When it comes to propane tankless water heaters, a major concern is venting, as they generally come along with different needs than traditional water heaters. Propane powered water heaters must be properly ventilated in order to function properly and to ensure the safety of you and your family. Before installing a new propane tank in your home, make sure you know a little about tankless water heater ventilation.
Metal Venting Isn't Always Necessary
Durable metals like aluminum and stainless steel are generally the preferred materials for water heater venting; however, they aren't always necessary. As a general rule, you only need to use metal if you have a non-condensing tankless water heater. Non-condensing units only transfer a fraction of the heat they produce to the water. The rest remains inside the unit where it creates a heated exhaust gas. Since this gas can get quite hot, it must be vented through a metal vent.
On the other hand, if you are using a condensing tankless water heater, just about all the heat is transferred to the water. This in turn reduces the amount of exhaust gas produced and its level of heat, allowing you to get by with a heavy-duty plastic venting system, such as polypropylene or PVC. Since the cost for metal venting can be considerably higher than plastic venting, investigate whether the water heater is a condensing model or not if you want to save money.
Make Things Easier With An Outdoor Installation
If you want to make the installation of your new tankless water heater easier, consider an outdoor installation. Contrary to the belief of many, an outdoor installation isn't only an option for those homeowners who live in warmer climates. Tankless water heaters are designed to be able to withstand temperature variances, including below freezing temperatures, because they are equipped with self-warming heaters that keep the system protected.
Only during periods of extreme cold, such as sub-zero temperatures, will you need to take extra precaution to protect the water heater, such as adding insulation. By installing the water heater outside, you no longer have to worry about ventilation. In addition to absolving you of this added installation expense, an outdoor installation can also help free up space inside your home.
Click here for info about the best methods for ventilation based on the configuration of your tankless water and talk to a technician if you have more questions.