For the 20 plus years I've lived here we've dealt with almost instant hot water in the bathrooms and a long wait for hot water in the kitchen. The heater is at the same end of the house as the bathrooms. The dishwasher never gets hot water unless we run water in the kitchen sink before turning on the washer. Same goes for the clothes washer. Luckily we have a sink next to it. The kitchen and laundry are at the opposite end on the house from the heater. So for all these years we just keep running precious water down the drain.

I've heard many solutions, but I've not head from anyone who actually used any of these options. So here are the facts. All electric home. Open to adding natural gas. Open to most any option that won't drain my limited funds so low that I can't eat or afford to use the the two washers. I'm not a plumber, but I have installed faucets, toilets, garbage disposals and deep well pumps. I do love PVC over galvanized or copper - as far as simplicity of use.

A small 10 gallon under sink water heater would be my choice if the wiring can accommodate it. Many commercial kitchenettes in offices have small tanks under the sink.

Code does not allow the use of PVC for domestic water lines inside a home.

Grundfos "Comfort", Laing system will do what you want.

what you want is called a recirculation pump on your water heater and a hot water line that it connects to at the end of your house. Its function is to have hot water continually moving through the pipes back into the hot water heater. it will allow u to get instant hot water in every faucet you turn on betwwen the pump and the hot water pipe its connected to at the end of the home

Adding a Circ line will do that and it will also increase your Energy bill due to circulating hot water continuously. The better remedy would be the 10 gal heater installed on that end of the home.