Water Heater Installation and Replacement in Broomfield: What a Complete Job Includes Before the Old Tank Leaves
Many people assume a replacement is a straight swap of one tank for another. In practice the job includes a permit, venting, a drain pan, shutoff and expansion control, and a decision on size and fuel that you live with for a decade. Knowing what a complete installation covers lets you compare quotes on the same terms. Call our dispatch line to start.
Talk to a water heater installerPlanning a new heater?
(303) 567-7524Share the fuel type and tank size you have now, and the dispatcher hands the job to a plumber who installs heaters.
- Photograph the data plate on the old unit.
- Note whether it sits in a closet, garage or basement.
- Clear a path to the heater.
Same fuel or switch? Gas, electric, hybrid and heat pump water heaters
The simplest swap keeps the same fuel and size, because the gas line, vent or circuit is already in place. Changing fuel opens up more work, so it is worth deciding before the old tank is drained.
| Type | What it needs | Worth knowing |
|---|---|---|
| Gas tank | A gas line with a shutoff (see gas line installation and repair when the line must be extended), a vent to the outside and air for combustion | Recovers quickly; venting must be sized and sloped correctly |
| Electric tank | A dedicated circuit and a clear spot for the tank | Simple to place; slower to recover after heavy use |
| Hybrid (heat pump) electric tank | A circuit, air space around the unit and a condensate drain | Uses less electricity but needs room and cools the space around it |
| Point-of-use or undersink unit (undersink water heater installation) | A nearby outlet and a short supply line | Suits a single distant sink, not a whole house |
| Tankless | Gas or large electric supply, venting and often new piping | See tankless water heaters for the decision in full |
Switching from gas to electric, or the reverse, can involve an electrician or a gas pipe plan as well as a plumber. Ask for the full list of trades before you accept a quote.
Size, venting, pan and expansion tank: what to expect in the scope
Two quotes can differ widely simply because one lists the extras and one leaves them out. Use this list to compare like with like.
- Size. Pick the tank by the number of people and how many fixtures run at once, not by the gallons of the old tank, so size is a fresh decision. A first-hour rating on the label shows how much hot water a unit delivers in a busy hour.
- Venting. A gas unit needs a vent that rises correctly, is sealed at joints and clears combustion air. A power-vent or direct-vent model changes the pipe run and the wall it exits through.
- Drain pan and discharge line. A pan with a drain catches a slow leak, and the relief valve discharge pipe must end where water can be seen and will not scald anyone.
- Expansion tank. On a closed water system, heated water expands and pressure rises. An expansion tank absorbs that so the relief valve is not constantly tested.
- Shutoff and connections. New flexible connectors or a new shutoff valve cost little next to the damage from reusing a tired one.
- Haul-away. Ask whether the old unit leaves with the crew.
Heater, furnace and air conditioner installs in Broomfield also need smoke alarm verification, so ask whether your plumber handles that check on the day.
The permit, the license and who may do the work
Broomfield’s Building Division requires a permit for every water heater, whether it is new or a replacement. A tank to tankless change also needs a gas pipe plan. Ask the plumber who pulls the permit and when the inspection happens.
The state’s guidance, set out in a December 2025 memo from the State Plumbing Board, says a domestic water heater must be installed or replaced by a licensed plumber working for a registered plumbing contractor, with a permit and an inspection. A later addendum notes that homeowners may do the work themselves on their own residence, as long as the home is not for sale, resale, a flip or a rental.
The city also licenses plumbing contractors itself, so check the plumber’s state credentials and any city contractor license before the first visit. License details for the assigned plumber are available on request.
State Plumbing Board memo, dated 2025-12-03, and its addendum, read 2026-10-31.
Want a written scope for the replacement?
Give the dispatcher your fuel type, tank size and location. The plumber who calls back can list what the job includes before you commit.
Same-day replacement: what to have ready
When the heater has failed and the tank is leaking, speed matters. Same-day replacement depends on stock and demand, and the dispatcher tells you what is possible before a plumber is sent. These steps shorten the visit.
- Photograph the data plate. The model, capacity and fuel type tell the plumber what to bring.
- Shut off the supply. Close the cold inlet valve, then cut the power or shut the gas control.
- Clear the area. A plumber needs floor space, and a wet tank is heavy.
- Note the vent and the pan. A picture of the flue and what sits beneath the tank saves a second visit.
- Decide on fuel and size. A change takes longer than a like for like swap.
If you are still deciding between mending and replacing, the page on mending a failing heater sets out how a plumber decides.
Replacing two water heaters, or one that serves more than a house
Some homes and small buildings run two units, often in parallel to supply a large tub or a second floor. Replace them as a pair when they are the same age, because the second tends to fail soon after the first, and plan the order of work so you are never without hot water for long.
Each unit falls under the same permit rule, so ask whether one permit covers both. Landlords and property managers replacing heaters across several units should read our page on commercial plumbing, because rental properties are outside the homeowner exception.
Installation and replacement questions
Should I choose gas, electric, hybrid or a heat pump water heater?
Keep your current fuel unless there is a reason to change, because gas lines, vents and circuits are already in place. A heat pump unit uses less electricity but needs air space, while gas recovers faster. A plumber can tell you what your utility room allows.
How do I choose a water heater installer or company?
Check the credentials, find out who pulls the permit and get a written scope. Compare quotes on the same list of items, not on the headline number.
Do I need a plumber for water heater installation?
Under the State Plumbing Board’s guidance, yes, a licensed plumber with a registered contractor, a permit and an inspection. A homeowner may do the work on their own residence if it is not for sale, resale, a flip or a rental. Gas and venting make a mistake costly, so many owners hire it out.
Can you replace two water heaters at once?
Yes, where the plumber has the units and time. Each heater needs a permit under Broomfield’s rule, so ask whether one permit covers both and how the work is sequenced.
Ready to replace the old tank?
Say what you have now and what you would like to change. Whoever takes the job confirms the scope before any work starts.
Call (303) 567-7524