Ventilation System Annual Running Costs | EnviroVent

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Annual Running Costs of Units

From your product group, use the drop down menus to view annual running costs by room or by setting

£0.2703/ kWh (per kilowatt hour) for electricity, inclusive of VAT, from 1st April 2025.

All running costs are estimated and based upon the defined conditions. Actual running costs will vary based upon installation and environmental conditions.

Extractor Fans

Calculations are based on 22 hours per day on the standard trickle setting & 2 hours per day on the boost setting.
The installation is assumed to be through wall with 500mm of Ø100mm rigid ducting with EnviroVent louvered grille without a flyscreen.
Power use can vary depending on installation setup.
If the fan is set to Trickle plus or Variable rates, running costs may be higher.

ECO dMEV

Calculations are based on 22 hours per day on the standard trickle setting & 2 hours per day on the boost setting.
Installation has been assumed to be using the SAP in room & through wall ducting configurations with Ø100mm rigid ducting or Ø90mm semi-rigid ducting with an EnviroVent louvered grille without a flyscreen.
Power use can vary depending on installation setup.

Cyclone 7 & Cyclone 8

Setting	Total Annual Cost
Bathroom Trickle (9l/s)	£9.27
Bathroom Boost (33l/s)	£9.27
Kitchen Trickle (11l/s)	£12.43
Kitchen Boost (52l/s)	£12.43

Infinity NB & Filterless NB

Setting	Total Annual Cost
Bathroom Trickle (9l/s)	£9.27
Bathroom Boost (33l/s)	£9.27
Kitchen Trickle (11l/s)	£12.43
Kithchen Boost (52l/s)	£12.43

Filterless Fan

Setting	Total Annual Cost
Bathroom Trickle (9l/s)	£9.27
Bathroom Boost (33l/s)	£9.27
Kitchen Trickle (11l/s)	£12.43
Kitchen Boost (52l/s)	£12.43

Filterless Infinity

Setting	Total Annual Cost
Bathroom Trickle (9l/s)	£9.27
Bathroom Boost (33l/s)	£9.27
Kitchen Trickle (11l/s)	£12.43
Kitchen Boost (52l/s)	£12.43

ECO dMEV+ (Through Wall) [Rigid Duct]

Setting	Total Annual Cost
Kitchen Trickle (13l/s)	£10.44
Kitchen Boost (16l/s)	£10.44
Wet Room Trickle (8l/s)	£5.45
Wet Room Boost (16l/s)	£5.45

ECO dMEV+ (In Room) [Rigid Duct]

Setting	Total Annual Cost
Kitchen Trickle (13l/s)	£10.87
Kitchen Boost (16l/s)	£10.87
Wet Room Trickle (8l/s)	£5.49
Wet Room Boost (16l/s)	£5.49

ECO dMEV+ LC (Through Wall) [Rigid Duct]

Setting	Total Annual Cost
Kitchen Trickle (13l/s)	£10.28
Kitchen Boost (16l/s)	£10.28
Wet Room Trickle (8l/s)	£5.29
Wet Room Boost (16l/s)	£5.29

ECO dMEV+ LC (In Room) [Rigid Duct]

Setting	Total Annual Cost
Kitchen Trickle (13l/s)	£11.37
Kitchen Boost (16l/s)	£11.37
Wet Room Trickle (8l/s)	£5.68
Wet Room Boost (16l/s)	£5.68

ECO dMEV+ (Through Wall) [Semi-Rigid Duct]

Setting	Total Annual Cost
Kitchen Trickle (13l/s)	£9.79
Kitchen Boost (16l/s)	£9.79
Wet Room Trickle (8l/s)	£5.26
Wet Room Boost (16l/s)	£5.26

ECO dMEV+ (In Room) [Semi-Rigid Duct]

Setting	Total Annual Cost
Kitchen Trickle (13l/s)	£10.29
Kitchen Boost (16l/s)	£10.29
Wet Room Trickle (8l/s)	£5.37
Wet Room Boost (16l/s)	£5.37

Quro (Through Wall) [Rigid Duct]

