SUNDIAL SOLAR SERVICES
How Old Is My Solar Water Heater?
Not sure how old your solar water heater is or whether it’s still under warranty? Sundial Solar Services can help you identify your equipment, locate manufacturer warranty information, and understand your repair or replacement options.
Florida license CVC56971
Start With the Manufacturer Label
The serial number usually helps identify the manufacturing date. The model number identifies the product—not its individual age. A printed manufacturing date, if present, is a useful starting point.
- Look for an externally accessible rating label on the storage tank. Record the manufacturer, complete model number, and complete serial number, including letters.
- Check your installation invoice and warranty documents. The date the tank was made may differ from the installation date and warranty start date.
- Use the matching manufacturer resource below. If the format is unclear, ask the manufacturer to confirm the date rather than applying another brand’s code.
What to Look For on the Label
This simplified example shows the information to look for on an externally accessible water heater identification label.
Copy the complete model number. It identifies the product type, not its individual age.
This fictional serial number is for illustration only. Copy every letter and number from your own label for the manufacturer’s lookup.
A separate date may not be printed. If it is absent, use the official manufacturer resources below to identify the date from the serial number. Do not use a generic decoding rule.
Do not remove electrical covers, disconnect plumbing, climb onto roofs, or attempt repairs to pressurized or electrically powered equipment. If your system is leaking or malfunctioning, contact a qualified professional.
Is It Still Under Warranty?
Have the full model and serial numbers, purchase or installation records, and a description of the problem ready. Check the warranty for your exact product and let the manufacturer confirm eligibility.
Age alone does not establish coverage. Installation date, ownership, maintenance, prior replacements, and the specific warranty terms may affect eligibility. A covered tank or part does not automatically mean labor, diagnosis, removal, or installation is free.
Rheem
Find the complete model and serial numbers on the tank’s externally accessible rating label. Do not remove covers to reach it.
Rheem’s documented serial format starts with two digits for the month and two for the year: 12 09 D 01234 means December 2009. Apply this only when your label matches the documented format; use Rheem’s age tool or support for other formats.
American Water Heaters
Record the full serial and model numbers from the rating plate. If a QR code is present, American’s official support guide explains how it opens product and warranty information. Ask support to confirm the manufacturing date; do not assume a date-code format.
A. O. Smith
Find the complete model and serial numbers on the tank’s externally accessible rating label. Do not remove covers to reach it.
Use the complete serial number for the official warranty lookup. Keep proof of purchase and installation so the manufacturer can confirm the warranty start date. For an uncertain manufacturing date or an older serial format, contact support with the model and serial numbers.
Bradford White
Find the complete model and serial numbers on the tank’s externally accessible rating label. Do not remove covers to reach it.
The first two serial-number characters indicate the production year and month. Year letters repeat, so a letter alone does not establish the decade. Use Bradford White’s Warranty Center to find the manufacturing date and warranty information for your complete serial number.
Official resources checked October 16, 2026. Contact routes and warranty terms can change. Follow the instructions for your exact model; these links do not constitute a coverage decision.
One Solar System, Separate Components
A storage-tank warranty should not be treated as a warranty for every part of the solar water heating system. Check each component’s manufacturer and its own documentation.
Storage tank
Check tank and included-parts coverage against the tank’s model, serial number, and warranty sheet.
Rooftop solar collectors
Collectors may have a different manufacturer, installation date, and warranty. Leave roof access and label inspection to a qualified professional.
Circulation pump
The pump may carry separate parts coverage. Have its model and service history checked during an inspection.
Controllers and sensors
Controls and temperature sensors may have their own warranty terms, separate from the tank and collectors.
Valves and plumbing
Valves, fittings, piping, and installation workmanship may be covered by different suppliers or agreements. Confirm the scope before authorizing work.
Tank replacement options
Replacing a storage tank does not necessarily require replacing the whole solar system. An inspection can assess the collectors, controls, and compatibility of a replacement tank.
Who Handles Warranty Assistance?
The manufacturer decides warranty eligibility under its terms. Use the official contact above with your equipment details and records. Sundial can assess the equipment and explain practical service options.
Need Help With Your Solar Water Heater?
Sundial provides solar water heater inspections, troubleshooting, repairs, and replacements. Tell us the brand, model, serial number, and symptoms if you can safely locate them.
We will explain the proposed work and service charges. Sundial cannot promise manufacturer warranty approval or free warranty labor.
Request Solar Water Heater AssistanceCall (386) 214-6867