How long does tankless water heater installation take?
Most installations take 4-6 hours. If we need to upgrade your gas line or run new venting, expect 6-8 hours. We complete most installations in a single day.
Serving: Westminster, Thornton, Arvada, Broomfield & Jefferson County
Same-day service7 days a week in Westminster
Choosing a Plumber
Why Westminster Homeowners Choose Tankless Water Heaters
Traditional tank water heaters last 10-15 years and waste energy keeping 40-50 gallons hot around the clock. Tankless systems heat water only when you need it, lasting 20+ years while cutting your water heating costs by 25-35%.
For Westminster homes, that matters. Colorado's cold groundwater means your water heater works harder than in warmer climates. A tankless system handles that demand more efficiently, especially during winter when incoming water temperatures drop to 40-45°F.
Homeowners in Bradburn Village, The Ranch, and Hyland Greens are upgrading to tankless for three main reasons: endless hot water for busy families, lower utility bills, and more space in crowded garages or basements.
Water Heaters
How Tankless Water Heaters Work
Instead of storing hot water in a tank, tankless systems heat water instantly as it flows through the unit. When you turn on a hot water tap, cold water travels through a pipe into the unit where a gas burner or electric element heats it on demand.
This means you never run out of hot water. No more cold showers when someone runs the dishwasher, or timing your showers around laundry day.
Most Westminster homes need a gas-powered tankless system rated at 180,000-199,000 BTUs to handle Colorado's cold incoming water and provide enough flow for 2-3 simultaneous uses. Electric models work for smaller homes or point-of-use applications like a master bathroom.
What you get with Westminster Plumbing
- Licensed & insured Colorado plumbers
- No diagnostic fee, upfront pricing
- Same-day service, 7 days a week
- Camera inspection before we recommend work
- Locally owned, dispatched from Westminster
- Work backed by our satisfaction guarantee
What to Expect
Tankless Water Heater Installation Process
1. Free In-Home Assessment (30-45 minutes)
We evaluate your current water heater setup, measure gas line capacity, check venting options, and calculate your home's hot water demand. You'll get a detailed quote that includes all equipment, labor, permits, and any necessary upgrades.
2. Equipment Selection
Based on your home's size and usage, we recommend the right model. For most Westminster families, that's a Navien NPE-240A, Rheem RTGH-95DVLN, or Rinnai RU199iN. We explain the differences in features, warranties, and performance.
3. Installation Day (4-8 Hours)
Our licensed plumbers handle the complete installation:
- Remove your old tank water heater
- Install the new tankless unit on an exterior or garage wall
- Upgrade gas lines if needed (older homes often need 3/4" lines)
- Install proper venting (stainless steel for condensing models)
- Add shut-off valves and drain valves for maintenance
- Test the system and set the temperature
- Haul away your old water heater
4. System Walkthrough
We show you how to adjust settings, explain the maintenance schedule, and answer any questions. You'll receive warranty information and our service number.
How it works
- 1
Call or book online
Tell us what is going on. A licensed plumber calls you back fast.
- 2
We find the cause
Camera and diagnostic tools show what is really wrong. No diagnostic fee.
- 3
Upfront price
You approve the price before any work starts. No surprises.
- 4
Fixed and tested
We test the repair before we leave and clean up after ourselves.
Same-day service7 days a week in Westminster
Pricing
Tankless Water Heater Installation Cost in Westminster
Complete installation typically costs $3,500-$6,500 depending on these factors:
Equipment: $1,200-$2,500
Entry-level models (140,000 BTU): $1,200-$1,600
Mid-range models (180,000 BTU): $1,600-$2,000
Premium models (199,000 BTU with WiFi): $2,000-$2,500
Labor & Installation: $1,500-$2,500
Standard installation (gas line adequate, easy venting): $1,500-$1,800
Complex installation (gas line upgrade, difficult venting): $2,000-$2,500
Common Additional Costs:
Gas line upgrade (3/4" line from meter): $800-$1,500
New electrical outlet (120V required): $150-$300
Water softener (recommended for Westminster's hard water): $800-$1,800
Permit fees: $150-$250
We provide detailed, upfront estimates with no hidden fees. You'll know the exact cost before we start work.
Need a plumber today?Licensed & insured Colorado plumbers.