Setting	Total Annual Cost
Kitchen Trickle (13l/s)	£3.15
Kitchen Boost (16l/s)	£3.15
Wet Room Trickle (8l/s)	£2.28
Wet Room Boost (16l/s)	£2.28

Quro (In Room) [Rigid Duct]

Setting	Total Annual Cost
Kitchen Trickle (13l/s)	£3.71
Kitchen Boost (16l/s)	£3.71
Wet Room Trickle (8l/s)	£2.62
Wet Room Boost (16l/s)	£2.62

Positive Input Ventilation Systems

Loft, Inline & Wall

Power use can vary depending atmospheric conditions, with the heater activate for ~10.5% of the time that the temperature is below 10°C.
The installation is assumed to be with the supplied flexible ducting pulled taught with a 90° bend & the supplied diffuser.
Power use can vary depending on installation setup.

Airsource

Power use can vary depending atmospheric conditions & running mode, with the heater activate for ~10.5% of the time that the temperature is below 10°C.
The installation is assumed to be with the supplied flexible ducting pulled taught with a 90° bend, the supplied diffuser & one meter of Ø150mm rigid ducting.
Power use can vary depending on installation setup.

MIV Loft

Setting	Heater DISABLED Annual Cost	Average Heater ON Annual Cost
1 (15l/s)	£8.52	£57.61
2 (20l/s)	£10.42	£59.55
3 (26l/s)	£12.93	£62.11
4 (34l/s)	£20.13	£69.47

EVF Wall

Setting	Heater DISABLED Annual Costs	Avg Heater ON Annual Cost
1 (9l/s)	£8.54	£57.62
2 (11l/s)	£9.77	£58.88
3 (17l/s)	£10.64	£59.78
4 (20l/s)	£15.82	£65.07

Damp Pro & PIV Loft

Setting	Heater DISABLED Annual Cost	Avg Heater ON Annual Cost
1 (21l/s)	£8.10	£56.35
2 (29l/s)	£9.61	£58.72
3 (38l/s)	£12.43	£61.60
4 (49l/s)	£18.33	£67.63

Atmos Loft

Setting	Heater DISABLED Annual Cost	Avg Heater ON Annual Cost
1 (21ls)	£8.45	£57.54
2 (29l/s)	£10.30	£59.43
3 (38l/s)	£14.40	£63.61
4 (49l/s)	£22.04	£71.43

Atmos Wall

Setting	Heater DISABLED Annual Cost	Avg Heater ON Annual Cost
1 (12l/s)	£9.66	£58.77
2 (15l/s)	£10.66	£59.79
3 (19l/s)	£13.50	£62.69
4 (24l/s)	£18.75	£68.07

Atmos Loft / PIV Inline

Setting	Heater DISABLED Annual Cost	Avg Heater ON Annual Cost
1 (21l/s)	£9.28	£58.38
2 (29l/s)	£13.50	£62.69
3 (38l/s)	£19.61	£68.94
4 (49l/s)	£35.80	£85.49

Atmos Inline Dual / MIV Inline

Setting	Heater DISABLED Annual Cost	Avg Heater ON Annual Cost
1 (15l/s)	£9.38	£58.48
2 (20l/s)	£15.79	£65.04
3 (26l/s)	£25.69	£75.16
4 (34l/s)	£36.65	£86.36

MIV Air Source

(based on 45 days above 25°C, rest of year <19°C)

Setting	Heater DISABLED Annual Cost	Avg Heater ON Annual Cost
1 (19l/s)	£7.77	£58.73
2 (24l/s)	£10.99	£62.98
3 (30l/s)	£17.10	£71.19
4 (36l/s)	£27.06	£84.60

Atmos AirSource & PIV AirSource

(based on 45 days above 25°C, rest of year <19°C)

Setting	Heater DISABLED Annual Cost	Avg Heater ON Annual Cost
1 (22l/s)	£7.94	£58.93
2 (29l/s)	£10.29	£62.08
3 (35l/s)	£13.21	£65.96
4 (43l/s)	£19.18	£73.95

Atmos AirSouce Dual

(based on 45 days above 25°C, rest of year <19°C)

