SMART THERMOSTATS INCREASE YOUR I.Q.

Transcription

1 SMART THERMOSTATS INCREASE YOUR I.Q. Friday, March 3rd Presenters: Karl Hilker and Doug Dettlaff Focus on Energy - Home Performance with ENERGY STAR Program PRESENTATION OVERVIEW Evolving markets Opportunity overview Technology overview Smart thermostat definition Energy saving potential Installing smart thermostats Ideal vs. less desirable applications Hands-on demonstration Utility programs in the Midwest Q&A 2 EVOLVING MARKETPLACE 3 1

2 EVOLVING MARKETPLACE SMART PHONES 4 OPPORTUNITY OVERVIEW Evolving marketplaces and technologies offer greater solutions for consumers and businesses 5 OPPORTUNITY OVERVIEW 6 2

3 IN OTHER WORDS American Thermostat Breakdown 140 Millions of Households Smart Thermostat All Others 7 TECHNOLOGY OVERVIEW Types of thermostats Manual thermostats Programmable thermostats Wi-Fi programmable thermostats Smart thermostats 8 9 3

4 MANUAL THERMOSTATS History Lesson 1620 to mid 1880s A number of inventors create or improve thermostats for commercial use 1183 Electric room thermostat patented by Warren S Johnson (company would evolve into Johnson Controls) 1886 Albert Butz invents the "damper flapper to automatically stoke the fire in a furnace, by opening a flap to let in air, when the room cooled (company would evolve into Honeywell) Designed in 1941, Honeywell (Minneapolis-Honeywell Regulator Co) introduces the T-86 Round Late-1980s The Americans with Disabilities Act and a move away from moving parts creates the digital thermostat 10 MANUAL THERMOSTATS Features Mechanical or electric measurement of temperature A temperature drop closes a switch creating a call for heat When temperature is satisfied the switch opens ending the call If you want to change the temperature you move the dial or press a button every time you want to make a change 11 PROGRAMMABLE THERMOSTATS History Lesson First residential setback thermostat, the Electric Heat Regulator Co (Company would evolve into Honeywell) introduced. Marketed as the Jewell, the homeowner set the thermostat back at night and the clock in the thermostat set the temperature in the morning Honeywell adds a second clock to allow the thermoset to change the temperature at night and in the morning California, under the new Building Energy Efficiency Standards, requires a setback thermostat in new construction Late-1980s the Americans with Disabilities Act and a move away from moving parts creates the digital thermostat 1986 Honeywell Chronotherm III the feature set for a digital programmable thermostat 12 4

5 PROGRAMMABLE THERMOSTATS Features Mechanical or electric measurement of temperature A temperature drop closes a switch creating a call for heat When temperature is satisfied the switch opens ending the call Timer changes the set point at specific times If you want to change the temperature you move the dial or press a button. That temperature is held until the next event. Then it automatically goes back to the programmed temperature unless you use the permanent hold. 13 WI-FI OR CONNECTED THERMOSTATS History Lessons 1975 X10 technology allows devices to be controlled by an automation system or remotely by phone 1980s - commercial automation goes residential 2000s Wireless-N brings wireless mainstream 2010s The interconnectedness of things 14 WI-FI OR CONNECTED THERMOSTATS Features Mechanical or Electric measurement of temperature A temperature drop closes a switch creating a call for heat When temperature is satisfied the switch opens ending the call Timer changes the set point at specific times If you want to change the temperature you move the dial, press a button or remote access through smart phone or computer. That temperature is held until the next event. Then it automatically goes back to the programmed temperature unless you use the permanent hold. 15 5

6 SMART THERMOSTATS Features 2009 Smart Thermostat named one of the 50 best inventions of 2009 by Time Magazine 2009 Ecobee Smart released 2011 Nest releases first generation 16 SMART THERMOSTATS Features Mechanical or Electric measurement of temperature A temperature drop closes a switch creating a call for heat When temperature is satisfied the switch opens ending the call Timer changes the set point at specific times If you want to change the temperature you move the dial or press a button. That temperature is held until the next event. Then it automatically goes back to the programmed temperature. Remote access through smart phone or computer Thermostat uses information from other sources to maximize comfort and minimize energy use 17 SIGNIFICANT ENERGY SAVINGS POTENTIAL How do smart thermostats save energy? 18 6

