Conversion · not a tank swap
Tankless water heater installation in Aurora
A tankless heater is a different appliance, not a thinner tank. The quote has to survive gas or electrical capacity, the vent, condensate, and the manufacturer's instructions. Aurora will not guarantee the inspection day, and this guide will not promise an energy saving.
What has to be true before the unit is ordered
Ask whether the gas meter and the pipe can feed the input the manufacturer lists, or whether the electrical circuit can. Ask where the vent will terminate and whether the old tank's atmospheric flue can be reused. Many tankless vents cannot. Ask where condensate will drain, because a condensing unit makes water the old tank did not. Ask how many showers and appliances the sizing assumes. If any of those answers are "we'll see after we open the wall," the price is not finished.
Elevation changes how some gas appliances are rated. This draft did not review a citywide derating table or a hardness report for Aurora, and it will not invent either one. The contractor should apply the installation manual for the model, at the address, and show you that page. A percentage saved on a proposal, with no manual behind it, is not a local fact.
Permits, and the city you are actually in
Inside Aurora, use the permit guide. The City's same-day inspection offer is for replacement heaters when a licensed contractor and the homeowner can both be there, and the City may still come another day. A conversion that changes venting or gas load is a weak candidate for "same as the old tank." Confirm that with the Building Division rather than assuming the one-stop habit of a different city.
Castle Rock is explicit: tankless heaters require plan review, the manufacturer's specification sheet, and gas piping load calculations. A tank heater there may avoid that review. Do not bring Castle Rock's worksheet to an Aurora counter, and do not skip it on a Castle Rock house because an Aurora page did not mention it. Centennial lists a residential water heater on its one-stop schedule. Read that city's page before you treat a Centennial address as Aurora.
If you already own a tankless unit that is faulting, you do not need an installation. Use tankless repair. If you want another tank, use tank replacement.
Questions to settle first
Is tankless just a smaller replacement?
No. The water is heated as it flows, so the gas or electrical supply, the vent, and often a condensate drain have to match the new unit. A quote that reuses the old flue and the old connector without checking the manual is guessing. Ask for those three items in writing before you compare prices.
Will I save a set percentage in Aurora?
This guide will not say so. No Aurora water-hardness study or altitude derating table was reviewed for a citywide claim. Savings depend on how you use hot water and on the unit's manual. Ask the contractor to show the manufacturer's sizing page for your elevation and fixtures, not a metro average.
Does Aurora guarantee a same-day inspection for a conversion?
No. The City's same-day language covers replacement heaters when both the contractor and the homeowner are present, and staff may still defer the visit. A tankless conversion can add review the tank swap did not. Ask the Building Division which path this submittal is on. Do not put a guaranteed inspection time in the contract.
What if the house is in Castle Rock?
The Town requires a plan review for tankless heaters and asks for the manufacturer sheet plus gas piping load calculations. That is not the Aurora process. Use the Castle Rock page for a house inside that town, and do not assume a tank-heater shortcut covers the tankless unit.
