Electric, 1 to 4 GPM
About $1,200 to $1,500 installed. Point-of-use and small homes.
Tankless pricing
Tankless Water Heater Cost Houston
Curious what tankless really costs here? These are typical installed prices, plus what converting from a tank adds.
•Typical price ranges
•Electric and gas ranges
•Upgrade extras explained
Typical prices
Tankless Water Heater Installation Cost by Fuel
Typical installed prices, rising with flow rate (GPM). These are typical figures, not quotes.
Electric, 4 to 7 GPM
About $1,500 to $1,800 installed, plus any panel work.
Gas, 5 to 8 GPM
About $1,500 to $1,900 installed.
Gas, 8 to 11 GPM
About $1,800 to $2,800 installed. Typical whole-house range.
Add-ons
Tankless Hot Water Heater Cost Installed: What Adds Up
A conversion from a tank usually adds one or more of these:
- Larger gas pipe from the meter, or a meter upgrade
- New PVC or stainless venting
- A condensate drain or neutralizer
- Dedicated circuits or a panel upgrade for electric units
- Moving the water heater location
Replacing an existing tankless unit with a similar one costs the least, since the gas, vent and power are already in place.
Long run
Instant Water Heater Cost vs a Tank
A typical 50-gallon gas tank runs about $1,300 to $1,900 installed, so a gas tankless conversion can cost more upfront once add-ons are counted. A tankless unit often lasts about twice as long and wastes no energy keeping stored water hot.
Whether that pays back depends on how long you stay and how much hot water you use.
Ready to compare? Get a quote for your actual setup.
Call (832) 783-9416Permits
Permit and Inspection
A City plumbing permit is required for water heater installation and replacement in Houston, TX, pulled by a master plumber registered with the City. Ask whether the permit and inspection are included in the quote, so quotes compare fairly.
Saving money
Ways to Keep the Price Down
A few choices lower the total:
- Mount the unit near the existing gas line and vent path
- Choose an outdoor model where indoor venting would be long
- Size it to your real peak demand, not the biggest unit sold
- Replace an existing tankless unit like for like when possible
Pricing
Pricing Questions
How much does tankless installation cost in Houston?
Typically about $1,200 to $1,800 for electric and $1,500 to $2,800 for gas, plus any conversion work.
Why are tankless quotes so different?
Gas line, venting and electrical work vary from house to house and drive most of the difference.
Are these prices quotes?
No. Each range is a typical installed price; each contractor sets their own price after seeing the home.
Is the permit included?
Ask. The City of Houston requires a plumbing permit, pulled by a registered master plumber.
Is it cheaper to replace a tankless with a tankless?
Usually, because the gas, vent and power are already sized.
Get a Real Number
Share your current setup, and we'll put you through to a local installer in Houston, Texas. Weighing it against a new tank? See replace water heater with tankless details.