WeatherKing HVAC Age Lookup Tool
WeatherKing is a value brand built by Rheem and sold through HVAC distributors, made on the same Fort Smith, Arkansas lines as Rheem and Ruud. The manufacturing date is your best guide to maintenance and replacement planning. Enter your WeatherKing serial number to find the manufacturing date and system age for free.
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Finding Your WeatherKing Serial Number
Check these four spots on your HVAC system
Common Locations
What to Look For
- White or metallic manufacturer sticker
- Labeled "Serial No." or "S/N"
- Typically 8–12 characters long
- Usually near the model number
Can't find it? Try the electrical access panel on the front of the outdoor unit or inside the air handler cabinet.
Serial Number Examples
Don't worry if yours looks different — each brand has multiple formats and our system can decode most variations.
About WeatherKing HVAC Systems
Owned by Paloma Industries
WeatherKing is a value brand built and sold by Rheem Manufacturing. The equipment comes off the same Fort Smith, Arkansas lines as Rheem and Ruud, so a WeatherKing air conditioner, heat pump, or furnace is the same hardware with different badging and a contractor-focused warranty package. Rheem has been owned by Paloma Industries since 1988.
WeatherKing is sold mostly through HVAC wholesale distributors rather than national retail, which helps keep the price down. For reading a serial number there is no difference between WeatherKing, Rheem, and Ruud: the manufacturing week is in positions 2 and 3, and the year is in positions 4 and 5.
Common WeatherKing HVAC Models & Series
The most-installed WeatherKing residential systems on the market today, organized by tier. Knowing your series helps narrow down service parts and warranty terms.
| Series | Type | Tier | Efficiency | Notes |
|---|---|---|---|---|
| WeatherKing Two-Stage AC | Air Conditioner | Mid-range | Up to about 17 SEER2 | Built on the Rheem Classic Plus two-stage condenser chassis. |
| WeatherKing Single-Stage AC | Air Conditioner | Entry | Up to about 15.2 SEER2 | Single-stage scroll on the Rheem Classic chassis; meets the federal minimum SEER2 in southern states. |
| WeatherKing Heat Pump | Heat Pump | Entry | Up to about 15.2 SEER2 | Single-stage heat pump that mirrors the Rheem Classic RP series. |
| WeatherKing 90 Plus Gas Furnace | Gas Furnace | Mid-range | Up to about 96 AFUE | Condensing furnace built on the Rheem 96% platform. |
| WeatherKing 80 Gas Furnace | Gas Furnace | Entry | Up to 80 AFUE | Single-stage 80% furnace; the same build as the Rheem R801 series. |
WeatherKing HVAC Quick Facts
Warranty
WeatherKing residential equipment registered within 60 days carries a 10-year parts warranty, with a 10-year compressor warranty on the condensers and a 20-year heat-exchanger warranty on furnaces. Unregistered units fall back to 5 years parts. Coverage runs from the install date with registration, otherwise from the manufacture date.
Expected Lifespan
AC / Heat pumps: 13 to 18 years
Furnaces: 15 to 22 years
Where It's Built
Fort Smith, Arkansas (the same Paloma and Rheem plant that builds Rheem and Ruud condensers, heat pumps, and air handlers) and Montgomery, Alabama (gas furnaces).
Price Positioning
Value tier. WeatherKing usually costs less than a comparable Rheem or Ruud at install because it is sold through wholesale distributors with less marketing overhead, even though the equipment is the same.
Known WeatherKing Issues to Watch For
A short list of patterns reported on WeatherKing equipment. Most have been addressed with revised designs or service bulletins, but they're useful context if you're diagnosing an older system.
- •Mechanically the same as Rheem and Ruud, so the same service bulletins apply, including the TXV low-subcooling issue on some 2010 to 2015 mid-tier condensers.
- •WeatherKing is sold through a smaller distributor network, so finding a local dealer for warranty work can take more effort than with Rheem in some areas.
- •Older units may carry a substitute part here and there, so a technician sometimes cross-references it to the matching Rheem number.
WeatherKing HVAC FAQs
Related HVAC Brands
WeatherKing shares a parent company with these brands, so they often use similar serial number formats and components.
Helpful HVAC Guides
Now that you know your WeatherKing system's age, these guides help you decide what to do next.
Repair or Replace Your Central Air Conditioner?
Should you repair or replace your AC? Covers the 5,000 rule, repair cost benchmarks, efficiency savings, and when replacement is the smarter choice.
MaintenanceHVAC Maintenance Checklist: What to Do Every Season
A no-fluff seasonal HVAC maintenance checklist. What to DIY each month, what a pro should do twice a year, and what it actually costs to skip it.
Buying GuideWhat Size AC Do I Need? Tonnage Calculator and Guide
How to size a central AC the right way: square footage rules of thumb, when they're wrong, and why a Manual J load calculation is worth insisting on.
Energy EfficiencyHow to Lower Your AC Electric Bill: 12 Proven Ways
Cut summer cooling costs without sweating. 12 changes ranked by payback period, with worked math on what each one actually saves.
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The free HVAC age checker
Time to repair or replace your HVAC system?
Compare free quotes from top-rated local pros near you.
Share this tool with friends!
The free HVAC age checker