7 SIGNIFICANT ENERGY SAVINGS POTENTIAL How much energy do they actually save? 19 SIGNIFICANT ENERGY SAVINGS POTENTIAL Case Studies 20 SMART THERMOSTATS.INCREASE YOUR IQ Savings potential How do Smart Thermostats save energy How much energy do they save Case Studies 21 7

8 SMART THERMOSTATS DEFINITION Two different definitions: Manufacturer definition Utility company definition 22 SMART THERMOSTATS DEFINITION Two different definitions: Manufacturer definition Utility company definition The fact is: Every smart thermostat is a Wi-Fi thermostat but not every Wi-Fi thermostat is a smart thermostat 23 WHAT ARE SMART THERMOSTATS? Smart thermostats can have: Wi-Fi connection to the internet Occupancy determination Proprietary control over equipment 8

9 SMART THERMOSTATS INCREASE YOUR I.Q. What are Wi-Fi thermostats? WHAT ARE WI-FI THERMOSTATS? Just like a standard thermostat Traditional thermostat terminals have On or off heating and cooling calls Traditional fuzzy logic for determining when to come on Run time history, indoor temperature, desired temperature and some magic algorithm to decide when to turn on 26 WHAT ARE WI-FI THERMOSTATS? What makes them different? 27 9

10 WHAT ARE WI-FI THERMOSTATS? Ability to: Remotely change the desired temperature Use weather data to tweak run times and off times 28 WHAT ARE WI-FI THERMOSTATS? Usually universal Single stage heat/cool Multi-stage heat/cool Single stage heat pump Multi-stage heat pump 29 WHAT ARE WI-FI THERMOSTATS? Power requirements Wi-Fi thermostats need power to run display, Wi-Fi connection, make heating and cooling call Power stealing. No common wire required. May have some issue with phantom calls or intermittent operation Battery. No common wire. Batteries need to be replaced 24VAC. Requires common wire. Pull new wires or use an add-a-wire or 3 to 4 wire adapter 30 10

11 WHAT ARE WI-FI THERMOSTATS? Wiring Auto identify connected wires Selecting wired terminals Equipment type Heat/cool Heat call, thermostat turns on fan (electric) Heat call, equipment turns on Fan (gas) Heat pump Heat pump, leave on compressor during auxiliary heat (electric) Heat pump, turn off compressor during auxiliary heat (gas) 31 WHAT ARE WI-FI THERMOSTATS? What happens when the gas/electric switch is on? Testing Electric furnace Heat pump 32 WHAT ARE WI-FI THERMOSTATS? Rh: Power to the heating circuit Rc: Power to the cooling circuit C: Common wire W1: First stage heating (heat/cool) OR auxiliary heat (heat pump) W2: First stage heating (heat/cool) OR emergency heat (heat pump) Y1: First stage cooling (heat/cool) OR first stage heat and cool (heat pump) Y2: Second stage cooling (heat/cool) OR first stage heat and cool (heat pump) O: Cooling mode (heat pump) B: Heating mode (heat pump) 33 11

12 WHAT ARE WI-FI THERMOSTATS? Testing equipment Up down on touchscreen or turn of the dial Minimum off times 2 minutes heat and 4 minutes compressor 34 WHAT ARE WI-FI THERMOSTATS? Common Types Honeywell Wi-Fi/Smart Honeywell Prestige Emerson Sensi Schneider Electric SMART THERMOSTATS INCREASE YOUR I.Q. What are smart thermostats? 12

13 WHAT ARE SMART THERMOSTATS? The connected home. Thermostat determines occupancy to maximize comfort and savings. WHAT ARE SMART THERMOSTATS? Occupancy sensing Comfort settings when you are home Energy savings when you are gone Works when your program doesn t OCCUPANCY THERMOSTATS Occupancy thermostats Common types Nest Honeywell Lyric Ecobee 3 13

