They are selling what works for them. Each company has a favorite pump or filter heater etc that is user and installer friendly. Some get special deals on equipment that is low grade.
Check the site IPSSA.com or IPSSA inc. and follow the prompts. You will get some straight answers there. But again, 10 pool service techs --- maybe 5 to 8 different answers. Go with someone who has been in the business a while. Have your questions prepared in advance. Tell them what you would like in your pool design or what your possible use would be. Ask why this particular piece of equipment or that. The person has to get a background of what your needs are in relation to the pool use. Location of the pool and other factors can be involved. Budget restraints are a factor. The end results are nearly limitless.
The best place to seek advice for a cell phone manufactured by a specific company would be to contact the company itself either by phone or emial. Another great place to seek advice is from people who have already owned this type of cell phone. A site like www.letstalk.com is a great place to seek such advice.
form_title=Professional Indemnity Insurance form_header=If your company gives advice or provides services at a professional level then you need professional indemnity insurance. Protect your company today. What is your profession?=_ How long have you been in business?=_ Does your company give out professional advice?= () Yes () No Has your company ever been a party to a lawsuit?= () Yes () No
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