3.5 Ton EcoTemp 13.4 SEER2 R-454B 90K BTU Gas Package Unit WPG542A090RKB
The EcoTemp WPG542A090RKB is the 3.5 ton WPG5, sized for larger homes and busy small businesses that have outgrown 3 tons but don't need a full 4. It delivers 40,000 BTUh of rated cooling and 1,350 CFM of airflow at 13.4 SEER2. A 90,000 BTU input furnace supplies about 74,000 BTU of heat output at 81% AFUE. The cabinet is factory assembled, prewired, and charged with R-454B, so this rooftop and ground-mount package unit goes from delivery to running with minimal field work.
Is a 3.5 Ton Gas Package Unit the Right Size?
A 3.5 ton unit fits a cooling load of about 40,000 to 42,000 BTUh. That is common in larger single-story homes, two-story homes served by one system, and commercial spaces with heavy lighting, equipment, or customer traffic. Moving up from 3 tons adds 5,600 BTUh of rated cooling and 200 CFM of airflow. That helps with long, hot afternoons and rooms far from the unit.
On the heating side, the 90K furnace delivers about 74,000 BTU of output. That suits mixed climates and larger floor plans with higher heat loss. A room-by-room load calculation is the best way to confirm that 3.5 tons fits better than 3 or 4.
Ideal for: Larger ranch-style homes, two-story homes on a single system, small restaurants, fitness studios, churches, and retail spaces with 3.5 ton cooling loads.
Need more capacity? Step up to the 4 Ton EcoTemp 90K BTU Gas Package Unit WPG548A090RKB for another half ton of cooling and 1,600 CFM of airflow.
Recommended applications are general guidelines only. Actual system requirements depend on insulation, ductwork, climate, window area, occupancy, and a proper load calculation. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Package Unit | WPG542A090RKB: 3.5 Ton Single-Packaged Air Conditioner & Gas Furnace |
|---|---|
| Cooling Capacity | 40,000 BTUh Rated (42,000 BTUh Nominal), 1,350 CFM |
| Gas Heating | 90,000 BTU Input / 74,000 BTU Output, 81% AFUE |
| Efficiency | 13.4 SEER2 / 11.05 EER2 |
| Refrigerant | R-454B, Factory Charged (5.25 lb), with Leak Detection Dissipation System |
| Compressor | Scroll Compressor |
| Airflow Configuration | Convertible Downflow or Horizontal, Insulated Horizontal Duct Covers Included |
| Electrical | 208/230V, Single Phase, 60 Hz; 25.4 MCA, 40 Amp Max Fuse/Breaker |
The WPG542A090RKB ships at about 438 lb and uses size-specific accessories, including the CPECOMZR008A00 vertical economizer, CPMANDPR008A00 manual outside air damper, and CPFILTRK008A00 internal filter rack. That makes it easy to adapt for light commercial ventilation needs. For ground-level installs, secure it on a level pad from our equipment pads and tie-down selection.
Cooling & Gas Heating Features
WPG542A090RKB Air Conditioning Section
- 40,000 BTUh rated cooling for 3.5 ton loads
- 1,350 CFM standard airflow from the ECM indoor blower
- Efficiency rated at 13.4 SEER2 and 11.05 EER2
- Scroll compressor (14.8 RLA) with high-pressure protection
- Factory-charged R-454B with leak detection dissipation system
- 3/4 HP, 26-inch direct-drive outdoor fan moves 3,500 CFM
- 3-row indoor coil for effective heat removal
- Time Guard II anti-short-cycle protection
- Dehumidification feature listed by the manufacturer
- 74 dBA rated sound level
WPG542A090RKB Gas Furnace Section
- 90,000 BTU input / 74,000 BTU output gas heat
- 81% AFUE heating efficiency
- 35–65°F temperature rise range
- Direct spark ignition, no standing pilot
- Monoport inshot burners for precise air-to-gas mixing
- Durable stainless steel Turbo-tubular heat exchanger
- IGC board with self-diagnostics speeds troubleshooting
- Natural gas standard, LP conversion kit available
- Heavy-duty cabinet rated for 500 hours of salt spray
- Insulated heat exchanger compartment
Specifications & Manuals
Product documentation includes WPG5 technical specifications, performance and electrical data, installation instructions, the product brochure, and EcoTemp warranty terms to assist with equipment selection, installation, and service.
Frequently Asked Questions
How does the 3.5 ton WPG542A090RKB compare to the 3 ton 90K model?
It raises rated cooling from 34,400 to 40,000 BTUh and airflow from 1,150 to 1,350 CFM. Heat output is about 74,000 BTU, compared with 73,000 on the 3 ton. Electrical increases to 25.4 MCA with a 40 amp maximum breaker.
Is the 3.5 ton model louder than the 3 ton?
No. The manufacturer rates the 3.5 ton WPG542A090RKB at 74 dBA, slightly below the 75 dBA rating of the 3 ton size.
What compressor amperage does the WPG542A090RKB draw?
The scroll compressor is rated at 14.8 RLA (rated load amps) and 109 LRA (locked rotor amps). Full electrical data, including fan and inducer motor FLA, is in the technical specifications.
Which economizer fits the 3.5 ton WPG5?
Size 42 uses its own accessories: the CPECOMZR008A00 vertical economizer and the CPECOMZR011A00 horizontal economizer. Both include a filter rack and 1-inch filter.
Can the WPG542A090RKB be installed at ground level?
Yes. The composite base won't rust at ground level, and the integrated basepan and drain pan allow easy installation on a mounting pad. The unit can also be curb-mounted on a roof.
Does the WPG542A090RKB help control indoor humidity?
The manufacturer lists a dehumidification feature for the WPG5 series. Sizing the unit correctly, rather than oversizing it, also helps the system run long enough to remove moisture.
WPG5 Technical Specifications
WPG5 Installation ManualWPG5 Product Brochure
WPG5 Warranty