14 BRANDS OF OCCUPANCY THERMOSTATS Nest Pros Very popular Onboard sensor for occupancy Forces homeowner to interact Learns comfort set points Learns schedule Auto identify wire connections Utility messages Opt-in to more aggressive setbacks Peak load restriction Suggestions for improving efficiency Connection to other household devices 40 BRANDS OF OCCUPANCY THERMOSTATS Nest Cons Single sensor - may be in poor location Some uncertainty in what the thermostat is using for set points Room/set point temperatures seem reversed 41 BRANDS OF OCCUPANCY THERMOSTATS Ecobee 3 Pros Onboard sensor and optional remote sensor Suggestions for more aggressive setbacks Simple thermostat interface Application and website are very good 42 14

15 BRANDS OF OCCUPANCY THERMOSTATS Ecobee 3 Cons Unsettlingly long time to calibrate Program with times and temperatures and an unoccupied temperature Need common wire 43 BRANDS OF OCCUPANCY THERMOSTATS Lyric or T Series Pros Dealer choice Honeywell. You know it will make heating and cooling calls Uses geolocation (proximity of cell phone) to determine when to come out of setback 44 BRANDS OF OCCUPANCY THERMOSTATS Lyric Cons No web application, smart phone only Smart phone running application needed to set up / change settings Interaction at the thermostat is limited 45 15

16 WHAT ARE SMART THERMOSTATS? Precise control of equipment Minute adjustments to refrigerant or airflow Integrated control of accessories Humidification Dehumidification Filtration UV Ventilation Dealer alerts Records issues or alerts dealer of issues WHAT ARE OEM THERMOSTATS? Proprietary equipment between thermostat and equipment Can t jump terminals Can t measure voltage Communication (+/- 10VDC) not a call WHAT ARE OEM THERMOSTATS? Common OEM thermostats Carrier Infinity Lennox icomfort Trane ComfortLink York Affinity 16

17 THERMOSTAT TYPE - SAVINGS POTENTIAL Programmable thermostats 8% on heating Wi-Fi thermostats 10% on heating Smart thermostats (occupancy) 13% on heating Cooling savings is a little higher in all categories OEM thermostats Only way to get the 98% AFUE and 25 SEER rating from equipment IDEAL VS. LESS DESIRABLE APPLICATIONS Where Wi-Fi and occupancy thermostats work well Home has wireless Not necessarily computer savvy but computer friendly Homes with a poorly defined schedule. A busy house. Applications Where Wi-Fi and Occupancy thermostats don t work well No wireless/pay for the volume of wireless Home all day or a solid routine Vacation home (wireless?) No computer or smart phone High end OEM Equipment 17

18 IDEAL VS. LESS DESIRABLE APPLICATIONS Where Wi-Fi and occupancy thermostats DON T work well No wireless/pay for the volume of wireless Home all day or a solid routine Vacation home (wireless?) No computer or smart phone High end OEM equipment HANDS-ON DEMONSTRATION Ecobee3 App MIDWEST UTILITY COMPANY PROGRAM OFFERINGS Wisconsin Focus on Energy Incentive amount: $75 - $125 Qualified product list available at focusonenergy.com/smart Illinois ComEd Incentive amount: Up to $100 hermostatrebates.aspx Minnesota Xcel Energy Program currently on hold

19 Q&A How does the lack of a common wire affect installation? Q&A Does the use of a Non-OEM thermostat void the manufacturer furnace / boiler warranty Q&A Do the occupancy sensors detect pets and does that impact the set back features of the thermostats 19

20 Q&A Do Smart Thermostats work in homes with zoning systems? Q&A - Are there any internet safety considerations associated with the use of Smart Thermostats Q&A Are there issues associated with the wireless connection requirements 20

21 Q&A Do the manufacturers offer tech support Q&A What happens if a manufacturer releases an updated version of a Smart Thermostat Q&A Are Energy savings reports available 21

22 Q&A What are the manufacturer warranties on Smart Thermostats Q&A How does the Nest Thermostat determine the thermostat schedule SMART THERMOSTATS INCREASE YOUR I.Q. Summary Market is evolving Significant opportunity for growth and savings Choose carefully Installation comparable to other thermostats Not suitable for every household Energy savings Availability of utility sponsored rebates 22

23 SMART THERMOSTATS INCREASE YOUR I.Q. Has your smart thermostat I.Q. increased? CONTACT INFORMATION Karl Hilker / Doug Dettlaff Home Performance with ENERGY STAR Program focusonenergy.com/myhome (website) HomePerformance@focusonenergy.com ( ) (phone) 23