Call (478) 780-3030Why Choose Us
Best Tankless Water Heaters for Westminster Homes
Navien NPE-240A (Our Top Recommendation)
199,000 BTU input, 0.97 energy factor
Handles Colorado's cold groundwater efficiently
Built-in recirculation pump (no cold water delay)
15-year heat exchanger warranty
Best for: Families wanting instant hot water at every tap
Price range: $2,000-$2,400 (equipment only)
Rheem RTGH-95DVLN
180,000 BTU input, 0.94 energy factor
Reliable performance in cold climates
Low NOx emissions (cleaner for air quality)
12-year heat exchanger warranty
Best for: Budget-conscious families prioritizing reliability
Price range: $1,600-$1,900 (equipment only)
Rinnai RU199iN
199,000 BTU input, 0.96 energy factor
WiFi-enabled with smartphone control
Enhanced scale detection (important for hard water)
12-year heat exchanger warranty
Best for: Tech-savvy homeowners wanting remote control
Price range: $2,100-$2,500 (equipment only)
All three brands perform well in Westminster's climate and meet Colorado efficiency standards.
Tankless vs Traditional Tank Water Heaters
| Factor | Tankless | Traditional Tank |
|---|---|---|
| Lifespan | 20+ years | 10-15 years |
| Energy Efficiency | 25-35% savings | Baseline |
| Hot Water Supply | Endless | Limited to tank size |
| Space Required | Suitcase-sized | 40-50 gallon tank |
| Upfront Cost | $3,500-$6,500 | $1,200-$2,500 |
| Operating Cost | $200-$300/year | $300-#450/year |
| Installation Time | 4-8 hours | 2-4 hours |
For Westminster families planning to stay in their home 10+ years, tankless systems typically pay for themselves through energy savings and avoided replacement costs.
When Tankless Water Heaters Make Sense
Good fit if you:
Run out of hot water regularly
Have 3+ bathrooms or large soaking tubs
Want to reduce utility bills long-term
Need more garage or basement space
Plan to stay in your home 10+ years
Have teenagers who take long showers
May not be worth it if you:
Live alone or rarely use hot water
Plan to move within 5 years
Have a newer traditional tank (8 years or less)
Can't accommodate gas line or venting requirements
Prefer lower upfront costs
We'll give you an honest assessment during the free estimate. If a traditional water heater makes more sense for your situation, we'll tell you.
Why Choose Westminster Plumbing for Tankless Installation
Colorado-Licensed Master Plumbers
Our installers are licensed, insured, and trained on all major tankless brands. We follow Colorado plumbing codes and pull proper permits for every installation.
Manufacturer-Certified Installers
We maintain certifications with Navien, Rheem, and Rinnai. This ensures you get full manufacturer warranties and our installers stay current on the latest models and best practices.
Upfront Pricing, No Surprises
Your quote includes equipment, labor, permits, and any necessary upgrades. We don't inflate prices after starting work or surprise you with "unexpected" fees.
Same-Day Estimates Available
Most estimates happen within 24-48 hours. We measure your gas line, evaluate venting options, and give you a detailed quote before you commit to anything.
10-Year Workmanship Warranty
Our installation is guaranteed for 10 years. If something goes wrong due to our workmanship, we fix it at no cost. This is in addition to the manufacturer's equipment warranty.
Same-Day Service Support
After installation, you have our emergency number. If your tankless system has issues nights, weekends, or holidays, we respond.
What we do
Common Tankless Water Heater Questions
Do I need to upgrade my gas line for tankless?
Many Westminster homes built before 2000 need gas line upgrades. Tankless units require more BTUs than traditional tanks. During the estimate, we measure your existing gas line and let you know if an upgrade is needed.
Will a tankless water heater work in Westminster's cold winters?
Yes. We install models rated for Colorado's cold groundwater temperatures (40-50°F in winter). Properly sized systems provide endless hot water even when it's 10°F outside.
How much maintenance does a tankless water heater need?
Annual descaling is recommended, especially with Westminster's hard water. We offer maintenance plans, or you can DIY with a descaling kit. The process takes 45 minutes and extends your system's life.
Can I install a tankless water heater myself?
Colorado requires licensed plumbers for gas water heater installations. DIY installation voids manufacturer warranties and creates safety risks with gas lines. Professional installation ensures code compliance and proper performance.
What size tankless water heater do I need?
Most 3-4 bedroom Westminster homes need a 180,000-199,000 BTU unit. We calculate your exact needs during the estimate based on bathrooms, appliances, and simultaneous usage patterns.
Do tankless water heaters qualify for rebates?
High-efficiency models (0.90+ energy factor) may qualify for Xcel Energy rebates or federal tax credits. We provide documentation needed for rebate applications.
Water Heaters
Schedule Your Free Tankless Water Heater Estimate
Ready to explore tankless water heaters for your Westminster home? We'll visit your house, evaluate your current setup, answer your questions, and provide a detailed quote with no obligation.
Most estimates happen within 24-48 hours. Call (478) 780-3030 or schedule online.
Related Services:
Water Heater Repair - Traditional and tankless repairs
Emergency Plumbing - same-day help for water heater failures
Water Filtration - Protect your tankless investment from hard water