Consumer Reports Rates Pellet Stoves (and what they don't tell you)

Updated in Feb. 2021 - Consumer Reports just released their second assessment of wood and pellet stoves in the March 2021 issue. This was an educational article that had mostly accurate information, however the review of pellet stoves in their October, 2009 issue (pages 26-28) included actual product testing. 

The recent article in Consumer Reports highlighted the new 26% tax credit for wood and pellet stoves at 75% efficiency or higher, and it discussed the many differences between wood and pellet stoves.  Overall, its excellent information for consumers who are just learning about the technology.  Unfortunately, they made a few very obvious mistakes which would have been caught by any expert, if they had consulted one. For instance, they said "With a wood stove, federal safety standards require at least a 3-foot clearance from any wall or combustible material." Three feet clearances can apply to unlisted stoves but modern EPA certified stoves have an average clearances of 6-12 inches in the back and 10-18 on the side.  We urge Consumer Reports to consult with independent experts in the future and to make corrections on this article.

There are precious few independent, objective reviews of pellet or wood stoves so the 2009 product testing was a very welcome development. They reviewed six and recommend two.

The Harman P68, the most expensive
 and the most highly rated stove
by Consumer Reports. 

The Alliance for Green Heat also reviewed 6 stoves in 2015, including two of the ones reviewed by Consumer Reports.  Click here for the 2015 rating of pellet stoves.  The Alliance tested for cleanliness, efficiency, maintenance, heat output and glass visibility.  And click here for Six tips to buy the right pellet stove.

While the 2009 Consumer Reports (CR) stove ratings appear fair and objective, they did not test for or list information that is very important for consumers.  For example, they didn't list the emissions ratings, though these independent, third-party ratings are easy to look up online. While pellet stoves generally are very clean, and much cleaner than woodstoves, some are lots cleaner than others.   

They also did not touch on the issue of efficiency, which is extremely important with pellet stoves because they range from 50 – 80% efficiency and most manufacturer used to refuse to release third party efficiency numbers to consumers.  Today, they are required to.  In the past, most stove manufacturers calculated their efficiency using a variety of non-standard methods and often exaggerated the results, leading consumers to think they were purchasing a high efficiency appliance when in fact they may have purchased a pellet guzzling one.  All wood and pellet stoves now have third party verified, actual efficiency ratings. But when it comes to pellet stoves, misperceptions persist, year after year.

Consumer Reports did not mention which stoves were EPA certified and which aren't (as of 2016, all new pellet stoves must be EPA certified).  EPA certified pellet stoves tend to be higher efficiency.  As of May 2014, all the stoves rated by Consumer Reports were EPA certified except for the Napoleon NPS40, one of the higher ranked stoves.  The manufacturer confirmed in 2009 that it had not been emission tested but as of May 2014 a slightly modified version of the same stove tests at 2.4 grams an hour.  Prior to 2016, many manufacturers designed their pellet stove in a way that it doesn't have to be certified by the EPA. But by avoiding EPA certification, these designs usually lower the efficiency of the stove between 10 and 30%.

Also, Consumer Reports did not test for fan and augur noise. That is a common complaint with pellet stoves and an outfit like Consumer Reports is perfect for that kind of testing.  Unfortunately, there is still no entity that tests for fan or auger noise.

Consumer Reports also gave extremely short shrift to pellet stoves as a low carbon, renewable energy appliance. It did not say how much carbon could or would be offset by limiting use of a fossil fuel furnace. And, while it gave maximum payback times, it did not give best case/minimum payback periods, which can be in the 3-4 year range, depending on prices of fossil fuels that year and what type of fuel is avoided. As of fall of 2020, gas and even oil prices are very low, but pellet fuel can still save money for homes using propane, electric resistance or even oil or gas if a pellet stove allows you to only heat a smaller core part of a larger, leaky home.  

Overall, the Alliance for Green Heat believes that the CR stove ratings are fair and very useful for consumers. We only wish that next time, they test for emissions, efficiency and noise and that they mention the environmental benefits of using a low carbon fuel to replace fossil fuels. 

Here's a summary of the ratings. The review in the magazine has more details. (Pellet stoves may be eligible for state rebates or tax credits in New York, Maryland and elsewhere.  Since the CR review is now over 10 years old, some of these models aren't still in production or have been redesigned and retested - and they now cost more.

1. The highest ranking is a Harman P68 which got 87 points and costs $3,900. Harman is a recognized leader in the industry and is known for quality. (Emits 1.8 grams of particulate per hour).

2. The next highest is the Napoleon NPS40, at 85 points and price tag of only $2,350. (Emissions levels were not tested in 2009 when the review was done, but a similar, updated model has been tested at 2.4 grams an hour.)

3.  The Lopi Leyden received 75 points and sells for $3,600. (Emts .9 grams an hour.)

4. The Enviro Empress received 67 points and cost $2,900. (Emits 2 grams per hour.)

5. The Quadra-Fire Castile received 64 points and cost $2,700. (Emits 0.8 grams per hour).

6. Summers Heat (55-SHP10L at Lowes) also sold at Home Depot under the Englander brand received 58 points and cost $1,300. (Emits 1.6 grams per hour).

Click here for an in-depth and educational review of reliable pellet stoves.