HEATING & COOLING
Tankless Water Heater Repair, Installation & Maintenance Services in Surrey and Surrounding Areas
On-Demand Water Heater
How Does a Tankless Water Heater (on-demand water heater) Work?
Tankless water heaters, also called instantaneous or on-demand water heaters, work to heat water immediately as it is used instead of storing a full tank of hot water at all times. The tankless water heater unit is compact and hangs on a wall, taking up less space than a regular hot water tank. When a hot-water tap is turned on anywhere in the home, cold water goes into the tankless unit where it is heated immediately by either a gas burner or electric element, then it is fed into the plumbing system and comes out hot at the tap.
Looking to have a tankless water heater installed?
Customer Experience
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Trustindex verifies that the original source of the review is Google. 
Trustindex verifies that the original source of the review is Google. 
Trustindex verifies that the original source of the review is Google. 
Trustindex verifies that the original source of the review is Google. 
Trustindex verifies that the original source of the review is Google. 
Trustindex verifies that the original source of the review is Google. 
Trustindex verifies that the original source of the review is Google. Why Choose John Sadler Plumbing & Heating?
Established in 1976, we bring almost half a century of expertise to every job. Our long history in the community means you can count on a proven track record and a reputation built on trust and high-quality service.
Your work is handled by fully licensed, insured technicians with extensive training and experience. Our team stays up-to-date with the latest industry codes, safety standards, and technology, ensuring every repair or installation is done right the first time.
We are your one-stop shop for all plumbing, heating, and cooling needs. From leaky faucets and drain cleaning to furnace installs and AC maintenance, we do it all – residential and commercial. You won’t need to juggle multiple contractors; our skilled crew can handle every aspect of your building’s comfort systems
When you need us, we’ll be there. Enjoy prompt, reliable service with flexible scheduling to suit your busy day. Have an urgent problem after hours? Our team is on-call and ready to tackle emergency plumbing or heating issues to protect your property. No waiting around and no wondering when help will arrive.
With John Sadler, you’ll always know what to expect. We provide clear, upfront estimates before any work begins – no surprises and no hidden fees. Our friendly professionals will explain your options and never pressure you into repairs or replacements you don’t need. Honesty and transparency are at the core of our customer service.
Your satisfaction is our priority. We stand behind our work 100% and won’t consider the job done until you’re happy. Every project is completed to the highest standard, and we back our repairs and installations with solid warranties for your peace of mindbarrie. If something isn’t right, we’ll make it right – end of story
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We’re proud to be award-winning local experts – voted one of the area’s best service businesses. Our customers have given us an average rating of 4.9 out of 5.0 stars, reflecting our commitment to exceptional service. When you choose John Sadler Plumbing & Heating, you’re choosing a proven team that countless homeowners and business owners trust for quality, professionalism, and value.
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Contact us today to learn more about our plumbing services in Surrey, White Rock & Langley or schedule your appointment. Regardless of your problem, our experience can provide a quality solution. If you have an emergency, please contact us immediately as our certified technicians can help!
What are the Benefits of a Tankless Water Heater (on-demand water heater)?
Green Choice
Traditional hot water tanks use energy constantly to keep the water stored inside hot at all times. A tankless water heater only heats water as you use it. Because a tankless heater can heat water immediately, it does not need to use energy all day every day the way that hot water tanks do, but instead only heats water when you turn on the faucet.
Saves Money
Although tankless water heaters are more expensive to buy than hot water tanks, they will save you money on your energy bill in the long run. This is because they only use energy when hot water is being used, whereas tanks use energy 24/7 in order to store water at a high temperature.
Small-Space Friendly
Many people like tankless water heaters because they take up so much less space than a hot water tank. Generally, you don’t need more than about the size of a broom closet to install your tankless water heater. This makes it a great choice for residents of apartments, condominiums, or houses that do not have a basement.
Unlimited Hot Water
Tankless water heaters give you an unlimited supply of hot water because they heat the water on demand. While conventional hot water tanks can only supply the amount of hot water that fits in the tank at one time, tankless models heat the water immediately as it is being used, so you can take as long of a shower as you want.
Longer Lasting
Tankless water heaters last longer than conventional hot water tanks. This is in part because, without having to store water, there is less likelihood of corrosion. Most tankless models also have replaceable parts, so often you can repair your water heater rather than replace the whole thing when issues arise. With regular professional maintenance, a tankless water heater should stay in good condition for around 20 years.
Tankless Hot Water Heater Installation
Wondering if a tankless heater is the right choice for your home? High-efficiency tankless water heaters and boilers are our specialty at John Sadler Plumbing & Heating. We can help you determine the best option, plus assist with picking the right model and professionally install it in your home. Our technicians have a great deal of experience with all of the major tankless brands, including:
- AO Smith®
- Bosch
- Bradford White®
- Giant®
- GE
- John Wood®
- Navien
- NTI
- Rinnai® (tankless water heaters)
- Rheem® (conventional water heaters)
- ACV Triangle Tube (Smart Tanks)
Tankless Water Heater FAQs
Yes, installing a tankless unit is more complex than replacing a traditional tank heater. It often requires proper venting, gas or electrical adjustments, and should be done by a licensed plumbing professional.
Yes, tankless units are significantly more compact than traditional tanks and can be wall-mounted. Their smaller footprint frees up utility room or basement space for other uses.
Yes, tankless water heaters can work with well water, but water quality matters. Mineral content may require additional filtration or maintenance to prevent scale buildup inside the unit.
Yes, tankless water heaters are generally more energy-efficient because they only heat water when needed. They avoid the energy waste associated with keeping a large tank of water hot all the time, which can lower utility bills.
Contact us now to get a quote
Contact Us to Get a Quote
Service Area
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Surrey
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North Delta
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Cloverdale
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Ocean Park
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Panorama Ridge
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Fleetwood
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Whalley
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Fort Langley
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Brookswood
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Murrayville
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Abbotsford
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Clayton
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South Surrey
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Morgan Creek
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Guildford
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Newton
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Fraser Heights
- Walnut Grove
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Willoughby
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Aldergrove
Hours
Monday – Friday 8:30 AM – 5:00 PM
Methods of Payment
