Ventilation Systems Support – FAQs
Now you know the product or unit type and the model number, you can find specific support information for your situation:
• How does the system work? Download user guides for HRV and CME or watch our video guides for HRV and CME
• How often do the filters require changing?
• Are there different grades of filters?
• Changing filters and where to place different filter grades in my MVHR/HRV unit
• Who can I get to service / maintain the system? See our Preferred installers
• Where do I buy filters from? Visit our online shop, TitonDirect
• How does Summer Bypass work?
• How much power does the system consume?
• Connecting a controller to a MVHR Unit
Should the unit be running all the time?
Yes. These unit are designed to run 24/7,
• For the health and comfort of the occupants.
• To control condensation.
• Remove pollutants.
• Ensure the safe and efficient operation of open-flue appliances.
The amount of fresh outdoor air should match the needs of the dwelling and the people living within it.
N.B. switching the unit off could lead to poor quality air within the building and may affect the fabric of the building and/or your health.
Can I turn the unit down?
The unit should not be turned down as it has been commissioned to meet the requirements within Approved Document F.
N.B. turning the unit down could lead to poor quality air within the building and may affect the fabric of the building and/or your health.
Can I turn the unit up?
The unit can be turned up, the unit will have been commissioned to meet the minimum requirements within Approved Document F, therefore increasing the rates is acceptable. Flow rates may need to be increased for higher occupancy and life styles.
N.B. increasing the unit flow rates may result in an increase in noise.
Should the HRV system help cool my property?
It is important to emphasise that a HRV is a ventilation system and not a cooling system. Summer Bypass will stop heat being recovered but this does not guarantee the ambient temperature in the property will be decreased.
Should the HRV system heat my property
It is important to emphasise that a HRV is a ventilation system and not a heating system. The heat cell with recover approx. 90% of the heat from the outgoing air and pass this heat to the incoming air to minimise heat loss.
Should HRV and CME systems be quiet?
It is inevitably the system will make some noise, as air is being moved by a fan(s) through a ducting system(s) 24/7. The level of noise is likely to vary from property to property. The system should have been designed, installed and commissioned to minimise the noise level.
If the noise is excessive then we would recommend having the system checked, there may be options to reduce the noise.
How often should the filters be changed (HRV only)
The frequency for changing the filters will vary depending upon a number of variables, these being occupancy level, lifestyles, pets, external conditions etc. Typically filters should be changed every 12 months.
N.B. as the filters become blocked the effectiveness of the unit will reduce, until no air is actually moved.
Does the system need maintaining?
HRV
The frequency for maintenance will vary depending upon a number of variables, these being occupancy level, lifestyles, pets, external conditions etc. Typically systems should be maintained every 12 months. This will include:-
• Replacing filters
• Cleaning the inside of the unit, no detergent should be used.
• Hovering the heat cell.
• Cleaning the ceiling terminals.
Periodically the ducting system may need cleaning and the flow rates checked.
CME
The frequency for maintenance will vary depending upon a number of variables, these being occupancy level, lifestyles, pets, external conditions etc.
The ceiling terminals will need regularly cleaning. However the unit will only need dismantling and cleaning approximately every 5 years.
Periodically the ducting system may need cleaning and the flow rates checked.
Should there be a difference in sound between Continuous and Boost Settings?
Not always, the speed difference between Continuous and Boost may not be significant enough to have a determinable sound difference.
Basic Fault Finding
My unit has become noisy
• Has a boost switch been left on?
• Do the filters need replacing (HRV only)?
• Is the unit in SummerBoost mode (HRV only)?
• Has the noise locally to the unit changed? The fans may be failing.
My system changes is speed without the pushing a boost switch
• The unit may be triggering on humidity (where fitted).
• The SummerBypass is active and the unit is in SummerBoost (some MHVR units only)
My unit is now permanently in boost
• Has a boost switch been left on?
• Do the filters need replacing (HRV only)?
My unit has stopped running
• Has the unit been switched off at the mains spur?
• Has the mains fuse blown?
Water is dripping from my unit (HRV only)
• The install of the unit requires checking, it is probable that the ducting is not insulated fully or the condensation drain is not fitted correctly?
• The internal condensation tray is split?
The ceiling around my supply ceiling terminals is getting dirty (HRV only)
• The filters require changing
The air coming into the habitable rooms from the HRV System is cold
• The air may feel cool but in reality is warm, measure the temperature, it should be slightly colder than the air being extracted from the kitchen & wet rooms. Try measuring.
The air within the bathroom or kitchen is no longer clearing or it is taking longer to clear
• Are you using the boost switches?
• Are the filters blocked (HRV only)?
Warranty
How can I claim against the warranty?
- If the unit has been purchased by you directly from Titon then please contact us directly.
- Most units are purchased by an installer appointed by the developer. We provide the purchaser with a warranty. They will then provide the developer and therefore you a warranty for the system. In the event that the unit is felt to be faulty the purchaser must be contacted, in the event they need to claim on our warranty they will then contact us directly.
Supporting documents and videos
Back to Mechanical Ventilation Support page
