CS54 Energy Code Feasibility Study in Quincy, Massachusetts
Energy code feasibility study for a 100-unit Multifamily Mid-rise in Massachusetts. Compares multiple design paths. Recommended: Either Path. View full study.
- Study Type
- Energy Code Feasibility Study
- State
- Massachusetts
- Units
- 100
- Building Type
- Multifamily Mid-rise
- Fuel Type
- All-Electric
- Recommended Path
- Either Path
Goal
To find the most cost-effective compliance path, this report isolates energy code related costs from total construction. We use real bid data from vendors & clients to create a reliable framework for aligning incentives and design, with all recommendations confirmed by detailed energy modeling.
Project
- Quincy, MA 02169
- 100 Units | 191,197 sqft
- New Construction | Multifamily | Mid-rise
- All-Electric | Stretch Code | HERS ≤ 45 | Energy Star MFNC v1.2
Overview
Read This: This report compares different ways you can build the project and meet energy code, looking at both cost and incentives, with the ultimate goal as finding the most affordable path.
- The overview outlines the key differences between each of the paths we show in this report and why we recommend the one we picked over the others.
- The recommended design section is where we share the requirements and incentives for the path we think is best based on affordability.
- The path comparison section shows the detailed requirements and incentives for each path we compared, basically showing our work if you want to dig in.
Study Summary
We compared two good options for your exterior walls:
- Continuous & Batt Insulation: Provides a slightly better safety net for your HERS score (about 0.5 extra points).
- Spray Foam Only (No Continuous): Cheaper and easier to build, but requires a slightly better ERV system.
We recommend getting quotes for both options and deciding based on final cost and constructability. If your HERS score ever falls out of compliance, there is no huge risk, both paths can use HVAC Grading as a backup to gain 2-3 points.
Code Path
Permit / Certificate of Occupancy Requirements
High Rise Buildings
Recommended Design
This section outlines the design requirements, product recommendations, and incentives for the design that we believe will be the most affordable path to meeting energy code.
Recommended Design - Incentives
MassSave Multifamily High Rise Program Energy Star Tier ($175,000) (Program Breakdown): You get this rebate for having your building(s) certified for the Energy Star MFNC v1.2 program. This requires pre-approval via an application to be submitted before construction starts. This rebate comes in the form of a check within 4 months of certification documentation being provided to MassSave, typically this is 4 months after construction is complete.
MassSave Multifamily Wifi Enabled Thermostat Adder ($10,000) (Program Breakdown): You get this rebate for installing wifi enabled thermostats in your units. This requires pre-approval via an application to be submitted before construction starts. This rebate comes in the form of a check within 4 months of certification documentation being provided to MassSave, typically this is 4 months after construction is complete.
Recommended Design - Units
| Item | Detailed Specifications |
|---|---|
| Exterior Walls | 2x6 Wood Studs @ 16"oc with R-23 batt cavity + 2" R-10 continuous insulation (Zip R9 OK). |
| Slab | R-10 fully insulated slab; fully covers underside and perimeter of slab. |
| Floor Over Garage | R-30 continuous insulation. |
