Use the Google keyword tool and type in the name of your product or service. For example, if you are a plumber, type in "Plumber". Google will then list all of the words (aka keywords) that people type in to find a service like yours. You might see common variations like "Plumbing Expert", "Plumber Services" or "Pipe Plumber".
Before you decide on any company it is important to take a look on the web to read customer reviews. There are certain websites that specialize in allowing consumers to post and then share such reviews with other consumers. No company will have all great reviews but you should only seriously consider the ones that the most amount of former customers are satisfied with.
Certified. Just like any other professional, a plumber comes with a certification. Make sure that you hire someone that is fully certified as a water heater specialist. Never assume that all plumbing companies that offer these types of services come with a certification. Do your research.
Can you imagine the uproar there would have been if all the Trustworthy plumber around the world stuffed up and drains blocked up everywhere? Well, isn't that very similar to what has happened to our financial sector?
Third, if you dissemble things, do you know how to put it back and not cause further damage? This is something that commonly happens. Some people attempt to fix the problem and end up causing a lot more damage! Then they try to do something else, which causes even more problems and by the time they call the Local plumber, the problem is much worse and now, they not only have to pay for the service but may even to pay a higher amount for the double repair.
It is fine to ask the qualifications of a plumber. Check out if their paperwork is authentic. If you find anything fishy, call the MPA. Various plumbers are registered with Master Plumbers Association.
Most importantly, make sure that you set your foot in a reliable and trustworthy store which also offers great discounts or sales for you to be able to save.