Building your Energy Efficient New Home or Apartment Building

Transcription

1 Building your Energy Efficient New Home or Apartment Building

2 Learning Objectives: The features of an energy efficient building How energy efficient buildings are rated on the EnerGuide scale The features of a highly energy efficient building Zero Energy Housing Efficiency NB New Construction Incentives

3 What are the features of an energy efficient building? A well-insulated building envelope Airtight construction Energy efficient windows/doors Heat recovery ventilation ENERGY STAR qualified heating system ENERGY STAR qualified appliances and lighting

4 Understanding the EnerGuide Scale EnerGuide is a rating system used to rate the relative energy efficiency of a house New houses built to achieve EnerGuide 83 or higher can qualify for an incentive from Efficiency NB (see for full details) Zero energy buildings achieve an EnerGuide rating of 100

5 Sample EnerGuide Label 83

6 The Energy Evaluation An energy evaluation is necessary to determine an EnerGuide rating. The evaluation provides important design information about energy features and performance to anyone constructing a new home or apartment building. Energy evaluations are conducted by Service Organizations (SO s)licensed by Natural Resources Canada Visit our website for a list of licensed new home SO s (

7 The Energy Evaluation Process 1. Plans and building specifications are reviewed using computer modeling software. An EnerGuide rating is estimated and efficiency upgrades can be evaluated/compared 2. Once construction is completed, a site visit and air tightness test is conducted to determine the actual Energuide rating 3. An EnerGuide label is issued

8 Energy Efficiency Specifications Efficiency NB has developed a list of Energy Efficiency Specifications as a guide to help builders with their construction planning Most buildings constructed to these specifications will reach an EnerGuide 83 rating when using nonelectric heating systems (only buildings with non-electric primary heating systems qualify for incentives from Efficiency NB) Buildings still require a full EnerGuide evaluation to receive a rating and qualify for provincial rebates

9 Energy Efficiency Specifications Energy Efficiency Specifications Ceiling Above grade walls Floor header Exposed Floors Basement walls Below slab Slab on grade edge thermal break Windows Exterior Doors Ventilation Equipment Heating Systems Hot Water Heaters R-50 nominal R-24 nominal or R-20 effective R-24 nominal or R-20 effective R-28 nominal or R-24 effective R-24 nominal or R-20 effective R-10 nominal R-4 nominal ENERGY STAR qualified for Zone B ENERGY STAR qualified or steel insulated ENERGY STAR qualified or HVI certified See next slide See next slide For full details, visit

10 Heating and Hot Water Systems Technology System Type Program Requirement Natural Gas Furnace Min AFUE 94% Boiler ENERGY STAR qualified Oil Furnace ENERGY STAR qualified Boiler ENERGY STAR qualified Heat Pumps Air Source - ENERGY STAR qualified Ducted Air Source - Ductless For Homes: ENERGY STAR qualified, For Multi Unit Residential Buildings: ENERGY STAR qualified, at least one system per unit. Geothermal ENERGY STAR qualified Wood Furnace/boiler CSA B415 certified or tested to EPA standards with a min Pellet Gas, Oil, Electric Stove/furnace/ boiler Hot Water Heater 75% efficiency and not more than 4.5 g/hr or 0.4g/MJ All qualify Condensing Gas with a TE of 90%; or Instantaneous Gas with an EF of 0.86; or Indirect fired with 2 insulation; or Desuperheater with geothermal; or electric resistance (if other options are not available)

11 Features of Super Energy Efficient Buildings An EnerGuide Rating of 85 to 90+ can be achieved by upgrading a number of features of your building Options for improving the energy efficiency of your building include: Increased wall, ceiling and foundation insulation Improved air tightness High ENERGY STAR rated windows High efficiency heating Maximized passive solar heating Ground source heat pumps Solar domestic hot water systems

12 Net Zero Energy Houses Net Zero Energy Houses these houses are connected to the electrical utility grid, and do not require a storage system for renewably generated electricity. Instead homeowners buy and sell electricity to and from the grid as needed. Zero Energy Houses - these houses are typically not connected to the electrical utility grid, and provide all of their energy needs from renewable sources. They require a storage system (such as batteries) for renewably generated electricity.

13 Net Zero Energy Houses A number of net zero energy houses have been built through the Canadian Mortgage and Housing (CMHC) Equilibrium Housing (EQ) Initiative More than 12 EQ demonstration houses have been built across Canada. Technical information on these houses is available at:

14 New Construction Incentives Efficiency NB offers a range of financial incentives for new homes that: are built to an EnerGuide 83 or higher rating, or are built to our Energy Efficiency Specifications, and do not use electric resistance heating as the primary heat source Incentives are also available for apartment buildings built to the Energy Efficiency Specifications Visit our website for details on program incentives (

15 New Construction Incentives for Homes Incentive Efficiency Incentive Solar Domestic Hot Water (SDHW) Amount Description For homes built to meet the Energy Efficiency $1,500 Specifications or that achieve an EnerGuide rating of 83 or higher $2,500 Geothermal $5,000 Net Zero $7,500 For homes that qualify for the Efficiency Incentive and add SDHW systems For homes that qualify for the Efficiency Incentive and add qualifying Geothermal space heating and hot water systems For homes that have been pre-qualified by Efficiency NB and designed to Net Zero performance standards Visit our website for more details (

16 New Construction Incentives for Apartment Buildings Incentive Energy Efficiency Incentive Solar Domestic Hot Water (SDHW) central Solar Domestic Hot Water (SDHW) individual Geothermal Heating Incentive Amount Description $500 $500 per unit will be awarded to buildings per unit that meet the Energy Efficiency Specifications $750 $750 per unit will be awarded to buildings per unit that meet the Energy Efficiency Specifications and add a centrally distributed SDHW $1,500 per unit $2,500 per unit system $1,500 per unit will be awarded to buildings that meet the Energy Efficiency Specifications and add SDHW systems in each unit. $2,500 per unit will be awarded to buildings that meet the Energy Efficiency Specifications and have an ENERGY STAR qualified geothermal heating system Visit our website for more details (

17 Sources of Information Canadian Home Builders Builders Manual Canada Mortgage and Housing Equilibrium House Program Demo Projects About Your House Series Natural Resources Canada New Homes

18 Other Documents in this series: Visit efficiencynb.ca/learningcenter Building Materials Overview Introduction to Home Heating Heating with Electricity Heating with Oil and Gas