3 Ton 16 SEER 80% AFUE 80,000 BTU Goodman Gas Furnace and Air Conditioner System - Horizontal Review 2026

// Bottom Line

This horizontal Goodman system delivers excellent value for homeowners replacing older equipment or contractors building budget-conscious packages. The 16 SEER rating and 80% AFUE efficiency hit the sweet spot between performance and affordability, making it ideal for moderate climates where you don't need top-tier efficiency.

Review

The Goodman CHPF3743D6 is a straightforward, no-nonsense combination system that delivers real value at $2160. This 3-ton horizontal unit pairs a 36,000 BTU air conditioner with an 80,000 BTU furnace, making it suitable for homes up to 1500 square feet. Goodman has built a reputation for no-frills reliability, and this SKU maintains that standard. The horizontal orientation appeals to retrofit work and new builds where attic space demands flexibility.

Performance numbers tell a practical story. The air conditioner achieves 16 SEER cooling efficiency with a two-stage scroll compressor and meets ENERGY STAR standards. The furnace delivers 80% AFUE efficiency with two-stage heating and a variable-speed blower reaching 2000 CFM maximum. These aren't bleeding-edge specifications, but they're competitive for the price. Real-world operation produces 70.4 dBA noise, roughly equivalent to background conversation, thanks to the staged compressor and dual-stage burner.

Pros & Cons

Pros

16 SEER cooling efficiency exceeds ENERGY STAR standards at this price point
Two-stage heating and cooling allow for quieter operation and better comfort control
Variable-speed blower motor adjusts CFM up to 2000 for improved distribution
Horizontal configuration fits tight spaces and attics where upflow isn't possible
10-year warranty with online registration provides solid coverage
Scroll compressor design is proven reliable and relatively quiet at 70.4 dBA

Cons

80% AFUE is entry-level for furnaces, higher-efficiency models reach 95% AFUE
R410A/R22 refrigerant compatibility creates some technical complexity during installation
Weight of 63 lbs requires two people to safely position in tight horizontal spaces

Who Should Buy

Best For

This system suits homeowners in moderate climates (not extreme heating or cooling zones) who want reliable performance without premium pricing. Contractors appreciate it for new construction, replacements, and customer budgets under $2500 for complete system installation.

Consider Alternatives If

Skip this if you live in very cold climates needing high-efficiency heating (90%+ AFUE) or hot, humid regions requiring stronger cooling capacity.

3 Ton 16 SEER 80% AFUE 80,000 BTU Goodman Gas Furn

$2160

Buy at HVACDirect →

Installation

Installation demands standard HVAC skills. The horizontal A-coil design requires metal exhaust flue venting and works with natural gas or propane. Electrical needs are modest at 120V single-phase 60 Hz with a 21.8 to 35-amp breaker range. Refrigerant lines use 3/8 inch suction and 7/8 inch liquid connections with sweat valve fittings. Most experienced installers complete the job in one day.

Warranty & Reliability

Goodman backs this system with 10 years of parts coverage upon online registration. This is solid protection for the price tier and covers compressor, coil, and component failures. However, labor and refrigerant are typically excluded, which is standard industry practice. Registration is mandatory to activate the warranty.

Specifications

SKU	CHPF3743D6
Brand/Manufacturer	Goodman
Cooling BTU	36,000
Heating BTU	80,000
Refrigerant	R410A or R22
Electrical	120 V. 1 Phase 60 Hz
Warranty	10 Years with Online Registration
Decibel Level (dBA)	70.4
Weight (in lbs)	63.000000
Feature	Spec
Energy Star	Yes
SEER1 (Efficiency)	16
Condenser Stages	Two Stage
Compressor Type	Scroll
Liquid Valve Size	3/8"
Suction Valve Size	3/4"
Max Breaker Size	35 amps
Min. Breaker Size	21.8 amps
Tonnage	3.5 Ton
Valve Type	Sweat
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.
AHRI Certificate Number	204633307
Airflow Direction	Upflow/Horizontal
Exhaust Flue Requirement	Metal
Furnace Efficiency / AFUE	80%
Blower Motor	Variable Speed
Maximum CFM	2000
Configuration	Horizontal
Burner Stages	Two
Fuel Type	Propane, Natural Gas
Liquid Line	3/8"
Suction Line	7/8"
Style	A-Coil

Frequently Asked Questions

Why does this system support both R410A and R22 refrigerant? +

This unit ships with R410A, the modern standard, but the components are compatible with older R22 systems during retrofit work. This flexibility helps contractors maintain existing R22 installations without replacing the entire coil assembly. Always verify the nameplate before charging.

Can I install this horizontally in my attic with limited height? +

Yes. The 24.5 inch height, 21.125 inch width, and 26 inch depth fit most attic spaces. The horizontal configuration is specifically engineered for this application. Ensure adequate clearance for airflow around the unit, typically 12 inches minimum on all sides per manufacturer guidelines.

How does 16 SEER compare to higher-efficiency models? +

16 SEER is solid mid-range efficiency. Premium systems reach 18-20 SEER but cost 30-40% more. For moderate climates with moderate cooling demand, 16 SEER delivers 70-80% of the efficiency gain of top-tier units at significantly lower cost. The payback period rarely justifies premium efficiency below $0.15 per kilowatt.

Is the 80% AFUE furnace adequate for cold climates? +

80% AFUE is acceptable in moderate zones but underperforms in states like Minnesota or Michigan. Those regions should target 90-95% AFUE models to minimize heating bills during brutal winters. For milder climates, 80% AFUE works fine and saves upfront capital.

What does the 10-year warranty actually cover? +

The warranty covers defects in parts, including the compressor and indoor coil. Labor, refrigerant charge, and routine maintenance are excluded. Registration must happen within 60 days of installation to activate coverage. Keep your receipt and registration confirmation.

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