Goodman Air Conditioning and Heating is a pioneer in the HVAC (Heating, Ventilation, and Air Conditioning) industry. Goodman Manufacturing produces gas furnaces for residential as well as commercial use. The Goodman gas furnace products are a subcategory of the manufacturing giant and have a well-established presence over domestic and global markets.

Goodman furnaces are well-built and fine-tuned in congruence with its usage and do not falter easily. The components are self-manufactured, which leaves very little room for unnecessary commotion and baffling errors.

Pros / GOOD

  • The ComfortLink technology is a lifesaver that does not allow any misinterpretation of instructions.
  • The gas furnaces offered by Goodman have superior build quality.
  • Thermally insulated cabinet to minimize heat loss.
  • The self-Diagnostic control board monitors for any anomalies in the system.
  • Revolutionary primary heat exchanger design.

Cons / BAD

  • The modulating gas valve is only present in a few variants.
  • The installation costs are very high.
  • The body of the cheaper variants is flimsy in construction.
  • The warranty program does not cover labor costs.
  • The warranty does not support DIY installations.


Goodman only produces gas furnaces and categorizes them into two types depending upon the efficiency ratings, rather than individually naming each series.

90+% AFUE gas furnaces

As the name depicts, the series offered by Goodman comprises of air conditioners that are able to cross the appreciable 90 percent AFUE efficiency ratings and even go over that depending upon the variants. There is some serious engineering applied to the lower end variants because even with a single-stage gas valve and multi-speed fan blower, the furnace is able to reach impressive efficiency ratings. They, however, lack the proprietary communicating technology and a few other features that are only found in the higher-end variants.

Goodman GCES801005CN 80% AFUE 100,000 BTU 1 Stage Downflow/Horizontal Gas  Furnace

80% AFUE gas furnace

The 80% AFUE series gas furnaces offered by Goodman are able to hit the maximum efficiency rating as described in the name. The variants lying in this series lack a modulating gas valve and only use a two-stage or single-stage gas valve. These are cost-effective models and lack most of the features that the 90%+ models ship with, and less fuel-efficient too.


The stage of a gas furnace refers to the variation it can provide in its operability as the weather worsens. The Goodman gas furnaces have the following stage of operation-

Single Stage – The single-stage gas furnace runs on a single preset load, at all times. The gas furnace will run at maximum load every single time and consume a lot of power than other variants. It is inept to operate in increments, thereby drawing a lot of power.

Two-Stage – Then two-stage motors operate at 60-65 percent of load at times when the weather outside is not that cold. Due to distributed valve operation, the two-stage gas furnace can curb the fuel consumption significantly, as compared to the single-stage motor.

Modulating/Variable – Modulating gas furnaces adjust themselves according to the change in outside temperature and offer seamless cooling with a huge drop in operating costs.

Fuel Type

The furnaces offered by Goodman use propane and natural gas to power up the unit and combust to produce heat. They do not produce oil-based furnaces.


The AFUE (Annual Fuel Utilization Efficiency) of a gas furnace is used to measure its efficiency. It is obtained by dividing the ratio of heat output by the input. The rating describes how judiciously a gas furnace uses the fuel supplied to it. The Goodman gas furnaces can meet the desired efficiency ratings with their 90% plus AFUE models. They can go as high as 98 percent and lie in the 90 percent ballpark for almost all variants. The 80 percent series efficiency is capped at 80 and cannot go beyond that, considering the budget-centric build.


The BTU is the capacity of the gas furnace that can effectively heat an area without any hassle. The range of Goodman gas furnace is from 40000-120000 BTU, and can effectively heat an area ranging from 600-1000 square-foot to 2300-3000 square-foot house respectively.


The position of the Goodman furnace comes in horizontal, vertical, and multi-position models that can fit in with whatever style the consumer is comfortable with.

Other Features

  • The gas furnaces offered by Goodman are ComfortNet compatible which means seamless communication between the thermostat and the unit.

  • The ComfortNet enabled gas furnace system is capable of reaching higher efficiency ratings and more precision control.

  • The thermally insulated cabinet can prevent the leakage of the generated heat and minimizing the loss to as low as two percent.

  • The variable-speed ECM motor provides quieter operation and system startups and shutdowns.
  • The models are energy star rated and do not increase the operating costs.

Installation and maintenance

Goodman Overview, Products, and Resources |

The Goodman gas furnace units should only be installed by a certified HVAC professional that has a complete idea of the needs of the house. The inspection process should be precise and the installation must be devoid of any wear and tear to the unit. Periodic filter replacement and corrosion check along with dust cleaning of the fan should be done by a professional to check for any irregularities in the unit. The inspection also unravels any wear and tear of the components.


Goodman gas furnaces come with a 5-year parts limited warranty that is activated on the day of the purchase. It does not require any paperwork and is hassle-free. However, with an expensive product like this the company offers an extended 10-year warranty if you register the product on their website and a lifetime compressor warranty on select models. The consumers can also choose from the select warranty feature which comes at a price and increases the cover-period of intricate parts.


Goodman is a band that takes pride in its products and has a diverse lineup of gas furnaces, covering the needs of almost every residence. The choice can be overwhelming with such a diverse lineup. The component integration is questionable in low-end variants. The warranty program could be a little easier on the customers and it does not support DIY installations.