家里通风

为什么要给家里通风? 

而CEE则致力于帮助人们使他们的家更节能, 我们也希望人们住在安全的房子里, 健康，室内空气质量好.

According to the Minnesota Department of Commerce’s Division of Energy Resources, “良好的室内空气质量对一个健康的家庭很重要. Proper and efficient ventilation removes unhealthy contaminants (such as smoke from cooking, 沐浴产生的湿气, or combustion products from heating systems) and brings fresh air into the living spaces.” 

首页s without proper ventilation can experience a variety of problems with indoor moisture, 气味, 和污染物. Moisture from cooking and bathing needs to be removed before high humidity levels lead to mold growth or physical damage to the home. 通风过少会让难闻的气味残留. Contaminants like formaldehyde and volatile organic compounds can accumulate and may cause health problems in poorly ventilated homes.

通常, newer or recently air-sealed homes have less natural ventilation from things like gaps and openings around doors, 窗户, 还有房子的基础, 也就是说污染物不会定期从家里冲出去. The issue isn’t that these homes are too “tight” — it’s that they are not “breathing” properly. 机械通风, 以排风机的形式, 使房主能够更好地控制房屋的透气性. 

Watch the following video for a brief explanation of the importance of 绝缘 and ventilation.

 

我应该什么时候给家里增加通风设备? 

Many people add ventilation during an 绝缘 or air sealing project because the air sealing work will restrict how a home breathes. 要求你的隔热承包商在你的工程中包括通风.

如果你已经有了绝缘材料，你需要通风, 通常，保温承包商可以安装一个通风机, 但有些城市需要有执照的暖通空调承包商. If you need help determining the correct installer contact CEE's Energy advisors using the "Ask Us" button below. 

If you would like help determining if ventilation is the right solution for your home, 考虑进行能源审计. 您的公用事业可能提供此服务. 
 

你推荐什么样的通风方式?

对于许多现有的房屋来说，排气系统是一种有效的通风方式. 排气系统只能排出家中的空气, where as balanced systems like those described below both remove air and bring in fresh air from outside. 

CEE recommends that you install an ENERGY STAR-rated bathroom exhaust fan or kitchen range hood that is also rated for quiet and continuous operation. This means the fan can run at a low level all the time and run at a higher level when needed.

A common location for a continuous ventilation fan is the most frequently used bathroom. 它应该取代房间里已有的任何风扇. If a home’s structure doesn’t allow for installation of such a fan in the bathroom, 有时厨房抽油烟机额定连续使用是一种选择.. In most cases, one continuously ventilating fan — either in the bathroom or kitchen — is enough.

The fan installer can set the fan speed depending on the number of occupants or bedrooms and the home’s tightness. Your fan speed is based on these specific conditions to ensure that moisture and indoor air pollutants don’t build up in your home over time. 

The default speed for these fans is typically 30 to 50 cubic feet per minute (CFM). Bathing or cooking will automatically turn it to the higher speed setting for 20 to 30 minutes. The higher speed is typically 50 – 100 CFM for a bath fan and more than 100 CFM for a kitchen fan. 
 

安装要花多少钱? 

Fan installation for an ENERGY STAR continuous operating fan typically costs between $1,100 - $1,600. 
 

我能让我现在的风扇处于“开”状态吗? 

It is not a good idea to leave your current fan on all the time instead of installing a new continuously running run, because the motors are not designed to be left on all the time and may breakdown. 一旦发生这种情况，无论如何你都需要关掉风扇. 此外，老风扇比连续额定风扇声音更大. 
 

一直开风扇要花多少钱? 

我们建议连续运行风扇，24/7. 通过一直运行，风扇可以设置在一个较低，更安静的速度. 以这种方式运行风扇，每年的电费通常为7 - 15美元. 另外, the continuous fan will exhaust a very small amount of already heated or cooled air from the home. 

While this may sound counterproductive at first, adding ventilation is overall very beneficial. It goes a long way toward preventing structural damage to your home and health issues for you and your family, 这两种方法都比增加通风系统要贵. 

如果您添加连续风机作为保温工程的一部分, know that the savings from air sealing and 绝缘 work are typically much greater than the small amount of air the fan removes from the home. 
 

如何调整风扇设置? 

Usually you can change fan settings by removing the grate and adjusting the dials. 通常, one dial will adjust the speed and the other will determine how long the fan will remain on after being triggered by motion or a wall switch. 一些风扇可能有一个外部速度开关，以及.

You can increase the speed of the fan when it is humid inside or when there are 气味 in the home. 在浴室里，如果风扇不能保持房间干燥，它可能会开得更久. 
 

需要什么维护?? 

对于大多数风扇，你应该每年清洗一次烤架和风扇体. Follow the cleaning timeline for your specific model, as outlined by your fan installer.
 

建议的湿度水平是多少?

Moisture from cooking and bathing needs to be removed before high humidity levels lead to mold growth or physical damage to the home.

什么是hrv和erv? 

Heat Recovery Ventilators (HRVs) and Energy Recovery Ventilators (ERVs) are types of ventilation machines, typically tied into the ductwork for the forced air furnace and central air conditioning. The key advantages of both HRVs and ERVs compared to exhaust-only continuous ventilation, are that they can recover heat from the warm air they remove from your home and provide good filtration for allergens.

The main difference between HRVs and ERVs is that HRVs remove humidity from the air stream, 而erv则从气流中恢复湿度. The installation cost of HRVs and ERVs can be two to four times more than a continuous bath fan—usually between $1500 and $2500. 价格不等, so be sure to check with your HVAC contractor for more details on pricing and installation.

考虑到它们更高的安装成本, you should consider an HRV or ERV when a bath fan or kitchen hood fan is not sufficient to ventilate a home and when the home already has ductwork. 通常 this means that HRVs and ERVs are installed in new or extremely well-sealed homes. 

回到家庭能源中心