Pick a time that works for you and confirm instantly. If it’s urgent, grab the next available slot.
Tip: Booking online is the fastest way to get help — no waiting on hold.
Ready for endless hot water?
John The Plumber specializes in tankless water heater installation and repair in Ottawa — including Rheem, Navien, Rinnai, and all major brands. Our licensed technicians ensure your system is properly sized, safely installed, and running at top efficiency.
Whether you’re upgrading an old tank or fixing a heater that’s not performing, we offer upfront pricing, fast scheduling, and reliable tankless expertise — trusted in Ottawa since 2006.
Longer showers, no waiting — hot water when you need it.
Save on utility bills with high-efficiency tankless systems.
Proper installation for maximum performance and safety.
Quick turnaround to get your home upgraded right away.
Compact units free up room in your utility space.
Thousands of happy homes and 5★ reviews citywide.
Upgrade to endless hot water with a high-efficiency tankless system. We help you choose the right model for your home and handle the full installation — including gas, venting, and setup — so performance and safety are guaranteed. Enjoy more comfort with lower energy costs.
Tankless Water Heater Repair Ottawa
No hot water? Error codes? Inconsistent temperatures? Our licensed Ottawa plumbers diagnose and repair tankless water heaters fast — with parts on hand for same-day fixes on most brands. We’ll restore comfort and performance right away.
If your tankless system isn’t heating properly, don’t wait. We provide expert repair service to keep your unit running efficiently while extending its lifespan. Honest pricing and fast response citywide.
Water Heater Installation Ottawa
Thinking about switching from a tank? We install all major tankless models in Ottawa. Our team ensures gas lines, ventilation, and electrical requirements are handled correctly for safe, reliable operation.
Upgrade your home with endless hot water and lower utility bills. We install and service tankless water heaters sized for your household’s needs — delivering comfort, efficiency, and space savings with expert setup and clean workmanship.
Offices, restaurants, rentals — hot water matters. Our licensed Ottawa plumbers install reliable tankless systems that keep your operation running without interruptions, while improving energy efficiency and reducing downtime.
★★★★★“We upgraded to a tankless system and couldn’t be happier. Fast install and great explanation of how everything works!”
★★★★★“Our old heater quit — John The Plumber installed a new tankless the same day. Awesome service and clean work!”
★★★★★“Endless hot water is a game changer. Highly recommended for anyone thinking of upgrading!”
Thinking about going tankless?
Now’s the best time to upgrade — and save!
Book any tankless water heater installation or repair in Ottawa today and get $40 off your first service. Our licensed team installs top brands and ensures proper venting, gas connections, and performance from day one.
⚡ Fast scheduling • Expert installation • Endless hot water
📞 Call now or book online — limited-time offer for new Ottawa customers!
For nearly 20 years, John The Plumber has installed and serviced tankless water heaters across Ottawa, Nepean, Barrhaven, Kanata, Orleans, Stittsville, and surrounding communities.
Our certified team knows the homes, fuel setups, and plumbing codes unique to the Ottawa area — ensuring safe installation and the best performance for your household.
🚚 Trusted tankless experts serving every corner of Ottawa.
Since 2005, John The Plumber has been Ottawa’s trusted choice for energy-efficient hot water upgrades. Our team specializes in tankless water heater installation, repair, and maintenance — ensuring reliable hot water and long-term savings.
We believe in honest pricing, clean workmanship, and service that puts homeowners first. Whether you’re replacing a failing tank or upgrading for better efficiency, we deliver tankless systems designed to perform for years.
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Yes! We install and service Rheem, Navien, Rinnai, Bosch, and more — with proper setup for gas, venting, and electrical requirements.
Absolutely. We’ll assess your home’s fuel lines, ventilation, and water demand, then recommend the right tankless model for a smooth upgrade.
Yes — when properly sized. We help you choose a system that supports multiple showers, appliances, and hot water needs at once.
A quality tankless water heater can last up to 20 years with proper maintenance — often longer than traditional tanks.
Yes! Get $40 off your first tankless installation or repair in Ottawa — mention the promo when booking or redeem it online.
We’re licensed, insured, and highly experienced with tankless systems — ensuring safe installations, efficient performance, and fast, friendly service.
