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Our service is second to none as our experienced staff install your heat
recovery ventilation system to the highest possible standard. Our installations
are installed using rigid ducting throughout in accordance with best practice so
the maximum benefits are achieved from your heat recovery ventilation system.
Our employees install your ducting in accordance with spec WD144 so the highest
standards are achieved in installation procedures.
Key Benefits
- Smooth inner surface providing less air resistance
- Increased energy efficiency with easier airflow
- Better joint sealing to ensure no leaking.
Here's some general
info to look at when choosing a heat recovery ventilation system. In terms of
choosing the best system. There are two main attributes to be aware of. The
first is to ensure that the installation is done using rigid
ducting as this is best practice for better efficiency of air flow. When using
rigid ducting there are two methods which are used one is where large 6 and 5
inch ducting is used to branch out into each room. The second method
is to use a plenum box where the air enters this box and an individual line is
sent from the box to each room in the house. I use the main artery method which
is very time consuming in installation but has the effect of using
much less ducting which means less air resistance and thus I believe a more
efficient system. There is also less turbulence and therefore less noise and
more control of air. The second attribute is to get the unit which has a good
spec and a good
track record. All of the up to date units will boost efficiency of 90% or above,
anything under that I believe is best kept away from. The second factor to look
at is the power consumption of the unit. This is done by an
independent testing company which gives each unit an energy rating. http://www.sap-appendixq.org.uk
The results for each unit is posted on this site. Probably best give me a shout
if you're looking at the results or just ask for them from each quote as the
list can be confusing. The unit which I am recommending is the vent-axia
sentinel kinetic plus
which has a rating of 0.5w/l/s. Which basically means that to supply a litre of
air per sec the unit will use 0.5watts of power.(so the lower the numeric value
the better) The other important factor to note are the sound levels coming from
the
unit. These values should be got from an independent testing body and for the
unit I suggest, it has sound levels of 24db running at 30% and 34db running at
50%. If you want a further explanation on this data feel free to call me. I will
also upgrade the unit and add on the summer bypass system and an inbuilt
humidity sensor. The humidity sensor allows the unit to kick into a boost speed
automatically when it detects moisture allowing for the unit to be self
controlled and doing away with the need to boost the system when having showers
which produce excess moisture. The summer bypass gives you more temperature
control of your house. An
internal damper is activated when the outside temperature is less than the room
temperature. The damper opens allowing cooler fresh air to bypass the Heat
Recovery Cell and reduce the internal temperature towards the pre-set ‘Comfort
Temperature’.Also when the inside temperature is colder than outside the damper
valve kicks in allowing your home to be heated.
If you want to email me a set of drawings I'll get a quote done out for you.
Any queries please don't hesitate to call me.
Regards Karl
083-0023939
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