NYSERDA High Performance Development Challenge

Redesign Report – The Good Home

Prepared for New York State Energy Research & Development Authority (NYSERDA) 17 Columbia Circle Albany, NY 12203-6399

Submitted by CDH Energy Corporation Cazenovia, NY The Levy Partnership, Inc. New York, NY

April 7, 2010

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NYSERDA High Performance Development Challenge Acquisition Report – Bill Stratton Building Co. & Dennis Wedlick Architect LLC Bill Stratton Building Co. of Old Chatham, NY has replaced Green Earth Companies as the builder. The new site is in Claverack, NY. Bill Stratton has signed on to the Memorandum of Understanding to participate in the High Performance Development Challenge with Dennis Wedlick Architect LLC, CDH Energy and The Levy Partnership, Inc. The home a single family detached dwelling with approximately 1660 square feet of space on two floors. The specifications for the base and upgrade designs are shown below. Table 1. Design specifications and costs

Component Base Upgrade

Slab insulation 2” rigid foam under entire slab (R-10)

12” EPS 1.15 pcf (87.4% of area max) with 2.85 pcf (12.6% of area min) at edges per structural drawing

Foundation wall insulation

2” rigid foam at edge (R-10)

4” XPS inside foundation wall (slab edge) per drawings 2” x 24” XPS on exterior per drawings XPS at sill plate per drawings

Exterior walls 6.5” EPS SIPs 12.25” EPS SIPs

Roof panels 8.25” EPS SIPs 12.25” Neopor EPS SIPs

South wall mullions Trim only, no insulation 2” thick polyisocyanurate insulation under trim per drawings

Window/door package U: 0.30, SHGC: 0.30 Serious Materials window and door package

Roof windows U: 0.30, SHGC: 0.30 Fakro FPL preSelect

Window coverings Non-thermal window shades

Hunter Douglas Architella honeycomb window coverings:

• 1.25” thick at the following windows: Front-Centre (2), Front-Centre- lower (2), Front-Casement (2), Front-Below casement (2), Right-Bedroom- Casements (2), Rear-casement (1).

• 0.75” thick at roof windows (2)

Air sealing (slab, walls, roof, penetrations)

To achieve approx. 5.0 ACH50 target: all SIP panel joints taped and foamed

To achieve 0.50 ACH50 target: all SIP panel joints taped and foamed; slab penetrations encased in PVC pipe and filled with expanding foam; all electrical and other chases cut into SIPs back-filled with foam; all envelope penetrations caulked/foamed; all window/door rough openings foamed between window and framing; See air barrier drawings

Heating/cooling system

Viessmann Vitodens 200-W Gas fired condensing boiler (Model # WB2 15-60) / AC 2 ton 14 SEER

Two Mitsubishi heat pumps, model numbers: MSZ-FE12NA / MUZ-FE12NA (living area) and MSZ-FE09NA / MUZ-FE09NA (bedroom)

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Component Base Upgrade

Water heater Tankless electric; 99% efficient

Tankless electric; Bosch model PowerStar AE-125

Refrigerator Liebherr 30” Ref/Freezer (Model # Cl1601)

GE Profile ENERGY STAR 21.1 Cu. Ft. Bottom-Freezer Refrigerator (Model # PDCS1NCYLSS)

Dishwasher GE Monogram 24” Dishwasher (Model # ZBD6890NII)

KitchenAid single Drawer Dishwasher (Model # KUDD03STSS)

Clothes washer Miele 24” Front Load washer (Model # W3035)

GE 2.6 IEC Cu. Ft. Capacity Frontload Washer with Stainless Steel Basket (Model # WCVH4800KWW)

Clothes dryer Miele 24” Electric Dryer (Model # T8005)

GE 4.0 Cu. Ft. Capacity Frontload Electric Dryer (Model # DCVH480EKWW)

Lighting 100% CFL, pin-fluorescent or LED 100% CFL, pin-fluorescent or LED

Ventilation system Bath exhaust fans, two bathrooms, range hood exhaust

Heat Recovery Ventilator; Zehnder ComfoAir 200, including sound baffles and filter

Ventilation system ductwork

For two bath exhaust fans, range hood, clothes dryer

Layout per mechanical system diagram; R-16 insulation on ducts from HRV to exterior per Mechanical system diagram

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Table 2 shows seven performance metrics that were selected because they can be predicted based on the REM/Rate software analysis and estimated using first year energy consumption data. The upgraded predicted values and HERS score will be updated at the completion of construction based on the results of the final inspections and tests to best reflect the completed structure. Predictions and results are compared to the output of the Passive House Planning Package, the software analysis program being used for certification of the house under the Passive House standard. PHPP and REM/Rate are in close agreement for heating and cooling energy, but PHPP estimates a much lower base load energy usage. Table 2. Performance metrics

Performance Metric Original design

REM/Rate prediction1

Upgraded design

REM/Rate prediction

Upgraded design PHPP

prediction

Measured (using first year data)

Annual energy consumption – Heating (MMBtu/yr)

53.2 7.9 7.5 TBD

Annual energy consumption – Cooling (MMBtu/yr)

2.9 2.8 1.8 TBD

Annual energy consumption – Base load (water heating, lights, appliances, plug) (MMBtu/yr)

29.5 30.1 10.1 TBD

Total annual energy consumption (MMBtu/yr) 85.6 40.8 19.4 TBD

Energy consumption per sf conditioned space – Heating (Btu/sqft/yr)

35,255 4,759 4,518 TBD

Energy consumption per sf conditioned space – Cooling (Btu/sqft/yr)

1,922 1,687 1,084 TBD

NY HERS Score 84.4 90.6 N/A N/A

1 The original design was 1509 sf compared to the final design of 1660 sf

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A rigorous inspection and management process will be employed to ensure the home is constructed in accordance with the modeling assumptions (or better), to document the construction process for future reporting, and to learn from the implementation experience. Table 3 indicates the stage at which each key energy-related construction element will be inspected and the nature of the inspection. Table 3. Construction inspection plan

Inspection Stage Component

A B C Inspection/Test Description

Foundation Inspect for spec on foundation wall insulation Slab insulation and vapor barrier Inspect for proper spec on slab insulation, vapor barrier continuity

and slab penetration air sealing Above grade walls and roof Inspect for SIP spec, installation quality and detailing for air

sealing and thermal bridging Windows and glass doors Inspect for product spec, air sealing between unit and rough

opening Heating/cooling system Inspect for product spec and operation

Hot water system Inspect for product spec and operation

Duct leakage (HRV ducts to outside)

B: Inspect for good duct installation practices – sealing and location, test for total duct leakage, diagnose and repair leaks as necessary C: Test for duct leakage to the outside if necessary, diagnose and repair leaks as necessary to meet target. Inspect duct insulation.

Infiltration

B: Inspect air sealing in all areas, preliminary test for shell leakage, diagnose and repair leaks as necessary C: Final test for shell leakage, diagnose and repair leaks as necessary to meet target

Ventilation system Inspect for product spec and correct installation Lighting and Appliances Inspect for proper spec

*Note: Photographs will be taken of relevant installation details, product labels, tests in process, finished home. Attachments:

o A2.11 A2_PLAN(first&loft) – floor plans o A3.20 A3_SECTION – building sections

Stages of Inspection A Foundation

B Pre-drywall

C Complete

THERM

AL B

RIDG

E - NO

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THERM

AL B

RIDG

E - SOU

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ALL C

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