Tankless Water Heaters

Tankless Water Heaters - Sales, Installation and Service in San Diego, CA

Isn’t it time your home made the switch to a Tankless Hot Water Heater?

Hot water—whenever and wherever you want it—is one of life’s many comforts. Arnett’s Water Systems of San Diego sells the best tankless water heaters in the industry. We also provide affordable professional installation, repair and maintenance services for tankless water systems.  Arnett’s tankless water system solutions utilize self-modulating, tankless water heating technology to deliver hot water instantly—and for as long as you need it.

tankless water heater installation

Save up to 50% on hot water heating costs

With a tankless water heating solution, you may save up to 50% on water heating costs. Tankless water heaters use only the energy necessary to heat water on demand.  You no longer pay to heat and maintain a tank of hot water and that saves you a lot of money.


In the market for a tankless water heater? Arnett’s has you covered.

Nortiz Authorized Dealer San Diego CA
Noritz NRCR111 Recirculation Tankless Water Heater San Diego

Noritz NRCR1111 Recirculation Tankless Water Heater

.81 Uniform Energy Factor
Minimum 16,000 to Max 199,900 BTUh
0.5 to 9.8 GPM

Noritz EZTR40 Tankless Water Heater San Diego

Noritz EZTR40 Tankless Water Heater

.87 Uniform Energy Factor
Minumum 15,000 to Max 120,000 BTUh
0.5 to 6.6 GPM

Noritz NR98 SV Tankless Water Heater San Diego

Noritz NR98 SV Tankless Water Heater

.81 Uniform Energy Factor
Minimum 16,000 to Max 199,900 BTUh
0.5 to 9.8 GPM

Noritz EZ111 Tankless Water Heater

.96 Uniform Energy Factor
Minumum 18,000 to Max 199,900 BTUh
0.5 to 11.1 GPM

Noritz NR98 OD Tankless Water Heater San Diego

Noritz EZ98 Tankless Water Heater

.96 Uniform Energy Factor
Minumum 18,000 to Max 180,000 BTUh
0.5 to 9.8 GPM

Tankless Water Heaters vs. Conventional Water Heaters

Learn the Differences, Features and Benefits

Tankless Water Heaters

The most noticeable difference between conventional and tankless water systems is the size. Tankless water heaters are smaller, so they require less space in your home. They can even be installed outside the house. Tankless water heaters are more efficient, and, depending on the model, can provide 13.8 gallons of hot water per minute on demand.

According to, for homes that use 41 gallons or less of hot water daily, tankless water heaters can be 24-34% more energy efficient than conventional storage tank water heaters. In addition to their high efficiency, tankless water heaters also have longer lifespans—nearly twice as long as conventional models. Paired with a lengthy warranty period, tankless waters are the more economical choice in the long run.

If you’re still having trouble deciding which model best-suits your home or business, give us a call! With over 25 years of experience in the hot water business, we can help you choose the right system, right away. At Arnett’s, our top priority is making sure our customers are happy and comfortable with their water systems. It’s our pleasure to help you find the perfect water heater for you home or business.

Conventional Water Heaters

Conventional water heaters use a tank to heat and store water. They can typically hold 20-80 gallons of hot water. Conventional water heaters are generally kept indoors, as they cannot tolerate harsh weather conditions. They require more space than tankless water heaters, and will need an area the size of a small closet for housing.

While the initial costs of purchasing and installing a conventional water heater are typically lower than those of tanked systems, you’ll likely spend more on conventional models over time.

Conventional water heaters heat and reheat water at a pre-set temperature, regardless of your water needs. This can have a negative impact on your utility bill (especially during the winter months).

Another long-term cost relates to the higher turnover rate of conventional water heaters, which usually need replacing every 10-15 years. Additionally, when tanked systems malfunction, gallons of water can leak out, causing damage or flooding. An empty tank can take up to 45 minutes to refill, costing you quite a bit of time.


If you’re considering having a tankless water heater or a water filtration system installed into your home or business, just give us a call and schedule a visit. We’ll be happy to assist you and your family!