The Pool Heating Depot has the largest inventory of solar pool heating equipment and pool heat pumps in North America. We have been in the pool heating business for 38 years and have the experience and expertise to assist you in all your pool heating needs. We have an online sizing guide for solar pool heaters that will help you determine what type system is right for your particular needs. There are many types of solar pool heating systems offered on the internet that are very inexpensive but are of very poor quality and do little to heat a pool.