Review
The Goodman 3.5 ton downflow system sits in the sweet spot between budget equipment and premium high-efficiency units. With 100,000 BTU heating capacity and 42,000 BTU cooling, it handles moderate climate zones without oversizing. The A-coil downflow configuration works in basements and attics where space constraints favor vertical discharge, making it practical for retrofit jobs and new construction alike.
Performance metrics reveal solid, middle-market engineering. The furnace hits 96% AFUE through condensing technology and two-stage burner operation, cutting heating waste dramatically versus 80% models. Cooling efficiency reaches 13 SEER1 with a reciprocating compressor operating at single-stage, meaning the unit runs full-bore or off with no intermediate capacity. The variable-speed ECM blower adapts to demand, cycling between 0-2000 CFM and improving dehumidification and comfort.
Pros & Cons
Pros
- 96% AFUE furnace efficiency reduces heating costs significantly compared to 80-90% models
- 13 SEER cooling rating qualifies for Energy Star certification and many utility rebates
- Variable-speed ECM blower motor adjusts airflow between 0-2000 CFM for comfort and efficiency
- Two-stage burner minimizes short cycling and heating overshoot in moderate weather
- Downflow A-coil configuration fits tight attic or basement installations where horizontal ductwork runs below
- 10-year parts warranty with online registration provides solid coverage without lengthy hoops
Cons
- Single-stage reciprocating compressor lacks the efficiency gains of two-stage or variable-capacity models
- 75 dB noise level runs audible during cooling operation, noticeable to nearby occupants
- Requires 115V dedicated circuit with 23.9-40 amp breaker, necessitating new electrical work in some homes
Who Should Buy
Best For
Contractors installing equipment in 2-3 ton applications where budget-conscious homeowners need reliable heating and cooling without investing in high-efficiency tiers. Best suited for homes in moderate climates where heating season is moderate and cooling loads stay under 42,000 BTU.
Consider Alternatives If
Skip this unit if you need heating capacity above 100,000 BTU, demand whisper-quiet operation below 72 dB, or want variable-speed compressor efficiency.
Installation
Installation requires 115V single-phase power with a 23.9-40 amp breaker, so most homes need dedicated circuit work. Liquid line accepts 3/8 inch sweat connections, suction line uses 7/8 inch, and both come wrapped in 3/8 inch insulation. PVC or plastic exhaust venting handles condensate from the 96% AFUE furnace. Downflow orientation demands ductwork below the unit, typical in basements or attics with gravity-fed return air.
Warranty & Reliability
Goodman backs this system with 10-year parts coverage when you register online within 30 days of purchase. This covers compressor, coil, and most internal components but excludes labor and shipping. Registration takes five minutes and protects your investment against manufacturing defects, though homeowner maintenance records must stay current.
Specifications
| SKU | ACIQ-4X-EHPD-UPG |
| Brand/Manufacturer | ACiQ |
| Cooling BTU | 42,000 |
| Heating BTU | 100,000 |
| Refrigerant | R410A |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 75 |
| Weight (in lbs) | 120.000000 |
| Feature | Spec |
| Energy Star | Yes |
| SEER1 (Efficiency) | 13 |
| Condenser Stages | Single Stage |
| Compressor Type | Reciprocating |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Liquid Valve Size | 3/8" |
| Max Breaker Size | 40 amps |
| Min. Breaker Size | 23.9 amps |
| Tonnage | 5 Ton |
| Valve Type | Sweat |
| Height | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Installation Instructions Goodman Parts Manual Goodman Service Manual Goodman Specifications Goodman Technical Information Goodman User Information Goodman 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. |
| Configuration | Downflow/Horizontal |
| Style | A-Coil |
| AHRI Certificate Number | 7368844 |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Rebate Available |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Suction Line Insulation Thickness | 3/8" |
| Length | 30 feet |
Frequently Asked Questions
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