Review
The Goodman 5-ton horizontal gas furnace and air conditioning system targets the replacement market where space constraints limit equipment choices. This unit combines a 120,000 BTU furnace with a 54,000 BTU cooling capacity in a compact horizontal configuration measuring 24.5 inches tall by 26 inches wide. Online Supply positions this as a value-conscious option for contractors and homeowners upgrading existing horizontal installations, particularly in attics and basement mechanical closets where traditional upflow units simply won't fit.
Performance metrics tell a compelling efficiency story. The 97% AFUE furnace rating means 97 cents of every dollar spent on gas becomes usable heat, significantly outperforming standard 80-90% units. The modulating burner adjusts firing stages continuously rather than cycling on and off, reducing temperature swings and improving comfort. The variable-speed ECM blower motor operates at the exact CFM needed, with a maximum of 2000 CFM available. The 15 SEER cooling rating and R410A refrigerant deliver respectable air conditioning performance, though newer units reach 16-18 SEER.
Pros & Cons
Pros
- 97% AFUE furnace rating is excellent for natural gas heating, reducing fuel consumption significantly compared to 80-90% alternatives
- Modulating burner adjusts flame intensity throughout the heating cycle, improving comfort and reducing temperature swings
- Variable-speed ECM blower motor runs only as hard as needed, lowering electricity use and noise compared to single-speed models
- Horizontal configuration fits tight spaces where traditional upflow furnaces won't work
- Energy Star certified with 10-year warranty including online registration coverage
Cons
- 15 SEER cooling efficiency is respectable but trails newer 16+ SEER units that may offer better long-term operating costs
- 73 dB noise level is moderately loud during operation, comparable to older equipment but noticeable in finished basements
- Requires PVC exhaust venting, which adds installation complexity and cost compared to traditional metal flue systems
Who Should Buy
Best For
Homeowners with horizontal attic or basement installations seeking a cost-effective efficiency upgrade without replacing ductwork. Contractors installing replacement systems in tight spaces where upflow furnaces cannot fit will appreciate the compact 24.5-inch height and left-side flue location flexibility.
Consider Alternatives If
Buyers prioritizing cutting-edge cooling efficiency or those wanting the absolute quietest operation should compare 16+ SEER units with lower decibel ratings.
Installation
This horizontal configuration simplifies installation in tight spaces but requires attention to flue routing. The unit accepts PVC exhaust venting with right-side flue placement, necessitating proper sloped PVC runs to prevent condensate backup. The 208/230V single-phase electrical requirement demands proper breaker sizing between 29.6 and 50 amps. Standard refrigerant line sizing uses 3/8-inch liquid and 1 1/8-inch suction lines with half-inch insulation. Installation manuals are available as PDF downloads.
Warranty & Reliability
Goodman provides 10 years of parts coverage with online registration, a solid warranty matching industry standards for mid-tier equipment. Registration is straightforward and extends protection across the entire system. This warranty covers compressor, heat exchanger, and control components but excludes normal wear items. The evaporator coil carries separate coverage documentation. Ten years of protection suits homeowners planning 15-20 year equipment lifecycles.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 54,000 |
| Heating BTU | 120,000 |
| Refrigerant | R410A or R22 |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 73 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| AHRI Certificate Number | 7424268 |
| 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 |
| Configuration | Horizontal |
| Flue Location | Right |
| Energy Star | Yes |
| Burner Stages | Modulating |
| Fuel Type | Propane, Natural Gas |
| Height | 24.5" |
| Width | 26" |
| Depth | 21.125" |
| Resources | CHPF Installation Manual CHPF 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) | 16 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 7/8" |
| Max Breaker Size | 50 amps |
| Min. Breaker Size | 29.6 amps |
| Tonnage | 5 Ton |
| Liquid Line | 3/8" |
| Suction Line | 1 1/8" |
| Style | A-Coil |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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