Review
The Goodman 3.5-ton horizontal system represents competent mid-market HVAC equipment designed for mixed-use residential applications. This combination furnace and air conditioner package pairs an 80,000 BTU gas furnace with a 42,000 BTU cooling coil in a compact horizontal footprint. Goodman maintains strong contractor loyalty through parts availability and straightforward serviceability. This system targets homeowners seeking reliable climate control without premium pricing or advanced variable-speed technology.
Performance metrics show a furnace AFUE rating of 96 percent, delivering strong heating efficiency for winter months and reducing gas consumption compared to 80s-era equipment. The air conditioner operates at 13 SEER, which meets modern minimum standards but ranks below 14-16 SEER high-efficiency models. The reciprocating compressor runs single-stage, cycling fully on and off rather than modulating capacity, which simplifies maintenance but reduces part-load comfort. Multi-speed blower capability allows some operational flexibility across heating and cooling seasons.
Pros & Cons
Pros
- 96% AFUE furnace efficiency means lower heating costs and reduced fuel waste compared to older systems
- 13 SEER cooling provides solid summer performance for typical residential cooling loads up to 42,000 BTU
- Multi-speed blower motor allows customized airflow control for better comfort and efficiency
- Horizontal A-coil configuration works well in basements, attics, and crawl spaces with limited vertical space
- 10-year warranty with online registration covers major components and provides contractor support
- Single-stage reciprocating compressor is proven durable and easier to service than variable-speed alternatives
Cons
- 13 SEER rating is standard efficiency, not premium, so you won't see savings versus higher-tier competitors
- Single-stage operation cycles on and off rather than modulating, reducing part-load efficiency and comfort
- 75 dBA noise level during cooling operation may be noticeable in quiet residential settings
- Not ENERGY STAR certified, limiting eligibility for some rebate programs and tax credits
Who Should Buy
Best For
Homeowners in heating and cooling climates who prioritize reliable performance and reasonable operating costs over cutting-edge efficiency. Contractors building systems for price-conscious customers who want solid mid-range equipment with proven Goodman support.
Consider Alternatives If
Buyers in hot climates where high-SEER cooling dominates annual operating costs, or those seeking ENERGY STAR certification and maximum incentive eligibility.
Installation
Installation complexity is moderate. The unit requires 115V single-phase 60Hz power with breaker sizing between 23.9 and 40 amps. Suction line insulation at 3/8 inch thickness must be maintained, and the plastic PVC exhaust flue must vent right-side mounted. Refrigerant can run R410A or R22, depending on system configuration. Horizontal mounting requires proper condensate drain routing and adequate airflow clearance around the 21-inch width and 28.75-inch depth footprint.
Warranty & Reliability
Coverage includes 10 years of protection after online registration, a standard Goodman practice. This covers compressor, heat exchanger, and major components against manufacturing defects. Warranty does not cover installation errors, maintenance neglect, or improper refrigerant handling. Online registration activates coverage, so buyers must complete this step immediately after purchase to avoid warranty denial.
Specifications
| SKU | LS38783830 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 42,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A or R22 |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 75 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Energy Star | No |
| 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 | 3.5 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 | Upflow/Horizontal |
| Style | A-Coil |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Multi Speed |
| Maximum CFM | 2000 |
| Flue Location | Right |
| Burner Stages | Single |
| Fuel Type | Gas |
| Suction Line Insulation Thickness | 3/8" |
| Length | 30 feet |
Frequently Asked Questions
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