| Rim Joists | Seal interior rim cavity with 3" closed-cell spray foam (R-20), continuous insulation to continue without breaking (where continuous insulation cannot continue, use 4.5" of R-30 spray foam). |
| Roof | R-60 Cavity Insulation. |
| Windows & Glass Doors | U-0.15 / SHGC 0.20, triple pane. |
| Doors | Opaque: R-4.75. |
| Air Sealing | ≤0.30 CFM50 per sqft of shell area, blower-door tested (Air sealing protocol) (Backup Air Sealing) |
| HVAC | Ducted air-source heat pump, HSPF2 ≥9.5, SEER2 ≥18.5, EER2 ≥12.0. 1BR & 1BR+ = 1.5 ton (18,000 BTU/hr) (product rec). 2BR = 2.0 ton (24,000 BTU/hr) (product rec). Townhomes & Large 2BR = 2.5 ton (30,000 BTU/hr) (SEER2 rating of this product is only 17.2, acceptable due to increased HSPF2 rating of 10.8, product rec) Ductless air-source heat pump, HSPF2 ≥11, SEER2 ≥26.3, EER2 ≥15.3; Carrier Infinity Series (Product Rec). S=1.5 ton (18,000 BTU/hr) Size per Manual J; Air handler located in conditioned space (mechanical closet). |
| Ductwork | Ducts outside conditioned space are to be insulated to R-8 & buried in attic insulation. |
| Duct Sealing | Duct total leakage: the greater of 8 CFM25/100 ft² conditioned floor area or 80 CFM25 (duct sealing protocol). |
| HVAC Grading | Fan Flow Test: N/A Watt Draw Test: N/A Refrigerant Charge: N/A |
| Mechanical Ventilation | Panasonic FV-12ESC1 or FV-15ESC1; 85-93% rated recovery. S: 30 CFM 1BR & 1BR+: 50 CFM 2BR: 70 CFM Townhomes: 100 CFM |
| Local Mechanical Exhaust | Bathroom(s): ≥ 50 CFM intermittent & ≤ 3.0 sones OR ≥ 20 CFM continuous & ≤ 2.0 sones. Kitchen(s): ≥ 100 CFM intermittent & ≤ 3.0 sones OR continuous, ≥ 5 ACH. Both: Exhaust directly outdoors, ENERGY STAR certified, utilize ERV. |
| Thermostats | Programmable thermostat. |
| DHW | Electric resistance storage tank, UEF ≥0.93, 50 gal, located in conditioned space (product rec). |
| DHW Piping | R-3 pipe insulation on all hot water lines. Maximum hot water pipe run per unit type: Studio ≤ 26 ft, 1BR ≤ 36 ft, 2BR ≤ 42 ft, Townhomes ≤ 52 ft. Targets = 1/2 of refPipeL formula 2·√(CFA/Nfl) + 10·Nfl at largest CFA in each tier. |
| Water Fixtures | Low-flow WaterSense certified ≤1.8 GPM showerhead, ≤1.5 GPM lavatory faucet, ≤1.8 GPM kitchen faucet |
| Refrigerator | ENERGY STAR, ≤450 kWh/yr (Studios & 1BR), ≤550 kWh/yr (2BR & 3BR) |
| Dishwasher | ENERGY STAR, ≤240 kWh/yr, 12 place settings, standard capacity (product rec). |
| Clothes Washer | ENERGY STAR electric, ≤99 kWh/yr, IMEF ≥2.92, ≥5.0 cuft capacity, front-load (product rec). |
| Clothes Dryer | ENERGY STAR heat-pump electric ventless, CEF ≥9, moisture sensing (product rec). |
| Stove / Oven | Electric induction & convection required (product rec). |
| Lighting | 100% high-efficacy (LED). |
| Solar Ready | Designated Solar Zone: Reserve a contiguous area equal to at least 40% of the total horizontal roof area. Contiguity: Zone free of obstructions, minimum 5 ft wide. Structural Capacity: 5 PSF collateral dead load. Electrical Infrastructure: Conduit pathways and reserved breaker space. |
| EV Ready | EV Ready infrastructure for at least 20% of total parking. Branch circuit and termination for required spaces, rated for at least 6.2 kVA per space. N/A |
| Paperwork & Modeling | HERS/ERI energy model, 2021 IECC checklists, ENERGY STAR checklists, incentive documentation. |
| Testing & Verification | Unit Blower Door Test, Duct Leakage Testing, Mechanical Ventilation Testing, Room Balancing, Predrywall & Final Inspection. |
Recommended Design - Common Areas
| Item | Detailed Specifications |
|---|---|
| Exterior Walls | 2x6 Wood Studs @ 16"oc with R-23 batt cavity + 2" R-10 continuous insulation. |
