Zehnder ComfoAir FLEX 250 Heat Recovery Unit MVHR & Pre-Heater

Zehnder ComfoAir FLEX 250 Heat Recovery Unit MVHR & Pre-Heater
Fastlec

Zehnder ComfoAir FLEX 250 Heat Recovery Unit MVHR & Pre-Heater Zehnder ComfoAir Flex is a ventilation unit that has been specially developed for apartments and smaller homes, where living space

£2,352.23 £1,960.19 ex VAT
Usually delivered within 3 working days

Zehnder ComfoAir FLEX 250 Heat Recovery Unit MVHR & Pre-Heater

Zehnder ComfoAir Flex is a ventilation unit that has been specially developed for apartments and smaller homes, where living space is a valuable resource and needs to be wisely planned.

Installation fits seamlessly in suspended ceilings even in small spaces, thanks to its compact design with minimal dimensions and rotatable spigots, all without sacrificing outstanding performance.

Zehnder ComfoAir Flex is equipped with the quietest fan technology on the market and reduces noise levels to a minimum even during full operation.

It contains features such as its integrated Wi-Fi connection with app control, automatic true summer by-pass, high heat recovery efficiency, and upgradable high-grade filters providing a comfortable, healthy, and energy-efficient indoor climate.

A custom-made heat exchanger and scroll housing ensure a high level of heat recovery while keeping energy consumption low and efficient.

Benefits

  • Make the best of all seasons – Climate Switch technology prevents overheating in summer and leverages heat recovery in winter for the best automatically adjusted indoor climate all year round.
  • Every breath you take – Our enhanced filter concept prevents even the smallest particles from entering your home. You will only breathe in fresh pristine air.
  • Take control – The built-in WIFI connection enables you to control all functions of the unit via the Zehnder ComfoControl app.
  • Quick and easy – Thanks to our commission wizard with step-by-step guidance commissioning has never been that easy.
  • An impressive performance in a compact design with air volumes up to 250 m³/h at an external pressure of 200 Pa to guarantee a comfortable and healthy indoor climate.

Features

  • Wi-Fi enabled as standard for use with the ComfoControl app for IOS or Android.
  • Left or right-hand configuration through software alone, no mechanical alteration required.
  • 100% full and filtered modulating summer bypass.
  • Rotatable spigots for flexibility on duct connections.
  • Commissioning wizard for a quick and simple set-up process.
  • Flow control to maintain commissioned flow rates.
  • Adaptive comfort technology.
  • Automatic passive temperature boost in summer.
  • Humidity boost continuously monitors the humidity level within the home and looks for a man-made spike before boosting the unit, irrespective of distance or dilution.
  • Double dry siphon included to enable an easier installation.
  • Internal pre-heater
  • Tool free filter access.
  • Volt free contact boost capability.
  • 0-10V BMS input.
  • Fire shut down contact.
  • Remote access.
  • Internal pre-heater option.
  • ISO Coarse (G4), ISO ePM10 (M5), and ISO ePM1 (F7) filter options.
  • Passive House certified.

Passive House Certified

The standard requires that only those components that have been rigorously tested and approved can be used within the building. It is imperative when building to a Passive House specification that certified MVHR units are used, as poorly performing, uncertified products that don’t live up to their claims can disrupt the performance of the whole property.

Meeting stringent Passive House standards for quality, performance, and energy efficiency, the Zehnder ComfoAir Flex 250 units have been independently tested and certified by the Passive House Institute ensuring reliable and effective
performance with minimum running costs.

