Review
Goodman's 3 ton gas furnace and air conditioning system targets the practical buyer seeking balanced efficiency without premium costs. This downflow configuration pairs an 80,000 BTU furnace rated at 97% AFUE with a 35,000 BTU cooling unit delivering 18 SEER1 performance. Energy Star certification signals compliance with federal efficiency standards. The modulating burner and two-stage compressor handle varying loads intelligently, making it appealing for climates with genuine heating and cooling seasons.
Performance metrics justify the efficiency focus. The 97% AFUE furnace converts nearly all fuel to usable heat, translating directly to lower winter bills compared to 90-93% units. The 18 SEER1 condenser paired with a variable-speed ECM blower motor achieves cooling efficiency that reduces summer consumption by 15-25% versus single-stage systems. A two-stage scroll compressor operates at partial capacity most of the time, extending equipment life and maintaining quieter 71 dB operation during low-demand periods.
Pros & Cons
Pros
- 97% AFUE furnace rating delivers near-maximum heating efficiency with modulating burners for precise temperature control
- 18 SEER1 cooling efficiency exceeds most mid-tier systems, reducing summer electricity consumption measurably
- Variable-speed ECM blower motor adjusts to match demand, cutting runtime costs and improving comfort consistency
- Two-stage scroll compressor operates quietly at 71 dB and handles part-load cooling efficiently
- 10-year warranty with online registration provides solid coverage for both components
- PVC exhaust flue compatibility simplifies venting and reduces installation constraints in many homes
Cons
- Spec sheet shows conflicting tonnage ratings (product title states 3 ton, specs list 5 ton), creating confusion about actual cooling capacity
- 35 amp maximum breaker requirement demands dedicated electrical service most older homes lack without upgrades
- 71 dB noise level runs louder than inverter-driven competitors, noticeable during heating cycles
Who Should Buy
Best For
Homeowners in climate zones with balanced heating and cooling loads who value efficiency gains and plan 15-plus year ownership. Contractors installing complete systems for clients seeking reliable mid-range performance without boutique pricing.
Consider Alternatives If
Anyone in mild climates where furnace efficiency matters less, or homes with electrical panel constraints that prevent 35 amp service installation.
Installation
Installation requires standard refrigerant lines (3/8 inch liquid, 7/8 inch suction) with 3/4 inch insulation thickness for up to 50 feet of lineset. The right-side flue connection accepts PVC piping, simplifying venting in most homes. Electrical demand of 115V single-phase 60Hz with 21.3 to 35 amp breaker sizing may trigger panel upgrades in older residences, adding $500-1500 to project cost.
Warranty & Reliability
The 10-year parts warranty applies when you register the system online after purchase. Coverage includes the furnace, condenser unit, and compressor. Online registration is straightforward but mandatory, otherwise warranty defaults to shorter periods. This protects your investment adequately for typical system lifespan expectations, though it doesn't cover labor or refrigerant recharging.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 35,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 71 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Product Features | Rebate Available |
| Energy Star | Yes |
| 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 |
| 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. |
| AHRI Certificate Number | 7424271 |
| Airflow Direction | Downflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 97% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 1600 |
| Configuration | Upflow / Downflow |
| Flue Location | Right |
| Burner Stages | Modulating |
| Fuel Type | Propane, Natural Gas |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 3/4" |
| Length | 50 feet |
Frequently Asked Questions
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