Apparatus and method for detecting degradation in climate control system performance

Apparatus for detecting degradation in the performance of a climate control system indicative of failure in the climate control system, comprising:

• a climate control signal input for receiving a climate control signal output by a controller to control a climate control system in a property, the control signal indicative of the climate control system being turned on and turned off;
• an energy consumption input for receiving an energy consumption signal indicative of an overall energy consumption of the property, including energy consumption by a plurality of loads at the property including the climate control system;
• a correlator to time-correlate the climate control signal and energy consumption signal to determine an energy consumption signature of the climate control system when being turned on or turned off, wherein the correlator is arranged to determine the energy consumption signature of the climate control system by determining, based on the climate control signal, when the climate control system is being turned on or off, and measuring the energy consumption signal during turn on or turn off of the climate control system, to produce the energy consumption signature, the energy consumption signature indicating changes in the overall energy consumption at the property during turn-on or turn-off of the climate control system;
• and
• a detector to detect differences in the determined energy consumption signature indicative of a degradation of climate control system performance by comparing the energy consumption signature determined during turn on or turn off of the climate control system with previously measured energy consumption signatures, to thereby allow maintenance to prevent failure of said climate control system;
• wherein the energy consumption signature is a complex signature comprising a plurality of loads, and wherein the detector is configured to detect differences by detecting disappearance of a given part of the complex signature.

A method for detecting degradation in the performance of a heating system indicative of failure in the heating system, comprising:

• receiving a heating system control signal output by a controller to control a heating system in a location, the control signal indicative of the heating system being turned on and turned off;
• receiving an energy consumption signal indicative of the overall energy consumption of the location, including energy consumption by a plurality of loads at the location including the heating system;
• time-correlating the received energy consumption signal with the received heating system control signal to determine an energy consumption signature of the heating system when being turned on and turned off, wherein the time-correlating step comprises determining the energy consumption signature of the heating system by determining, based on the climate control signal, when the heating system is being turned on or off, and measuring the energy consumption signal during turn on or turn off of the heating system, to produce the energy consumption signature, the energy consumption signature indicating changes in the overall energy consumption at the location during turn-on or turn-off of the heating system;
• and
• comparing the energy consumption signature determined during turn on or turn off of the heating system with previously measured energy consumption signatures to detect differences in the determined signature that are indicative of degradation of heating system performance indicative of impending heating system failure, to thereby allow maintenance to prevent failure of said heating system;
• wherein the energy consumption signature is a complex signature comprising a plurality of loads, and wherein the step of comparing the energy consumption signature with previously measured energy consumption signatures to detect differences comprises detecting disappearance of a given part of the complex signature.