Day & Night HVAC Age Lookup Tool
Decode your Day & Night serial number to find the manufacturing date, system age, and maintenance recommendations. Free and instant. No account needed.
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Finding Your Day & Night 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 Day & Night HVAC Systems
Owned by Carrier Global (ICP)
Day & Night is one of the older regional HVAC brand names. It predates ICP and was a standalone company before being absorbed into what eventually became the ICP family. Today it's sold primarily in western states through ICP's contractor network, a Carrier Global division.
Day & Night systems share the same manufacturing base as Heil, Tempstar, Arcoaire, and the other ICP brands. The serial number format is consistent across all ICP brands: two-digit year in positions 2 and 3, manufacturing week in positions 4 and 5.
Common Day & Night HVAC Models & Series
The most-installed Day & Night 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 |
|---|---|---|---|---|
| PerfectFit HVA9 Air Conditioner | Air Conditioner | Premium | Up to 19 SEER2 | Variable-speed inverter; same chassis as Heil HVA9. |
| PerfectFit HCA7 | Air Conditioner | Mid-range | Up to 17 SEER2 | Two-stage scroll compressor. |
| Easy N4A4 Air Conditioner | Air Conditioner | Entry | Up to 14.3 SEER2 | Single-stage; the volume builder unit. |
| PerfectFit HCH6 Heat Pump | Heat Pump | Mid-range | Up to 17 SEER2 / 9 HSPF2 | Two-stage heat pump. |
| PerfectFit G97CMN | Gas Furnace | Premium | Up to 97 AFUE | Modulating gas, variable-speed ECM blower. |
| Easy G9MAE / N9MSE | Gas Furnace | Mid-range | Up to 96 / 80 AFUE | Two-stage 96% or single-stage 80% options. |
Day & Night HVAC Quick Facts
Warranty
Day & Night provides a 10-year parts warranty and 10-year compressor warranty with registration within 90 days; unregistered units default to 5 years. Heat exchangers carry a 20-year limited warranty, with Lifetime Heat Exchanger coverage on PerfectFit premium furnaces.
Expected Lifespan
AC / Heat pumps: 13 to 18 years
Furnaces: 18 to 25 years
Where It's Built
Lewisburg, Tennessee (ICP's main residential plant). Day & Night shares all production lines with Heil, Tempstar, Comfortmaker, Arcoaire, Keeprite, and Airquest.
Price Positioning
Mid-tier — typically priced similarly to Heil and slightly below Tempstar within the ICP family.
Known Day & Night Issues to Watch For
A short list of patterns reported on Day & Night equipment. Most have been addressed with revised designs or service bulletins, but they're useful context if you're diagnosing an older system.
- •Day & Night is mechanically identical to other ICP brands, so it inherits the same micro-channel coil leak rates in coastal environments.
- •Distribution is concentrated in western US states, so finding a Day & Night dealer for warranty service can be hard if you've moved out of region.
- •Older units (pre-2010) may carry shorter warranty terms; check the original installer's paperwork rather than assuming current ICP coverage applies.
Day & Night HVAC FAQs
Related HVAC Brands
Day & Night shares a parent company with these brands -- they often use similar serial number formats and components.
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