Lennox G71P Furnaces | FurnaceCompare®

Lennox G71P Furnace Overview

The Lennox G71P is a (discontinued) variable speed gas furnace made for use in residential settings. It is also known as G71MMP. In 2008, the G71P won the Silver award from the Dealer Design Award Program. It is rated for 95% AFUE and is Energy Star qualified. This furnace may also qualify buyers to a federal tax credit, according to Lennox’s product brochure.

Its technology includes a patented steel primary heat exchanger and stainless steel secondary heat exchanger. It is equipped with a variable-capacity gas valve and Lennox’s Precise Comfort technology, which the company says controls temperature and airflow in small increments for more efficient use of fuel. The G71P can also be used with an electric heat pump. The Lennox company claims the G71P can save a household up to $1000 on utility costs per year.

Furnace Filters for the Lennox G71P

Air Flow Configuration Cabinet Width Filters
All 17.5″ 16x25x1 (side)
16x25x1 (bottom)
All 21″ 1 16x25x1 (side)
1 20x25x1 (bottom)
All 24.5″ 1 16x25x1 (side)
1 24x25x1 (bottom)

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Consumer Reviews of Lennox G71P


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #8 of 29 Lennox Furnace
  • 41.67% of customers recommended

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Lennox G71P Furnace Reviews

Showing 11-12 of 12 reviews

"Lennox G71MPP 95% AFUE / XC21 20SEER AC"

5.0 rating
Very Satisfied

I purchased a new Lennox g71mpp 95% afue furnace with variable speed motor along with the xc21 20 seer air conditioner last November, 2008. Overall, I’d easily rate this as one of the best purchases I’ve ever made. By replacing my old (as in fifty-year-old!)Lennox pulse furnace, and a twenty-year old AC, I’m not only living in a better, more comfortable environment, but am also saving well over $200/month in utilities! Hats off to Lozier Heating & Cooling in West Des Moines, Iowa.

"Too Bad People Cant Trust Their Installers"

5.0 rating
Very Satisfied

I’m in the middle of a large renovation and am installing a g71 unit in my home. Old unit is Carrier but not overly happy with it. Possibly some of the issues are from not having the best installer. But my biggest rant is all you people who are suckered by bad maintenance companies!!! Then you slag the equipment!!! Doesn’t take much time to investigate a problem on the web before someone feeds you a huge line of p__p. Wish everyone paid attention in school. Be a lot less people getting away with emptying your wallet with a ton of bs. These units, are awesome and will work for years if you find someone to service it that can be trusted!!!

ON, Canada

Other G71P Reviews

Posters in online forums have generally positive things to say about this furnace, though some have experienced problems. In this forum thread, several posters say that problems with the G71MPP are often due to improper installation, rather than the furnace itself.

Lennox G71P Model Numbers

The G71P is available in different models which vary in efficiency and capacity.

Model Number AFUE BTUs per Hour
G71MPP-36C-090 95 88,000
G71MPP-60C-090 95 88,000
G71MPP-60C-110 95 110,000
G71MPP-60D-135 95 132,000
G71MPP-60D-135-* 95 132,000

G71P Warranty

G71P furnaces carry a limited lifetime warranty on heat exchanger parts and a 10 year warranty on all other components.

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