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York Diamond 80 Furnace

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Overview of the Diamond 80

The discontinued York Diamond 80 was a single-stage gas furnace with an 80% AFUE rating. It features a computerized blower motor for even air circulation, a tubular heat exchanger, an integrated computerized control system, and an induced combustion system to promote quiet operation.

The Diamond 80 was available in up-flow/horizontal and down-flow models and was made of a thin structure, allowing it to fit into narrow spaces. The unit also featured a pre-painted, corrosion-resistant steel cabinet for maximum protection.

In 1997, York International recalled the 80 downflow mid-efficiency furnaces with model numbers starting with P2DP, PBKD, and XED02. Faulty gluing of the insulation surrounding the heat exchanger, potentially causing the cabinet wall to fall on the heat exchanger and start a fire led to the recall which covered 21,000 units.

Furnace Filters for the York Diamond 80

Air Flow Configuration Cabinet Width Filters
Upflow 14-1/2" 1 14x26x1 filter
(bottom air return)
1 16x26x1 filter
(side air return)
Upflow 17-1/2" 1 16x26x1 filter
Upflow 21" 2 16x26x1 filters
(side air return)
1 20x26x1 filter
(bottom air return)
Upflow 24-1/2" 2 16x26x1 filters
(side air return)
1 24x26x1 filter
(bottom air return)
Downflow All 2 14x20x1 filters
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Consumer Reviews of the York Diamond 80

#9  of 12 York Furnaces
2 of 5 stars 2 reviews

  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied

best product icon  What are the 10 Best Furnaces?

Date created: 2011-12-09 Name: WATERPUMP
Years owned: 3

Satisfaction Rating:

3 of 5 stars Neutral

Why do they go throw memory boards so often? I put one on about once a year: parts and labor: $196.00.

Date created: 2011-05-02 Name: William S. Scott
Location: Jackson, WY
Years owned: 5

Satisfaction Rating:

1 of 5 stars Very Unsatisfied

"Never again"
Had a York furnace installed when we built our new home. Uggggg! Problems every year. We eventually got a new service company and they confirmed our fears, too many of the York systems are not so good. We got one of the systems they said they see allot of issues with, Were replacing the entire set-up next week. We chose Trane after looking at Carrier and Lennox also. We'll see, many of our neighbors have Trane and they have had no problems.

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Other Diamond 80 Reviews

The majority of online discussions about the York Diamond 80 center around furnace malfunctions or problems. Consumers on sites including answers.yahoo.com and gardenweb.com, report their heating unit stopped working for no apparent reason.

Some posters report having to replace parts and having subsequent problems develop.

Many people on doityourself.com wrote about problems with the blower motor malfunctioning sporadically, while even more contributors discussed miscellaneous system errors. One poster on doityourself.com complains that after owning a Diamond 80 for six years, the blower stopped functioning after the unit froze up. Most issues discussed online were solved with a new part, or a visit from a contractor.

York Diamond 80 Model Numbers

The Diamond 80 is available in different models which vary in efficiency and capacity.

Model Number AFUE BTUs per Hour
P4DNA12L03201 80 40,000
P4DNA12L04801 80 57,000
P4DNA12L06401 80 80,000
P4DNA12N03201 80 40,000
P4DNA12N04801 80 57,000
P4DNA12N06401 80 80,000
P4DNB12L08001 80 100,000
P4DNB12N08001 80 100,000
P4DNB16L06401 80 80,000
P4DNB16N06401 80 80,000
P4DNC16L09201 80 115,000
P4DNC16N09201 80 115,000
P4DNC20L08001 80 100,000
P4DNC20L09201 80 115,000
P4DNC20N08001 80 100,000
P4DNC20N09201 80 115,000
P4DND20L14001 80 130,000
P4DND20N14001 80 130,000
P4HUA12L03201 80 40,000
P4HUA12L04801 80 57,000
P4HUA12L06401 80 80,000
P4HUA12N03201 80 40,000
P4HUA12N04801 80 57,000
P4HUA12N06401 80 80,000
P4HUB12L08001 80 100,000
P4HUB12N08001 80 100,000
P4HUB16L06401 80 80,000
P4HUB16L08001 80 100,000
P4HUB16N06401 80 80,000
P4HUB16N08001 80 100,000
P4HUC16N09201 80 115,000
P4HUC20L06401 80 80,000
P4HUC20L08001 80 100,000
P4HUC20L09201 80 115,000
P4HUC20N06401 80 80,000
P4HUC20N08001 80 100,000
P4HUC20N09201 80 115,000
P4HUD20L10401 80 130,000
P4HUD20N10401 80 130,000

Diamond 80 Warranty

The Diamond 80 furnace is covered by a 20-year limited warranty on the heat exchangers, and a 5-year limited warranty on all other parts. Additional parts and labor coverage is available through the YORKCare Comfort Plan for up to 10 years.

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