Technical Specification

  • Weight 38 Kg
  • Ducting ø Internal - 160 mm External - 190 mm
  • Condensate connection ø 32 mm
  • Materials Internal EPP / ABS
  • External coated sheet steel
  • Supply voltage 230 V / single-phase / 50Hz
  • Maximum power consumption 119 W / 1820 W
  • Current draw 0.96 A / 8.35 A
  • Fuse rating 3 / 10 amp
  • Specific Fan Power 0.63 W/l/s
  • Heat Recovery Efficiency 0.95
  • IP Rating IP20

Dimensions

Height 327 mm
Width 1061 - 1068 mm
Depth 868 mm

Write Your Own Review
Leave a review about this product
Quality
Value
Price
Rating

UK Delivery:

Orders over £75 - FREE DELIVERY*

Orders under £75 - Delivery £4.95 including VAT

*A very small number of large heavy items may attract an additional pallet charge to certain areas. This charge is calculated based on the overall order value and the delivery postcode area. For example, large oil-filled heaters such as the 'Rointe Radiator Range' cannot be safely transported via standard courier services. Depending on your area, there will usually be a carriage paid order value threshold where FREE delivery can still be attained.

Overseas Customers:

Please feel free to contact us for a price if you would like delivery outside of the UK.

Same Day Despatch On In-Stock Items:

We despatch in-stock items on the same working day when they are ordered before 2PM GMT. You can always contact us after this time to see if it is still possible - we are keen to help where we can. If you need a timed delivery service (Before Noon, 10am, 9am and Saturdays etc) - then please contact us directly for a price.

"Fastlec- They really mean fast, press the enter key on your computer and the doorbell rings.

I have used Fastlec three times each time I have found them to be efficient fast and happy to give you information on their products."

If You Have A Deadline:

Out of stock items will show a 'usual' delivery time on the product page, we will notify you if they are likely to take any longer than this. If you have a deadline then please feel free to contact us by email, phone or fax - we can usually meet it!

Fast and Secure:

Most in-stock items are despatched via traceable and insured carriers on a next-day service.

Domestic Addresses: Our carriers deliver between 7.30am and 6.00pm. If you are not in when the carrier arrives, they will leave a card with instructions on how to arrange re-delivery or collection from your local depot.

Business Addresses: Our carrier will attempt delivery on a working day during normal business hours. If there is no-one to sign for the delivery, a card will be left and the parcel taken to the local depot for collection within one week.

Received Damaged:

Any items being returned as damaged in transit, requiring replacement or refund, should be notified to us, either verbally or in writing, within 24 hours of delivery and must be accompanied by clear photographs showing both the packaging - particularly any damage to the packaging - and also the damaged item(s). The correct paperwork can then be sent and these photographs will ensure that replacements or refunds can then be processed with a minimum of delay.

Storage Heater Deliveries:

Even when purchasing a single heater, it will be delivered on a pallet in an attempt to ensure no damage is caused during transit due to the weight of the unit and also the weight of the bricks to be fitted into the unit on installation. Multiple heaters may even mean multiple pallets. The nature and weight of these items mean a truck fitted with a tail lift is usually required and deliveries can, on occasion, be held up waiting for the availability of specialist transport although this is unusual. 

Today's couriers, due to stringent Health and Safety restrictions, who are employed to deliver your storage heater, are contracted to deliver to the external front of your property only and are not contracted to maneuver these heavy items into your house or to their final locations. The item will be delivered to the door of the outer building if access allows (low-level pump trucks are used to move the pallet, therefore, any steps on the way will make this difficult and will probably mean delivery to the bottom of the steps only).
It is your responsibility to ensure that you have adequate manpower (2 people recommended) to transport your new heater(s) and bricks from the delivery point to its final location without injury or damage to yourself, your new heater, or your property.

These considerations have been carefully designed to implement safe shipping and handling practices that will ensure safe and intact delivery of your heater and safe working practices for the delivery personnel.

If You Have An Item To Return

Please Follow the Instructions Below Depending On Your Circumstances:

1. No Longer Required/Ordered Incorrectly

REQUEST RMA RETURNS AUTHORISATION HERE FOR ITEMS NOT REQUIRED-- Please include your order number/invoice number, full name, and details of the item

Unwanted goods can be returned for a refund. As long as the items are as new, unused, in the original packaging (unmarked and undamaged), and fully ready for re-sale we will happily take them back for a refund (please allow 7-10 working days for refunds). Buyer pays for return carriage. Goods must be returned within 14 days from the date of invoice. Specially altered items (such as cut lengths of cable for example) are non-returnable.

