söndag 31 maj 2015

Many HVAC Contractors

Many HVAC Contractors are looking for ways to expand and grow your business. It makes sense to consider a service that have good long term potential, a service that compliments your existing services, a service that is not difficult to enter and a service that offers good profitability. The indoor air quality market in general and air duct cleaning in particular is just such a service.

lördag 9 maj 2015


Operatives to carefully remove filters one by one from canopy and place into tank, taking care not to over stack filters. Note: filters can be easily damaged especially Vokes filters.
6  Operatives to let filters in tank soak for a minimum of 10 minutes.
7  After 10 minutes, operatives to remove filters one at a time from solution. Whilst also holding filters over the tank, clean the edges of the filters using a ‘Greenie’.
8  Operatives to place filters into the spray tank and repeat process until spray tank is full.
9  Operatives to spray filters using high pressure jet sprayer in a methodical way (as instructed by supervisor) ensuring that all parts of the facing side of the filter have been sprayed.
10  Operatives to repeat this procedure until completed on each side of filters and then to repeat operation for reverse side of filters.
11  On completion, operatives to place filters carefully in drainage area and allow excess water to drain out.

onsdag 22 april 2015

On completion of cleaning

 On completion of cleaning, operatives to switch off machine and remove plug and RCD from the power socket and recoil machine cable/ lead. Operatives to check cable for any damage while recoiling cable/ lead.
13  Operatives to clean machine and check that pads or discs are not damaged or broken.
14  On completion of cleaning, operatives to dispose of all waste chemicals and materials on site and remove all cleaning equipment, chemicals and signage to company vehicle.
15  Operatives are not to leave the site until authorised by Supervisor.
This Method Statement to be used only to underpin a Full Site Specific Method Statement
Ceiling Cleaning – Stainless Steel – Painted –  False & Clipped Tiles
Applicable to both stainless steel ceilings and painted/false ceilings
1  Operatives to check all PPE, cleaning equipment and chemicals required for the task. Refer to COSHH assessments supplied for chemicals being used. Operatives to set out all ‘Caution/Warning’ signage required and cordon off cleaning area prior to work commencing.

onsdag 15 april 2015

help keep visible

help keep visible mildew from returning. But when mold spores get into the air conditioning system, they can settle in the air conditioning ductwork along with dust and other contaminants. Air conditioning duct systems, especially in Florida's humid climate, can be virtual incubators for microbial pollutants such as mold and bacteria. With the alternating high and low humidity conditions which regularly occur in air conditioning ducts during air conditioner operation, molds will grow, spread, produce spores and distribute the spores throughout a house. Mold contamination in air conditioning ducts poses a serious problem. Inhibiting Mold Growth in Air Conditioning Ducts To effectively prevent conditions that lead to air condition ductwork contamination, two considerations must be made: 1. Keep the ducts free from dirt and spores. 2. Check and repair any leaks in ducts that might introduce dirt and moisture.

fredag 10 april 2015


WHAT TO DO WITH THE RESULTS If the test indicates the leakage is greater than acceptable, the ducts should be sealed, repaired, or renovated (replaced). The threshold is set by the October 2005 Title 24 Building Code, which requires duct leakage to be reduced by 15% of the pre-work leakage found. In every case the closer to zero leakage attained, the better your duct system will perform. Sealing Duct sealing involves following established procedures and applying approved materials to seal air leaks. Locations where sealing is typically performed include the supply and return plenums (which are connected to the furnace cabinet), starting collars (where ducts are connected to the plenums), fittings in the duct runs (Ys, where ducts branch off, and elbows), splices within the duct run, and terminations where the ducts connect to the supply registers. The most important leakage areas are in the supply and return plenums, because these areas are closest to the air handler and under the highest pressures when the system is operating.

måndag 23 mars 2015

To evaluate acoustic pollution

To evaluate acoustic pollution, the sound power emitted by a sound source must be measured. This must be done in such a way that any kind of noise source, regardless of where it will later be used, can be quantified. One of the most accurate methods for measuring the sound power of small and medium sound sources is described in standard EN ISO 3741:1999 “Acoustics. Determination of sound power levels of noise source using sound pressure. Precision methods for reverberation rooms”. Eurovent chose this measurement method for the certification programme for air conditioners.
In 1994, the heat pump laboratory of CEIS (Centro de Ensayos, Innovación y Servicios, S.L.) was selected by Eurovent as an independent laboratory to perform the above measurements. The actual sound power measurements are carried out by the external laboratory UPLA at the Polytechnic University of Madrid.

fredag 13 mars 2015


Discussions. It also made clear that heat pumps are really beginning to break through market and other barriers and that all markets are showing signs of growth. China and Europe are good examples of significantly growing markets. “Heat pumps are where the action is” certainly applies to China with its booming construction sector and HVAC industry. Of course, the success of the conference was also the result of thorough preparation, the excellent location and the participation of over 300 people who came from all over the world.
The status of heat pumps can best be characterised by the diversity in technology, markets and developments. Examples are gas heat pumps, combined heat pumps and thermal storage, advances in CO2 technology for water heating, diversity in system design, and the broadly applied and expanding ground-coupled heat pump markets. New competing technologies are emerging, such as micro-CHP and fuel cells in residences and light commercial applications. There is no single solution available and this provides excellent opportunities for countries to collaborate and learn from each other.