Great! Pump itself was installed 4 years ago, but Reliable was willing to come back to install the check valve. They have done many other jobs for me -- from A/C working, to plumbing, to servicing the furnace, etc. -- and they truly live up to their name. If you call them on an "off" time -- weekend, late-night, even a holiday -- you will reach a live person at their answering service. Your call really will be returned within 24 hours. And they will arrange to come to you ASAP. They are all about customer service and loyalty. You might start out using them in a pinch because they are available 24/7, but you will probably continue to use their service forever.