How warm will my house get?

This is a function of your home’s heat losses versus the heating system’s output. The moment the heat output achieves the required demand, the home will be warm. Modern homes will have no problem heating above 20°C. Older homes generally do not experience any issues, especially if roof insulation and double glazing is present in the property. However, if you are concerned about this, the best thing to do is get a heat loss report done on the property to see how much energy you need to put into the rooms to heat them comfortably. The JK® system is fully tested and heat performance reports are available.