Heat Calculations.pdf
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- Attached to
- Lapham Estates - 2 West Street Macedon, New York
- Solicitation number
- 2137895
- Issued by
- Warren County, New York
About this file
This is an HVAC Load Calculations report prepared by Jovin Construction for Building C, Unit 6 at 2 West Main Street in Macedon, New York, as part of the Lapham Estates residential construction project. The calculations were performed on December 10, 2025, using Rhvac, an ACCA-approved Manual J and Manual D computer program, and are based on design conditions for Rochester, New York. The project involves a 2,313 square foot residential unit with 11 rooms and zones, including a basement, great room, dining room, kitchen, powder room, foyer, three bedrooms, bathrooms, laundry room, and primary bedroom with walk-in closet. The total building supply capacity is 648 CFM with duct sizing specified at 10x13 inches for the main trunk.
The heating load requirement is 26,450 BTUh (26.450 MBH) and the cooling requirement is 15,180 BTUh (1.27 tons), based on sensible loads of 13,968 BTUh (92 percent) and latent loads of 1,212 BTUh (8 percent). Winter design conditions are 0 degrees Fahrenheit with 70-degree indoor temperature, while summer conditions are 92 degrees outdoor with 75-degree indoor temperature and 50 percent relative humidity. The calculation accounts for infiltration rates of 0.320 air changes per hour in winter (75 CFM) and 0.160 air changes per hour in summer (38 CFM), with no specified ventilation air. Building structural components analyzed include double-pane low-emissivity glazing, metal doors with polyurethane cores, R-15 basement wall insulation, R-19 frame wall insulation, R-44 attic insulation, and R-30 floor insulation over open spaces. The report notes that all computed results are estimates and actual performance may vary based on building use and weather conditions.
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Text version
New Home HVAC Load Calculations for
Building C, Unit 6 2 West Main Street
Macedon Ny
Prepared By:
Vinny Jovin Construction
Wednesday, December 10, 2025
Rhvac is an ACCA approved Manual J and Manual D computer program.
Calculations are performed per ACCA Manual J 8th Edition, Version 2, and ACCA Manual D.
Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc.
ABR Wholesalers [ Rochester ] New Home Rochester, NY 14609-6136 Page 2
Project Report
General Project Information Project Title: New Home Project Date: Wednesday, December 10, 2025 Client Name: Building C, Unit 6 Client Address: 2 West Main Street Client City: Macedon Ny Company Name: Jovin Construction Company Representative: Vinny
Design Data Reference City: Rochester, New York Building Orientation: Front door faces North Daily Temperature Range: Medium Latitude: 43 Degrees Elevation: 547 ft.
Altitude Factor: 0.980
Outdoor Outdoor Outdoor Indoor Indoor Grains Dry Bulb Wet Bulb Rel.Hum Rel.Hum Dry Bulb Difference
Winter: 0 4.17 n/a n/a 70 n/a Summer: 92 71 36% 50% 75 17
Check Figures Total Building Supply CFM: 648 CFM Per Square ft.: 0.280 Square ft. of Room Area: 2,313 Square ft. Per Ton: 1,828 Volume (ft³) of Cond. Space: 19,923
Building Loads Total Heating Required Including Ventilation Air: 26,450 Btuh 26.450 MBH Total Sensible Gain: 13,968 Btuh 92 % Total Latent Gain: 1,212 Btuh 8 % Total Cooling Required Including Ventilation Air: 15,180 Btuh 1.27 Tons (Based On Sensible + Latent)
Notes
Calculations are performed per ACCA Manual J 8th Edition, Version 2, and ACCA Manual D.
All computed results are estimates as building use and weather may vary.
Be sure to select a unit that meets both sensible and latent loads according to the manufacturer's performance data at your design conditions.
\\scotty\HeatloadProjects\jovin-west ave macedon.rh9 Wednesday, December 10, 2025, 12:53 PM
Rochester, NY 14609-6136 Page 3
Miscellaneous Report
System 1 Input Data
Outdoor Dry Bulb
Outdoor Wet Bulb
Outdoor Rel.Hum
Indoor Rel.Hum
Indoor Dry Bulb
Grains Difference
Winter: 0 4.17 100% n/a 70 n/a Summer: 92 71 36% 50% 75 16.50
Duct Sizing Inputs Main Trunk Runouts
Calculate: Yes Yes Use Schedule: Yes Yes Roughness Factor: 0.00300 0.01000 Pressure Drop: 0.1000 in.wg./100 ft. 0.1000 in.wg./100 ft.
Minimum Velocity: 650 ft./min 450 ft./min Maximum Velocity: 900 ft./min 750 ft./min Minimum Height: 0 in. 0 in.
