repairs, or when you want to lower operating costs by switching to a more efficient tank or tankless system.

How Fraser helps

We compare your old unit’s specifications, recommend a compatible model that fits your needs and budget, check vents and gas lines for safety, and handle delivery, installation and disposal of the old heater.

Commercial Water Heater Installation

Choosing the right water heater for your business

A commercial water heater is an investment in your company. You need dependable hot water all day, not just during the busiest times, and you want it to be cost-effective without giving up performance or quality.

Gas, electric and tankless options

There is a wide variety of commercial water heaters on the market, including gas, electric and tankless models. Fraser Plumbing has years of experience installing commercial-grade units, and we will help you choose the model that suits your needs and budget, so your employees have hot running water for the whole length of their workday or night.

Brands we install, with delivery and disposal included

We install top-of-the-line commercial water heaters from leading manufacturers such as Bradford White, Rheem and AO Smith. For tankless or traditional atmospheric water heaters, we also install Navien, Noritz and Rinnai. Delivery and disposal are always included in our service. We offer a wide variety of commercial and residential unit styles to fit every need and budget.

Replacing your water heater with a new model

Before choosing a replacement, evaluate the size and capacity of your current unit. This information is usually on the label attached to the old water heater. Commercial water heaters are marked with their gallon capacity, height and diameter, so compare those details with the new model to be sure it is a compatible replacement.

Electric models: note the voltage and wattage of the old unit and compare them with the new unit’s specifications.
Gas models: compare the fuel type (natural gas or propane) and the exhaust vent diameter.

Why tankless can cost less to run

A traditional storage tank keeps gallons of water hot every hour, whether anyone is using it or not. A commercial-quality tankless system heats only the amount of water that is needed, so over time it costs less to operate. Newer tankless models are compatible with existing gas lines and ventilation stacks, which makes installation easier. If you are looking for a less energy-intensive option, a tankless heater is worth considering.

Commercial water heaters supply hot water for staff, customers, kitchens and laundry.

Water heater replacement checklist

Gallon capacity
Height and diameter dimensions
Electric models: wattage
Electric models: voltage
Gas models: fuel type (natural gas or propane)
Gas models: exhaust vent diameter

Hot water for the whole workday

Choosing the right capacity means your staff and customers have hot water at the busiest times, not just when the building is quiet.

What to Consider

Things to consider when choosing a commercial water heater

Capacity, heat output, water quality and compliance all affect which unit is right for your building.

Capacity

Hot water is essential for showers, dishwashing and laundry, but how much does your business actually use? If you need more hot water, a unit with a larger capacity may be a better fit. We will help you work out the right size for your demand.

Heat output and venting

Gas water heaters are the most commonly used type of commercial water heater. They use natural gas or propane, but if they are not maintained and vented properly they can be fatal. We examine your vents to make sure they are up to date and ready for the higher BTU output of larger models, along with any additional safety measures your site needs. If your gas supply needs work, see commercial gas line repair and installation.

Self-cleaning electric models for hard water

Hard water leaves deposits in the tank and on heating elements, and in some cases the whole unit has to be replaced. Self-cleaning electric water heaters are designed for hard water: they remove deposits from the tank and heating element, which cuts down on repairs and service calls. If you have had trouble keeping your tank or elements free of deposits, we strongly recommend upgrading to a self-cleaning electric model. A water filtration system can also help protect fixtures and appliances.

Compliance

Make sure any new water heater meets the 2015 NAECA energy-efficiency rules for water heaters. We can confirm that the model you choose complies.

Getting hot water to fixtures faster

If staff and customers wait a long time for hot water at the tap, the water heater may not be the only issue. A recirculating pump keeps hot water moving through the lines so it arrives sooner and less water goes down the drain.

Helpful resources: commercial water heater maintenance tips and how a tankless system heats water on demand.

We check before we install

Hot water demand and capacity
Existing unit specifications
Vent condition and BTU capacity
Gas line and fuel type
Electrical voltage and wattage
2015 NAECA compliance

Gas water heater safety

Gas water heaters that are not maintained and vented properly can be fatal. Have a professional check your venting whenever you upgrade to a larger unit.

