Systems and methods for predicting HVAC filter change

Patent metadata

Field	Value
Publication number	US-11529580-B2
Application number	US-202117538707-A
Country	US
Kind code	B2
Filing date	Nov 30, 2021
Priority date	Dec 1, 2014
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

Computer-implemented systems and methods for estimating a replacement status of an HVAC air filter. Outdoor weather data (e.g., outdoor temperature information), is obtained. A Total Runtime Value of the HVAC system is determined based upon the obtained outdoor weather data. Finally, a replacement status of the air filter is estimated as a function of a comparison of the Total Runtime Value with a Baseline Value. By correlating air filter replacement status with an estimated runtime of the HVAC system, a credible predictor of air filter usage is provided. By estimating fan runtime based on easily-obtained outdoor weather data, the methods are readily implemented with any existing HVAC system and do not require installation of sensors or other mechanical or electrical components to the HVAC system.

First claim

What is claimed is:

1. A computer-implemented method for estimating a replacement status of an air filter in a heating, ventilation, and air conditioning (HVAC) system, the computer-implemented method executed by one or more processors of one or more computing devices, and comprising the steps of:
obtaining outdoor weather data for an outdoor environment related to the HVAC system, wherein the outdoor weather data includes at least information indicative of a pollution-related parameter at the outdoor environment of a dwelling that comprises the HVAC system;
determining a Total Runtime Value of a fan of the HVAC system based at least in part upon the obtained outdoor weather data; and
estimating the replacement status of the air filter as a function of a comparison of the Total Runtime Value with a Baseline Value, and delivering a notification of the replacement status of the air filter to a user.

2. The computer-implemented method of claim 1 , wherein the step of obtaining the outdoor weather data includes electronically accessing an online data service.

3. The computer-implemented method of claim 2 , wherein the step of obtaining the outdoor weather data further includes retrieving the outdoor weather data from the online data service.

4. The computer-implemented method of claim 2 , wherein the online data service provides the outdoor weather data for a plurality of locales, and wherein the step of obtaining outdoor weather data further includes:
identifying one of the plurality of locales as corresponding with a locale of the HVAC system.

5. The computer-implemented method of claim 4 , wherein the step of identifying includes:
comparing a zip code of the HVAC system with a zip code associated with each of the plurality of locales.

6. The computer-implemented method of claim 1 , wherein the information indicative of the pollution-related parameter at the outdoor environment of the dwelling that comprises the HVAC system comprises an airborne particulate level.

7. The computer-implemented method of claim 1 , wherein the information indicative of the pollution-related parameter at the outdoor environment of the dwelling that comprises the HVAC system comprises a level of airborne fine particles having a diameter of 2.5 μm or less (PM 2.5 ).

8. The computer-implemented method of claim 1 , wherein the information indicative of the pollution-related parameter at the outdoor environment of the dwelling that comprises the HVAC system comprises a pollen count.

9. The computer-implemented method of claim 1 , wherein the dwelling that comprises the HVAC system is a single-family residence, and wherein the HVAC system is a residential, on-demand HVAC system.

10. The computer-implemented method of claim 1 , wherein the step of obtaining outdoor weather data further includes obtaining weather information indicative of at least a second weather parameter at the outdoor environment of the dwelling that comprises the HVAC system, apart from the information indicative of the pollution-related parameter at the outdoor environment of the dwelling that comprises the HVAC system.

11. The computer-implemented method of claim 1 , further comprising:
determining the Baseline Value as a function of a user preference-related parameter selected from a group consisting of air quality interest level, target number of annual filter changes, fan operation, and window usage.

12. The computer-implemented method of claim 1 , wherein the step of obtaining the outdoor weather data is characterized by an absence of directly connecting to a sensor of the HVAC system.

13. A computer-implemented system for estimating a replacement status of an air filter in a heating, ventilation, and air conditioning (HVAC) system, comprising:
one or more processors of one or more computing devices configured to:
obtain outdoor weather data for an outdoor environment related to the HVAC system, wherein the outdoor weather data includes at least information indicative of a pollution-related parameter at the outdoor environment of a dwelling that comprises the HVAC system;
determine a Total Runtime Value of a fan of the HVAC system based at least in part upon the obtained outdoor weather data; and
estimate the replacement status of the air filter as a function of a comparison of the Total Runtime Value with a Baseline Value, and deliver a notification of the replacement status of the air filter to a user.

14. The computer-implemented system of claim 13 , wherein the one or more processors are further configured to electronically access an online data service to obtain the outdoor weather data.

15. The computer-implemented system of claim 13 , wherein the information indicative of the pollution-related parameter at the outdoor environment of the dwelling that comprises the HVAC system comprises an airborne particulate level.

16. The computer-implemented system of claim 13 , wherein the information indicative of the pollution-related parameter at the outdoor environment of the dwelling that comprises the HVAC system comprises a level of airborne fine particles having a diameter of 2.5 μm or less (PM 2.5 ).

17. The computer-implemented system of claim 13 , wherein the information indicative of the pollution-related parameter at the outdoor environment of the dwelling that comprises the HVAC system comprises a pollen count.

18. A computer-implemented method for estimating a replacement status of an air filter in a heating, ventilation, and air conditioning (HVAC) system, the computer-implemented method executed by one or more processors of one or more computing devices, and comprising the steps of:
determining a Total Runtime Value of a fan of the HVAC system;
estimating the replacement status of the air filter as a function of a comparison of the Total Runtime Value with a Baseline Value;
and,
delivering a notification of the replacement status of the air filter to a user,
wherein the Baseline Value is determined as a function of a pollution-related parameter at the outdoor environment of a dwelling that comprises the HVAC system.

19. The computer-implemented method of claim 18 , wherein the pollution-related parameter at the outdoor environment of the dwelling that comprises the HVAC system comprises an airborne particulate level.

20. A computer-implemented system for estimating a replacement status of an air filter in a heating, ventilation, and air conditioning (HVAC) system, comprising:
one or more processors of one or more computing devices configured to:
determine a Total Runtime Value of a fan of the HVAC system based at least in part upon obtained data;
estimate the replacement status of the air filter as a function of a comparison of the Total Runtime Value with a Baseline Value; and
deliver a notification of the replacement status of the air filter to a user,
wherein the Baseline Value is determined as a function of a pollution-related parameter at the outdoor environment of a dwelling that comprises the HVAC system.

21. The computer-implemented system of claim 20 , wherein the pollution-related parameter at the outdoor environment of the dwelling that comprises the HVAC system comprises an airborne particulate level.

Assignees

• 3M Innovative Properties Company

Inventors

• Fox Andrew R
• Lobner Eric C
• Meyer Theresa M
• Stankiewicz Brian J

Classifications

• F24F11/30

  for purposes related to the operation of the system, e.g. for safety or monitoring · CPC title

• F24F11/63

  Electronic processing · CPC title

• F24F11/39

  Monitoring filter performance · CPC title

• B01D2279/50

  for air conditioning · CPC title

• F24F2130/10

  Weather information or forecasts · CPC title