Tankless hot water heater installation cost — Boulder, CO
Last updated: September 24, 2026
What affects the price
Replacing a water heater involves several variables that change the final bill. The main factors are the type of unit you choose—like standard tank models versus tankless systems—and the fuel source, whether gas or electric. Installation complexity also plays a role, especially if we need to update venting, gas lines, or electrical wiring to meet current building codes. Relocating a unit or upgrading to a higher capacity will also shift the bottom line.
About this service
The cost to install a tankless system accounts for the unit, pipe rerouting, and potential electrical upgrades. If your home needs a larger gas line to support the unit’s power, the labor price will rise. We assess your home’s current plumbing and energy capacity before starting any work. Exact pricing confirmed free on the call.
Frequently asked in Boulder
What is the cost for a hot water heater in Boulder?
Tell me about Navien tankless water heaters.
What makes a water heater energy efficient?
How do solar water heaters work?
Solar water heaters use the sun's energy to heat water. Panels on your roof capture sunlight and transfer heat to water. This can significantly reduce energy bills. While they require an initial investment, they offer long-term savings. A specialist can assess if a solar system is feasible for your Boulder home.
Can I get a water heater for my RV?
Yes, specialized water heaters are available for RVs. These units are designed for the unique space and power constraints of recreational vehicles. If you need an RV water heater, a qualified specialist can guide you. They can discuss installation and repair options for your mobile needs.
How does a storage tank water heater work?
A storage tank water heater keeps a large tank of water heated constantly. When you open a hot water faucet, hot water is drawn from the top of the tank. Cold water enters the bottom to be heated. These are common but less energy-efficient than tankless models. A pro can advise on the best option for your Boulder home.
What is an 'on demand' water heater?
An 'on demand' water heater is another name for a tankless water heater. It heats water only when you turn on a hot water faucet. This means you never run out of hot water, and it's more energy-efficient than traditional tank models. Pros can explain if this system fits your Boulder home.
Also serving nearby: Longmont · Westminster · Arvada · Thornton · Lakewood
More on this: DOE water heating — efficiency and sizing.
Service area details
Serving all of Boulder — population 105,898; about 3,937 residents per square mile across 26.9 sq mi. ZIP codes covered include 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308.
Neighborhoods served in Boulder: Newlands, Table Mesa, Gunbarrel, The Highlands, Mapleton Hill — and every surrounding area.
Areas we serve
Browse by state, then city.