unbiased King Koil Innerspring Mattress Review, Ratings & Comparisons [why trust]

Based on 81 Actual Consumer Experiences

March 14, 2017

What You Need To Know

THE GOOD: Some models highly affordable • limited heat trap and initial odor / off gassing potential • endorsed by International Chiropractors Association.

THE BAD: Durability / longevity for most models is below average (like innerspring beds in general) • limited availability in western half of US.

THE COMPANY: King Koil (founded in 1898 and based in Willowbrook, IL) has 40+ licensees servicing 90+ countries. The company manufactures mostly innerspring mattresses including Laura Ashley, iMattress, World Luxury and Extended Life.

THE COMPETITION: See how King Koil compares to competitors including Serta, Sealy and Simmons in the innerspring mattress reviews – summary and the mattress comparison.

THE RETAILERS: There are many King Koil (and Laura Ashley) retailers on the U.S. East Coast, somewhat fewer in the Midwest, and fewest on the West Coast.

About Our Unbiased King Koil Mattress Research

The ratings below are based on 80+ King Koil / Laura Ashley innerspring mattress owner experiences for various models. Learn more about our research methodology and why you can trust our mattress reviews.

King Koil Mattress Ratings

The ratings below show how King Koil mattresses overall compare to the average mattress.

Owner satisfaction d+ King Koil innerspring mattresses overall (including Laura Ashley) have 65% owner satisfaction. More.
Durability / longevity d+ While durability / longevity can vary at least slightly by King Koil model, lifespan on average is similar to that of innerspring mattresses in general. More.
Affordable B- The mattresses are often priced $350-$2,800 depending on size and model with the average queen estimated to cost about $1,050 not including a foundation. More.
General support C+ Support can vary by model; models over $700 likely perform best.
Edge support B- Support for sitting or sleeping at the mattress edge is effective. But because it often consists of foam, it may deteriorate with wear / age.
Less (back) pain c Can vary by model; models over $700 likely perform best. (See mattresses and pain relief for general analysis.)
Conforming ability C+ A conforming mattress molds and contours to the sleeper's body providing a cradling, cloud-like, pressure-point-free sensation. Conforming ability can vary by King Koil model; those with memory foam and or latex tend to perform best.
Motion isolation c+ A mattress has motion isolation if it absorbs movement from one sleeper so that another is not disturbed. King Koil isolation can vary from poor to good depending on the model. Those with independently encased (pocket) coils perform best. (Motion isolation general analysis.)
No noise c+ Models that use a coil system other than independently encased (pocket) coils have potential to squeak and creak. (Mattress noise general analysis.)
No initial odor / off gassing b- Less than 8% of owners report a significant problem. Models with memory foam and or latex likely have the highest off gassing potential. (See mattress off gassing for general analysis.)
No sleeping hot b- Less than 6% of owners report a significant heat retention issue. (See mattress heat retention for general analysis.)
Easy to move on B- Soft models and or those with at least two inches of memory foam tend to provide at least some resistance to body movement.
Heavy person friendly B- While most models perform average in regard to being suited for heavy people, the Extended Life models likely perform above average for couples and people over 230 pounds. (See mattress buying guide for large people.)
Good for sex B- See mattresses and sex for general analysis.
Fast break in C+ Break-in on average likely takes about 12 days. Models with at least two inches of memory foam tend to have the longest break-in.
Easy to maintain c Most models are no-flip. Rotating the mattress (head to foot) two or three times a year is often necessary to combat sagging and body impression development. (Mattress maintenance general analysis.)
Ease to lift, handle, move c The mattresses often weigh 60 to 140 pounds with 100 pounds being about average. The more expensive, thicker models are heavier than the less expensive, thinner ones.

King Koil Company Ratings

The ratings below – based on consumer experiences and the evaluation of Sleep Like The Dead – show how King Koil compares to the average mattress manufacturer.

Warranty B- Warranty coverage is usually 10 years for all models except for Extended Life models which have 25 years. (See mattress warranties: what you should know.)
Customer service C+ Customer service quality including professionalism, speed, responsiveness, and helpfulness appears to be about average.
Specs disclosed B- Thickness of the various layers as well as details on the makeup of the materials may not be available. This lack of information can hinder informed decision making and comparison shopping.
Marketing accuracy B+ Claims made by the company about its products tend to be factual with limited hyperbole.
Time in business A Since 1898.
BBB rating a+ King Koil has a stable "A+" Better Business Bureau rating and appears to have a total of fewer than 17 complaints filed against it and its U.S. licensees in the past three years which is somewhat better than average for a mattress company of its size.
SLTD rating B- SLTD (Sleep Like The Dead) company rating of "B-" for King Koil is determined by averaging the above company ratings.

Key Comparisons

Owner Satisfaction

King Koil innerspring mattresses overall have 65% owner satisfaction. This rate is about average compared to all innerspring mattresses (64%) but below the average of all mattresses (73%).

king koil comparison chart

Durability / Longevity

While durability / longevity can vary at least slightly by King Koil model, lifespan on average is similar to that of innerspring mattresses in general – about six years.

Owner experience data suggests that King Koil mattresses will sag to an extent that undermines comfort / support within three years for 20%+ of owners. This is especially true for pillow tops – see the truth about pillow top mattresses. On the other hand, the King Koil Extended Life models likely perform at least somewhat better than average on this issue.

king koil mattress longevity compare
* partial estimate


King Koil mattresses on average are significantly less expensive than the average mattress. And they are priced similar to innerspring mattresses overall.

king koil price compare
* partial estimate

Sleep Like The Dead's mattress research in The News –


– As is true for innerspring mattresses in general, at least 20% of King Koil owners report that their mattress sagged and lost support within three years of regular use.

– The Extended Life model likely performs well for people over 230 pounds.

– Off gassing and heat retention tend not to be significant problems for King Koil beds.

– Models that use a coil system other than independently encased (pocket) coils have potential to regularly squeak and creak.

– There are many King Koil retailers on the East Coast, fewer in the Midwest, and few on the West Coast.





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