SAVING MONEY IN HVAC SYSTEMS Rod Rhoads, GDS Associates Inc HVAC System Consideration$ What percent of a commercial business s energy usage comes from their HVAC system? How much money do commercial facilities spend per square foot on energy costs annually? How do you determine whether it s time to tune-up or replace new equipment? SAVING MONEY IN HVAC 3 1
Heating Your Business: Basic Facts 33% of a commercial business's energy usage comes from its HVAC system 30% of the energy usage comes from heating the air or water Commercial facilities spend $1.19 per square foot on energy costs annually Hospitals spend $2.26 per square foot on energy costs annually TITLE OF PRESENTATION 4 TYPES OF HVAC SYSTEMS Heating Ventilation Air Conditioning Systems of HVAC Boilers-Hot Water, Steam Furnaces- Force air gas heat Electric Furnace- air handler Heat pump- Air to Air Geothermal- Water source heat pump Chillers- air or water cooled Package Systems- Rooftops for gas, electric, hp, ac Radiant heating systems Recent update advances 90% AFUE, control packages Up to 98% AFUE DC or VFD motor drives Seer/EER improvements Improved controls & drives to water source heat/ac Improved EER, staging, controls Better focused heat facility 2
Boiler Example Commercial System Improvements CAN THIS EFFECT MY FACILITY? 3
Improve the Bottom Line Equipment upgrade/replacement Control improvements Drive or motor improvements Regular tune-ups & maintenance Variable Frequency Drives VFD to ac voltage Save energy to motors that can vary speed Increase motor life Fans or Pumps likely targets USA: 40 million AC motors/ 3% currently have VFD Controls Energy Management Systems (EMS) Building Automation System (BAS) Direct Digital Controls (DDC) Possible savings.37 per SF (EMS) Scheduled control by Zoning Variable speed control Night setback Runtime Optimization Economizer cycle use Reducing building static pressure Zoning by Orientation Domestic Hot Water reduction 4
No TLC = Poor Energy Savings No regular service + aging equipment = loss of savings! Regular annual service will equal less repair Fossil fuels equipment need annual care AC condenser coils and environment Boilers need regular check up & cleaning New tech advances help pay for upgrade See HVAC application for TUNE-UPS Repair or Replace? Consider age/expected life for equipment New unit payback from savings vs repair cost New warranties, less upkeep cost Incentives, rebates offered, tax breaks TUNE UP YOUR ANNUAL BUDGET 5
ActOnEnergy projects Steam Trap project saved 10,175 therms for 11 failed traps replaced Boiler replacement w/ 3 smaller 90%. Therm savings 5,107. 41% of annual usage Tank less water heaters (5) replace tank model saves 2,260 therms Incentive $4,151.24 Incentive $6,000.00 Incentive $6,000.00 Incentive Project examples VFD project two 30hp AC motors 91,554 kwh saved Furnace replacement to 92% 2,393 therms saved 31% of usage Furnace 95% AFUE replacements 6,197 therms saved Incentive $ 5,400.00 Incentive $2050.00 Incentive $5,460.00 FUTURE OF HVAC 6
Things are changing 80% AFUE furnaces gone in Illinois 5/2013 Department of Energy regional new map 90% AFUE furnace standard of North AC requirements up in South and West HP minimum 14 Seer & 8.2 HSPF nationally Effects of DOE decision 80% inventory on furnaces could be low 2013 90%, 92, & 94+ AFUE popular incentives Incentive change for new baseline of 90%? Limited effect on most customers Customers with venting issues (Apartments?) Rooftops Rooftops not included in furnace guideline Industry is working on higher EER standards Manufacturers working on IEER and options 10 ton most popular used 18 EER expected Tune-up incentives 7
INCENTIVES FOR ACTONENERGY HVAC incentives Tune-ups AC or Heat pumps Chillers- air cooled Chillers- water cooled Gas Boilers- HW or steam Furnace- gas forced air Incentive $25 per ton * $8.00 per ton* $4.00 per ton* $150-1,200. ** $ 50-125.00 *up to 50% of tune-up cost **over 2,000 kbtuh custom Replace Gas equipment Gas equipment Gas Boilers Hot Water Incentive $400-6,000 per boiler Gas Furnaces 90% AFUE 92% 94% or higher $200-400 per unit $300-600 per unit $400-800 per unit 8
Hot Water Heater replacements Tanked Electric WH Tanked Gas WH Condensing Tanked gas Tank less Gas WH Tank less Electric WH $150.00 per heater $150.00 per heater $300.00 per heater $1,200.00 per heater $ 300.00 per heater Must meet replacement criteria VFD New installs of VFD on an AC motor Minimum 2000 annual operation Pumping or air handling operations $90.00 per HP controlled May not exceed 75% of the project cost Custom applications Must PRE-APPROVE Project doesn t have a standard measure to use. HVAC project ideas: Geothermal, Chillers, Cooling towers, Radiant tube heaters, large boilers over 2,000 kbtuh EMS systems Must meet a 1-7 yr payback Incentive must be 10% of project cost Incentives based on KWH and therm savings 9
Steam Traps Surveys find the failed Replacements-failed Failed trap open leaking steam $30-50 per trap $100-400 per trap * * based on psig of trap QUESTIONS? 10