Our Process

How we replace a commercial water heater

Tell us about your needs

Call (619) 332-0275 or send a request. Share what your current unit is and how your business uses hot water.

Compare specifications

We check capacity, dimensions, voltage and wattage or fuel type and vent diameter on your existing unit.

Recommend a model

We recommend a compatible tank or tankless unit for your needs and budget, with a free estimate.

Deliver and install

We deliver the new heater, check venting and connections, install it and dispose of the old unit.

Test the system

We confirm hot water is flowing properly. Our work carries a one-year warranty.

Tankless Benefits

Why businesses choose tankless water heaters

Tankless units turn on only when hot water is needed, instead of keeping a tank hot around the clock.

More convenience

Hot water on demand whenever it is needed, with no tank to run out, so staff never have to wait until after hours.

Lower operating cost

Heating only the water you use means lower energy costs over the life of the unit.

Higher efficiency

No energy wasted keeping an unused tank of water hot, and less natural gas or propane per hour of operation.

Saves space

Tankless systems are far more compact, freeing up valuable room for storage.

Less maintenance

With no large tank to refill and maintain, tankless units need less upkeep than traditional tanks.

Easier installation

Newer models work with existing gas lines and ventilation stacks.

Why Choose Fraser

Commercial water heaters from a local, family-run plumber

Fraser Plumbing Inc. is locally owned and operated in San Diego. We help you pick the right unit, install it safely and stand behind the work.

Available 24/7

No hot water at your business? We answer any hour, every day.

Honest recommendations

A unit sized for your actual demand and budget, not the most expensive option.

Free estimates

Know the cost of your new water heater before you decide.

1-year warranty

Our plumbing work is backed by a one-year warranty.

Service Areas

Serving San Diego County

We install and replace commercial water heaters for businesses throughout the City of San Diego and San Diego County.

FAQ

Commercial water heater questions

What San Diego business owners ask about commercial water heaters.

Still have a question?

Talk to a Fraser plumber. We’re available 24/7.

What types of commercial water heaters do you install?

We install gas, electric and tankless commercial water heaters, including traditional atmospheric tank models. Brands include Bradford White, Rheem and AO Smith, and for tankless or atmospheric units, Navien, Noritz and Rinnai as well.

Is delivery and disposal included?

Yes. Delivery of your new commercial water heater and disposal of the old one are always included in our service.

How do I choose a replacement for my current water heater?

Start with the label on your existing unit. Compare the gallon capacity, height and diameter, then the voltage and wattage for electric models or the fuel type (natural gas or propane) and exhaust vent diameter for gas models. We can do this comparison for you and recommend a compatible model.

Is a tankless water heater a good choice for a business?

For many businesses, yes. A tankless system heats only the water you use instead of keeping a tank hot all the time, so it costs less to operate over time, takes up less space and needs less maintenance. Newer models work with existing gas lines and ventilation stacks.

Do I need to upgrade my vents for a larger gas water heater?

Possibly. Larger gas models have a higher BTU output, and gas water heaters that are not vented properly can be fatal. We examine your vents to make sure they are up to date and can handle the new unit safely.

What if my building has hard water?

Hard water leaves deposits in the tank and on heating elements. A self-cleaning electric water heater is designed to remove those deposits and reduce repairs and service calls. A water filtration system is another option.

Do new water heaters have to meet efficiency rules?

Yes. New water heaters should meet the 2015 NAECA energy-efficiency rules. We make sure the model you choose complies. You can also explore heat pump water heaters as an energy-efficient option.

Do you offer free estimates?

Yes. Call us or send a service request for a free estimate. See all of our commercial plumbing services, or our residential water heater services for homes.

Commercial Water Heaters

Need reliable hot water for your business?

Call now to talk to a Fraser plumber about the right water heater, or send a request and we’ll get back to you to schedule your free estimate.

Emergency plumbing, 24/7

No hot water at your business? We’re available 24/7.

(619) 332-0275

Service Request

Request commercial water heater service

Tell us about your current water heater, how your business uses hot water and when works for you. For no-hot-water emergencies, please call.