| Floor Over Garage | R-38 cavity insulation at wood studs. |
| Slab | R-10 fully insulated slab; fully covers underside and perimeter of slab. |
| Rim Joists | Seal interior rim cavity with 3" closed-cell spray foam (R-20), continuous insulation to continue without breaking (we're continuous insulation cannot continue, use 4.5" of R-30 spray foam). |
| Roof | R-60 Cavity Insulation. |
| Windows | Fixed: U-0.36 / SHGC 0.40 Operable: U-0.43 / SHGC 0.40 |
| Doors | Entrance: U-0.77 / SHGC 0.40; Opaque: U-0.61; |
| HVAC | Ducted/Ductless split heat pump; SEER2 ≥15.2 / HSPF2 ≥7.8 / EER2 ≥11.7; ENERGY STAR certified; sized per Manual J/S, ≤15% above calculated cooling load. |
| Duct Sealing | <=8 CFM25 per 100 ft² CFA or 80 CFM, whichever is greater. |
| Mechanical Ventilation | Per ASHRAE 62.1: Lobby/Office 5 cfm/person + 0.06 cfm/ft²; Fitness 20 cfm/person + 0.18 cfm/ft²; Corridor 0.06 cfm/ft²; Laundry 5 cfm/person + 0.12 cfm/ft². ERV required if total OA intake >=1,000 cfm. Demand controlled ventilation required for spaces >500 ft² with occupancy >25 people per 1,000 ft². |
| Local Mechanical Exhaust | Per ASHRAE 62.1 exhaust rates. Common restrooms, laundry, mechanical rooms as applicable. |
| Thermostats | Programmable with 5°F setback capability during unoccupied periods. |
| DHW | Point-of-use electric water heater for common restroom sinks (if applicable). |
| DHW Piping | Piping insulated to R-3 (<=1.5" pipe) / R-4 (>1.5" pipe). |
| Water Fixtures | WaterSense certified: Lavatory <=1.5 GPM; Toilet <=1.28 GPF; Urinal (if installed) <=0.5 GPF. |
| Lighting | 100% LED. LPD limits by space: Corridor 0.41 W/ft²; Lobby 0.84; Office 0.74; Fitness 0.63; Community Room 0.59; Laundry 0.53; Stairway 0.49; Mechanical/Electrical 0.43; Storage 0.38. |
| Lighting Controls | Occupancy/vacancy sensors in all common spaces (corridors/stairs may dim to 50% instead of off). Daylight responsive controls where daylighted area >150 ft². Automatic time switches on all common area lighting. |
| Solar Ready | Per dwelling unit table (building-wide requirement). |
| EV Ready | Per dwelling unit table (building-wide requirement). |
| Paperwork & Modeling | COMcheck report for common areas, ASHRAE 62.1 ventilation calcs, lighting power density calcs. |
| Testing & Verification | Mechanical ventilation balancing, lighting controls commissioning, rough-in and final inspection. |
Exterior Wall Assembly (Continuous)
Exterior Wall Assembly (Spray Foam)
Rim Joist (Continuous)
Rim Joist (Spray Foam)
Roof (Both)
Slab Edge (Both)
Floor Over Garage (Both)
Path Comparison
This section shows the detailed requirements and incentives for each path we compared, basically showing our work of how we determined the recommended path is the most affordable way of meeting energy code compliance.
Path Comparison - Incentives
MassSave Multifamily High Rise Program Energy Star Tier ($175,000) (Program Breakdown): You get this rebate for having your building(s) certified for the Energy Star MFNC v1.2 program. This requires pre-approval via an application to be submitted before construction starts. This rebate comes in the form of a check within 4 months of certification documentation being provided to MassSave, typically this is 4 months after construction is complete.
MassSave Multifamily Wifi Enabled Thermostat Adder ($10,000) (Program Breakdown): You get this rebate for installing wifi enabled thermostats in your units. This requires pre-approval via an application to be submitted before construction starts. This rebate comes in the form of a check within 4 months of certification documentation being provided to MassSave, typically this is 4 months after construction is complete.
