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Connecticut Ductless Heat Pump Retrofit Initiative

Connecticut Ductless Heat Pump Retrofit Initiative. Agenda. About Ductless Heat Pumps (DHPs) Energy Efficiency Customer Education Rebate Offering Q & A. Connecticut has the highest electric rates in the Continental United States

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Connecticut Ductless Heat Pump Retrofit Initiative

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  1. Connecticut Ductless Heat PumpRetrofit Initiative

  2. Agenda • About Ductless Heat Pumps (DHPs) • Energy Efficiency • Customer Education • Rebate Offering • Q & A

  3. Connecticut has the highest electric rates in the Continental United States There are approximately 100,000 customers with electric heat in Connecticut Ductless heat pumps are a cost effective, reliable solution for many (not all) of those customers To ensure our customers are served by exemplary contractors; failure to do so may jeopardize the program To become a certified Connecticut Energy Efficiency Fund DHP Installer To learn about the new $1,000 DHP offering To stay in the forefront of energy efficiency technologies DPUC mandate Why we are here today

  4. Ductless Heat Pumps • “Zonal” or “Ductless Split” or “Mini Split” or “DSHP” • Developed 30 years ago in Japan • Now made by numerous, well-known manufacturers • Sold worldwide in the millions • Quiet, ultra efficient, reliable • Provide zonal control and superior comfort • Provide “real” air conditioning and IAQ benefits • Straight forward and quick to install (no ducts) • Opportunity to displace electric resistance heat and offer super high efficiency AC

  5. Ductless Heat Pumps • High-efficiency heating and cooling (12+ HSPF, 25+ SEER) • Inverter technology increases efficiency • No ducts therefore no duct losses • Very quiet • “New” to the residential market • Can offer superior cold weather performance • Installed cost is $3,000 & up depending on size, zones, electric requirements, etc.

  6. Maybe our forefathers had it right? Ductless heat pumps are not a new concept. Zonal heating systems have been around for thousands of years.

  7. Same Principles

  8. Ducts are an expensive upgrade that sometimes do not work as advertised

  9. The Octopus

  10. Inverter Technology On Mid Off Inverter technology (blue wavy line) will dial itself into the optimal speed needed Much like an automobile, constant speed operation of heat pumps is more efficient than “stop and go” operation. As a result of the inverter technology, DHPs are typically 10% to 30% more efficient than standard heat pumps. Much like an automobile, however, driving too slow is not efficient.

  11. Bin Hour AnalysisHeat pumps can work in cold weather

  12. Good Cold Weather Performance

  13. Ductless Heat Pumps • Heat Pumps can work in cold weather • 100% of the heat load (within a zone) is covered at above 30ºF outdoor temperature; Actual results vary! • The heat pump provides part of the heating the rest of the time • Electric resistance may be needed (below 30ºF outdoor) • Only about ¼ of the heating hours per year; varies and can be controlled • Newer generation pumps have improved and offer 100% output at temperatures closer to 5ºF and over 50% capacity at temperature well below zero • Important: Customers must understand the interaction between the heat pump and existing electric resistance and “manage their zones” • set heat pump thermostat higher than electric resistance or turn off electric resistance • Generally work best in open floor plans. Zoning (through more air handlers) is possible but provides less incremental savings per dollar. Multi-zone systems are not a desirable utility measure. • Large scale multi-family opportunities and 1970’s “Gold Medallion” Homes

  14. Approximately 80% of the heating consumption takes place at 20 degrees or greater • Even if your heat pump does NO work at 20 (but it will), you can still displace 80% of the electric resistance heat • Newer units however offer superior cold weather performance well below zero • DHPs are currently being installed near Glacier National Park in Montana

  15. Cost Effective Energy Savings • Install in homes using electric resistance heat • Install one “one-to-one” unit in most situations • Let existing system serve secondary zones as necessary; get the low hanging fruit • Homeowner education is critical

  16. Displacement Theory • Ductless heat pump installed to serve main living area (primary zone) • DHP becomes primary heating system for the majority of the heating season • Existing system stays in place for cold days and to address individual needs in secondary zones • Homeowner controls both systems; Taught to use existing system only as needed and that DHP can serve some secondary zones some of the time

  17. Managing the Zone and Displacement Theory kitchen 65 Bath 69 Bedroom 67 Living Room Bedroom 65 70 Typical electric heat home with main living area set at warmer temperature

  18. Displacement Theory and Managing the Zone OFF OFF OFF 64 OFF Bath kitchen Bedroom 68 66 Living Room DHP Bedroom OFF 68 64 OFF OFF OFF

  19. Displacement Theory Works!30 – 60% heating savings

  20. Displacement Theory Works!You can’t save if you don’t displace!

  21. Optimal Operation: • Set the heat pump thermostat at your comfort level to maintain a comfortable environment in the primary living space • Keep the electric resistance off and let the temperature “float” in the non-primary space (which is what many people do already) • Use the electric resistance sparingly and as needed; Don’t forget to turn it off • Setback the thermostat during the day and/or when at work • Run on Heat or Cool not “Auto” • Shoulder month operation: use as needed • Units do not run well under extremely low compressor speeds; Day’s when it’s okay to open a window, open a window rather than running the unit • The snowflake on the remote means “cooling”

  22. Manage the “zone” The key to good savings: Electric resistance is “Off”, DHP is “On” to allow the unit to displace electric resistance load Set the DHP thermostat to “your 68” (based on comfort) Hands-on DHP training is an essential part of every good installation

  23. Fuel Cost Comparison $55.67 $60.00 $47.60 $50.00 $43.13 $40.00 $33.65 $27.78 $24.74 $23.66 $30.00 $20.92 $19.33 $20.00 Cost / MMBtu $10.00 $0.00 Oil Wood Pellet Propane Kerosene Natural Gas Ductless HP Electric Res. Geothermal HP Fuel Fuel Cost Estimate

  24. Typical Payback

  25. DHPs can be Decorative

  26. The Enhanced ($1,000) Incentive • Targeted to full-time residences with electric heat: 50% or higher of permanent zonal electric heat • Promoted through installer networks and Home Energy Solutions • Will differentiate the most efficient DHP units (HSPF of 10 or higher) • Capped at one rebate per home with the “first zone” as the utility measure because that’s where the cost effective savings is • Offer non-geothermal, non-combustion, non-“cut in” solutions for electric heat customers (i.e. cost effective) • Provide electric heat customers with the best, most efficient HP technology available today • Generate interest from manufacturers and create potential upstream opportunities • Allow for simple paybacks of 3 – 5 years • Will maximize the electric benefit per customer/job • Huge untapped market potential • $500 OPM Rebate • Federal tax credit: 30% up to $1500

  27. Gold Medallion Homes, Condos, Apartments

  28. “Everything should be as simple as possible, but no simpler.” - Albert Einstein

  29. Contacts: Tom Ziobron, CL&P (860) 832-4718 ziobrtw@nu.com Patrick Burns, UI (203) 499-3504 patrick.burns@uinet.com Questions

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