Your New Tankless Water Heater: Key Venting Requirements
If you are thinking of installing a tankless water heater, or if you have recently purchased one, it is important that you pay close attention to venting. A unit that is not properly vented can cause your water heater to fail and, even worse, it can be quite dangerous.
The location of the water heater is important. There are advantages to installing it inside the home, close to the kitchen or bathroom. Because they don’t take up much room, you can have one just about anywhere. Installing it outdoors eliminates the risk of carbon monoxide poisoning, but if properly vented, there is no reason not to have it indoors.
Tankless water heater venting is something that should be handled by an HVAC professional, to be sure it is done properly, with the right materials. Some things to keep in mind:
- Make sure that you are using the correct piping material. Most require Category-3 piping.
- Keep the venting run as short as you can. It is more efficient, and will lengthen the life of your system. Check the manufacturers instructions and do not exceed the maximum length.
- Do not tie your tankless water heater venting into any other venting. This is very important. In most cases, you can’t tie your venting into any other venting, such as a stovepipe or a chimney. If you do, you must use the category-3 piping within the chimney, stovepipe or other venting.
- Horizontal venting should slope away from the tank, so that condensation does not run into the unit and damage the heat exchange. If you cannot do that, or if your venting is vertical, you must install a condensate drain within three inches of the vent connection.
When in doubt, consult a professional. Proper tankless water heater venting will extend the life of your unit and is safer. Tankless water heaters are a good investment that will last a long time if properly installed and maintained.
Residents of the Cincinnati area can call Apollo Home Heating, Cooling and Plumbing with questions about tankless water heater venting, installation and repair.
Image via Shutterstock.com
"Ernie & Mike did a superb job on my new furnace and A/C installation. Despite having more than a day’s work to do, they came in and stayed until the job was done. They were organized, efficient, and protected the rest of the house well. Got both furnace and A/C installed the same day. Ernie was courteous, informative, and clearly knew his job better than anyone I’ve encountered before. The units look so good guests now get The Tour of our new system. Apollo is clearly not a fly-by-night company. I would recommend them to anyone in need of a new furnace and/or A/C."
- Jerry A.
"I called Apollo because of a water leak I thought I had in our upstairs shower going into the kitchen. Robbie came and assured me everything was fine & looked at all the other plumbing. He ended up changing a few pipes for our washer & clearing a drain. He was very nice & knowledgeable with all my questions. I ended up signing up for the care plan & was very happy with my service."
- Cassandra B.
"The team at Apollo exceeded my expectations. As a business owner, my attention to the details and commitment to providing excellent service is high. From the sales rep. to the installation team, everyone’s performance was outstanding. For example, the installation team went to great lengths to protect our floors, placing floor runners and across the wood floors and up the stairs. They even were spot washing walls upon their departure. I highly recommend this company."
- Randy B.
"We scheduled an estimate AND a tune-up. We knew something was wrong with our furnace, but hoped we could make it through the rest of the season. Upon telling Bill what our furnace was doing, he warned us immediately what the possible outcome was going to be; a cracked heat exchanger. He watched the flames roll backward, tested carbon monoxide levels, which were so high they meter’s last reading was 5,600 before saying “high”. He immediately shut it down, tagged it, and explained that with levels that high and children in our home he wanted off right away. He continued his inspection and showed us via a camera that not only was it cracked in multiple places, but had holes all over it. He gave us a few options for repairing it; his knowledge as well as genuine concern was beneficial and refreshing. Luckily we also scheduled an estimator, Micah, to come too and we were able to get costs between repairing and replacing (with several options). We decided to replace with a much higher efficiency furnace and one sized properly to our home. Hands down, not only did they both provide us great service and knowledge, but without sounding dramatic, they may have saved our lives. This was our first time calling Apollo, but it won’t be our last."
- Sarah B.
"Apollo is an excellent company. I always receive great service. Alex A. was professional and friendly. He kept me informed during the process of checking my furnace and heat pump to make sure they were working properly. The company makes sure you are notified who is coming and when they are on the way. All my interactions with the company have been wonderful."
- Beverly S.