Path Comparison - Net Cost Summary
| Path | Total Cost $/sf | Total Incentives $/sf | Net $/sf | OpEx Factor | Worst HERS | $/HERS Point |
|---|---|---|---|---|---|---|
| Spray Foam | $55.73 | $0.97 | $55.31 | 1.01 | 44.39 | 1.25 |
| Continuous | $57.63 | $0.97 | $57.23 | 1.01 | 43.93 | 1.30 |
Path Comparison - Envelope
| Item | Path | Detailed Specifications | Cost $/sf | Incentive $/sf | Net $/sf | OpEx Factor |
|---|---|---|---|---|---|---|
| Exterior Walls | Spray Foam | 2x6 Wood Studs @ 16"oc with R-30 spray foam (3.5" closed cell insulation, 2" open cell insulation). | $3.15 | $0.00 | $3.15 | 0.95 |
| Continuous | 2x6 Wood Studs @ 16"oc with R-23 batt cavity + 2" R-10 continuous insulation (Zip R9 OK). | $4.00 | $0.00 | $4.00 | 0.95 | |
| Slab | Spray Foam | R-10 fully insulated slab; fully covers underside and perimeter of slab. | $1.00 | $0.00 | $1.00 | 0.90 |
| Continuous | R-10 fully insulated slab; fully covers underside and perimeter of slab. | $1.00 | $0.00 | $1.00 | 0.90 | |
| Floor Over Garage | Spray Foam | R-30 continuous insulation. | $1.50 | $0.00 | $1.50 | 1.00 |
| Continuous | R-30 continuous insulation. | $1.50 | $0.00 | $1.50 | 1.00 | |
| Rim Joists | Spray Foam | Seal interior rim cavity with 4.5" closed-cell spray foam (R-30). | $0.35 | $0.00 | $0.35 | 0.90 |
| Continuous | Seal interior rim cavity with 3" closed-cell spray foam (R-20), continuous insulation to continue without breaking (we're continuous insulation cannot continue, use 4.5" of R-30 spray foam). | $0.40 | $0.00 | $0.40 | 0.90 | |
| Roof | Spray Foam | R-60 cavity insulation. | $1.80 | $0.00 | $1.80 | 0.95 |
| Continuous | R-60 cavity insulation. | $1.80 | $0.00 | $1.80 | 0.95 | |
| Windows & Glass Doors | Spray Foam | U-0.15 / SHGC 0.20, triple pane. | $15.00 | $0.00 | $15.00 | 1.10 |
| Continuous | U-0.15 / SHGC 0.20, triple pane. | $15.00 | $0.00 | $15.00 | 1.10 | |
| Doors | Spray Foam | Opaque: R-4.75. | $0.80 | $0.00 | $0.80 | 0.95 |
| Continuous | Opaque: R-4.75. | $0.80 | $0.00 | $0.80 | 0.95 | |
| Air Sealing | Spray Foam | ≤0.30 CFM50 per sqft of shell area, blower-door tested (Air sealing protocol) (Backup Air Sealing) | $0.60 | $0.00 | $0.60 | 0.90 |
| Continuous | ≤0.30 CFM50 per sqft of shell area, blower-door tested (Air sealing protocol) (Backup Air Sealing) | $0.60 | $0.00 | $0.60 | 0.90 |
Path Comparison - Mechanical
| Item | Path | Detailed Specifications | Cost $/sf | Incentive $/sf | Net $/sf | OpEx Factor |
|---|---|---|---|---|---|---|
| HVAC | Spray Foam | Ducted air-source heat pump, HSPF2 ≥9.5, SEER2 ≥18.5, EER2 ≥12.0. 1BR & 1BR+ = 1.5 ton (18,000 BTU/hr) (product rec). 2BR = 2.0 ton (24,000 BTU/hr) (product rec). Townhomes & Large 2BR = 2.5 ton (30,000 BTU/hr) (SEER2 rating of this product is only 17.2, acceptable due to increased HSPF2 rating of 10.8, product rec) Ductless air-source heat pump, HSPF2 ≥11, SEER2 ≥26.3, EER2 ≥15.3; Carrier Infinity Series (Product Rec). S=1.5 ton (18,000 BTU/hr) | $14.60 | $0.00 | $14.60 | 1.05 |
| Continuous | Ducted air-source heat pump, HSPF2 ≥9.5, SEER2 ≥18.5, EER2 ≥12.0. 1BR & 1BR+ = 1.5 ton (18,000 BTU/hr) (product rec). 2BR = 2.0 ton (24,000 BTU/hr) (product rec). Townhomes & Large 2BR = 2.5 ton (30,000 BTU/hr) (SEER2 rating of this product is only 17.2, acceptable due to increased HSPF2 rating of 10.8, product rec) Ductless air-source heat pump, HSPF2 ≥11, SEER2 ≥26.3, EER2 ≥15.3; Carrier Infinity Series (Product Rec). S=1.5 ton (18,000 BTU/hr) | $14.60 | $0.00 | $14.60 | 1.05 | |
