The pump has a one year warranty from date of purchase.
The Haymaker solution is 3 times as effective on scale as vinegar, and has no foul odor.    
Yes.  Use Cryo-Tek 100AL antifreeze for boilers with aluminum heat exchangers. Sludgehammer Universal Corrosion Inhibitor and Sludgehammer System Restorer & Noise Reducer is compatible with all metal heat exchangers, including aluminum.
Each strip has two pads.  One pad measures the level of propylene glycol, the other measures the level of corrosion inhibitor.  These levels should be checked as part of routine boiler maintenance.  
Virgin propylene glycol has never been used previously.  Some boiler manufacturers state in their warranties that antifreeze made with virgin propylene glycol is required or the warranty is voided.   Recycled propylene glycol is captured and cleaned after use (mainly for de-icing aircraft). It is then considered a lower grade of propylene glycol and may still contain other ingredients even after cleaning.   Hercules Cryo-Tek antifreeze is made only with virgin propylene glycol.
This is a patented formulation that is combined with virgin propylene glycol to: Prevent corrosion Prevent scale Maintain proper pH levels
You should contact your local fire department or building department to find out the protocol is for the disposal of hazardous materials. 
No. This is a very harsh acid based product. If left on surfaces even when mixed in with standing water, an etching process will take place and permanently damage the finished surface of the fixture.
While the active ingredients are very similar, there are subtle differences that make them better suited for each applications.   For example:  Liquid Glug for the Kitchen uses a deodorizer designed to eliminate the smell of leftover food in the DWV system.
Spills/Leak Control: Spill area should be isolated to avoid possible exposure, and remove all ignition sources.  For small spills; neutralize with soda ash or lime, then absorb with sand, clay or diatomaceous earth.  Dike large spills; collect into an acid resistant container if possible otherwise cautiously dilute and neutralize with soda ash or lime, then collect or sweep neutralized material into an acid safe container for proper disposal.  Wash the area with large amount of water.