Patent ID: 8229704

Claim:
A method for measuring efficiency improvement in a heating system, said method comprising the steps of: sensing an outflow temperature using a temperature sensor, mounted on a heat outflow of said heating system; recording said temperature and a call time at a thermostat burner call; using a processor to calculate the following relationships: calculating a percentage of a reduction of fuel consumption, that the efficiency improvement saves; and displaying the percentage saved on a readout; where the calculating is by the following formula: % Savings=( RTn−RTx )/ RTn Where: RTn=(K/(T 0 +T 3 ))*(T 3 ) RTx=(K/(T 0 +T 1 +T 2 +T 3 ))*(T 2 +T 3 −PP) RTn=Extrapolated total burner run-time for the pseudo original burner cycle RTx=Extrapolated total burner run-time for the actual burner cycle K=constant used to normalize the data+3600 PP=pre-purge time T 0 is time from burner shutdown to Thermostat call, T 1 is Intellicon-induced delay of boiler firing time T 2 is time from post delay unit call to the Recorded temperature at a thermostsat burner call T 3 is the period during a burner run from the Recorded temperature to burner shut-off.