Maximum Height: 0 in. 0 in.
Outside Air Data Winter Summer
Infiltration Specified: 0.320 AC/hr 0.160 AC/hr
75 CFM 38 CFM
Infiltration Actual: 0.320 AC/hr 0.160 AC/hr Above Grade Volume: Cu.ft. Cu.ft.X 14,092 X 14,092
4,509 Cu.ft./hr 2,255 Cu.ft./hr X 0.0167 X 0.0167
Total Building Infiltration: 75 CFM 38 CFM Total Building Ventilation: 0 CFM 0 CFM
---System 1--- Infiltration & Ventilation Sensible Gain Multiplier: 18.33 = (1.10 X 0.980 X 17.00 Summer Temp. Difference) Infiltration & Ventilation Latent Gain Multiplier: 11.00 = (0.68 X 0.980 X 16.50 Grains Difference) Infiltration & Ventilation Sensible Loss Multiplier: 75.49 = (1.10 X 0.980 X 70.00 Winter Temp. Difference) Winter Infiltration Specified: 0.320 AC/hr (75 CFM), Construction: Average Summer Infiltration Specified: 0.160 AC/hr (38 CFM), Construction: Average
Rochester, NY 14609-6136 Page 4
Load Preview Report
Scope Net Ton ft.² /Ton Area
Sen Gain
Lat Gain
Net Gain
Sen Loss
Sys Htg
CFM
Sys Clg
CFM
Sys Act
CFM
Duct Size
Building 1.27 1,828 2,313 13,968 1,212 15,180 26,450 350 648 648
System 1 1.27 1,828 2,313 13,968 1,212 15,180 26,450 350 648 648 10x13
Zone 1 2,313 13,968 1,212 15,180 26,450 350 648 648 10x13
1-Basement 728 491 24 515 5,544 73 23 23 1--4
2-Great Room & Dining Room 326 3,399 883 4,282 4,409 58 158 158 2--5
3-Kitchen & Pantry 201 2,432 23 2,455 1,360 18 113 113 2--4
4-Pwd 36 205 12 217 533 7 10 10 1--4
5-Foyer 130 1,001 79 1,080 3,545 47 46 46 1--4
6-Bedroom 2 182 1,427 21 1,448 1,581 21 66 66 1--5
7-Bedroom 3 180 2,172 75 2,247 3,789 50 101 101 1--6
8-Bath 2 70 216 18 234 734 10 10 10 1--4
9-Laundry 56 64 0 64 86 1 3 3 1--4
10-Primary Bedroom & Wic 320 1,882 43 1,925 3,330 44 87 87 1--5
11-Primary Bath 84 679 34 713 1,539 20 31 31 1--4
Rochester, NY 14609-6136 Page 5
Duct Size Preview
Room or Duct Name
Source Minimum
Velocity Maximum
Velocity Rough.
Factor
Design L/100
SP
Loss
Duct Velocity
Duct Length
Htg Flow
Clg Flow
Act.
Flow
Duct Size
System 1
Supply Runouts
Zone 1
1-Basement Built-In 450 750 0.01 0.1 260.9 73 23 23 1--4
2-Great Room & Dining Room Built-In 450 750 0.01 0.1 577.9 58 158 158 2--5
3-Kitchen & Pantry Built-In 450 750 0.01 0.1 646.1 18 113 113 2--4
4-Pwd Built-In 450 750 0.01 0.1 108.9 7 10 10 1--4
5-Foyer Built-In 450 750 0.01 0.1 531.8 47 46 46 1--4
6-Bedroom 2 Built-In 450 750 0.01 0.1 485.2 21 66 66 1--5
7-Bedroom 3 Built-In 450 750 0.01 0.1 512.9 50 101 101 1--6
8-Bath 2 Built-In 450 750 0.01 0.1 114.8 10 10 10 1--4
9-Laundry Built-In 450 750 0.01 0.1 34 1 3 3 1--4
10-Primary Bedroom & Wic Built-In 450 750 0.01 0.1 639.9 44 87 87 1--5
11-Primary Bath Built-In 450 750 0.01 0.1 360.8 20 31 31 1--4
Other Ducts in System 1
Supply Main Trunk Built-In 650 900 0.003 0.1 717.3 350 648 648 10x13
SummarySummarySummarySummarySummarySummarySummarySummary
System 1
Heating Flow: 350
Cooling Flow: 648
Rochester, NY 14609-6136 Page 6
System 1 Summary Loads
Component Description
Area Quan
Sen Loss
Lat Gain
Sen Gain
Total Gain
4A-6-d: Glazing-Double pane low-e (e = 0.20 or less), high performance, sliding glass door, e=0.05 on surface 2, any frame, u-value 0.33, SHGC 0.33
258 5,963 0 7,622 7,622
11P: Door-Metal - Polyurethane Core 42 852 0 342 342 15A15-0ocw-8: Wall-Basement, , framing with R-15 sill to floor in 2 x 4 cavity, open core, no board insulation, plus interior finish, wood studs, 8' floor depth
957 3,492 0 117 117
12E-0sw: Wall-Frame, R-19 insulation in 2 x 6 stud cavity, no board insulation, siding finish, wood studs
