Review
Goodman's horizontal furnace combines practical design with solid efficiency ratings for the mid-market segment. The unit delivers 40,000 BTU heating output in a compact footprint, addressing a genuine installation challenge: systems that fit where traditional upright furnaces cannot. Marketed through Online Supply, this model targets contractors and homeowners balancing performance against realistic budgets. The 10-year warranty with registration provides reasonable protection for a gas heating appliance of this class.
Performance numbers tell a compelling story. The 96% AFUE rating exceeds standard requirements and qualifies for Energy Star certification, meaning owners see meaningful utility reductions compared to 80% AFUE units. The multi-speed ECM blower motor, capable of 800 CFM maximum, adjusts automatically to heating demand rather than running constantly. Cooling arrives at 23,600 BTU with a 16 SEER2 rating, though the single-stage compressor means AC efficiency trails dual-stage competitors. Two-stage burner operation reduces short-cycling and temperature swings typical of single-stage systems.
Pros & Cons
Pros
- 96% AFUE efficiency meets modern Energy Star standards for lower heating bills
- Multi-speed ECM blower motor provides quieter operation and better air distribution than fixed-speed alternatives
- Two-stage burner allows proportional heating, reducing temperature swings and improving comfort
- Horizontal configuration suits tight attic or crawlspace installations where vertical furnaces won't fit
- PVC/plastic flue venting simplifies exhaust routing in modern homes without masonry chimneys
Cons
- Spec sheet shows conflicting tonnage data: listed as both 2 ton and 3 ton, creating confusion about actual capacity
- 71.5 dB noise level runs slightly louder than premium models, noticeable in finished basements or utility closets
- Single-stage condenser limits cooling efficiency compared to dual-stage AC units on the market
Who Should Buy
Best For
Homeowners with horizontal installation requirements in attics or tight spaces who prioritize efficiency without premium pricing. Contractors installing replacement systems where existing horizontal configuration must be maintained.
Consider Alternatives If
Buyers seeking the quietest operation or those in climates with minimal heating demand who won't recoup efficiency premiums.
Installation
Installation suits experienced contractors or qualified technicians. The unit requires 208/230V single-phase power and demands proper breaker sizing between 12.4 to 20 amps. PVC flue venting simplifies exhaust routing compared to traditional metal venting. Refrigerant lines use standard 3/8 inch liquid and 3/4 inch suction connections. Horizontal mounting requires adequate clearance in attic or crawlspace environments, with ducting designed for rightside flue location.
Warranty & Reliability
Ten-year parts warranty activates upon online registration, providing solid coverage for compressor, heat exchanger, and components. This timeframe aligns with industry standards for mid-tier equipment. Warranty excludes labor and wear items. Registration requirement is a minor administrative step that unlocks full protection.
Specifications
| SKU | LS38343850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 23,600 |
| Heating BTU | 40,000 |
| Refrigerant | R410A or R22 |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 71.5 |
| Weight (in lbs) | 22.000000 |
| Feature | Spec |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Multi-Speed - ECM |
| Maximum CFM | 800 |
| Configuration | Horizontal |
| Flue Location | Right |
| Energy Star | Yes |
| Burner Stages | Two |
| Fuel Type | Gas |
| Height | 21.125" |
| Width | 17.5" |
| Depth | 26" |
| 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. |
| Replaces | GSX16S241 |
| SEER1 (Efficiency) | 16 |
| Condenser Stages | Single Stage |
| Compressor Type | Scroll |
| Liquid Valve Size | 3/8" |
| Suction Valve Size | 3/4" |
| Max Breaker Size | 20 amps |
| Min. Breaker Size | 12.4 amps |
| Tonnage | 3 Ton |
| Liquid Line | 3/8" |
| Suction Line | 3/4" |
| 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.