Review
The ACiQ 4 ton downflow system arrives as a mid-range solution targeting HVAC contractors and budget-conscious homeowners balancing efficiency gains against retrofit simplicity. At $0, pricing appears promotional or incomplete in this dataset. The unit positions itself between basic 95% AFUE models and premium 98%+ systems. Goodman's engineering delivers reliable hardware with modulating heat technology and variable-speed delivery.
Heating output reaches 100,000 BTU with 97% AFUE efficiency, translating to roughly 97,000 BTU of useful heat per 100,000 input. The modulating burner stages fuel delivery smoothly rather than cycling on-off, maintaining tighter temperature bands and reducing energy waste. Cooling capacity sits at 48,000 BTU (4 ton) with 13 SEER1, operating at 2,000 CFM maximum. The variable-speed ECM blower adjusts automatically to system demand.
Pros & Cons
Pros
- 97% AFUE furnace efficiency significantly reduces heating costs compared to 95% units, typically saving $200-400 annually on natural gas
- Modulating burner adjusts heat output in real-time, eliminating short cycling and improving comfort consistency
- Variable-speed ECM blower motor runs quieter and uses less electricity than single-speed alternatives, supporting the overall efficiency story
- PVC exhaust flue capability simplifies installation in retrofit applications without requiring masonry chimneys
- 10-year warranty with online registration provides solid protection for both parts and labor concerns
Cons
- SKU mismatch shows furnace rated at 100,000 BTU and 5 ton capacity, but cooling side is only 48,000 BTU (4 ton), creating a heating-cooling imbalance that reduces efficiency
- 13 SEER1 rating is mid-range for modern systems and trails 14-16 SEER units gaining market share
- Single-stage condenser cannot modulate cooling output, working against the sophisticated furnace design
- 76 dB noise level runs slightly louder than premium competitors, noticeable in quiet bedrooms or home offices
Who Should Buy
Best For
Contractors upgrading older 80-95% AFUE systems in downflow applications where existing ductwork and infrastructure support this configuration. Homeowners in natural gas or propane areas seeking tangible heating cost reduction without full system replacement complexity.
Consider Alternatives If
Anyone needing balanced heating and cooling capacity should reconsider the 5 ton furnace with 4 ton condenser pairing. Buyers seeking cutting-edge efficiency ratings above 15 SEER should evaluate newer refrigerant systems.
Installation
Downflow orientation suits attic or closet installations feeding basement or crawlspace ducts. PVC exhaust flue simplifies venting compared to metal chimney requirements. Unit requires 208/230V single-phase power with minimum 26.3 amp and maximum 45 amp breaker sizing. Standard sweat connections on 3/8 inch liquid and 1 1/8 inch suction lines integrate with existing copper piping. Standard installation typically requires 4-6 hours for experienced technicians.
Warranty & Reliability
ACiQ provides 10-year coverage when registered online after installation, protecting against manufacturer defects in compressor, heat exchanger, and major components. This mid-range warranty matches industry standards but trails some competitors offering 10-year parts plus extended labor. Registration requirement ensures proper claim documentation.
Specifications
| SKU | ACIQ-48-EHPD-UPG |
| Brand/Manufacturer | ACiQ |
| Cooling BTU | 48,000 |
| Heating BTU | 100,000 |
| Refrigerant | R454B |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 76 |
| Weight (in lbs) | 120.000000 |
| Feature | Spec |
| AHRI Certificate Number | 7424272 |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Rebate Available |
| Furnace Efficiency / AFUE | 97% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| Energy Star | No |
| Burner Stages | Modulating |
| Fuel Type | Propane, Natural Gas |
| Height | 30" |
| Width | 21" |
| Depth | 21" |
| Resources | CAPF Installation Manual CAPF Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents. |
| Safety Information | PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here. |
| Replaces | GSX130483, GSX130484, GSX130485 |
| SEER1 (Efficiency) | 13 |
| Condenser Stages | Single Stage |
| Compressor Type | Reciprocating |
| Liquid Line | 3/8" |
| Suction Line | 1 1/8" |
| Liquid Valve Size | 3/8" |
| Max Breaker Size | 45 amps |
| Min. Breaker Size | 26.3 amps |
| Tonnage | 5 Ton |
| Valve Type | Sweat |
| Style | A-Coil |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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