Review
Goodman's 3-ton horizontal A-coil system combines a high-efficiency gas furnace with an air conditioning condenser in one compact unit. Marketed toward contractors and budget-conscious homeowners, this 100,000 BTU furnace and 34,800 BTU cooler addresses the growing demand for integrated heating-cooling solutions. The horizontal orientation fits tight spaces like basements or crawl spaces where traditional upright units won't fit. Goodman's reputation for straightforward engineering makes this a sensible choice for replacement jobs.
Performance specs tell an interesting story. The furnace delivers 97% AFUE efficiency with modulating burners that fire up gradually rather than on-off cycling, reducing energy waste and keeping rooms more comfortable. Cooling operates at 16 SEER2, an ENERGY STAR threshold that qualifies for utility rebates in many states. However, the single-stage scroll compressor cannot adjust capacity, so it runs full-tilt or off, missing efficiency gains at part-load conditions. The variable-speed ECM blower motor compensates somewhat by ramping down airflow during mild days.
Pros & Cons
Pros
- 97% AFUE furnace efficiency reduces natural gas consumption by roughly 15-20% compared to 80% units
- 16 SEER2 rating qualifies for ENERGY STAR certification and utility rebates in most regions
- Modulating burner stages optimize heating output, reducing temperature swings and improving comfort
- Variable-speed ECM blower motor adjusts automatically to match heating and cooling demand
- PVC exhaust flue simplifies venting and reduces installation costs compared to metal alternatives
Cons
- Spec sheet lists conflicting tonnage (title says 3 Ton but specs show 3.5 Ton, creating confusion)
- Single-stage cooling compressor cannot modulate like the furnace, reducing efficiency at partial loads
- 34,800 cooling BTU falls slightly short of true 3-ton capacity (36,000 BTU nominal), limiting undersizing flexibility
Who Should Buy
Best For
Contractors installing replacement systems in homes with existing ductwork and homeowners in mild to moderate climates seeking cost-effective heating and cooling. This system suits budgets where efficiency rebates offset the moderate equipment cost.
Consider Alternatives If
Hot climates with extreme cooling demands should look at two-stage or variable-capacity air conditioners, and buyers in very cold regions may benefit from higher-stage furnace designs.
Installation
This horizontal coil requires proper ductwork connections and adequate return air pathways. The 115V, single-phase electrical supply needs a 18.7 to 30 amp breaker, standard for most residential panels. PVC flue venting simplifies installation compared to metal ducts. Technicians must match refrigerant type (R410A or R22) with existing linesets and ensure suction line insulation thickness meets the 3/4 inch spec to prevent efficiency loss and condensation.
Warranty & Reliability
Goodman covers parts for 10 years when registered online, a reasonable protection period for compressors and heat exchanger defects. Labor coverage details are not listed here, so verify with your installer whether additional extended warranties apply. Online registration is required to activate coverage, a minor administrative step many buyers overlook initially.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 34,800 |
| Heating BTU | 100,000 |
| Refrigerant | R410A or R22 |
| Electrical | 115 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73.5 |
| Weight (in lbs) | 30.000000 |
| Feature | Spec |
| Energy Star | Yes |
| SEER1 (Efficiency) | 16 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Max Breaker Size | 30 amps |
| Min. Breaker Size | 18.7 amps |
| Tonnage | 3.5 Ton |
| Height | 34.5" |
| Width | 21" |
| Depth | 28.75" |
| Resources | Goodman Brochure Goodman Specifications 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 |
| Liquid Line | 3/8" |
| Suction Line | 7/8" |
| Style | A-Coil |
| AHRI Certificate Number | 7424267 |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Product Features | Rebate Available |
| Furnace Efficiency / AFUE | 97% |
| Blower Motor | Variable Speed - ECM |
| Maximum CFM | 2000 |
| Flue Location | Right |
| Burner Stages | Modulating |
| Fuel Type | Propane, Natural Gas |
| 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.