1457.8 6,938 0 1,923 1,923
16B-44: Roof/Ceiling-Under Attic with Insulation on Attic Floor (also use for Knee Walls and Partition Ceilings), Vented Attic, No Radiant Barrier, Dark Asphalt Shingles or Dark Metal, Tar and Gravel or Membrane, R-44 insulation
892 1,373 0 1,020 1,020
21A-20: Floor-Basement, Concrete slab, any thickness, 2 or more feet below grade, no insulation below floor, any floor cover, shortest side of floor slab is 20' wide
728 1,376 0 0 0
20P-30: Floor-Over open crawl space or garage, Passive, R-30 blanket insulation, any cover
320 784 0 134 134
Subtotals for structure: 20,778 0 11,158 11,158 People: 4 800 920 1,720 Equipment: 0 1,200 1,200 Lighting: 0 0 0 Ductwork: 0 0 0 0 Infiltration: Winter CFM: 75, Summer CFM: 38 5,672 412 690 1,102 Ventilation: Winter CFM: 0, Summer CFM: 0 0 0 0 0
System 1 Load Totals: 26,450 1,212 13,968 15,180
Supply CFM: 648 CFM Per Square ft.: 0.280
System Loads Total Heating Required Including Ventilation Air: 26,450 Btuh 26.450 MBH Total Sensible Gain: 13,968 Btuh 92 %
Total Cooling Required Including Ventilation Air: 15,180 Btuh 1.27 Tons (Based On Sensible + Latent)
Calculations are performed per ACCA Manual J 8th Edition, Version 2, and ACCA Manual D.
All computed results are estimates as building use and weather may vary.
Be sure to select a unit that meets both sensible and latent loads according to the manufacturer's performance data at
Rochester, NY 14609-6136 Page 7
System 1, Zone 1 Summary Loads (Average Load Procedure for Rooms)
Component Description
Area Quan
Sen Loss
Lat Gain
Sen Gain
Total Gain
4A-6-d: Glazing-Double pane low-e (e = 0.20 or less), high performance, sliding glass door, e=0.05 on surface 2, any frame, u-value 0.33, SHGC 0.33
258 5,963 0 7,622 7,622
11P: Door-Metal - Polyurethane Core 42 852 0 342 342 15A15-0ocw-8: Wall-Basement, , framing with R-15 sill to floor in 2 x 4 cavity, open core, no board insulation, plus interior finish, wood studs, 8' floor depth
957 3,492 0 117 117
12E-0sw: Wall-Frame, R-19 insulation in 2 x 6 stud cavity, no board insulation, siding finish, wood studs
1457.8 6,938 0 1,923 1,923
16B-44: Roof/Ceiling-Under Attic with Insulation on Attic Floor (also use for Knee Walls and Partition Ceilings), Vented Attic, No Radiant Barrier, Dark Asphalt Shingles or Dark Metal, Tar and Gravel or Membrane, R-44 insulation
892 1,373 0 1,020 1,020
21A-20: Floor-Basement, Concrete slab, any thickness, 2 or more feet below grade, no insulation below floor, any floor cover, shortest side of floor slab is 20' wide
728 1,376 0 0 0
20P-30: Floor-Over open crawl space or garage, Passive, R-30 blanket insulation, any cover
320 784 0 134 134
Subtotals for structure: 20,778 0 11,158 11,158 People: 4 800 920 1,720 Equipment: 0 1,200 1,200 Lighting: 0 0 0 Ductwork: 0 0 0 0 Infiltration: Winter CFM: 75, Summer CFM: 38 5,672 412 690 1,102
System 1, Zone 1 Load Totals: 26,450 1,212 13,968 15,180
Supply CFM: 648 CFM Per Square ft.: 0.280
Zone Loads Total Heating Required: 26,450 Btuh 26.450 MBH Total Sensible Gain: 13,968 Btuh 92 %
Total Cooling Required: 15,180 Btuh 1.27 Tons (Based On Sensible + Latent)
Calculations are performed per ACCA Manual J 8th Edition, Version 2, and ACCA Manual D.
All computed results are estimates as building use and weather may vary.
Be sure to select a unit that meets both sensible and latent loads according to the manufacturer's performance data at
File details come from the government source that posted it. Updated .