How old is my Frigidaire appliance by serial number?
For your Frigidaire FRS266ZDSBA refrigerator, the serial number on the rating plate inside the fresh food compartment is the key to estimating age; on many Frigidaire serials, the first character indicates the year and the next two characters indicate the production week.
Where to find the serial number on model FRS266ZDSBA
We use the same starting point every time: locate the serial plate inside the refrigerator compartment and record the model and serial number exactly as shown (letters and numbers). See the FRS266ZDSBA owner's manual.
- Open the fresh food (refrigerator) door
- Look along the side wall, upper interior, or near the crisper area for the serial plate
- Write down the model number and serial number
- Record the purchase date if you still have it (receipt, delivery slip)
- If the label is hard to read, take a clear photo and zoom in
How to decode the serial number (common Frigidaire format)
Many Frigidaire serial numbers can be read like this:
- 1st character: production year code
- 2nd and 3rd characters: production week (01 to 52)
Because a single year digit or letter can repeat across decades, we confirm the decade using the refrigerator’s styling, features, and any paperwork you have.
Quick example
| Serial pattern (example) | What it usually means | What you learn |
|---|---|---|
YWW... |
Y = year code, WW = week |
Approximate build week and year |
How to narrow down the decade (so the year code makes sense)
Use at least two of these checks to pin down the correct decade:
- Compare the refrigerator’s design and dispenser style to your purchase timeframe
- Check your receipt or delivery paperwork for an install date
- Look for service stickers or prior repair invoices with dates
- If you replaced maintenance items regularly, use that timeline (for example, water filter changes)
- Use the troubleshooting and feature set in the FRS266ZDSBA owner's manual to match what your unit has
Why it matters
Knowing the approximate build date helps us choose the right repair approach and parts for your Frigidaire side-by-side refrigerator, especially for common age-related issues like door seal wear, cooling performance changes, and ice maker problems.
If you are ordering parts, we recommend matching by model number (FRS266ZDSBA) first, then confirming the part fits your serial range before checkout; you can also search by model on Sears PartsDirect.
Last updated: February 2026
What does my Frigidaire model number tell me?
Your Frigidaire model number (for this refrigerator, FRS266ZDSBA) identifies the exact product configuration so we can match the correct parts, features, and documentation. It typically indicates the product type/series and the specific version, which matters for items like door gaskets, filters, and ice maker components.
Where to find the model number (and why it matters)
We use the model number exactly as printed on the serial plate inside the fresh food compartment. Matching it precisely helps avoid ordering a part that looks similar but will not fit.
- Look inside the refrigerator compartment for the serial plate
- Write the model number exactly, including all letters
- Use the full model number when searching parts diagrams and lists
- Use the model number when checking installation and leveling steps
- Keep it with your purchase date for future reference
What the characters usually represent
Frigidaire model numbers are structured so the letters and numbers distinguish capacity, design series, and revision. The exact meaning of each position can vary by product line and year, but the key takeaway is that each character helps narrow down the correct parts.
| Model number piece | What it commonly indicates | Why you care |
|---|---|---|
| Prefix (example: FRS) | Product family/type (often side-by-side series) | Helps match the right diagrams and assemblies |
| Number block (example: 266) | Size or series identifier | Helps separate similar-looking models |
| Suffix letters (example: ZDSBA) | Feature package, finish, or revision | Affects fit for doors, gaskets, and dispenser parts |
Examples of parts where the exact model number matters
Even within the same Frigidaire side-by-side platform, small revisions can change mounting points, wiring, or dimensions.
- Water filter fit and housing style (example: refrigerator filter WFCB)
- Door seal profile and color (example: refrigerator gasket 241786014)
- Ice system components (example: ice maker mold 241798231)
- Lighting style (example: refrigerator light bulb 316538904)
- Defrost sensing components (example: refrigerator defrost bi-metal thermostat 5303918214)
Related documentation that uses your model number
For model-specific operating, care, and setup details (including door removal notes and normal operating sounds), use the owner's manual. For leveling and door height adjustment using the front rollers and toe grille removal, use the installation guide.
Why it matters
Using the exact FRS266ZDSBA model number prevents wrong-part returns and speeds up troubleshooting because we can align symptoms (cooling, ice maker, dispenser, door sealing) with the correct Frigidaire configuration.
You can order replacement parts from the parts list for this model, or search by model number on Sears PartsDirect.
Last updated: February 2026
What is the most common problem with a Frigidaire refrigerator?
