
What Is a Tankless Water Heater?
A tankless water heater heats water only when needed. Instead of storing hot water, the unit heats cold water instantly as it flows through the system. This on-demand process provides consistent water temperature and eliminates standby energy loss.
- Delivers hot water on demand
- Eliminates tank storage
- Improves energy efficiency
- Reduces risk of water damage

Tankless Water Heater vs. Tank Water Heater
Traditional tank water heaters store hot water and can run out during heavy use. Tankless systems heat water instantly, providing endless hot water for faucets, showers, and appliances.
- Tank water heater: Limited capacity, shorter lifespan
- Tankless system: Hot water on demand, longer lifespan
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Gretchen KennellyTrustindex verifies that the original source of the review is Google.
Scott and crew are exactly that, trustworthy. I had a wonderful experience with them after we had a pipe burst with 4” of water living in our crawl space. Scott fixed the problem and I’m thankful now I have a plumber I can rely on!Posted on Google![]()
Robyn EidelsonTrustindex verifies that the original source of the review is Google.
Scott and his team have been the most amazing, helpful, considerate plumbers I’ve ever worked with. He’s quick to respond, very reasonably priced, and has helped us out with last minute emergencies multiple times. We can’t recommend his services enough!Posted on Google![]()
Peter KTrustindex verifies that the original source of the review is Google.
I highly recommend their services! Scott was ncredibly responsive, punctual, and offered a very reasonable price. We couldn't be happier with the experience.Posted on Google![]()
EdwardTrustindex verifies that the original source of the review is Google.
Scott was really responsive and helpful when we needed a plumber on short notice. Highly recommend!Posted on Google![]()
Sher SherTrustindex verifies that the original source of the review is Google.
Scott helped us again! We love that he is an honest expert, and highly responsive even in the late hours. Plumbing issues can be so stressful—especially when others repeatedly missed the issue with our main line, but Scott diagnosed and solved it perfectly the very first time. Finding an honorable professional you can trust is so special! We highly recommend!Posted on Google![]()
Tracie SimmTrustindex verifies that the original source of the review is Google.
Excellent service! Very friendly couple.Posted on Google![]()
Hank HughesTrustindex verifies that the original source of the review is Google.
Pipe burst and came in with an immediate fix !Posted on Google![]()
Troy WeberTrustindex verifies that the original source of the review is Google.
Great customer service and quality work. Was super responsive when I reached out and was able to do the work same day. On time and excellent communication. 10/10.Posted on Google![]()
Dorette AmirTrustindex verifies that the original source of the review is Google.
Scott has helped me with my clogged sink, very efficient and gets the job done ✅Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Gas vs. Electric Tankless Water Heaters
Tankless water heaters are available in electric units and tankless gas water heater models. The best option depends on your home’s gas supply, electrical panel capacity, and hot water demand measured in GPM.
- Tankless gas water heater: Higher BTU output, supports multiple fixtures
- Electric tankless water heater: Compact size, requires significant electrical supply
- Fuel types: Natural gas or propane
Professional Installation vs. DIY
DIY tankless water heater installation often leads to code violations, improper venting systems, electrical hazards, or gas supply issues. Local building codes require precise installation to protect homeowners.
Professional installation ensures:
- Proper gas line or electrical connections
- Correct venting system installation
- Safe shut-off valve and check valve placement
- Pressure relief valve compliance
- Warranty protection
Step-by-Step Tankless Water Heater Installation Process
- Evaluate water supply lines and water pressure
- Confirm gas supply or electrical panel capacity
- Remove the old water heater or old unit
- Install the new unit and mounting bracket
- Connect cold water and hot water lines
- Install sediment trap and check valve
- Set water temperature and test water flow

Installation Requirements and Local Codes
Tankless installation must meet local codes and building codes. Requirements vary depending on gas supply size, venting system design, electrical connections, and power supply.
- Gas line sizing and BTU capacity
- Electrical supply and breaker requirements
- Vent pipe clearances
- Condensing unit drainage
Energy Efficiency and System Lifespan
Tankless water heaters are highly energy efficient and typically last longer than traditional tank water heaters. With professional installation and maintenance, systems often exceed a 20-year lifespan.
Tankless Water Heater Installation Cost
Tankless water heater installation cost depends on fuel type, electrical upgrades, gas supply modifications, venting system requirements, and home improvement needs. While upfront costs are higher, energy savings and longevity provide long-term value.
Benefits of Tankless Water Heater Installation
- Endless hot water
- Improved energy efficiency
- Reduced water damage risk
- Compact design
- Reliable hot water temperature
Schedule Tankless Water Heater Installation
Upgrade your home with reliable on-demand hot water.
Contact Trustworthy Plumbing to schedule professional tankless water heater installation today.
Please read our reviews to learn what our customers think about our plumbing services.
Tankless Water Heater Installation FAQs:
Costs vary based on gas or electric systems, venting requirements, electrical upgrades, and home layout.
Installation requires plumbing, gas, and electrical expertise. Professional installation is recommended to meet local codes.
Yes. Properly sized tankless systems deliver continuous hot water based on GPM demand.
Rheem and other leading manufacturers offer reliable tankless systems with strong warranties when professionally installed.
Electric units often require panel upgrades. Gas systems may need gas line modifications.
