Tankless Water Heater in Greenwood Village, CO

What does the City require for a tankless install?

Greenwood Village Community Development lists water heater replacement and plumbing work among residential projects that require a building permit, applied for through the City's Online Access Portal (303-486-5783). The City also requires plumbers to hold a Greenwood Village contractor license, Level D, or Level E for plumbing contractors pulling permits outside a general contractor. A tankless swap usually involves gas piping and a new vent, so expect both to be checked at inspection. The plumber connected through this page handles the filing.

Which water will the heater see?

That depends on your address. Denver Water serves the City's Total Service area, Southgate Water District serves parts of the City, and Cherry Creek Village Water District covers the area from Belleview Avenue to I-225 between Yosemite and Fulton streets; the City's Water Districts Map shows yours. For Denver Water-supplied areas, the latest report lists total hardness averaging about 105 ppm. That's moderate, which means a tankless heat exchanger should be flushed on the maker's schedule, roughly yearly, and isolation valves are worth adding at install. A softener is optional rather than essential at that level, though some owners add one for other reasons.

Will a larger home need more than one unit?

Sometimes. Greenwood Village is an affluent suburban city, and bigger homes with several bathrooms in use at once can outstrip a single tankless unit, especially in winter when incoming water is coldest. Options include a larger condensing unit, two units linked together, or a second unit near a distant wing. A recirculation loop solves long waits at far fixtures. Gas supply is the limit to check: Xcel Energy supplies gas here, and a large tankless burner, or two, alongside furnaces and fireplaces can call for a bigger line. Because the metro sits about a mile high, the plumber also uses the maker's altitude derating when sizing.

A local note

For new gas service the City's resident checklist points to Xcel Energy at 303-623-1234. For a gas smell, don't call that line first: leave the house, then call 911 and Xcel Energy's emergency number, 1-800-895-2999, from outside.