Daikin 4 Ton AC And 115000 BTU Gas/Electric Commercial Package Unit – 13.7 SEER2, Single Stage, 81% AFUE, R32
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Key features
- 4-ton cooling capacity with 13.7 SEER2 efficiency rating
- 115,000 BTU single-stage gas furnace at 81% AFUE
- R-32 refrigerant, lower global warming potential than R-410A
- Self-contained package unit, no separate indoor air handler required
- Single-stage compressor for straightforward mechanical design
- 12-year parts warranty available with registration within 60 days of installation
About this system
The Daikin 4-Ton Gas/Electric Commercial Package Unit is a self-contained rooftop or ground-level system that combines a 4-ton cooling section rated at 13.7 SEER2 with a 115,000 BTU gas furnace running at 81% AFUE. Everything lives in one cabinet, making it a practical choice for light commercial buildings, small retail spaces, churches, or large residential applications where a split system is impractical or where mechanical room space is limited. The R-32 refrigerant charge is a forward-looking choice, carrying a lower global warming potential than R-410A and aligning with evolving EPA phase-down regulations.
The single-stage operation means the compressor and gas valve run at full capacity or not at all, which keeps the mechanical design simple and serviceability straightforward, but it also means the system does not modulate to match partial-load conditions. On mild days you may notice shorter run cycles and slightly less dehumidification compared with a two-stage or variable-capacity unit. The 81% AFUE gas section sits at the baseline efficiency tier for commercial package equipment and will cost more to operate in heating-dominated climates than a high-efficiency alternative. Buyers in the Sun Belt who rely primarily on cooling and use the furnace only a handful of months per year will feel that trade-off least.
This Daikin package unit delivers a well-built, single-source cooling and heating solution for light commercial and large residential applications where a packaged rooftop or slab-mount configuration is the right fit. The 13.7 SEER2 and 81% AFUE ratings are baseline-tier, so operating costs will be higher than premium-efficiency alternatives, and buyers should budget for potentially slow parts support. For a straightforward, durable workhorse where installation simplicity matters, it earns its place on the shortlist.
Overall score is the average of the five ratings above.
What we like
- All-in-one package cabinet simplifies installation and eliminates the need for a separate air handler
- R-32 refrigerant positions the system ahead of R-410A phase-down requirements
- Daikin's build quality is consistently recognized by Consumer Reports and HVAC experts among longer-lasting brands
- Single-stage design reduces mechanical complexity and lowers the number of components that can fail
- 12-year parts warranty is competitive for the commercial package category when registered on time
Trade-offs
- 81% AFUE gas section is baseline efficiency and will carry higher heating operating costs in cold climates
- Single-stage operation provides no capacity modulation, leading to shorter cycles and reduced dehumidification on mild days
- Daikin's parts availability and warranty handling are the most frequently cited service complaints, which can mean extended downtime
- Electronic control and circuit board errors are the most documented failure mode, and sourcing replacement boards quickly can be difficult
What homeowners and pros say about Daikin
Among HVAC professionals who install commercial package equipment, Daikin occupies an interesting position: the hardware is generally respected for durability and build quality, and Consumer Reports consistently places the brand among the longer-lasting options in the industry. Contractors who have put Daikin package units on commercial rooftops often note that the cabinets hold up well to weather and that the core refrigeration components tend to outlast the competition. That reputation for longevity is a real factor when specifying equipment for a building where replacing a rooftop unit is a significant disruption.
On the other side of the ledger, PissedConsumer shows a rating of roughly 1.4 out of 5 across several dozen reviews, a score that reflects a channel dominated by frustrated customers rather than typical owners, but the recurring themes still point to real friction: electronic control board failures that leave units locked in fault codes, compressor performance degradation in older units, increasing mechanical noise over time, and the widely reported difficulty getting parts or warranty resolutions in a reasonable timeframe. For a commercial installation, those service realities matter. Building managers and facilities teams considering this unit should map out a service plan with a contractor who maintains Daikin parts inventory locally, because waiting weeks for a board or valve while tenants endure a Texas summer is a scenario the hardware warranty alone will not prevent.
Sources: PissedConsumer Daikin reviews, AHRI Directory of Certified Product Performance, U.S. DOE appliance and equipment efficiency standards, Daikin product specifications.
What it costs to run
At 13.7 SEER2, cooling this 4-ton system for a typical 1200-hour cooling season at the U.S. average electricity rate of $0.17/kWh works out to roughly $715 per year in cooling, about $16 less per year than a minimum-efficiency 13.4 SEER2 unit of the same size. Your real cost depends on your climate and local rate.
Method: (48,000 BTU/hr ÷ 13.7 SEER2) × 1200 hours ÷ 1000 × $0.17/kWh. Rate source: U.S. EIA average; cooling hours: moderate-climate estimate.
How it compares
| Brand | Comparable model | SEER2 | Stage | Price position |
|---|---|---|---|---|
| Daikin | 4-Ton Gas/Electric Commercial Package Unit (this unit) | 13.7 | Single-stage | Value pick |
| Carrier | WeatherMaster 48TC | 14.0 | Single-stage | Comparable to slightly higher |
| Trane | Precedent WCD | 14.0 | Single-stage | Typically higher |
| Lennox | LRP14GE | 14.0 | Single-stage | Comparable to slightly higher |
Competitor rows are comparable single-stage units at similar efficiency; price is relative position, not a quote.
Questions about this system
Does this unit work for a rooftop installation on a flat commercial building?
Yes, commercial package units like this are specifically designed for rooftop curb mounting or ground-level slab installation. You will need to confirm the curb adapter dimensions match your existing roof opening or plan for a new curb, and ensure the roof structure can support the unit's operating weight.
Is 81% AFUE going to cost me significantly more to heat than a higher-efficiency furnace section?
In a heating-dominated climate, yes, the difference between 81% and 95% AFUE can be meaningful over a full heating season. In the Sun Belt or coastal climates where heating is a secondary concern, the cost gap narrows considerably and may not justify the premium for a higher-AFUE model.
What does the 12-year parts warranty actually cover, and what can void it?
The 12-year parts warranty covers manufacturer defects in components including the compressor and heat exchanger, but it requires registration within 60 days of installation by a licensed contractor. Missing that window typically drops coverage to a shorter base period, so registration immediately after commissioning is critical.
Are R-32 refrigerant and R-410A systems serviced the same way?
Not exactly. R-32 is mildly flammable (A2L classification), so technicians need specific training and tools rated for A2L refrigerants. Most commercial HVAC contractors are already being trained for this transition, but you should confirm your service contractor is equipped before scheduling maintenance or repairs.
What are the most common problems reported with Daikin package units?
The most consistently documented issues are electronic control and circuit board errors that can leave the unit unresponsive or throwing fault codes, compressor problems that reduce or eliminate cooling capacity, and noise that develops over time including rattling or humming on start-up and shutdown. Parts availability and slow warranty processing are the leading service complaints, so establishing a relationship with a well-stocked Daikin distributor in your region before you need emergency service is a practical precaution.
Specifications
| Cooling capacity | 4 Ton |
| Efficiency | 13.7 SEER2 |
| Furnace output | 115000 BTU |
| Furnace efficiency | 81% AFUE |
| Refrigerant | R-32 |