New Gas Water Heater
We supply Rheem, A.O. Smith, or Bradford White tanks in 40, 50, or 75 gallons, sized to your household. The tank comes with a 6- to 12-year manufacturer warranty, and we register it for you.
Licensed, code-correct installs with same-day hot water restored
Gas Water Heater Installation Littleton CO Done Right the First Time
When your old tank quits, you need Gas Water Heater Installation Littleton CO homeowners can count on. We pull the permit, run the gas and venting to code, and haul the old unit away. Whether you're in Ken Caryl or near Downtown Littleton, our licensed plumbers install Rheem, A.O. Smith, and Bradford White tanks sized for your home. Most jobs finish in two to four hours, and you get hot water back the same day.
Careful work. Honest options.
About this service
Gas Water Heater Installation Littleton CO: What the Job Actually Involves
Gas Water Heater Installation Littleton CO is the licensed removal of your old tank and the code-compliant hookup of a new gas-fired unit, including gas valve, thermocouple, venting, expansion tank, and pressure relief valve. We start by shutting off the gas and water, draining the old tank, and checking the shutoff and sediment levels. Then we set the new heater, connect the gas line, solder or press the water connections, and test every joint. The whole job usually runs two to four hours for a standard 40- or 50-gallon tank.
Most Littleton homeowners call us when the tank starts leaking, the pilot light won't stay lit, or the water never gets hot enough. Our hard Front Range water leaves scale and sediment behind, which shortens tank life and drives up gas bills. If you need gas water heater replacement services near Littleton, we can often schedule a same-day gas water heater installation Littleton Colorado appointment and have you back to normal before dinner.
- ✓ Same-Day Hot Water
- ✓ Code-Correct Permits
- ✓ Right-Sized for Your Home
- ✓ Old Tank Hauled Away
What's included
What's Included in a Gas Water Heater Installation
Every install we do includes the essentials: the new tank, permit, labor, code-compliant gas and venting connections, testing, and haul-away of the old unit. Add-ons like expansion tanks, venting upgrades, or a pan with a drain line are quoted upfront if your home needs them.
Permit and Inspection
We pull the plumbing permit from the City of Littleton or Arapahoe County, schedule the inspection, and meet the inspector on site. You get a signed-off permit for your records.
Gas and Venting Hookup
We connect the gas valve, thermocouple, and igniter, then run and seal the flue to Uniform Plumbing Code. Every gas joint gets leak-tested with a pressure gauge before we light the pilot.
Expansion Tank and T&P Valve
We install or reuse a code-required expansion tank and a new pressure relief valve. These protect the tank from excess pressure and are required on closed plumbing systems in Littleton.
Old Tank Haul-Away
We drain, disconnect, and remove the old unit, then recycle it. No extra disposal fee, no tank sitting in your garage for a month. The work area gets swept clean before we leave.
Testing and Walkthrough
We fill the tank, bleed the air, light the pilot, and check for leaks. Then we set the thermostat to 120°F and walk you through the warranty, anode rod schedule, and annual flush.
How it works
Our Gas Water Heater Installation Process
We ask about your current tank size, fuel type, household size, and whether you're seeing leaks or no hot water. That lets us quote a realistic range and load the right unit. Most calls take five to ten minutes, and we can often book same-day.
Our licensed plumber checks the gas line size, venting route, shutoff valves, and clearance. We confirm the new tank fits and that the flue meets Uniform Plumbing Code. You get a firm price before we start, not a surprise invoice after.
We shut off the gas and water, drain the old tank, and disconnect the gas valve, thermocouple, and water lines. If the shutoff is seized or the drain valve is clogged with sediment, we replace it. Prep usually takes 30 to 45 minutes.
We set the new heater, connect the gas valve and thermocouple, solder or press the water lines, and install the expansion tank and pressure relief valve. Venting gets pitched and sealed to code. This is the longest step, usually 60 to 90 minutes.
We fill the tank, bleed the air, light the pilot, and check for gas leaks with a multimeter and pressure gauge. Then we set the thermostat to 120°F and walk you through the warranty, anode rod schedule, and how to flush sediment each year.
STEP 01Phone Assessment
We ask about your current tank size, fuel type, household size, and whether you're seeing leaks or no hot water. That lets us quote a realistic range and load the right unit. Most calls take five to ten minutes, and we can often book same-day.
Tools & methods
Tools and Methods We Use on Every Gas Install
Pipe Wrench and Tube Cutter
Used to disconnect old gas and water lines and cut new pipe to length. Clean cuts mean fewer leaks and a faster, tighter install.
Soldering Torch
For copper water line connections. We sweat joints to a leak-free seal and pressure-test every one before we refill the tank.
