I have been doing some research on the reliability of various makes of sump pumps and it appear Zoeller and Hydromatic are the most reliable with the exception of switch issues for the Zoeller.

Actually, I have a Zoeller M57 installed (does not have the variable level float) but due to the high water table this season the sump in the basement is now running approximately every 5 minutes. This is due to the float switch with a small on and off distance of only 4.5 inches. Actually what I need now is about 12 inches of water between cycles to increase the cycle to every 15 minutes to increase the switch life. The M57 is rated for 100,000 cycles and by the rate of the cycling on and off I suspect I'm due for a pump within the next while.

I'm looking at the smaller M49 Water Ridd'r III which is 1/4 hp from the current 1/3 hp which has the tethered float switch but this only provides 7 inches between cycles or the BN53 with the piggyback variable float switch.

The other sump pump I'm considering is the Hydromatic W-A1 with the Wide angle float switch.

So I guess I have three questions. Can I modify the M57 I have currently installed with a piggyback variable float switch? And the second question is should I stay with Zoeller or go with the Hydromatic for the replacement if I can't modify the Zoeller M57 I'm currently using? Where can I purchase these products in Canada?

Thanks a bunch for any and all information.