Energy Conservation

1.Air Sealing Holes/Cracks 2. Improved Insulation 3. Increased Efficiency of Heating/Cooling &

Domestic Hot Water (DHW)4.Lighting & Efficient Appliances/Products 5.Staff and resident education

Top Energy Reduction Strategies

Major Home Energy Usage Air SealingAir Sealing

Energy Loss: Infiltration & Ventilation

Common Air Sealing Opportunities–Electrical penetrations–Plumbing penetrations–Window framing–Wall to floor

connection–Doors and vestibules–Basement ceiling–In-unit ventilation

grills–Ducts, plenums,

registers

General Air Sealing Guidelines

Gaps ≤ 1/4"

CaulkGaps 1/4" – 3"

Spray foam

OtherFoam board,

fiberglass in plastic bags, etc.

General Air Sealing Guidelines

Doors & Windows

Weatherstripping

Ducts & Plenums

Mastic, Duct Tape

How did the resident cut their bill in half? Insulation Insulation & Other EnvelopeImprovements

Measuring the Efficacy of Insulation

R-value: The measure of a material’s resistance to heat transfer.

Insulation Target R-Values

www.naima.org

Blown-In Attic Insulation

How much is in that back corner?

Staple rulers every 15 feet for even coverage

Source: www.waptac.org

Reality

Other Envelope Strategies

Solar Screens

Reflective Metal

Roof

Radiant Barrier

How a smart strip surge protector works Lighting & AppliancesLighting & Appliances

ENERGY STAR

ENERGY STAR-certified products meet energy efficiency standards set by the U.S.

Environmental Protection Agency. They are tested in laboratories and off-the-shelf.

Where to Use ENERGY STAR Lighting?

17

Rooms Family and living

room Kitchen Dining room Porch

Fixtures Table lamps Floor lamps Wall sconces Pendants Open ceiling fixtures

Lighting: Use Sensors & Bi-level Lighting Occupancy or motion sensors turn lights on

when people enter the area Photo Sensors sense light and turn lights on

and off based on light levels inside and out Bi-level lighting dims lights when

no one is present Good for areas

where light levels have to be maintained and not off to meet code

Foundation Communities Lighting Inventory

Goal: Comprehensive inventory of all lighting fixtures at FC for use in planning phased lighting upgrade

Timeframe: May-October 2013

Energy Star Products/AppliancesENERGY STAR Available: Bathroom Fans Refrigerator Computer Window Kitchen Fans Air Conditioning Units Hot Water Heaters Heating/Cooling

Equipment Dishwasher Lighting Dehumidifier Clothes Washer

ENERGY STAR NOT Available:

Clothes Dryer Mini fridge Stove Microwave

Measuring Phantom Loads

Ways to save energy through purchasing HVAC & Domestic Hot Water (DHW)HVAC & Domestic Hot Water (DHW)

A Few Measures of Efficiency

SEER: Measures AC efficiency (split systems) EER: Measures AC efficiency (PTACs) EF: Measures appliance efficiency, including

water heaters

Replacing HVAC

Buy high-efficiency equipment 14.5 SEER for split system HVACs 10.8 EER for heat pump PTACs

Have the equipment sized to load, ask your engineer to show the math (Ask for the ACCA Manual J report) Measured in tons of cooling

Use R410 Refrigerant

Typical Hot Water Heaters Inefficient Short life Can spill or backdraft

products of combustion

Notorious for carbon monoxide production

Alternative Hot Water Heat Pump Water

Heater Tankless Gas Water

Heater

Alternative Hot Water Solar Thermal Gas Condensing

How did the resident cut their bill in half? Evaluating Multifamily BuildingsEvaluating & UpgradingMultifamily Buildings

Benchmarking: Read Your Utility BillLook at the utility bill and answer the following

questions.1. What is the total bill amount?2. What is the invoice date?3. What was the electric consumption in kWh?

What was the demand in kW?4. Look at the account breakdown on the

second page.1. What are the different per-kW charges? (Identify

charge type and amount.)2. What are the different per-kWh charges? (Identify

charge type and amount.)

Conduct An Energy Audit Different levels of auditing by increasing

complexity Walkthrough audits Weatherization audits Whole building audits Investment grade audits

Hire an expert BPI certified Uses ASHRAE standards

Choose Upgrades

Focus on the top five strategies

1.Air Sealing Holes/Cracks 2. Improved Insulation 3. Increased Efficiency of Heating/Cooling &

Domestic Hot Water (DHW)4.Lighting & Efficient Appliances/Products 5.Staff and resident education

Simple Payback

A way to calculate the time it will take to recuperate your investment in resource efficiency upgrades.

Simple payback period =

(in years)

Cost of efficiency measure

Annual savings

Simple Payback - Practice

Measure Cost Annual Savings

1 New 14.5 SEER split system HVAC, installed

$2,500 $500

2 LED light bulb $15 $16.30

3 R-38 insulation $1,800 $275

Simple payback period =

(in years)

Cost of efficiency measure

Annual savings

How did the resident cut their bill in half? Evaluating Multifamily BuildingsEasy, Free Things You Can Do Today

Easy & Free

1. Shut windows & doors when HVAC is on2. Lower the set temperature of your water

heater (~120°F)3. Lower the set temperature of your furnace

(65° - 70°F4. Raise the set temperature of your A/C (76°

- 82°F)5. Shut off phantom loads6. Program your thermostat