| Ductwork | Spray Foam | Ducts outside conditioned space insulated to R-8 & buried in attic insulation. | $1.50 | $0.00 | $1.50 | 1.00 |
| Continuous | Ducts outside conditioned space insulated to R-8 & buried in attic insulation. | $1.50 | $0.00 | $1.50 | 1.00 | |
| Duct Sealing | Spray Foam | Duct total leakage: the greater of 8 CFM25/100 ft² conditioned floor area or 80 CFM25 (duct sealing protocol). | $0.25 | $0.00 | $0.25 | 0.95 |
| Continuous | Duct total leakage: the greater of 8 CFM25/100 ft² conditioned floor area or 80 CFM25 (duct sealing protocol). | $0.25 | $0.00 | $0.25 | 0.95 | |
| HVAC Grading | Spray Foam | Fan Flow Test: N/A Watt Draw Test: N/A Refrigerant Charge: N/A | $0.00 | $0.00 | $0.00 | 1.00 |
| Continuous | Fan Flow Test: N/A Watt Draw Test: N/A Refrigerant Charge: N/A | $0.00 | $0.00 | $0.00 | 1.00 | |
| Mechanical Ventilation | Spray Foam | Panasonic FV-12ESC1 or FV-15ESC1; 85-93% rated recovery. S: 30 CFM 1BR & 1BR+: 50 CFM 2BR: 70 CFM Townhomes: 100 CFM | $3.50 | $0.00 | $3.50 | 1.15 |
| Continuous | Panasonic FV-12ESC1 or FV-15ESC1; 85-93% rated recovery. S: 30 CFM 1BR & 1BR+: 50 CFM 2BR: 70 CFM Townhomes: 100 CFM | $3.50 | $0.00 | $3.50 | 1.15 | |
| Local Mechanical Exhaust | Spray Foam | Bathroom(s): ≥ 50 CFM intermittent & ≤ 3.0 sones OR ≥ 20 CFM continuous & ≤ 2.0 sones. Kitchen(s): ≥ 100 CFM intermittent & ≤ 3.0 sones OR continuous, ≥ 5 ACH. Both: Exhaust directly outdoors, ENERGY STAR certified, utilize ERV. | $1.50 | $0.00 | $1.50 | 1.05 |
| Continuous | Bathroom(s): ≥ 50 CFM intermittent & ≤ 3.0 sones OR ≥ 20 CFM continuous & ≤ 2.0 sones. Kitchen(s): ≥ 100 CFM intermittent & ≤ 3.0 sones OR continuous, ≥ 5 ACH. Both: Exhaust directly outdoors, ENERGY STAR certified, utilize ERV. | $1.50 | $0.00 | $1.50 | 1.05 | |
| Thermostats | Spray Foam | Programmable thermostat. | $0.00 | $0.00 | $0.00 | 1.05 |
| Continuous | Programmable thermostat. | $0.00 | $0.00 | $0.00 | 1.10 |
Path Comparison - Plumbing & Appliances
| Item | Path | Detailed Specifications | Cost $/sf | Incentive $/sf | Net $/sf | OpEx Factor |
|---|---|---|---|---|---|---|
| DHW | Spray Foam | Electric resistance storage tank, UEF ≥0.93, 50 gal, located in conditioned space (product rec). | $1.20 | $0.00 | $1.20 | 0.90 |
| Continuous | Electric resistance storage tank, UEF ≥0.93, 50 gal, located in conditioned space (product rec). | $1.20 | $0.00 | $1.20 | 0.90 | |
| DHW Piping | Spray Foam | R-3 pipe insulation on all hot water lines. Maximum hot water pipe run per unit type: Studio ≤ 26 ft, 1BR ≤ 36 ft, 2BR ≤ 42 ft, Townhomes ≤ 52 ft. Targets = 1/2 of refPipeL formula 2·√(CFA/Nfl) + 10·Nfl at largest CFA in each tier. | $0.15 | $0.00 | $0.15 | 0.95 |
| Continuous | R-3 pipe insulation on all hot water lines. Maximum hot water pipe run per unit type: Studio ≤ 26 ft, 1BR ≤ 36 ft, 2BR ≤ 42 ft, Townhomes ≤ 52 ft. Targets = 1/2 of refPipeL formula 2·√(CFA/Nfl) + 10·Nfl at largest CFA in each tier. | $0.15 | $0.00 | $0.15 | 0.95 | |
| Water Fixtures | Spray Foam | Low-flow WaterSense certified ≤1.8 GPM showerhead, ≤1.5 GPM lavatory faucet, ≤1.8 GPM kitchen faucet | $0.50 | $0.00 | $0.50 | 1.05 |
| Continuous | Low-flow WaterSense certified ≤1.8 GPM showerhead, ≤1.5 GPM lavatory faucet, ≤1.8 GPM kitchen faucet | $0.50 | $0.00 | $0.50 | 1.05 | |
| Refrigerator | Spray Foam | ENERGY STAR: ≤450 kWh/yr (Studios & 1BR), ≤550 kWh/yr (2BR & 3BR) | $0.80 | $0.00 | $0.80 | 1.00 |
| Continuous | ENERGY STAR: ≤450 kWh/yr (Studios & 1BR), ≤550 kWh/yr (2BR & 3BR) | $0.80 | $0.00 | $0.80 | 1.00 | |
