Review
Goodman's horizontal furnace sits in the middle tier of residential heating equipment, balancing efficiency gains against budget concerns. With a 97% AFUE rating and modulating burner technology, this system targets contractors doing replacement work and homeowners looking to cut heating costs without premium pricing. The horizontal configuration specifically solves a real installation problem, making it viable for attics and crawlspaces where traditional upflow furnaces won't fit. Online Supply markets this as a practical choice for mid-range projects seeking both performance and accessibility.
Performance specs tell a solid story. The modulating burner fires at whatever output matches demand, reducing energy waste compared to single-stage units that cycle on and off. The variable-speed ECM motor can deliver up to 2,000 CFM while consuming less power than fixed-speed blowers. However, a discrepancy appears between the title claiming 15 SEER and the spec sheet showing 16 SEER1 for cooling, worth clarifying before purchase. The 120,000 BTU heating output pairs oddly with 34,800 BTU cooling capacity, suggesting this combination works better in heating-focused climates than balanced regions.
Pros & Cons
Pros
- 97% AFUE furnace efficiency tops most residential systems, cutting heating costs noticeably
- Modulating burner adjusts output from 30% to 100%, improving comfort and reducing cycling losses
- Variable-speed ECM motor delivers up to 2,000 CFM while using less electricity than fixed-speed alternatives
- Horizontal configuration fits tight spaces where standard upflow units won't work
- PVC exhaust flue compatible with modern condensing designs, lowering installation costs
- ENERGY STAR certified and qualifies for rebates in many utility territories
Cons
- SEER1 rating shows 16 in specs but title claims 15 SEER, creating product label confusion
- 3.5 ton cooling capacity exceeds 3 ton heating BTU by 15%, indicating potential oversizing for heating-dominant climates
- 73.5 dBA noise level runs louder than premium models, noticeable in finished basements or living areas
- Refrigerant options include older R22, limiting future service flexibility and increasing costs
Who Should Buy
Best For
Contractors replacing old horizontal furnaces in attics or cramped mechanical spaces will appreciate the compact 24.5-inch height and modulating efficiency. Homeowners in moderate climates wanting lower heating bills and rebate eligibility should seriously consider this Goodman unit.
Consider Alternatives If
Skip this if you need quiet operation near living spaces, prefer single-refrigerant standardization, or work in heating-heavy cold climates where oversized cooling capacity wastes money.
Installation
Installation requires 208/230V single-phase power and breaker sizing between 18.7 and 30 amps, standard for residential work. The horizontal case fits tight spaces at 24.5 inches tall, 21.125 inches wide, and 26 inches deep. PVC exhaust flue routing is straightforward in modern homes. Right-side flue location needs verification during rough-in planning. Proper ductwork connections, refrigerant line insulation at 3/4 inch thickness, and 50-foot line set management are essential for system longevity.
Warranty & Reliability
Goodman backs this furnace with a solid 10-year warranty covering parts and labor, provided you complete online registration after installation. This warranty period matches competitor offerings and covers compressor, blower motor, and heat exchanger failures. Registration is straightforward and required within 30 days of startup. Warranty coverage protects your investment against manufacturing defects but excludes wear items like filters and capacitors.
Specifications
| SKU | LS38783850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 34,800 |
| 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) | 73.5 |
| Weight (in lbs) | 30.000000 |
| 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 | 21.125" |
| 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. |
| 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 |
| 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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