Features / Sizing report
Sizing report
The compliant sizing report, generated automatically
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Heat pump sizing note
Calculated to NF EN 12831-1
General information
Beneficiary
Mrs Margaret Hughes
contact@argile.ai
Phone
+44 7700 900457
Works address
7 Rosewood Close, Sheffield
Air-to-water heat pump
Model
Alféa Extensa S. 10
Make
Atlantic
Rated output
10 kW
ηs at 35 °C / 55 °C
195 % / 154 %
COP
3,5
Controller
Classe VI
EPREL no.
2491075
Heat loss of the home
6,0 kW
Output at the design temperature
5,80 kW
3,59 kW
7,78 kW
0 %
60 %
130 %
Coverage of the demand
Equipment output / heat loss of the home
97 %
Sizing of the appliance
Roofs
Transmittance W/m².K
1,8
Area m²
65,2
Heat loss W/K
135,0
Floors
Transmittance W/m².K
0,6
Area m²
63,0
Heat loss W/K
15,6
Thermal bridges
Conductivity W/K/m
0,4
Lengths m
33,4
Heat loss W/K
12,5
Façades
Transmittance W/m².K
0,9
Area m²
162,4
Heat loss W/K
151,4
Openings
Transmittance W/m².K
1,2
Area m²
5,5
Heat loss W/K
10,9
Air renewal
Air change rate h⁻¹
0,8
Heat loss W/K
102,3
Temperature difference
Outdoor design temperature
-7 °C
Heat pump cut-off temperature
5 °C
Indoor set temperature
19 °C
DeltaT
14,0 °C
Construction coefficient
Volume (area × ceiling height)
378,0 m³
Equivalent G value
1,13 W/m³/K
Compliant with EN 12831-1 and built from the data collected during the site visit, the sizing report comes out of the flow with no extra work, ready for the customer's file.
01
Compliant with EN 12831-1
the heating demand is calculated to the standard, and Argile flags an undersized machine as readily as an oversized one
Total heat loss
6,0 kW
Façades
35 %
2,1 kW
Roof
32 %
1,9 kW
Ventilation
24 %
1,4 kW
Floors
4 %
0,2 kW
Thermal br.
3 %
0,2 kW
Windows
3 %
0,2 kW
Emitter output at P50
11,9 kW
reference regime, 50 K delta
At the chosen water temperature
6,3 kW
55 °C flow, 45 °C return
Heat loss of the home
6,0 kW
80 %
120 %
Coverage rate
emitter output / heat loss
105 %
Sufficient
02
Generated automatically
nothing to re-enter: the radiators' output is recomputed at every entry, at P50 as at the chosen flow temperature
Roofs
Transmittance W/m².K
1,8
Area m²
65,2
Heat loss W/K
135,0
Façades
Transmittance W/m².K
0,9
Area m²
162,4
Heat loss W/K
151,4
Floors
Transmittance W/m².K
0,6
Area m²
63,0
Heat loss W/K
15,6
Openings
Transmittance W/m².K
1,2
Area m²
5,5
Heat loss W/K
10,9
03
The calculation, item by item
roofs, façades, floors, openings, thermal bridges and air renewal, each with the transmittance and the area used
-8 °C
Heat pump
5 620 W
Backup
612 W
Heat loss
6 232 W
Temperature histogram
6 h
Backup
Heat pump
Heat loss
Temperature histogram
04
Output by temperature
the heat pump's output, the electric backup and the home's heat loss, outdoor temperature by outdoor temperature over a year
Heat loss of the home
6,0 kW
Output at the design temperature
5,80 kW
3,59 kW
7,78 kW
0 %
60 %
130 %
Coverage of the demand
Equipment output / heat loss of the home
97 %
05
A solid file
heat loss, output at the design temperature and coverage of the demand on a single page, to attach to the quote for customers, lenders and grant bodies
They already trust us
+2000
installers
generate their sizing reports with Argile
10,000
products
kept up to date in our manufacturer catalogues
The journey
Camille Martin
/
Works plan
/
Air-to-water heat pump installation
Air-to-water heat pump installation
Save the job
1
Home details
2
Works
3
Equipment choice
4
Projected works
Next step
Zones to heat
Emitter coverage
105 %
Radiators
Area to heat *
Simple
Expert
130 m²
Add an emitter
Click to add an underfloor heating zone
The customer’s heating preferences
Flow water temperature
35°
40°
45°
50°
55°
60°
65°
70°
75°
Low temp.
Medium temp.
Recommended
High temp.
Indoor set temperature
19°
20°
21°
22°
23°
Economy
Standard
Comfort
Comfort +
High performance
6,00 kW
Heat loss of the home over the heated area
11,90 kW
Estimated emitter output at P50
6,30 kW
(105 % coverage)
Estimated emitter output at the chosen water temperature
01
Home details
Zones to heat declared by emitter type, radiators or underfloor heating, with the area each one covers, then the customer's preferences: flow water temperature and indoor set temperature, from which Argile derives the emitter coverage.
Heat pump project
Document the air-to-water heat pump project
Zone to heat
Rooms & emitters
Unit positions
4
Sizing
Choose an indoor set temperature
19°
20°
21°
22°
23°
Economy
Standard
Comfort
Comfort +
High performance
Planned insulation
External wall insulation
Upper floor insulation
Ground floor insulation
Window replacement
Check of the radiators’ output
Estimated heating demand
6,0 kW
Low temperature
2,2 kW
UNDERSIZED
Medium temperature
6,3 kW
RECOMMENDED
High temperature
12,2 kW
OVERSIZED
Back
Confirm
02
Heat loss calculation
The heating demand is estimated from the survey and the planned insulation, then checked against the radiators' output: low, medium and high temperature, each judged undersized, recommended or oversized.
