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#2 of 6 TEMPSTAR Furnaces

Updated: Oct 30, 2015

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Overview of the N8MS

The Tempstar N8MS is a single-stage gas furnace with an efficiency rating of 80% AFUE. The N8MS is available as the N8MSN (Standard) and N8MSL (Low NOx). It is designed for multi-position installation -- upflow, downflow, and horizontal left/right -- and its 33 1/3" height allows greater installation flexibility. It features an RPG (Rigid Press Joint) aluminized steel primary heat exchanger for efficient heat transfer. A fixed-speed blower motor and single-stage gas valve help provide even, comfortable temperatures. It has a one-piece prepainted steel cabinet and is factory shipped for natural gas, with kits available for propane conversion.

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Consumer Reviews of the TEMPSTAR N8MS

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  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied

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Date created: 2015-10-15 Name: Doctor "D"
Location: Colorado

Satisfaction Rating:

5 of 5 stars

"20 years and still working"
All the reviews you read mean nothing. They all look the same, you hate it or you love it. I have a 20 year old Tempstar that works fine with only minor repairs over its life.

Date created: 2014-10-08 Name: joe
Location: Massachusetts

Satisfaction Rating:

5 of 5 stars

"You're all insane"
First of all, Heil and Tempstar are the same exact product, made in the same factory. They are both part of International Comfort Products - look it up. Second, 99% of product failures are due to improper install, so before you complain about the product you should make sure you are not getting the run around from your contractor (which you are). Lastly, to the review about the n8ms model furnace, the furnace does not cool. The evaporator coil, which is a completely separate piece of equipment, does the cooling in conjunction with the condenser outside. So the leak was not in the furnace, it was in the coil. Everyone who is complaining about the brand of equipment should only be complaining about how bad they got ripped off by the horrible contractor that they hired that botched the install.

Date created: 2013-01-24 Name: Barbara Moran
Location: Melbourne

Satisfaction Rating:

1 of 5 stars

"The Worst Unit-Air and Heat- EVER"
Here are the numbers on the Model..N8MSN0701412A Serial a104519709. This unit has been nothing but trouble since 2 months after installation. The air was not cooling. Finally they said there was a leak in a valve. Cost me $169 to have 4 pounds freon plus service call. Still not doing the job my 17 year old Heil, which was still in good working order however my son thought it best to replace the unit due to it's age. I now have a lemon tempstar. The heater just had 2 parts replaced which cost another $169. The heater works when it feels like it, it takes 3 or 4 efforts before the heater actually puts out heat. I rue the day I ever had this unit installed. Give me back my heil any day over this pile of junk.

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N8MS Warranty

Product registration is required within 90 days of installation for maximum warranty coverage. The warranty for the Tempstar N8MS furnace is comprised of the following:

  • 20-year limited warranty on the heat exchanger
  • 10-year limited warranty on parts

Labor costs are not covered by the warranty.

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