False data It is difficult to measure the product efficiency without tests. The prices of most ERV systems are expensive; therefore, customers should take real-life conditions into consideration. A majority of ERV enjoys quality supply air and most of their data are testified. However, these systems are examined in the lab and in some cases, sensors are even installed in the machines. Hence, they may not be so effective if examined in real-time conditions such as homes and offices. Customers are advised to learn about purification efficiency after ERV installation and choose ERV system in which the detector is detachable (or buy an independent detector) to examine purification efficiency of the whole area. No promises Without any detector or tests in experience shops, the easiest way to pick out an ERV system is to buy one with data guarantee. Keep in mind that we spend money in order to get 24/7 quality air instead of only an ERV system. Quality air is our priority and it is of no use if without data guarantee, whatever sellers tout the system. Minimum noise Energy recovery ventilator manufacturer and the noise is determined by air volume. Many manufacturers boast their minimum noise, which is virtually examined under minimum air volume. Hence, customers are advised to take heed of air volume when checking quotas of air purifiers. Generally the more air volume ERV can handle, the better the system is. However,over-size system has to handle both indoor air and outdoor air and causes noise imbalances, operation overload and excessive costs. Therefore, customer are advised to pick out ERV based on their own requirements.
