Technical and basic information on Outdoor Pools, Indoor Pools, Pool Covers, Solar Pool Heating, High Efficient Gas Pool Heaters and Heat Pump Pool Heaters: RSPEC Fact Sheets
Conserving Energy and Heating Your Pool (EPA PDF)
Solar Pools Installation Tips:
FSEC Pool installation.
Professional Pool and SPA associations can help you find pool service professionals and pool builders in your region:
USA: APSP (The Association of Pool and SPA Professionals).
UK: BSPF (British Swimming Pool Federation)
UE: EUSA (European Union of Swimming Pool and SPA Association)
Australia: SPASA (Swimming Pool & SPA Association)
For listings of manufacturers and approved solar systems and collectors for solar pool heating:
Pool cover manufacturers