Camille Martin
/
Works plan
/
Air-to-water heat pump installation
Air-to-water heat pump installation
Save the job
Home details
Works
3
Equipment choice
4
Projected works
Next step
Equipment
Switch to separate units
HEAT PUMP KIT SELECTED
Alféa Extensa S. 10
Default
Atlantic
HEAT PUMP COVERAGE
97 %
Controller
VI
Application
Medium temp.
Max temp.
60 °C
ηs 35 °C
195 %
ηs 55 °C
154 %
Output
10 kW
COP
3,50
Use
Heating
Phases
Single-phase
Quantity
x1
Price excl. VAT
4 890,00 €
VAT
5,50 %
Price incl. VAT
5 158,95 €
Labour
5 390,00 € TTC
3 items selected
DEFAULT
Removal
Price incl. VAT
1 500,00 €
Installation
Price incl. VAT
3 000,00 €
Adaptation package
Price incl. VAT
890,00 €
Accessories
589,00 € TTC
1 item selected
DEFAULT
Safety group supply
Price incl. VAT
589,00 €
03
Choosing the equipment
The machine picked from your catalogues shows its coverage against the calculated demand, with its application, its ηs at 35 °C and 55 °C, its COP and its output, labour and accessories attached to the job.
Heat pump sizing note
Calculated to NF EN 12831-1
General information
Beneficiary
Mrs Margaret Hughes
contact@argile.ai
Phone
+44 7700 900457
Works address
7 Rosewood Close, Sheffield
Air-to-water heat pump
Model
Alféa Extensa S. 10
Make
Atlantic
Rated output
10 kW
ηs at 35 °C / 55 °C
195 % / 154 %
COP
3,5
Controller
Classe VI
EPREL no.
2491075
Heat loss of the home
6,0 kW
Output at the design temperature
5,80 kW
3,59 kW
7,78 kW
0 %
60 %
130 %
Coverage of the demand
Equipment output / heat loss of the home
97 %
Sizing of the appliance
Roofs
Transmittance W/m².K
1,8
Area m²
65,2
Heat loss W/K
135,0
Floors
Transmittance W/m².K
0,6
Area m²
63,0
Heat loss W/K
15,6
Thermal bridges
Conductivity W/K/m
0,4
Lengths m
33,4
Heat loss W/K
12,5
Façades
Transmittance W/m².K
0,9
Area m²
162,4
Heat loss W/K
151,4
Openings
Transmittance W/m².K
1,2
Area m²
5,5
Heat loss W/K
10,9
Air renewal
Air change rate h⁻¹
0,8
Heat loss W/K
102,3
Temperature difference
Outdoor design temperature
-7 °C
Heat pump cut-off temperature
5 °C
Indoor set temperature
19 °C
DeltaT
14,0 °C
Construction coefficient
Volume (area × ceiling height)
378,0 m³
Equivalent G value
1,13 W/m³/K
04
Issuing the report
The report comes out of the flow as one document: heat loss item by item, the temperature difference used, the construction coefficient, the machine's output and the coverage of the demand, attached to the customer file.
“When several teams are involved, everyone needs to work with the same information. Argile helps us standardize our visits and better manage our projects.”
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Air-to-water heat pump
From the site visit to a sizing report compliant with EN 12831-1: Argile guides your teams at every step, calculates the required output, picks the equipment from up-to-date catalogues and shows the customer the energy they will save.
Customers
/
Camille Martin
Details
Dwelling
Works plans
Quotes
Admin & finance
Quote no. D2026-0042
History
Analysis
Preview
Save
The property
Energy renovation
Information
4
The quote
5
Terms
Next step
The quote
No.
Description
Qty
Unit
Unit price excl.
Total excl.
VAT
Price incl.
1
Installing an air-to-water heat pump
Technical specifications of the heat pump (mandatory)
3 STILL TO FILL IN
Area heated by the heat pump (m²)
e.g. 120
Seasonal energy efficiency ηs (%)
e.g. 126
Controller class
I
II
III
IV
V
VI
VII
VIII
1.1
Installing an air-to-water heat pump
10 600,00 €
11 183,00 €
1.1.1
Air-to-water heat pump 14 kW
1,00
U
3600,00
3 600,00 €
5,5%
3798,00
B
I
U
Heat output +7 °C / +35 °C: 13.00 kW. Heat output -7 °C / +60 °C: 10.10 kW. Seasonal space heating efficiency (35 °C / 55 °C): 150 % / 117 %.
1.1.2
Heat pump fitting and commissioning
1,00
U
7000,00
7 000,00 €
5,5%
7385,00
Add a line
2
External wall insulation (EWI)
2.1
External wall insulation (EWI)
22 500,00 €
23 737,50 €
2.1.1
Polystyrene insulation, R of 3.7 m².K/W or above
120,00
M2
120,00
14 400,00 €
5,5%
15192,00
2.1.2
Insulation labour package
120,00
M2
75,00
9 000,00 €
5,5%
9495,00
Discount
-900,00 €
8 545,50 €
Quotes
Equipment, labour and accessories come from the works plan, VAT applies line by line, grants are deducted from the amount due and the mandatory wording is already written: the quote goes out for signature without a proofread.
Remote design
Remote design
From your desk, qualify the home, sketch the project and give the customer a dependable first estimate before the site visit: you only travel for the projects that are worth it.
FAQ
Browse the answers to the most frequent questions. And if needed, our team is here to help.
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Yes: heat loss and the heating demand are calculated to EN 12831-1, from the outdoor design temperature of the municipality.
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