|
Our tables rating individual firms will be more valuable to you if you know how the data were gathered and how they should be interpreted.
We regularly survey area CHECKBOOK and Consumer Reports subscribers for their feedback on services they have used. For our survey on carpet cleaners, we asked consumers to rate their experiences with firms they had most recently used "inferior," "adequate," or "superior" on several aspects of service, including "doing service properly on the first try," "starting and completing service promptly," "letting you know cost early," "neatness of work," "advice on service options and costs," and "overall performance." Our Ratings Tables show the percent of each firm's surveyed customers who rated it "superior" (as opposed to "inferior" or "adequate") on each question. Our Ratings Tables also show the percent of each firm's surveyed customers who rated it "superior" or "adequate" (as opposed to "inferior") for "overall performance."
We have included on our Ratings Tables all of the firms for which we received at least 10 ratings on our customer surveys. If a firm is not listed on our Ratings Tables, it simply means we did not receive at least 10 ratings for it.
Since many firms were rated by rather small numbers of raters, small differences between two firms in the percentage of raters who gave a particular rating (say, "superior") should be ignored. The table below gives a rough guide to minimum differences you should look for in deciding on one firm over another.
When using these survey data, remember that the questions are to some degree subjective and that the differences among firms might be explained by differences in the personalities, backgrounds, critical standards, and other characteristics of the raters or by biases these raters might have.
For firms that were evaluated in our last full, published report, our Ratings Tables show the number of complaints filed with local Better Business Bureaus (BBB) for a recent three-year period. These complaint counts include all complaints filed against a firm, not just complaints relating to carpet and rug cleaning work, so these complaints may be related to disputes that arose from other types of business the firms conduct.
Where we were able to, we have also reported on our Ratings Tables a complaint rate for each firm, calculated by dividing the number of complaints by our measure of the number of full-time-equivalent employees who perform residential work for the firms. These complaint rates are intended as a rough way to take into account volume of work and the fact that firms that do more work are exposed to a greater risk of incurring complaints.
When using the complaint information, keep in mind that complaints are not always justified; sometimes the customer is unreasonable. Also, be aware that some firms may be at greater risk than others of incurring complaints because of the specific types of business they do. And remember that the measure of business volume we use in calculating complaint rates (the number of full-time-equivalent employees who perform residential work) is at best a very rough indicator.
We always recommend that you look for substantial differences in complaint counts and rates. We also advise giving little weight to complaint counts if the total count against a firm is less than three or four.
Information reported on our Ratings Tables regarding areas served came directly from the firms' representatives. We called each firm to complete a survey over the phone and then followed up with a mailed verification form.
Prices for in-home cleaning services were quoted by the firms in response to telephone inquiries by our researchers (who did not reveal their affiliation with CHECKBOOK); we then mailed firms surveys that asked them to verify the prices we had obtained. Not all firms responded to our surveys asking for verification of prices. When describing the job to the firms, our researchers told them that the carpets were moderately soiled; prices for carpet that is more or less soiled may vary. When firms quoted only a cleaning price per square foot, we calculated the cost for cleaning a living room, dining room, and hall plus an additional room based on sample rooms (330 square feet for living room, dining room, and hall, and 130 square feet for an additional room); prices for rooms with different dimensions will vary. Prices assume firm moves furniture; some firms offer discounts if customers move their own furniture. Firms may use other cleaning methods not listed here. Some of the per-room prices and minimum charges were rounded to the nearest whole dollar.
Prices were quoted by the firms in response to telephone inquiries by our researchers (who did not reveal their affiliation with CHECKBOOK); we then mailed firms surveys that asked them to verify the prices we had obtained. Not all firms responded to our surveys asking for verification of prices. When describing the job to the firms, our researchers told them that the rug was moderately soiled; prices for rugs that are more or less soiled may vary. Some prices were rounded to the nearest whole dollar. Please note that cleaning methods vary in quality.
All of the data must be interpreted in view of timeliness. Our customer survey data are from surveys conducted from January 2003 to April 2011. Survey respondents were asked to report on experiences in the preceding year. Our data on complaints for the BBBs are for a three-year period dating back from a date in November or December 2009. The data from our survey of firms were collected from February to March 2010. Our price data were collected from October 2009 to March 2010.
For the most part, our tables include firms for which we collected 10 or more ratings on our customer survey during the customer survey period mentioned above, but we do not report data for periods prior to firms' changes of name and ownership. As a result, some large firms are not listed at all. If only name or ownership changed, we do report the data. Changes subsequent to the dates listed above may not be taken into account.
We give checkmarks to firms that score highest on a scoring system that we devise for each service field. Our scoring systems weight the various data in our tables and text based on our subjective judgment of their importance. Since the scores are based entirely on information presented, you can apply your own subjective judgments, and decide whether you prefer firms we have not given checkmarks. Where we do not have important data on a firm, we cannot give our checkmark.
|
Nonprofit & unbiased