| Dishwasher | Spray Foam | ENERGY STAR, ≤240 kWh/yr, 12 place settings, standard capacity (product rec). | $0.45 | $0.00 | $0.45 | 1.05 |
| Continuous | ENERGY STAR, ≤240 kWh/yr, 12 place settings, standard capacity (product rec). | $0.45 | $0.00 | $0.45 | 1.05 | |
| Clothes Washer | Spray Foam | ENERGY STAR electric, ≤99 kWh/yr, IMEF ≥2.92, ≥5.0 cuft capacity, front-load (product rec). | $0.60 | $0.00 | $0.60 | 1.15 |
| Continuous | ENERGY STAR electric, ≤99 kWh/yr, IMEF ≥2.92, ≥5.0 cuft capacity, front-load (product rec). | $0.60 | $0.00 | $0.60 | 1.15 | |
| Clothes Dryer | Spray Foam | ENERGY STAR heat-pump electric ventless, CEF ≥9, moisture sensing (product rec). | $0.60 | $0.00 | $0.60 | 1.30 |
| Continuous | ENERGY STAR heat-pump electric ventless, CEF ≥9, moisture sensing (product rec). | $0.60 | $0.00 | $0.60 | 1.30 | |
| Stove / Oven | Spray Foam | Electric induction & convection required (product rec). | $0.40 | $0.00 | $0.40 | 1.15 |
| Continuous | Electric induction & convection required (product rec). | $0.40 | $0.00 | $0.40 | 1.15 |
Path Comparison - Electrical
| Item | Path | Detailed Specifications | Cost $/sf | Incentive $/sf | Net $/sf | OpEx Factor |
|---|---|---|---|---|---|---|
| Lighting | Spray Foam | 100% high-efficacy (LED). | $3.50 | $0.00 | $3.50 | 0.85 |
| Continuous | 100% high-efficacy (LED). | $3.50 | $0.00 | $3.50 | 0.85 | |
| Solar Ready | Spray Foam | Designated Solar Zone: Reserve a contiguous area equal to at least 40% of the total horizontal roof area. Contiguity: Zone free of obstructions, minimum 5 ft wide. Structural Capacity: 5 PSF collateral dead load. Electrical Infrastructure: Conduit pathways and reserved breaker space. | $0.05 | $0.00 | $0.05 | 1.00 |
| Continuous | Designated Solar Zone: Reserve a contiguous area equal to at least 40% of the total horizontal roof area. Contiguity: Zone free of obstructions, minimum 5 ft wide. Structural Capacity: 5 PSF collateral dead load. Electrical Infrastructure: Conduit pathways and reserved breaker space. | $0.05 | $0.00 | $0.05 | 1.00 | |
| EV Ready | Spray Foam | EV Ready infrastructure for at least 20% of total parking. Branch circuit and termination for required spaces, rated for at least 6.2 kVA per space. | $0.60 | $0.00 | $0.60 | 1.00 |
| Continuous | EV Ready infrastructure for at least 20% of total parking. Branch circuit and termination for required spaces, rated for at least 6.2 kVA per space. | $0.60 | $0.00 | $0.60 | 1.00 | |
| HPWH Ready | Spray Foam | N/A | $0.00 | $0.00 | $0.00 | 1.00 |
| Continuous | N/A | $0.00 | $0.00 | $0.00 | 1.00 |
Path Comparison - Soft Costs
| Item | Path | Detailed Specifications | Cost $/sf | Incentive $/sf | Net $/sf | OpEx Factor |
|---|---|---|---|---|---|---|
| Paperwork & Modeling | Spray Foam | HERS/ERI energy model, 2021 IECC checklists, ENERGY STAR checklists, incentive documentation. | $0.10 | $0.00 | $0.10 | 1.00 |
| Continuous | HERS/ERI energy model, 2021 IECC checklists, ENERGY STAR checklists, incentive documentation. | $0.10 | $0.00 | $0.10 | 1.00 | |
| Testing & Verification | Spray Foam | Unit Blower Door Test, Duct Leakage Testing, Mechanical Ventilation Testing, Room Balancing, Predrywall & Final Inspection. | $0.23 | $0.00 | $0.23 | 1.00 |
| Continuous | Unit Blower Door Test, Duct Leakage Testing, Mechanical Ventilation Testing, Room Balancing, Predrywall & Final Inspection. | $0.23 | $0.00 | $0.23 | 1.00 |
Additional Design Considerations Not Represented In This Study
This study was focused on the comparison between using continuous insulation and not.