Review
ACiQ's 4-ton downflow furnace and air conditioner system bridges budget-conscious contractors with efficient equipment built for specific airflow requirements. The 100,000 BTU furnace runs at 96% AFUE, while the matching 48,000 BTU cooling coil operates at 14 SEER1 using R454B refrigerant. This combination hits current Department of Energy minimums and avoids refrigerant compliance issues that plague older stock. The unit arrives as a matched pair, reducing compatibility headaches on job sites.
Real-world heating performance shines with two-stage burners that ramp gradually rather than cycling on-off at full capacity. The variable-speed ECM blower adjusts between whisper-quiet and 2000 CFM maximum, matching actual heating and cooling demand. Cooling performance trails newer inverter-drive competitors at 14 SEER1, though it remains efficient for moderate climates. The 208/230V single-phase electrical requirement simplifies installation in homes without three-phase service. Noise runs 74 dBA during operation, acceptable for utility closets but noticeable in finished basements.
Pros & Cons
Pros
- 96% AFUE furnace efficiency reduces heating costs in winter-heavy climates by 5-10% versus 90% AFUE competitors
- Variable-speed ECM blower motor automatically adjusts CFM from low to 2000 CFM, cutting electricity use and improving comfort
- R454B refrigerant meets current EPA standards, avoiding future phase-out risks that plague older R410A units
- Two-stage burner provides soft-start heating and quieter operation at partial load
- 10-year warranty with online registration covers parts and labor on most components
Cons
- 14 SEER1 rating lags behind newer 16-18 SEER systems on cooling efficiency, though still compliant with current minimums
- 5-ton tonnage mismatch with 4-ton nameplate creates specification confusion and potential contractor ordering errors
- 74 dBA noise level is higher than premium units with variable-capacity compressors, noticeable during AC operation
Who Should Buy
Best For
Contractors installing basement or attic systems where downflow/horizontal orientation is required, especially in northern climates where 96% AFUE delivers real ROI. This system works well for retrofits where ductwork already runs downward and simplicity matters more than cutting-edge cooling efficiency.
Consider Alternatives If
Homeowners in hot climates prioritizing air conditioning efficiency should look for 15+ SEER units. Those unwilling to work around the 5-ton/4-ton specification confusion should choose from clearer SKUs.
Installation
Downflow configuration requires vertical installation with exhaust venting through plastic or PVC pipe, common in attics and basements where ductwork descends. The 30-inch height, 21-inch width, and depth allow fit in most mechanical closets. Minimum 26.4 amps and maximum 45 amps breaker sizing stay within standard home electrical panels. Suction and liquid lines use 7/8-inch and 3/8-inch connections respectively, with 30-foot maximum line sets.
Warranty & Reliability
Ten-year warranty covers parts and compressor with online registration, standard for mid-tier equipment. Coverage applies to defects in materials and workmanship but typically excludes damage from improper installation, refrigerant overcharge, or electrical issues. Registration is mandatory to activate coverage, so document completion immediately after startup.
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) | 74 |
| Weight (in lbs) | 120.000000 |
| Feature | Spec |
| 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 |
| Configuration | Upflow / Downflow |
| Energy Star | No |
| Burner Stages | Two |
| 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. |
| SEER1 (Efficiency) | 14 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Max Breaker Size | 45 amps |
| Min. Breaker Size | 26.4 amps |
| Tonnage | 5 Ton |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 3/8" |
| Length | 30 feet |
Frequently Asked Questions
Affiliate disclosure: IndustrialRank earns a commission on qualifying purchases at no extra cost to you. We only recommend products we have independently reviewed.