Narrow the field
Start with fuel supply and installation space
The fuel or electrical supply available and the space where the heater will sit rule some options in and others out before features enter the discussion. Note the current fuel type and describe the location, including how easy it is to reach.
Hot water demand is the third factor. Explain which showers and appliances run together and whether the current heater has kept up. Trident uses those details to shortlist the systems that suit the home.
