Hot Water Solutions
Tank & Tankless Water Heaters in Tulsa, OK
A reliable supply of hot water isn't a luxury. It's a necessity. Whether you need a fast replacement for a failing tank or you're ready to upgrade to tankless, Mark Hill's technicians deliver quality equipment and precise installation.
Navien® Tankless Installation • Tank Replacement • NATE-Certified Technicians
Featured Tankless Water Heater
Navien® NPE Series
Condensing efficiency up to 0.96 UEF
Heat or Chill, Call Hill
Out of Hot Water?
No Hot Water? Call Hill.
Leaking, inconsistent or aging tank? Mark Hill provides fast, clean water heater replacement across the Tulsa metro, so your family is back to hot showers without delay.
Tanks & Tankless
Premium Hot Water Solutions for Your Tulsa Home
Whether you need a rapid replacement for a failing traditional hot water tank or are ready to upgrade to a state-of-the-art tankless system, our technicians deliver quality equipment and precise installation.
We don't just swap out equipment. We find the right hot water solution for your home's needs, your household and your budget.
Know the Warning Signs
Signs It's Time to Replace Your Water Heater
Water heaters rarely fail all at once. If your current tank is leaking, inconsistent or aging out, it's worth planning a replacement before you're left with a cold shower or water on the floor.
Not sure whether to stay with a tank or go tankless? We'll look at your setup and walk you through both options.
Dependable & Cost-Effective
Traditional Hot Water Tanks
For dependable, cost-effective performance, today's traditional hot water tanks are built better than ever. We install high-recovery, energy-efficient tanks that make sure your family has hot water when they need it.
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High-Recovery Tanks
Tanks that reheat quickly after heavy use, so back-to-back showers and loads of laundry are not a problem.
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Energy-Efficient Models
Newer tanks are built to waste less energy keeping water hot, which helps keep monthly utility bills in check.
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Seamless Replacement
If your tank is leaking, inconsistent or aging out, our team replaces it cleanly and gets your hot water back without delay.
The Ultimate Upgrade
High-Efficiency Tankless Water Heaters
Never run out of hot water again. Tankless water heaters heat water on demand, giving you an endless supply while freeing up floor space and cutting the energy wasted keeping a full tank hot.
Because we only install the best, we feature Navien's industry-leading condensing technology. When you choose Mark Hill to install a Navien tankless system, here's what you get:
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Elite Energy Efficiency
Why pay to heat water you aren't using? Navien NPE models reach a Uniform Energy Factor (UEF) of up to 0.96, for maximum heat transfer and lower utility bills.
02
Clean, Flexible Installs
Condensing technology allows venting with standard 2" PVC up to 75 feet, so our technicians can create a clean installation in almost any home.
03
Cost-Effective Retrofits
Navien units run on standard 1/2" gas lines up to 24 feet, which in most homes means no expensive, invasive gas line upgrade.
04
Room to Scale Up
For large homes or high-demand properties, up to 32 units can be cascaded with Navien Ready-Link® to work as one high-volume system.
Compare Your Options
Tank or Tankless: Which Fits Your Home?
Both are good choices for the right home. Here's a quick look at how they compare.
| Traditional Tank | Navien® Tankless | |
|---|---|---|
| How it heats | Keeps a full tank of water hot around the clock | Heats water on demand as you use it |
| Hot water supply | Limited to the size of the tank | Endless supply when sized correctly |
| Efficiency | Efficient newer models available | Condensing efficiency up to 0.96 UEF |
| Space | Floor-standing tank | Compact, wall-mounted unit |
| Upfront cost | Lower | Higher, with lower operating costs |
| Best for | Fast, budget-friendly replacement | Families that run out of hot water and want long-term savings |
Planning an Upgrade?
Ask About Financing Your New Water Heater
Moving to tankless doesn't have to mean paying for it all at once. Ask our team about financing options when you schedule your consultation, and we'll give you an upfront estimate before any work begins.
The Mark Hill Difference
Trusted HVAC Experts Tulsa Since 1967
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Honest, Upfront Estimates
You approve the number before we start. No overtime surprises, no pressure to buy more than you need.
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Trane® Comfort Specialist
Oklahoma's No. 1 Trane® dealer, with techs certified on the equipment we install.
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NATE-Certified Technicians
Every tech on our trucks is background-checked, drug-tested, and NATE-certified.
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Family Owned, Locally Operated
Serving the Tulsa metro since 1967. Not a franchise, not a call center.
What We Do
What Tulsa Homeowners Are Saying About Mark Hill
Frequently Asked Questions, Answered
Water Heater FAQs
Quick answers about tank and tankless water heaters for your Tulsa home.
How do I know if I need a new water heater?
Common signs include water pooling around the tank, rusty or discolored hot water, running out of hot water sooner, rumbling noises and a tank that is 8 to 12 years old or more. A Mark Hill technician can look at your water heater and recommend the right next step.
Is a tankless water heater worth it?
For many homes, yes. A tankless water heater heats water on demand, so you don't run out, it takes up far less space and it doesn't waste energy keeping a full tank hot. It costs more upfront than a tank, so we'll help you weigh the long-term savings for your household.
How long do tank and tankless water heaters last?
Most traditional tank water heaters last about 8 to 12 years. Tankless water heaters typically last longer, often around 20 years with regular maintenance.
Can a tankless water heater use my existing gas line?
Often, yes. Navien NPE models are designed to run on standard 1/2" gas lines up to 24 feet, which in most homes eliminates the need for an expensive gas line upgrade. We will confirm your gas line and venting during your consultation.
How is a Navien tankless water heater vented?
Navien condensing models can be vented with standard 2" PVC pipe up to 75 feet. That flexibility lets our technicians find a clean installation location in almost any home.
Can tankless keep up with a large home?
Yes, when it is sized correctly. For larger homes and high-demand properties, multiple Navien units can be cascaded together with Ready-Link® to work as one high-volume system.
Do you still install traditional tank water heaters?
Yes. We install high-recovery, energy-efficient tank water heaters and provide fast replacement when your current tank is leaking, inconsistent or aging out.
How do I schedule a water heater consultation?
Call (918) 258-8855 or fill out our contact form. We will talk through your hot water needs and give you an upfront estimate before any work begins.
Schedule Water Heater Service in Tulsa
Demand the Best for Your Home
Don't settle for subpar installations or run-of-the-mill equipment. Contact Mark Hill Heating & Air today to schedule a consultation, and let our team design a hot water system built to last.