He gave me a lot of information over the phone about this product and others on the market with the pros and cons.
He arrived at the house and explained the work and gave us an estimate. We decided to have the work done and an appointment was set up.
He arrived promptly, did the work in the estimated amount of time and then explained the system.
The only part I did not really like was that now if our regular pump fails, we probably would not be able to replace it ourselves, because the two pumps are combined. However, as we get older, we might not be able to do this type of work in the future, anyhow. At least we have the back up pump if ours does fail and we would have some time to deal with getting a new one installed.