Business to Business (B2B) returns are subject to a 25% handling charge.

We have also negotiated a low price for returns via DPD which you can book here.

2. Received Damaged

REQUEST RMA RETURNS AUTHORISATION HERE FOR ITEMS DAMAGED-- Please include your order number/invoice number, full name, and details of the item and then damage.

Any items being returned as damaged in transit, requiring replacement or refund, should be notified, either verbally or in writing, within 24 hours of delivery and must be accompanied by clear photographs showing both the packaging - particularly any damage to the packaging - and also the damaged item(s). The correct paperwork can then be sent and these photographs will ensure that replacements or refunds can then be processed with a minimum of delay.

a) Click here for a pre-paid postage label* for you to return the unit to us and we will dispatch a replacement upon receipt (please mark the outside of the parcel with "Urgent Replacement Required" so that it can be quickly identified) - *If the parcel is larger than 61x46x46cm or heavier than 20Kg, then please contact us to arrange collection

OR

b) You can purchase an Advance Replacement unit, which we send to you, this allows you to have the units exchanged at your own convenience. Click here for a pre-paid postage label* so that you can then return the damaged unit to us for a refund (against the advance replacement). (The Advance Replacement can simply be purchased online as if you were buying a new unit, then REQUEST AN RMA when ready, to send the faulty unit back)

3. Faulty Unit (within 6 months)** 

REQUEST RMA RETURNS AUTHORISATION HERE FOR FAULTY ITEMS-- Please include your order number/invoice number, full name, full details of the item, details of the fault and whether you would prefer a refund or a replacement.

We understand that when this situation arises it can be a great inconvenience, so after checking with the manufacturer's technical helpline (Most suspected faults can be sorted out over the phone as they result from wiring or setup issues - which is a good thing as it saves you sending the unit back in the first place) we offer the following two options:

a) We can supply a pre-paid postage label* for you to return the unit to us and we will dispatch a replacement upon receipt (please mark the outside of the parcel with "Urgent Replacement Required" so that it can be quickly identified) - *If the parcel is larger than 61x46x46cm or heavier than 20Kg, then please contact us to arrange collection

OR

b) You can purchase an Advance Replacement unit, which we send to you, this allows you to have the units exchanged at your own convenience. We will provide you with a pre-paid postage label* so that you can then return the faulty unit to us for a refund (against the advance replacement). (The Advance Replacement can simply be purchased online as if you were buying a new unit, then REQUEST AN RMA to authorise the return of the faulty unit)

Suspected faulty items are 'tested' prior to refund or replacement.

When Returning ANY Item, Please Include:

  1. A copy of your invoice or order confirmation
  2. Your contact details including address
  3. A clear description of the fault (plus any manufacturer's comments)
  4. Your preference of replacement or refund where applicable (please allow 7-10 working days for refunds)
  5. An RMA reference number (email [email protected] to obtain this)

 

**If a product fails after six months of receiving the item it is considered a warranty claim and is the responsibility of the buyer to pay for the return postage. We will then dispatch a free-of-charge replacement once the original has been received and tested. Book a DPD Return Here

REQUEST RMA RETURNS AUTHORISATION HERE-- Please include your order number/invoice number, full name, full details of the item, details of the fault and whether you would prefer a refund or a replacement.

If the faulty unit is returned within 30 days of receipt, then a refund or replacement can be issued. Faulty items returned after 30 days of receipt cannot be refunded, however, we can provide a replacement.

In some cases, we may offer a partial refund to cover the remaining part of any existing warranty rather than a replacement.

If the faulty unit is returned within 30 days of receipt, then a refund or replacement can be issued. Faulty items returned after 30 days of receipt cannot be refunded, however, we can provide a replacement.

If Fastlec no longer stocks the item, we will refund you the remaining of your warranty

Overseas returns - We are unable to cover the return or re-shipping charges on overseas purchases.

