Although still not a common sight, 这种无水式热水器在芝加哥和全国各地越来越受欢迎. For many households, this type of water heater 减少能源使用 and makes life a little more convenient. 尽管无水式热水器有潜在的好处，但并不是每个家庭都适合使用. 在你投资一个之前，花时间比较你个人情况的利弊.
How the Tankless Water Heater Works
Unlike traditional water heaters, which hold hot water in a tank, tankless water heaters don’t store hot water. Instead, they provide hot water on demand. 因此，它们有时被称为按需式或按需式热水器.
当你打开水龙头时，热水器的传感器会计算出用水量. It then draws cold water from your home’s main supply, 计算进入的冷水的流量，以及需要多少电力来提高水到所需的温度. Finally, the system draws the required amount of power. 根据设计不同，无水箱热水器可以使用电、气、丙烷甚至油.
Types of Tankless Systems
Tankless water heaters come in two basic types. The type you choose depends on your home’s design and your family’s needs.
- 全屋加热器 -这些型号足够大，以供应热水的所有应用在房子，包括 水龙头和淋浴, washing machines and dish washers. 如果你的房子比较小，而且通常不会同时使用多个热水设备，那么全屋模式会很好.
- 接入点加热器 — These smaller models are designed for just one or two applications. 例如, 你可以在浴室里安装一个水槽和淋浴器，在厨房里安装另一个水槽和洗碗机. 在大房子, 安装多个热水器可以减少你等待热水到达水龙头的时间. 使用点(Point-of-use)模式在不需要太多热水的情况下也能很好地工作, such as a bathroom in the garage.
When to Consider Going Tankless
他们的能源效率, 易用性, 而灵活性使无水式热水器成为许多家庭和生活方式的良好选择. Consider a tankless water heater if you:
- Want to reduce your water heating bills over the long term
- Often run out of hot water
- 有一个浴室，热水浴缸或其他应用远离你现有的热水器
- Need a booster hot water supply for your dishwasher or washing machine
- Need a backup for your solar water heater
The Benefits of 后果热水器
较低的费用 -节省能源是无水式热水器最受欢迎的好处之一. 安装一个这样的热水器可以减少8%到34%的水加热能源的使用. If you’re currently using an older, inefficient conventional tank water heater, you may save as much as 50 percent.
无限的热水 — Tankless models heat water as they draw it from your home’s main supply. As long as the tap’s on, the hot water will keep coming. Compare that to a tank model that can run out of hot water, leaving you to wait up to an hour for more to heat up.
节省空间的 -无水箱式热水器通常比传统的水箱型热水器需要更少的空间. Most are wall mounted, so they won’t take up floor space. Some are small enough to install in a closet or cabinet.
改进的安全 — No tank means no risk of leaks or floods that could damage your home. Tankless models also reduce scalding risk. 传统的模型设置在高温下，以确保足够的供应和杀死细菌，可以在水箱中积聚. 因为没有储存细菌的水箱，所以无水箱模型可以设置在更安全的105 - 110度.
更少的规模 — Mineral scale deposits are often a problem in areas with hard water. Tankless models are less likely to develop this potentially damaging scale. That said, tankless models often need more frequent preventive water heater maintenance 比坦克模型.
长寿命 — Most storage tank water heaters last only around 10 years. A tankless model has a lifespan of 15 to 20 years.
How a Tankless Water Heater Can Save You Money
无备用能量损耗 —传统储罐中的热水不断地将热量流失到周围的空气中, a problem known as standby heat loss. This happens even if the tank is well insulated. 即使不使用，水也必须不断加热，这样会浪费能源. 因为无水箱式热水器不储存水，所以它们在待机时不会损失热量.
骑自行车少损失 -当热水离开储罐，新的冷水进入时，循环损失发生. 剩余的热水与冷水混合，需要更多的能量来重新加热已经变冷的水. 无水箱热水器只在你使用的时候加热水，所以它们从不浪费能量再加热储存的水.
更有效的位置 — Hot water loses heat as it travels through the pipes. 把热水器安装在靠近水龙头或电器的地方，尽量减少这种能源损失. With a single conventional tank water heater, it’s inevitable that some taps will be relatively far from the water heater. Installing multiple point-of-use tankless water heaters solves this problem.
Why a Tankless System Might Not Be for You
Not all households stand to benefit from installing a tankless water heater. 有些时候，坚持使用传统的系统更划算，也更方便.
更高的购买成本 -燃气或丙烷式无水箱热水器的成本可能高达传统水箱模型的三倍. 在向上的一面，如果您安装的模型的能量因子(EF)至少为0.到2013年底，你将有资格获得300美元的联邦税收抵免 Residential Energy Efficiency Tax Credit. 电 models are cheaper, 但他们不会让你获得税收抵免，因为他们仍然比燃气汽车的能源效率低.
安装的因素 -在一个气体无水箱系统，你将需要不锈钢管道安装排气单元. You may also need a larger gas line installed to supply sufficient fuel. For an electric model, you may need an additional circuit installed.
限制水流量 — Although a tankless water heater can supply a constant stream of hot water, the volume of water it supplies per minute is limited. These models can’t produce a large amount of hot water all at once. 如果你有一个全屋模式，热水是在你所有的应用程序中分配的. 这意味着，例如，打开洗碗机会减少流向淋浴的水量.
A conventional tank model supplies 7.5 to 9.5 gallons of water per minute (GPM), plenty to run several appliances at once. Most tankless models can supply only 2.每分钟5到5加仑. 更重要的是, the colder your ground water, 加热水需要的能量越多，你的流速就会越低. Gas and propane models have higher flow rates than electric models.
潜在的水浪费 — A tankless model heats water quickly, but not instantly. Even if your water heater is right beside the tap, it takes a few seconds to get hot water after you turn on the tap. The heating mechanism is triggered by water flow, 因此，有时你可能不得不打开比你真正需要的更多的水，只是为了确保它加热. Both issues can lead to wasted water.
Sudden temperature changes — With a single whole-house unit, 因为有人打开了另一个房间的水龙头，一个水龙头里的水可能会突然变冷，然后又变热. Installing multiple point-of-use units helps prevent this.
Is a Tankless Water Heater Right for your h888皇冠?
在你决定购买一个无水式热水器之前，先弄清楚你能从中受益多少. To estimate your potential energy savings, 将现有热水器上黄色的“能量指南”标签上的数据与一些无水箱型号的数据进行比较，这些型号可能很好地满足你的需求. If you’re already using a high-efficiency gas-fueled tank model, a tankless model may not save you that much.
你还需要考虑额外的费用，比如安装排气口和升级燃气管道, or adding an electrical circuit. 一旦你知道总购买和安装成本和你的能源节约率, you can calculate payback period.
一个无水式热水器可能正是你所需要的，以降低你的能源账单，并确保你不会再在洗澡中途用完热水. 不过，在某些情况下，你可能更愿意坚持使用传统的坦克模型. 如果你在市场上的一个新的热水器在芝加哥地区，你想要专家指导选择你的系统, 与我们交流 皇冠365app首页 & h888皇冠. 我们将帮助您决定哪种型号的热水器最能满足您的需要.
