Good plumbers are going to have a valid license that you can check on. Look up the number they give you online and see trustworthy drain leak repair if it is valid and if any complaints have been filed against that number. This will tell you if they are at least good and have not done anyone anything wrong. Some of the best plumbers are going to know and understand the local building codes and will be able to explain to you what is needed for the job to be in code.
However, there are huge distinctions between different fiberglass pools. (They are not all created equal.) Vinyl Ester resin is a must! This material is a bonding agent that helps hold the pool together. Vinyl Ester also prevents cobalting, which is a black or purple stain that forms from the outside in. It is a chemical reaction within the fiberglass itself. The stain can usually be removed but will continue to resurface. Make sure you see it in writing that the pool has Vinyl Ester. If it's not advertised in print, chances are it doesn't have it.
It is always a good idea to do some online research. For example, if you have a clogged drain and you live in the Atlanta area you should search for "Atlanta plumbers" or "Atlanta drain local water heater repair service". This will bring up a list of Atlanta plumbers rather than plumbers from across the country.
So I started calling plumbers. And there was one name that immediately came to mind: Godot (not his real name). I have lived here in Gilford for eight years and have seen his advertisements at least daily ever since I moved in. His ads are in the local papers, on the local internet sites, he's got an expensive full page ad in several telephone directories, I believe I even received a personal direct mail piece from him when I bought my home.
Whether you decide to DI.Y repair or take the easy and safe way out and call in your local fast plumber, get familiar with the plumbing basics on unclogging and clearing drains. The bottom section of the drainpipe is called a trap that functions to "trap" some water in the line and create a water seal preventing offensive sewer gases from penetrating the home. Bathroom drains of showers, tubs and sinks may become blocked due to a build up of hair, soap scum and bodily oils and fats.
Many people do run away from getting good and reliable air filters on the premise that it's quite costly. However, the cost of acquiring a device like this to help you get rid of dust, smoke, odor and so on is far less than the cost incurred in maintaining a clean environment in the home. Also, if you're properly informed, you won't have to break into a bank before getting a good and reliable air filter.
The bottom line is: You and your plumber need to decide if you truly have an emergency plumbing problem. If the problem is serious and you really can't delay getting it fixed, then by all means have the work done as quickly as possible. It will probably be cheaper in the long run to delay repair on a plumbing problem that is "livable" for the time being. You will need to weigh your options and discuss them with your plumber after he has evaluated your unique situation.