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GOODMAN GMH8 Furnace
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Goodman manufactures light commercial and residential heating, air conditioning and indoor air quality products. The GMH8 series is a gas furnace that carries the following features:
- A quiet four-speed circular motor
- A control board that remembers the last five diagnostic codes
- 110-volt silicon nitride igniter
- Designed for horizontal, upflow, left or right installation
The AFUE rating of the GMH8 furnace is 80% which means that for every dollar a customer spends, 80 cents contributes to heating the home.
In addition, the GMH8 makes provision for humidifiers and electronic air cleaners, plus there is a right or left connection for electric/gas service.
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Recent Questions
Consumer Reviews of the GOODMAN GMH8
Date created: 2010-03-07
Name: Rich Parker
Location: Coastal Southern California
Years owned: 1
Satisfaction Rating:
Very Satisfied
Review:
"Good Furnace but Noisy"
I had a gmh80704bx installed last summer to replace a 30-year-old 90k btu furnace. We live in coastal Southern California in a 1700 Sq Ft. home so requirements are modest. The furnace has been perfect except that it is noisier than the furnace it replaced. The burner sounds like a blow-torch in the hall closet. I installed weather striping and additional (tight) latches on the furnace closet door and it's tolerable. The good news is that, despite heavy usage this winter, our gas bills have been about 15% lower than the same months last year.
GOODMAN GMH8 Model Numbers
The GMH8 is available in different models which vary in efficiency and capacity.
| Model Number | AFUE | BTUs per Hour |
| GMH80453AN | 80 | 45,000 |
| GMH80703AN | 80 | 70,000 |
| GMH80704BN | 80 | 70,000 |
| GMH80903BN | 80 | 90,000 |
| GMH80904BN | 80 | 90,000 |
| GMH80905CN | 80 | 90,000 |
| GMH81155CN | 80 | 115,000 |
| GMH81405DN | 80 | 140,000 |
GMH8 Warranty
Goodman offers the following warranty on the GMH8 furnace:
- Lifetime warranty on heat exchangers registered to the original homeowner
- 10-year limited warranty on all other functional parts
In the event that the above does not apply then Goodman will offer a 20 year warranty on the heat exchanger and 5 years on all remaining parts. It should be noted that the warranty only applies if the furnace is installed in the owner's residence and properly registered at the Goodman's website within two months of installation.