Zehnder ComfoAir FLEX 250 Heat Recovery Unit MVHR & Pre-Heater

Zehnder ComfoAir Flex is a ventilation unit that has been specially developed for apartments and smaller homes, where living space is a valuable resource and needs to be wisely planned.

Installation fits seamlessly in suspended ceilings even in small spaces, thanks to its compact design with minimal dimensions and rotatable spigots, all without sacrificing outstanding performance.

Zehnder ComfoAir Flex is equipped with the quietest fan technology on the market and reduces noise levels to a minimum even during full operation.

It contains features such as its integrated Wi-Fi connection with app control, automatic true summer by-pass, high heat recovery efficiency, and upgradable high-grade filters providing a comfortable, healthy, and energy-efficient indoor climate.

A custom-made heat exchanger and scroll housing ensure a high level of heat recovery while keeping energy consumption low and efficient.

Benefits

  • Make the best of all seasons – Climate Switch technology prevents overheating in summer and leverages heat recovery in winter for the best automatically adjusted indoor climate all year round.
  • Every breath you take – Our enhanced filter concept prevents even the smallest particles from entering your home. You will only breathe in fresh pristine air.
  • Take control – The built-in WIFI connection enables you to control all functions of the unit via the Zehnder ComfoControl app.
  • Quick and easy – Thanks to our commission wizard with step-by-step guidance commissioning has never been that easy.
  • An impressive performance in a compact design with air volumes up to 250 m³/h at an external pressure of 200 Pa to guarantee a comfortable and healthy indoor climate.

Features

  • Wi-Fi enabled as standard for use with the ComfoControl app for IOS or Android.
  • Left or right-hand configuration through software alone, no mechanical alteration required.
  • 100% full and filtered modulating summer bypass.
  • Rotatable spigots for flexibility on duct connections.
  • Commissioning wizard for a quick and simple set-up process.
  • Flow control to maintain commissioned flow rates.
  • Adaptive comfort technology.
  • Automatic passive temperature boost in summer.
  • Humidity boost continuously monitors the humidity level within the home and looks for a man-made spike before boosting the unit, irrespective of distance or dilution.
  • Double dry siphon included to enable an easier installation.
  • Internal pre-heater
  • Tool free filter access.
  • Volt free contact boost capability.
  • 0-10V BMS input.
  • Fire shut down contact.
  • Remote access.
  • Internal pre-heater option.
  • ISO Coarse (G4), ISO ePM10 (M5), and ISO ePM1 (F7) filter options.
  • Passive House certified.

Passive House Certified

The standard requires that only those components that have been rigorously tested and approved can be used within the building. It is imperative when building to a Passive House specification that certified MVHR units are used, as poorly performing, uncertified products that don’t live up to their claims can disrupt the performance of the whole property.

Meeting stringent Passive House standards for quality, performance, and energy efficiency, the Zehnder ComfoAir Flex 250 units have been independently tested and certified by the Passive House Institute ensuring reliable and effective
performance with minimum running costs.

Technical Specification

  • Weight 38 Kg
  • Ducting ø Internal - 160 mm External - 190 mm
  • Condensate connection ø 32 mm
  • Materials Internal EPP / ABS
  • External coated sheet steel
  • Supply voltage 230 V / single-phase / 50Hz
  • Maximum power consumption 119 W / 1820 W
  • Current draw 0.96 A / 8.35 A
  • Fuse rating 3 / 10 amp
  • Specific Fan Power 0.63 W/l/s
  • Heat Recovery Efficiency 0.95
  • IP Rating IP20

Dimensions

Height 327 mm
Width 1061 - 1068 mm
Depth 868 mm

Write Your Own Review
Leave a review about this product
Quality
Value
Price
Rating

UK Delivery:

Orders over £75 - FREE DELIVERY*

Orders under £75 - Delivery £4.95 including VAT

*A very small number of large heavy items may attract an additional pallet charge to certain areas. This charge is calculated based on the overall order value and the delivery postcode area. For example, large oil-filled heaters such as the 'Rointe Radiator Range' cannot be safely transported via standard courier services. Depending on your area, there will usually be a carriage paid order value threshold where FREE delivery can still be attained.