The most common problem we see on Frigidaire refrigerators like model FRS266ZDSBA is a cooling complaint: the refrigerator section gets too warm, runs too long, or temperatures swing because airflow is restricted (dirty condenser coils, door not sealing) or the defrost system is letting frost build up.
Most common symptoms customers notice
- Fresh food section is warm but the freezer seems OK
- Refrigerator runs too much or too long
- Freezer or refrigerator temperature is too warm after frequent door openings
- Frost buildup that reduces airflow
- Ice maker or water dispenser performance drops when water flow is restricted
Quick checks that fix many “not cooling” calls
Start with these basics before replacing parts:
- Clean the condenser coils; a dirty condenser can cause warm temperatures and long run times.
- Check the doors close fully; a slightly open door lets warm air in and drives temperatures up.
- Inspect and clean the door gasket; a worn, cracked, or dirty seal makes the refrigerator run longer.
- Give temperatures time to stabilize after adjusting controls; allow about 24 hours for changes to settle.
- Limit long door openings; warm air entering the cabinet is a top cause of “too warm” complaints.
Common causes and what they usually look like
| What’s happening | Most likely cause | What to do first |
|---|---|---|
| Runs too long | Dirty condenser, door leak, frequent openings | Clean coils, check gasket and door alignment |
| Fresh food warm | Airflow restriction (frost/blocked vents) | Clear vents, check for frost patterns |
| Temps swing | Control settings changed recently | Set controls, wait 24 hours |
Parts that are often involved (when a part is actually needed)
If cleaning and door-seal checks do not solve it, these model-compatible parts are commonly tied to cooling and airflow issues:
- Refrigerator defrost bi-metal thermostat 5303918214 (defrost protection and temperature sensing in the defrost circuit)
- Refrigerator evaporator fan blade 5308000010 (moves cold air through the freezer and into the refrigerator section)
- Refrigerator gasket 241786014 (helps prevent warm air leaks at the door)
Why it matters
Cooling problems usually get worse over time: longer run times increase energy use, warm temperatures shorten food life, and frost buildup can eventually block airflow so the refrigerator section cannot stay cold.
For model-specific operating and temperature control guidance, follow the FRS266ZDSBA owner's manual. You can also order replacement parts for FRS266ZDSBA from the parts list for this model, or search by model number on Sears PartsDirect.
Last updated: February 2026
What is the average lifespan of a Frigidaire refrigerator?
Most Frigidaire refrigerators, including the FRS266ZDSBA side-by-side, last 10 to 15 years. With consistent care (cleaning the condenser, keeping door seals tight, and maintaining the water system), it’s common to reach the upper end of that range.
What affects lifespan the most
A refrigerator’s life is usually determined by how hard the sealed system and compressor have to work day to day.
- Dirty condenser coils make the compressor run longer and hotter
- Worn or leaking door gaskets let warm air in and increase run time
- Frequent door openings and warm room temperatures increase workload
- Ice maker and dispenser use adds run time and wear
- Poor airflow inside (overpacked shelves, blocked vents) reduces cooling efficiency
Maintenance schedule we recommend
Use this as a simple baseline; your owner's manual includes model-specific care and cleaning guidance.
| Task | How often | Why it helps |
|---|---|---|
| Clean condenser area | Every 6 to 12 months | Reduces compressor run time and heat stress |
| Check door seal for gaps and tears | Every 3 to 6 months | Prevents warm air leaks and frost issues |
| Replace water filter (if equipped) | About every 6 months | Protects water flow and ice quality |
| Keep temperatures stable | Ongoing | Avoids overworking the cooling system |
Parts that commonly support longer life
If you’re restoring performance on the FRS266ZDSBA, these parts are often involved in “runs too long,” warm temps, or efficiency complaints.
- Refrigerator gasket 241786014 (helps stop air leaks at the freezer door)
- Refrigerator filter WFCB (supports steady water flow and better ice and water quality)
- Refrigerator defrost bi-metal thermostat 5303918214 (helps prevent frost buildup that restricts airflow)
Why it matters
When the refrigerator runs too much or too long, it accelerates wear on major components. The manual’s troubleshooting guidance notes that dirty condensers and poor door sealing can increase run time; reducing that workload is one of the most effective ways to extend service life.
You can order replacement parts for your Frigidaire FRS266ZDSBA from the parts list for this model, or search by model number on Sears PartsDirect.
Last updated: February 2026





