How much does it cost to have gas tankless water heater installed?

Costs will depend upon the area of the country you live in and the type of tankless water heater you buy.

Research types and their pro's and con's, then you'll know the cost.

Get three bids from reputable local plumbers, and a handyman that can do plumbing. Then you'll know the instillation cost.

Really just depends what size you are looking for they are listed by GPM(gallons per minute) whether they are whole house or not is when pricing get signifigantly higher and whether you need gas,electric,propane etc., they can supply on demand to 1-2 faucets at a time(less GPM) if you only need smaller one maybe live alone,pricing really jumps if you need additional plumbing or additional electric fixed or added to carry new system; pricing https://www.google.com/search?q=tankless+water+heaters&safe=active&rlz=1C1CHBF_enUS750US750&source=univ&tbm=shop&tbo=u&sa=X&ved=0ahUKEwiJs8q545XgAhWPA3wKHd8wB_UQsxgIvgM&biw=1366&bih=657 definately gets multiple reputable bids on installing because with this being the newer trend prices may be higher especially depending where you live.

The average cost to install a tankless water heater is $1,903, or between$970 and $2,837. The price of this project depends on the model and factors like labor.

Anna, these aren't cheap. They will likely run around $3000 or more. There are some important considerations:

1) the installer should be specially trained by the manufacturer

2) stick with Rinnai or Navien as these have time tested track records

3) you must have adequate natural gas supply. Sometimes it will require a larger gas supply line for the whole house so other appliances don't get starved for pressure.

4) some require a special vent pipe

5) some have a recirculating pump. It is more expensive, but I highly recommend it since it will save you energy later

6) flow is important. A trickle of water will not activate the burner on your water heater. To get hot water, you usually need to turn on the faucet full blast for a few seconds then lower the flow.

Knowing what to expect and how to maintain these is critical. I'm a huge advocate of tankless water heaters, but you need to understand their limitations, have realistic expectations and they must be installed properly to perform optimally.

step 1, use home advisor in your area to find a plumber https://www.homeadvisor.com/sem/category.Water-Heaters.10420.html?entry_point_id=32128433&iv_=__iv_m_b_c_81020277933405_k_25507982299_w_kwd-25507982299%3Aloc-44579_g_1129791073_n_o_e__h_44579_ii__p_2_b_bb_d_c_vi__&kw_id=25507982299&c_id=81020277933405&gatc=bb&msclkid=045308019fd813bfa39354504d4ad457

and this may give more insight too https://www.greenhomeguide.com/askapro/question/what-can-i-expect-to-pay-to-convert-to-a-tankless-hot-water-heater-in-northern-california