Chapter 10: Appliances and Lighting To be used with the Guide to Building Energy Efficient Homes in Kentucky

Energy Usage Appliances and home electronics account for 20% of energy bills.

Energy Usage

Energy Efficient Appliances Energy Use HeatingCoolingHot Water Major Appliances

New Appliance Considerations Consider: Operating costs = costs for the energy used to run the appliance Purchase price Features Image Courtesy:

Energy Efficient Appliances Energy efficient appliances may be more expensive Energy savings make energy efficient appliances a good buy

EnergyGuide Label

Required on: Refrigerators and freezers Water heaters Dishwashers Clothes washers Room and central air conditioners Heat pumps and furnaces Boilers Pool heaters Certain light bulbs and plumbing products Ceiling fans (2009) Not required on: Kitchen ranges Microwave ovens Clothes dryers Demand-type water heaters Portable space heaters

ENERGY STAR® Label

Lighting Standard incandescent bulbs Most common lighting sources for homes Inefficient – Converts 10% of electricity to lighting (90% is waste heat)

Lighting Compact fluorescent lamps (CFL) – Energy efficient LED lighting High-pressure sodium and metal halide lamps – Exterior use – Energy efficient

Conservation Create home designs that use : Use motion or occupancy sensors Energy efficient fixtures and lamps Local task lighting Accent lighting Timers and light-sensitive switches Sunlight Solid-state dimmers

Lighting About 12 lumens 60 watts About 840 lumens Lumen - the basic unit of measurement of light Wattage – measurement of power a lamp uses Efficiency – lumens/watt Average Rated Service Life – duration of bulb until burn out

Efficacy The efficiency (efficacy) of a lamp is measured in lumens of light produced per watt of electricity consumed.

Fluorescent Lighting Guidelines Type of RoomSize of Room (sq ft)Amount of Light Needed (watts) Living room, Bedrooms, Family room or Recreation room under to to to 80 over watt/sq ft Kitchen, Laundry, or Workshop under 7555 to to to 80 over watt/sq ft

Costs

Standard Designs versus Energy Efficient Residential Lighting Designs RoomHr/Day Standard Lighting DesignEnergy Efficient Design Type*WattsKwh/yr Extra Cost ($) Type*WattsKwh/yr Kitchen8I F60175 Living6I H Dining5I75137  I75137 Bathrooms (2)4I  I Hallway10I F60219 Bedrooms (3)4I F90131 Laundry4I F3044 Closets (5)1I  I Porch12I F30131 Floodlight12I3601,577100HPS Total Annual Electricity Use (kwh) 4,339 2,192 Annual Lighting Cost $.065/kwh) $282 $142 Annual Savings on Lighting Costs$140 Simple Extra Cost for Energy Efficient Lighting$235 Payback Period1.6 years Rate of Return on Investment60% *I = Incandescent; F = Fluorescent; H = Halogen; HPS = High Pressure Sodium

ENERGY STAR® Advanced Lighting Package ENERGY STAR® Advanced Lighting Package (ALP) = EPA designation to identify homes equipped with a comprehensive set of ENERGY STAR® qualified light fixtures: 60% ENERGY STAR® hard-wired fixtures 100% ENERGY STAR® ceiling fans

Recessed CFI Pin Light

Recessed Light

Advanced Lighting Package Benefits: Energy bill savings Improved quality Flexibility Qualified lighting fixtures generate ~ 75% less heat than standard incandescent lighting – Higher thermostat settings Reduce greenhouse gas emissions and air pollutants

Recessed Lights Potential problem is air leakage through the ceiling – Use air-tight labeled fixtures – Use insulation contact (IC) rated fixtures

Air-Tight Recessed Lights Sealed TrimSealed Lens Sealed Housing

Soffit Air Seal

Solar Tube Light

Solar Light Tube

Summary

Durable Convenient and practical Healthy Resource-efficient