Same-day water heater replacement and repair throughout Denver. Tank and tankless. Licensed master plumber. Flat-rate pricing with no hidden fees.
Water heater replacement in Denver costs $900 to $2,500 installed. Tank units run $900 to $1,700 depending on size. Tankless water heaters cost $1,800 to $3,500. Apex Plumbing completes most replacements same day with a 2-year labor warranty on all work.
Water heater replacement in Denver typically costs $900 to $2,500 installed. A 40-gallon tank water heater replacement runs $900 to $1,400. A 50-gallon tank costs $1,100 to $1,700. Tankless units range from $1,800 to $3,500 depending on the system capacity and gas line requirements.
Apex Plumbing's pricing includes removal and disposal of your old unit, all permits where required, and a 2-year labor warranty. We give you an exact price before we start — no surprises when the invoice arrives.
Traditional tank water heaters in Denver last 8 to 12 years. Tankless water heaters last 15 to 20 years with regular descaling maintenance. Denver's water contains moderate mineral hardness (around 100 to 150 mg/L), which creates scale buildup on heating elements and the tank floor. Annual flushing and anode rod inspection extend tank life significantly.
If your water heater is 10 or more years old and starts showing any signs of trouble — rust in the hot water, water pooling near the base, inconsistent temperatures — replacement is almost always more cost-effective than repair.
The general rule: replace if the unit is more than 10 years old or if repairs would cost more than 50% of the replacement cost. Repair makes sense for units under 6 years old with isolated problems like a faulty heating element ($150 to $300 to fix), bad thermostat ($100 to $200), or pilot light assembly ($100 to $150).
Signs that always mean replacement: corrosion on the tank, sediment cracking sounds, rust-colored hot water throughout the home, or a visibly leaking tank.
A 1 to 2 person household needs a 30 to 40-gallon tank. A family of 3 to 4 should have 50 gallons. Larger households (5+) need 75 to 80 gallons or should consider going tankless. Note that first-hour rating (FHR) matters more than tank size — we size units to your peak morning demand, not just the household count.
For most Denver homeowners who plan to stay in their home 8+ years, yes. Tankless units are more efficient (saving $100 to $200 annually in gas or electric costs), last twice as long, and provide unlimited hot water. The $800 to $1,200 price premium over a tank unit typically pays off within 8 to 10 years.
One consideration specific to Denver: our water's mineral content means tankless units need descaling every 1 to 2 years. We include a maintenance guide with every tankless installation.
| Feature | Tank Water Heater | Tankless Water Heater |
|---|---|---|
| Upfront Cost (Installed) | $900 – $1,700 | $1,800 – $3,500 |
| Lifespan | 8 – 12 years | 15 – 20 years |
| Annual Energy Savings | Baseline | $100 – $200 saved |
| Hot Water Supply | Limited to tank size | Unlimited |
| Space Required | Large footprint | Wall-mounted, compact |
| Denver Maintenance | Annual flush | Annual descale |
We stock the most common water heater sizes (40, 50, and 75-gallon tanks) in our service vehicles, which means most replacements in Capitol Hill, Highlands, Park Hill, LoDo, and Cherry Creek can be completed same day.
For tankless installations and less common tank sizes in Stapleton and Montbello, we typically schedule within 24 hours. All installations include permit filing where required by Denver City code, professional removal of your old unit, and a full functionality test before we leave.
Same-day service available for Capitol Hill, LoDo, Highlands, Park Hill, Cherry Creek, Stapleton, and all Denver neighborhoods. Flat-rate pricing, 2-year warranty.
📞 Call (720) 555-0147 Now