How to Know the Age of Noritz Tankless Water Heaters

The serial number of the Noritz Tankless Water Heater is at the bottom of the data plate on the unit. The first four digits  are the year it was manufactured.  The month, shown here at “06,” mean June. The fifth and sixth digits indicate the month. So the date of manufacture for the serial number shown on this Noritz Water Heater Data Plate, as indicated “2006 06,” is  June 2006.

Shout out to Mcgarry and Madsen from Florida for this useful info.

If you are experiencing problems with your Noritz tankless water heater, the age of the system can tell a lot about your options for repair or replacement. The age of the system can tell you about remaining (if any) warranty coverage, the availability of different types of upgrades, such as installing recirculating pumps (;  and how many years you could expect to have in the remaining life of the system.

For more information about Tankless Water Heaters in San Diego, contact: Carini Heating, Air and Plumbing, 619-843-0997;

Carini Heating, Air and Plumbing


San Diego, CA


Best San Diego Rebates on Energy Saving Rheem Hybrid Water Heaters

Heat Pump Water Heaters Ideal for San Diego Home, Business and Multi-family Applications

San Diego home and business owners may be familiar with energy saving mini split heat pumps for their heating and air conditioning.  But many residents are just learning about the same kind of energy saving benefits they can realize with the latest generation of Hybrid Water Heaters, also called Heat Pump Water Heaters. Like their mini split heat pump cousin, Heat Pump Water Heaters use electricity to power components by drawing ambient heat from the air, and then transferring that heat to the tank.

$250 SDG&E Rebate and up to $500 in Federal Tax Credits

Along with great energy saving capabilities, San Diego’s local Utility, SDG&E is offering a $250 instant rebate on the Rheem model PROPH50 T2 RH350, an Energy Star rated system available in 50, 65 and 80 gallon capacities. And these units also qualify for up to a $500 Federal Tax credit.  Processing both of these rebates is quick and easy, and Carini Heating, Air and Plumbing, can guide homeowners through the rebate process.

Rheem hit the market with the first heat pump water heater in 2009. Their unique and innovative design featured the industry’s first water heater with a full-color touch-screen control, giving users a powerful backlit touch-screen control.  The touch-screen provides homeowner service alerts on a variety of states and potential problems. These controls also allow Carini Heating, Air and Plumbing service techs to receive detailed, text-based diagnostic data, enhancing our ability to more quickly solve problems and recommend troubleshooting and maintenance solutions.

Carini Hybrid Water Heater San Diego Rebates from SDG&E and Federal Tax Credits









For more information about rebates on Rheem Hybrid Water Heaters, also called Heat Pump Water Heaters for San Diego residents, contact Carini Heating, Air and Plumbing, 619-843-0997;;

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How to Tell the Age of a Rheem Water Heater

If you’re a San Diego home or business owner with a Rheem water heater, there is a variety of useful information located on the Rheem water heating product label. If you ever need to call us to evaluate a repair or discuss installation of a Rheem water heater, you probably want to start with the age of the system.

Here’s an example of a Rheem water heater ten digit serial number and what each digit means:

Serial Number 12 09 D 01234

In this example,”12″ means the month manufactured – December. “09” indicates the year manufactured – 2009. Rheem’s headquarters are in Atlanta, GA, with manufacturing plants in Fort Smith, Montgomery, AL; Oxnard, CA; and Egan, MN for the United States; a plant in Quebec for Canada; and a plant in Mexico.

Consider that Rheem has three primary water heater models that we sell, install and service in San Diego: Tank, tankless and heat pump/hybrid. On all models, the serial number on all Rheem water heating product rating labels use ten (10) digits, and are located as follows in the images below:

Rheem tank water heater serial number locator san diego

The age of a Rheem tankless water heater is on the product label

Rheem heat pump or “hybrid” water heaters have 10 digit serial number

Rheem tankless water heaters place the serial number in the inside of the heater body on the right side.

Serial number plates for Rheem heat pump water heaters are located on a label on the upper left side of the system.





For more information about Rheem water heater installation, repair or maintenance agreements in San Diego, contact Carini Heating, Air and Plumbing at 619-843-0997;;

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