Setting	Heater DISABLED Annual Cost	Avg Heater ON Annual Cost
1 (19l/s)	£7.77	£58.73
2 (24l/s)	£10.99	£62.98
3 (30l/s)	£17.10	£71.19
4 (36l/s)	£27.06	£84.60

Mechanical Extract Ventilation with Heat Recovery (MVHR)

Calculations have assumed 22 hours per day on the trickle speed & 2 hours per day on the boost speed.
Calculations are based on SAP duct & airflow configurations for kitchen plus two & three wet rooms with Ø125mm rigid ducting.
Power use can vary depending on installation setup and internal/ external atmospheric conditions.

heatSava

Calculations are based on 22 hours per day on the standard trickle setting & 2 hours per day on the boost setting.
The figures displayed are for the stated model. Other models may have different running costs.
If the default settings are changed, running costs may be higher.

ESava200

Exhaust Terminal Configuration	Annual Cost
Apartment - Kitchen & Bathroom (21l/s trickle & 29l/s boost)	£41.22
House - Kitchen Bathroom & WC (29l/s trickle & 37l/s boost)	£65.60

ESava250

Exhaust Terminal Configuration	Annual Cost
Apartment - Kitchen & Bathroom (21l/s trickle & 29l/s boost)	£34.72
House - Kitchen Bathroom & WC (29l/s trickle & 37l/s boost)	£58.36

ESava260

Exhaust Terminal Configuration	Annual Cost
Apartment - Kitchen & Bathroom (21l/s trickle & 29l/s boost)	£34.22
House - Kitchen Bathroom & WC (29l/s trickle & 37l/s boost)	£54.26

ESava300

Exhaust Terminal Configuration	Annual Cost
Apartment - Kitchen & Bathroom (21l/s trickle & 29l/s boost)	£33.63
House - Kitchen Bathroom & WC (29l/s trickle & 37l/s boost)	£43.84

ESava400

Exhaust Terminal Configuration	Annual Cost
Apartment - Kitchen & Bathroom (21l/s trickle & 29l/s boost)	£32.21
House - Kitchen Bathroom & WC (29l/s trickle & 37l/s boost)	£43.21

SABIK 350

Exhaust Terminal Configuration	Annual Cost
Apartment - Kitchen & Bathroom (21l/s trickle & 29l/s boost)	£34.71
House - Kitchen Bathroom & WC (29l/s trickle & 37l/s boost)	£46.10

SABIK 500

Exhaust Terminal Configuration	Annual Cost
Apartment - Kitchen & Bathroom (21l/s trickle & 29l/s boost)	£39.10
House - Kitchen Bathroom & WC (29l/s trickle & 37l/s boost)	£49.39

HSA100 all models

Exhaust Terminal Configuration	Annual Cost
Trickle (6.5l/s) & Boost (13l/s)	£17.27

HSA150 all models

Exhaust Terminal Configuration	Annual Cost
Trickle (6.5l/s) & Boost (13l/s)	£14.23

Mechanical Extract Ventilation (MEV)

Calculations have assumed 22 hours per day on the trickle speed & 2 hours per day on the boost speed.
Calculations are based on SAP duct & airflow configurations for kitchen plus two & three wet rooms with Ø125mm rigid ducting.
Power use can vary depending on installation setup and internal/ external atmospheric conditions.

MEV 160

Exhaust Terminal Configuration	Annual Cost
Apartment - Kitchen & Bathroom (21l/s trickle & 29l/s boost)	£9.98
House - Kitchen Bathroom & WC (29l/s trickle & 37l/s boost)	£16.45

MEV 300

Exhaust Terminal Configuration	Annual Cost
Apartment - Kitchen & Bathroom (21l/s trickle & 29l/s boost)	£9.80
House - Kitchen Bathroom & WC (29l/s trickle & 37l/s boost)	£14.20

OZEO

Exhaust Terminal Configuration	Annual Cost
Apartment - Kitchen & Bathroom (21l/s trickle & 29l/s boost)	£15.28
House - Kitchen Bathroom & WC (29l/s trickle & 37l/s boost)	£19.45

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