
Modern tankless water heaters feature improved heat exchangers, enhanced electronic controls, Wi-Fi connectivity, and superior efficiency ratings up to 0.97 UEF. These technological advances deliver better performance and greater energy savings than older models.
Newer high-efficiency tankless water heaters achieve 0.95-0.97 UEF ratings compared to older models at 0.82-0.90 UEF. This efficiency improvement reduces energy consumption by an additional 8-15% and lowers utility bills by $50-$150 annually beyond your current tankless system.
Modern tankless water heaters include advanced diagnostics, self-cleaning cycles, freeze protection, and enhanced durability that extends equipment lifespan and reduces maintenance requirements.
New tankless water heaters include 10-15 year heat exchanger warranties and 5-year parts coverage, demonstrating manufacturer confidence in product durability and protecting your replacement investment.
Trustindex verifies that the original source of the review is Google. Chad GroverGreat people to deal with whether it’s Peter Sandy or any one they send to the house. Always take the time to show you the problem and never up sellTrustindex verifies that the original source of the review is Google. Gerald GuenettePeter is very friendly and out going. He will make sure everything is good and your happy before he is doneTrustindex verifies that the original source of the review is Google. Patricia TetzlaffNathan was very knowledgeable and professional. You never get better service with any company like you do with Sherwood Mechanical. They do excellent work and stand behind it. Great people to deal with.Trustindex verifies that the original source of the review is Google. Kyle HuberI received a referral for Sherwood Mechanical from a colleague, and I'm very pleased with the service provided (new central AC install). The technicians were quick and polite, the pricing was more than reasonable, and their text message updates were much appreciated so they'd let me know who was coming and at what time. When we need a new furnace, they'll be sure to get my business again.Trustindex verifies that the original source of the review is Google. Caroline PierceHi! I just can't say enough great things about this company! They are reliable and respond quickly to calls! The furnace at my mom's house stopped working and they diagnosed it and replaced the motor on the day and in the time frame they gave us.Trustindex verifies that the original source of the review is Google. T NI had annual maintenance done on my air conditioner. The technicians were very nice and professional. Excellent service. I would definitely call them again.Trustindex verifies that the original source of the review is Google. Daryl LysengMay 19, 2026 Today Peter and Nathan came by to replace the Flame Sensor and ignighter in my Navien and do a maintenance on my Trane Air Conditioner until - and they also readjusted my Trane Thermostat. Peter took the time to explain features of my Navien and the Trane unit and answered every question I had about both systems. I really enjoyed the time they spent here and learned a lot today. November 12, 2025 Brian arrived on time and quickly got to work installing my new Trane XL 850 Thermostat. The installation was a bit tricky because I had run the CAT 6 cable to the wrong side of the thermostat. But Brian was very patient and explained what he was doing the entire way. Brian also answered all of my questions when he serviced my Trane Furnace and my Navien Tankless system In the early Summer, I'm booking him to service my Air Conditioning unit as well.Trustindex verifies that the original source of the review is Google. Colleen FrederickThank you again Sherwood Mech for a new water heater and an air condition clean. Always the best service.Trustindex verifies that the original source of the review is Google. Trish BoneVery professional prompt service! We would definitely recommend Sherwood Mechanical Services to our family and friend's for all your Furnace and Air Conditioning needs! Thanks Peter, Jackson and all your excellent staff! Trish and DougTrustindex verifies that the original source of the review is Google. Barbara MullenGreat full service of my furnace by Peter. I would highly recommend Sherwood Mechanical for the prompt and valuable service.


Certified plumbers assess your tankless heater’s age, efficiency, repairs, and performance, while evaluating hot water needs, gas, electrical, and venting systems to recommend the right replacement.
We identify performance improvements available with modern tankless technology, including enhanced efficiency, advanced controls, Wi-Fi connectivity, and improved reliability features.
Get detailed quotes covering tankless systems, old unit removal, installation, permits, materials, gas, electrical, and venting upgrades—no hidden fees. Clear answers when researching tankless replacement costs.
Tankless water heater installed to code, replacing old unit, upgrading gas, electrical, venting, water lines, and configuring controls advanced performance.
We test gas, water flow, temperature, venting, electrical systems, and safety controls to ensure optimal tankless water heater performance before completion.
We handle permit applications, coordinate gas fitting and electrical inspections, and ensure your tankless water heater replacement meets all safety codes throughout Sherwood Park and surrounding areas.
We register your tankless water heater with the manufacturer, activating comprehensive warranty coverage for complete peace of mind.

Ultra-high efficiency up to 0.96 UEF with advanced condensing technology. Reliable on-demand performance with compact indoor design for continuous hot water delivery throughout your home.

Exceptional efficiency up to 0.96 UEF with integrated recirculation capability. Advanced temperature control delivers instant hot water at every fixture for ultimate convenience and performance.

Superior efficiency up to 0.95 UEF with commercial-grade construction. Powerful wall-mounted design delivers robust on-demand performance for high hot water demands without sacrificing space.

Proven efficiency up to 0.95 UEF with weather-resistant construction. Engineered for exterior installation, freeing indoor space while delivering endless hot water across multiple simultaneous applications.

Tankless water heaters nearing 15–18 years may lose efficiency and need costly repairs; timely replacement prevents failures and ensures reliable hot water.

If repairs exceed half the replacement cost and frequent service is needed, your tankless water heater likely needs replacement.

Rising energy bills despite maintenance indicate poor heat exchanger efficiency; replacing tankless heaters with modern high-efficiency models restores savings.


Loss of simultaneous hot water suggests heat exchanger deterioration; replacing the tankless unit restores flow capacity and continuous hot water supply.

Older tankless models lack Wi-Fi, diagnostics, and efficiency; replacing them improves performance and provides access to modern features and technology.

Heavy scale buildup or heat exchanger corrosion from hard water often makes replacement cheaper; new tankless systems offer improved resistance.


(included with replacement)

Low monthly payments on tankless replacement

Value for your old tankless water heater
Free assessment of modern features
Don’t wait for your tankless water heater to fail when you need endless hot water most. Assess your on-demand water heater now and discover the benefits of modern tankless technology.