Multimeter and Thermostat Tester
We test the thermocouple, gas valve, and thermostat to confirm what's failed. That's how we avoid replacing parts that are still good.
Anode Rod Socket
Used to pull and inspect the anode rod during install and tune-ups. A healthy rod is the single biggest factor in tank lifespan.
Pressure Gauge
We check incoming water pressure and test gas joints for leaks. If pressure is over 80 psi, we recommend a pressure-reducing valve.
Inspection Camera
Lets us look inside the flue and behind the tank without tearing out drywall. Useful in tight Littleton closets and historic homes.
Real results
Before and after.
Gas Water Heater Installation
Leaking 40-Gallon Tank in Ken Caryl
A 12-year-old 40-gallon tank was leaking from the bottom, and the homeowner was mopping up water every morning. The shutoff valve was seized, and the flue had a rusted draft hood.
After: We installed a new 50-gallon A.O. Smith with a new brass shutoff, expansion tank, and code-correct flue. Hot water was back in three hours, and the old tank was recycled the same day.
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Gas Water Heater Installation
Undersized Tank in Governor's Ranch
A family of five kept running out of hot water by the third shower. The existing 40-gallon tank was only six years old but undersized for the household, and the thermostat was set to 140°F to compensate.
After: We installed a 75-gallon Bradford White with the correct first-hour rating and set the thermostat to 120°F. The family now has hot water for five showers back-to-back, and gas use dropped noticeably.
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Gas Water Heater Installation
Unpermitted Install in Historic Downtown Littleton
A 1920s bungalow had a water heater installed by a previous owner with no permit and incorrect venting. The buyer's inspector flagged it two weeks before closing.
After: We pulled the retroactive permit, corrected the flue to Uniform Plumbing Code, added an expansion tank, and passed inspection in one visit. The sale closed on schedule.
Book this service → Problems we solve
Problems Our Gas Water Heater Installation Littleton Service Solves
Most of our install calls start with one of these four problems. Here's what's happening and how we fix it.
Ask a pro →Tank is leaking from the bottom
We shut off the water and gas, drain the tank, and install a new unit the same day. If the leak has already caused damage, we flag it so you can call your insurance before it spreads.
Pilot light won't stay lit
We test the thermocouple and gas valve with a multimeter. If the tank is under 8 years old, we repair it. If it's older and showing other wear, we quote a replacement.
Sediment buildup and popping sounds
We flush the tank and check the anode rod. If the tank is still solid, a flush and new anode rod can add years. If it's too far gone, we install a new unit with a maintenance plan.
No hot water at all
We diagnose the failed component and repair it if the tank has life left. If the tank is 10 years or older, we'll show you the numbers on repair versus replacement so you can decide.
Proof you can check
Licensed, Certified, and Reviewed in Littleton
- Colorado Master Plumber License · State of Colorado
- NATE Certification · North American Technician Excellence
- EPA Lead-Safe Certified · U.S. Environmental Protection Agency
- Backflow Prevention Certification · State of Colorado
- OSHA 10 · Occupational Safety and Health Administration
Most standard 40- or 50-gallon gas installs in Littleton run $1,200 to $2,400 in 2026, including the tank, permit, labor, and haul-away. Tankless units and venting upgrades push the range to $3,500 or more. If you're comparing quotes, ask whether the permit and expansion tank are included, because those add $150 to $400.
A standard tank swap takes two to four hours from arrival to hot water. If we need to upgrade venting, replace a seized shutoff, or add an expansion tank, plan on five to six hours. We schedule most installs in a single visit and test everything before we leave.
Yes. The City of Littleton and Arapahoe County require a plumbing permit for gas water heater replacement, and the work must pass inspection. We pull the permit for you and meet the inspector on site. Skipping it can void your homeowner's insurance and cause problems when you sell.
Rheem, A.O. Smith, and Bradford White are the three we install most in Littleton. Rheem and A.O. Smith offer strong warranties and easy parts availability; Bradford White is a solid choice for tighter closets. The right pick depends on your household size, venting, and budget, and we'll walk you through it.
Ready when you are
Get Your Gas Water Heater Installation Littleton CO Quote Today
Call now and we'll give you a straight answer on cost, timing, and whether you need a repair or a full replacement. Licensed plumbers, permits handled, same-day service available across Littleton and Arapahoe County.
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Request an appointment
Contact Littleton Plumbing Solutions
Call us at +1 303-879-0886 or send an email to info@littletonplumbingsolutions.com. We answer the phone 24/7 for emergencies and book regular service Monday through Friday. Most calls get a same-day slot, and we will give you a real arrival window, not a four-hour block.
Call anytime+13038790886Email the officeinfo@waterheaterrepairlittleton.com
Office hoursOpen 24 hours · 7 days a week