How to tell AC tonnage by model number?
For York central air conditioner model H1RA024S06D, the tonnage is typically encoded in the model number: the “024” usually means about 24,000 BTU/hr, which equals 2 tons (24,000 ÷ 12,000). Use the data plate on the outdoor condenser to confirm the exact model string.
Use this simple conversion when the model number includes a BTU block like 018, 024, 030, 036, 042, 048, or 060.
- Find the 3-digit capacity block in the model number (often 018 to 060)
- Treat it as thousands of BTU/hr (example: 024 = 24,000 BTU/hr)
- Divide BTU/hr by 12,000 to get tons
- Round to the nearest common size (1.5, 2, 2.5, 3, 3.5, 4, 5)
- If the label shows a different capacity, trust the label
| Model number capacity block | Approx. BTU/hr | Approx. tons |
|---|---|---|
| 018 | 18,000 | 1.5 |
| 024 | 24,000 | 2 |
| 030 | 30,000 | 2.5 |
| 036 | 36,000 | 3 |
| 048 | 48,000 | 4 |
| 060 | 60,000 | 5 |
On most York split-system outdoor condensers, the manufacturer label is on the cabinet exterior (often near the electrical access panel). It typically lists:
- Model number and serial number
- Electrical ratings (volts, amps)
- Refrigerant type
- Sometimes rated capacity (BTU/hr)
Correct tonnage helps you match the right replacement parts and electrical components (like a run capacitor) and prevents sizing mistakes that can cause poor cooling, short cycling, or high energy use.
If you are troubleshooting hard starting, humming, or a fan or compressor that struggles to run, a failed run capacitor is a common cause. For this model, we list a compatible capacitor CAP050300440RSP. You can also search by model number on Sears PartsDirect if you need additional parts.
Last updated: February 2026
Is 2-ton AC enough for a 1000 sq ft house?
A 2-ton central air conditioner is typically enough for a 1,000 sq ft house when insulation, windows, ceiling height, and sun exposure are average. If your home is very sunny, poorly insulated, or has high ceilings, you often need more capacity or airflow tuning.
A “2-ton” AC provides about 24,000 BTU/hr of cooling. For many homes, that lines up with common sizing ranges for around 1,000 sq ft.
- 1 ton = 12,000 BTU/hr
- 2 tons = 24,000 BTU/hr
- Oversizing can cause short cycling and poor humidity control
- Undersizing can cause long run times and higher indoor humidity
Use these factors to judge whether your York H1RA024S06D (a 2-ton class unit by model family) is a good match.
- Insulation and air leaks: older homes often need more capacity
- Windows and sun exposure: lots of west-facing glass increases load
- Ceiling height: tall ceilings increase the volume of air to cool
- Duct condition: leaks or undersized ducts reduce delivered cooling
- Occupancy and appliances: more people and cooking add heat
| Home conditions (1,000 sq ft) | Typical outcome with 2-ton AC |
|---|---|
| Average insulation, average sun | Usually a good fit |
| Very sunny, many large windows | Often needs more capacity or shading improvements |
| Poor insulation, leaky envelope | Often needs air sealing and insulation first |
| High humidity climate | Correct sizing matters more than “bigger is better” |
Correct sizing protects comfort and efficiency. A properly sized system runs long enough to remove humidity, keeps temperatures steadier, and reduces wear on key electrical parts like the run capacitor.
If your outdoor unit hums, struggles to start, or trips the breaker, a weak run capacitor is a common cause on central AC systems. For this York model, we list the capacitor CAP050300440RSP as a replacement part option.
You can order replacement parts for your York H1RA024S06D from the parts list for this model, or search by model number on Sears PartsDirect.
Last updated: February 2026
What does H1 mean on an air conditioner?
On a York central air conditioner like model H1RA024S06D, “H1” is not a standard, universal fault code; on many HVAC systems and heat pumps it commonly indicates a defrost cycle or a heating-related status rather than a hard failure. If you see “H1” and cooling stops, check power, airflow, and the outdoor unit’s operation.
Because “H1” meanings vary by control board and thermostat, we treat it as a status code first and troubleshoot the system conditions around it.
- Defrost cycle in heating mode (heat pump systems)
- A heating status indicator (not typically used for straight cooling)
- A thermostat or communicating control message (depends on installed controls)
- A symptom that points to an electrical issue if the outdoor unit will not start
- Confirm the thermostat is set to COOL and the setpoint is below room temperature.
- Replace or clean the return air filter; restricted airflow can cause abnormal operation.
- Check the outdoor unit: fan running, compressor sound, and no ice buildup.
- Verify the outdoor disconnect and breakers are on (reset only once if tripped).
- If the outdoor fan hums or struggles to start, the run capacitor is a common suspect.
A weak run capacitor can prevent the compressor or fan motor from starting, which can look like a “code” problem when it is really a start/run problem.
| Symptom | Common cause | What to do next |
|---|---|---|
| Outdoor fan hums, then stops | Weak capacitor | Test capacitor; replace if out of spec |
| Fan runs, compressor does not | Weak capacitor or compressor issue | Have electrical components tested |
| Unit trips breaker on start | Electrical short or failing component | Stop resets; schedule service |
If you need a model-matched replacement, we list the capacitor for this unit as capacitor CAP050300440RSP.
Misreading a status code can lead to unnecessary part swaps. Checking operating mode (cool vs heat), airflow, and outdoor start components helps you pinpoint whether “H1” is normal operation (like defrost) or a no-start condition.
For ordering, use the parts list for York H1RA024S06D on this page, or search by model at Sears PartsDirect.
Last updated: February 2026
