I have used this product for over 5 years i use 3 sets for an 16 x 32 oval above ground it allows me to have the pool open from May to Mid September comfortably we live on northern Vancouver Island Canada, Only problem is one of the connecting hoses worked lose in the winter but was easy to fix. It does increase filter back pressure by about 5 #s but i am pumping the water up 22 ft to my roof.

Cant seem to get good water flow into the pool through heater. Im not sure what to do. I am disappointed

I have noted a few things, first I have a 15 foot round, sand filter with a 1hp pump. I don't like getting blind sided with problems, especially when I put out a lot of money for a sound proven low tech product. During the install I noticed the threaded fittings were very sloppy and the barb is just shy of the national standard. Be prepared to use a lot of plumbers tape and I mean a lot. When running water through it I noticed a considerable flow drop off and a 7lb increase in back pressure (10psi to 17psi). The leaf basket on the pump will not completely fill with water and the skimmer weir will not fall back far enough to let floaters in. I had to add a modified bypass with 2 barbed Tees and a ball valve as an adjustable restrictor to increase the flow rate and reduce the back pressure. The "ByPass Kit for Solar PRO Heaters XD1 or XD3 & Curve" may work but for $80 I do not have faith due to the lack of fine tuning and the tear down to find the right restriction. This was another $30.00 add on. The bypasses being offered for extra will not accomplish this task. Now for the heater itself, it gets hot, which is the whole point. I should be able to hit close to 37 deg C with Windsor ON weather. My review may seem negative but its not. I'm giving a 5 out of 5 for heat production and aesthetics, a 4 out of 5 only for the sloppy threads and a 3 out of 5 for the flow/pressure problems. Independents have rated this type of heater a 7 out of 10 going up against the roof top monsters so in my opinion it is worth the investment.

Works awesome!!