Overseas Customers:

Please feel free to contact us for a price if you would like delivery outside of the UK.

Same Day Despatch On In-Stock Items:

We despatch in-stock items on the same working day when they are ordered before 2PM GMT. You can always contact us after this time to see if it is still possible - we are keen to help where we can. If you need a timed delivery service (Before Noon, 10am, 9am and Saturdays etc) - then please contact us directly for a price.

"Fastlec- They really mean fast, press the enter key on your computer and the doorbell rings.

I have used Fastlec three times each time I have found them to be efficient fast and happy to give you information on their products."

If You Have A Deadline:

Out of stock items will show a 'usual' delivery time on the product page, we will notify you if they are likely to take any longer than this. If you have a deadline then please feel free to contact us by email, phone or fax - we can usually meet it!

Fast and Secure:

Most in-stock items are despatched via traceable and insured carriers on a next-day service.

Domestic Addresses: Our carriers deliver between 7.30am and 6.00pm. If you are not in when the carrier arrives, they will leave a card with instructions on how to arrange re-delivery or collection from your local depot.

Business Addresses: Our carrier will attempt delivery on a working day during normal business hours. If there is no-one to sign for the delivery, a card will be left and the parcel taken to the local depot for collection within one week.

Received Damaged:

Any items being returned as damaged in transit, requiring replacement or refund, should be notified to us, either verbally or in writing, within 24 hours of delivery and must be accompanied by clear photographs showing both the packaging - particularly any damage to the packaging - and also the damaged item(s). The correct paperwork can then be sent and these photographs will ensure that replacements or refunds can then be processed with a minimum of delay.

Storage Heater Deliveries:

Even when purchasing a single heater, it will be delivered on a pallet in an attempt to ensure no damage is caused during transit due to the weight of the unit and also the weight of the bricks to be fitted into the unit on installation. Multiple heaters may even mean multiple pallets. The nature and weight of these items mean a truck fitted with a tail lift is usually required and deliveries can, on occasion, be held up waiting for the availability of specialist transport although this is unusual. 

Today's couriers, due to stringent Health and Safety restrictions, who are employed to deliver your storage heater, are contracted to deliver to the external front of your property only and are not contracted to maneuver these heavy items into your house or to their final locations. The item will be delivered to the door of the outer building if access allows (low-level pump trucks are used to move the pallet, therefore, any steps on the way will make this difficult and will probably mean delivery to the bottom of the steps only).
It is your responsibility to ensure that you have adequate manpower (2 people recommended) to transport your new heater(s) and bricks from the delivery point to its final location without injury or damage to yourself, your new heater, or your property.

These considerations have been carefully designed to implement safe shipping and handling practices that will ensure safe and intact delivery of your heater and safe working practices for the delivery personnel.

If You Have An Item To Return

Please Follow the Instructions Below Depending On Your Circumstances:

1. No Longer Required/Ordered Incorrectly

REQUEST RMA RETURNS AUTHORISATION HERE FOR ITEMS NOT REQUIRED-- Please include your order number/invoice number, full name, and details of the item

Unwanted goods can be returned for a refund. As long as the items are as new, unused, in the original packaging (unmarked and undamaged), and fully ready for re-sale we will happily take them back for a refund (please allow 7-10 working days for refunds). Buyer pays for return carriage. Goods must be returned within 14 days from the date of invoice. Specially altered items (such as cut lengths of cable for example) are non-returnable.

Business to Business (B2B) returns are subject to a 25% handling charge.

We have also negotiated a low price for returns via DPD which you can book here.

2. Received Damaged

REQUEST RMA RETURNS AUTHORISATION HERE FOR ITEMS DAMAGED-- Please include your order number/invoice number, full name, and details of the item and then damage.

