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Holtop Weekly News #26
Italy Places 25ºC Limit on Public Building Cooling Italy has implemented an energy rationing initiative called ‘Operation Thermostat’ from May 1, 2022 until March 31, 2023. In schools and other public buildings in Italy, the air conditioning must be set at 25ºC...Read more -
Musings on HVAC — Various Advantages of Ventilation
Ventilation is the exchange of the inside and outside air of buildings and reduces the concentration of air pollution indoors to maintain human health. Its performance is expressed in terms of ventilation volume, ventilation rate, ventilation frequency, etc. Contaminants generated in or brought i...Read more -
Russian market of heat and energy recovery ventilators
Russia has the largest amount of land area in the world, and the winter is frigid and chilly. In recent years, people have become more aware of the importance of a healthy climate indoors, and often point out the heat problems that are experienced during the winter. Ventilation is however often ...Read more -
The role of heating, ventilation, and air-conditioning in virus transmission, including SARS-CoV-2
The outbreak of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was first detected in Wuhan, China, in 2019. SARS-CoV-2, which is the virus responsible for the coronavirus disease 2019 (COVID-19), was characterized as a pandemic by the World Health Organization (WHO) in March 202...Read more -
EPA Announces the “Clean Air in Buildings Challenge” to Help Building Owners and Operators Improve Indoor Air Quality and Protect Public Health
Today, as part of President Biden’s National COVID-19 Preparedness Plan released March 3rd, the U.S. Environmental Protection Agency is releasing the “Clean Air in Buildings Challenge,” a call to action and a concise set of guiding principles and actions to assist buildi...Read more -
Ventilation: Who Needs It?
As new building codes standards lead to tighter building envelopes, homes are requiring mechanical ventilation solutions to keep the indoor air fresh. The simple answer to the headline of this article is anyone (human or animal) living and working indoors. The larger question is how we go about p...Read more -
Air pollution: even worse than we thought
All substances that can make the air quality worse are air pollutants. There are natural factors (such as forest fires, volcanic eruptions, etc.) and man-made factors (such as industrial emissions, domestic coal combustion, automobile exhaust, etc.). The latter is the m...Read more -
Ventilation Guidelines For Design
The purpose of the guidelines (Blomsterberg,2000 ) [Ref 6] is to give guidance to practitioners (primarily HVAC-designers and building managers, but also clients and building users) in how to bring about ventilation systems with good performances applying conventional and innovative technologies...Read more -
130th Canton Fair News
Forum promotes green growth Canton Fair set to better serve nation’s carbon peaking and neutrality targets Date: 2021.10.18 By Yuan Shenggao A forum on the green development of China’s home furnishing industry closed on Sunday at the venue of the 130th China Import and Export Fair being held i...Read more -
Review of existing residential ventilation standards
Backdrafting may cause comfort and IAQ problems People spend the majority of their time in residences (Klepeis et al. 2001), making indoor air quality an increasing concern. It has been widely recognized that the health burden of indoor air is significant (Edwards et al. 2001; de Oliveira et al.2...Read more -
Indoor air quality and health
OVERVIEW OF POLLUTANTS IN HOMES THAT HAVE BEEN MEASURED Hundreds of chemicals and pollutants have been measured in the indoor residential environment. The goal of this section is to summarize existing data on what pollutants are present in homes and their concentrations. DATA ON CONCENTRATIONS OF...Read more -
Customer-oriented, Holtop Awarded Five-Star After-Sales Service Certification
HOLTOP has been awarded the five-star after-sales service certification by a strict audit by the certification authority. The five-star after-sales service certification is based on the “Commodity After-sales Service Evaluation System” standard (GB/T27922-1011), which is certified by ...Read more
