Review
Goodman's 3-ton downflow system targets the replacement furnace market with solid two-stage technology across heating and cooling. This packaged unit delivers 100,000 BTU heating capacity with 35,000 BTU cooling output, positioning itself as a heating-focused solution for contractors and homeowners upgrading from older single-stage equipment. The Energy Star certification adds market appeal, though real-world performance depends heavily on proper installation and system balancing.
The 96% AFUE rating exceeds current minimum efficiency standards and translates to measurable heating cost savings, while the 18 SEER cooling efficiency provides decent air conditioning performance. Two-stage operation on both furnace and condenser allows modulated output rather than on-off cycling, improving comfort and reducing energy waste. The variable-speed ECM blower motor adjusts airflow from 0 to 2000 CFM based on demand, a key feature for maintaining efficiency across diverse operating conditions.
Pros & Cons
Pros
- 96% AFUE furnace efficiency with two-stage burner for modulated heating output
- 18 SEER cooling with two-stage scroll compressor and R410A refrigerant
- Variable-speed ECM blower motor optimizes airflow across all operating conditions
- PVC exhaust flue compatibility simplifies venting in modern construction
- 10-year warranty with online registration provides solid long-term protection
Cons
- Tonnage mismatch: 100,000 BTU furnace is rated for 5 tons but condenser delivers only 3 tons cooling capacity
- 71 dB noise level is moderately loud for a two-stage system, noticeable during operation
- SKU LS38783850 appears to be a package deal that may create compatibility questions
Who Should Buy
Best For
Homeowners in cold climates replacing 15+ year old furnaces will appreciate the 96% AFUE heating efficiency and modest cooling capability. This system works well for houses with existing ductwork suitable for downflow installation and standard 208/230V single-phase power.
Consider Alternatives If
Skip this if you need balanced heating and cooling capacities, live in hot climates requiring maximum cooling, or prefer single-stage simplicity over two-stage complexity.
Installation
This downflow configuration requires adequate clearance above the unit, minimum 30 inches height with 24.5 inches width and 21 inches depth. PVC exhaust flue simplifies venting compared to older metal flue systems. Two-stage systems need proper refrigerant charge accuracy and accurate furnace calibration to function correctly. A qualified HVAC tech should verify ductwork sizing matches the 2000 CFM maximum output.
Warranty & Reliability
Ten-year coverage on parts requires online registration and protects against manufacturing defects. The evaporator coil carries separate extended coverage under Goodman's coil warranty. This covers genuine defects but excludes damage from improper installation, refrigerant contamination, or lack of maintenance. Registration is straightforward and highly recommended.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 35,000 |
| Heating BTU | 100,000 |
| Refrigerant | R410A |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 71 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| AHRI Certificate Number | 7368844 |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Two Stage Condenser |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Configuration | Upflow / Downflow |
| Energy Star | Yes |
| Burner Stages | Two |
| Fuel Type | Propane, Natural Gas |
| Height | 30" |
| Width | 24.5" |
| Depth | 21" |
| Resources | CAPT Installation Manual CAPT 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) | 18 |
| Condenser Stages | Two Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 3/4" |
| Max Breaker Size | 35 amps |
| Min. Breaker Size | 21.3 amps |
| Tonnage | 5 Ton |
| Valve Type | Sweat |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 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.