Any items being returned as damaged in transit, requiring replacement or refund, should be notified, either verbally or in writing, within 24 hours of delivery and must be accompanied by clear photographs showing both the packaging - particularly any damage to the packaging - and also the damaged item(s). The correct paperwork can then be sent and these photographs will ensure that replacements or refunds can then be processed with a minimum of delay.

a) Click here for a pre-paid postage label* for you to return the unit to us and we will dispatch a replacement upon receipt (please mark the outside of the parcel with "Urgent Replacement Required" so that it can be quickly identified) - *If the parcel is larger than 61x46x46cm or heavier than 20Kg, then please contact us to arrange collection

OR

b) You can purchase an Advance Replacement unit, which we send to you, this allows you to have the units exchanged at your own convenience. Click here for a pre-paid postage label* so that you can then return the damaged unit to us for a refund (against the advance replacement). (The Advance Replacement can simply be purchased online as if you were buying a new unit, then REQUEST AN RMA when ready, to send the faulty unit back)

3. Faulty Unit (within 6 months)** 

REQUEST RMA RETURNS AUTHORISATION HERE FOR FAULTY ITEMS-- Please include your order number/invoice number, full name, full details of the item, details of the fault and whether you would prefer a refund or a replacement.

We understand that when this situation arises it can be a great inconvenience, so after checking with the manufacturer's technical helpline (Most suspected faults can be sorted out over the phone as they result from wiring or setup issues - which is a good thing as it saves you sending the unit back in the first place) we offer the following two options:

a) We can supply a pre-paid postage label* for you to return the unit to us and we will dispatch a replacement upon receipt (please mark the outside of the parcel with "Urgent Replacement Required" so that it can be quickly identified) - *If the parcel is larger than 61x46x46cm or heavier than 20Kg, then please contact us to arrange collection

OR

b) You can purchase an Advance Replacement unit, which we send to you, this allows you to have the units exchanged at your own convenience. We will provide you with a pre-paid postage label* so that you can then return the faulty unit to us for a refund (against the advance replacement). (The Advance Replacement can simply be purchased online as if you were buying a new unit, then REQUEST AN RMA to authorise the return of the faulty unit)

Suspected faulty items are 'tested' prior to refund or replacement.

When Returning ANY Item, Please Include:

  1. A copy of your invoice or order confirmation
  2. Your contact details including address
  3. A clear description of the fault (plus any manufacturer's comments)
  4. Your preference of replacement or refund where applicable (please allow 7-10 working days for refunds)
  5. An RMA reference number (email [email protected] to obtain this)

 

**If a product fails after six months of receiving the item it is considered a warranty claim and is the responsibility of the buyer to pay for the return postage. We will then dispatch a free-of-charge replacement once the original has been received and tested. Book a DPD Return Here

REQUEST RMA RETURNS AUTHORISATION HERE-- Please include your order number/invoice number, full name, full details of the item, details of the fault and whether you would prefer a refund or a replacement.

If the faulty unit is returned within 30 days of receipt, then a refund or replacement can be issued. Faulty items returned after 30 days of receipt cannot be refunded, however, we can provide a replacement.

In some cases, we may offer a partial refund to cover the remaining part of any existing warranty rather than a replacement.

If the faulty unit is returned within 30 days of receipt, then a refund or replacement can be issued. Faulty items returned after 30 days of receipt cannot be refunded, however, we can provide a replacement.

If Fastlec no longer stocks the item, we will refund you the remaining of your warranty

Overseas returns - We are unable to cover the return or re-shipping charges on overseas purchases.

Shop with confidence at Fastlec


Here at Fastlec, we have been selling electrical products online since 2003, so as you can imagine by now we're really getting the hang of it. To prove it, you'll notice that our independent reviews are the best in the industry. We're always trying to think of ways we can improve the service to you.

Does that mean we never get it wrong? Of course not, but in those tiny number of cases, you'll find we pull all of the stops out to put things right for you.

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