While they last longer than tank-style water heaters, they are more costly to install and often require upgrading your gas line. Learning how to install a tankless water heater is a difficult and sometimes dangerous process.

Is it hard to install tankless water heater?

Tankless water heaters cost more than traditional tank water heaters; typically about twice the price for the unit alone, depending on what flow rate is needed. Theyre also more difficult to install, as they have special venting requirements and often need larger gas lines because of the higher BTU rating.

How do you hook up a tankless water heater?

6:1010:50How to Install a Tankless Water Heater | Ask This Old HouseYouTubeStart of suggested clipEnd of suggested clipSuggested clip · 60 secondsIt. Comes in here the hot water goes the other way back and connects onto your plumbing system.MoreIt. Comes in here the hot water goes the other way back and connects onto your plumbing system. Right. Heres an important safety valve this is a temperature. And pressure relief valve.

What is the downside of a electric tankless water heater?

Tankless water heaters produce an endless supply of hot water, take up less space, have a lower risk of leaking, are safer, and have a significantly longer lifespan on average. The main disadvantage of tankless water heaters is their upfront cost (unit and installation) is significantly higher than tank-style heaters.