Describe your job with details to view a tailored list of pros.
Post your job

Find water heater repair pros in Oshawa

Finding a water heater repair pro doesn't have to be a hassle. On HomeStars, you can read real reviews, compare quotes, and book the right person for the job all in one place. Skip the hours of searching and connect with available water heater repair pros in Oshawa stress-free!

Some of our top rated water heater repair specialists in Oshawa

164 Results

Sort by:

    • Best of the Best 2025
    • Best of Awards 2026

    Heating & Air Conditioning MORE THAN 20 YEARS EXPERIENCE IN Install or replace heating systems, FURNACE REPAIR, FURNACE INSTALLATION, FURNACE REPLACEMENT, HEATING SYSTEM INSTALLATION, .CERTIFIED AND INSURED COMPANY.REPAIR AND SERVICE AND INSTALLATION OF ALL HVAC EQUIPMENT FOR RESIDENTIAL SUCH AS FURNACE,AIR CONDITIONER,BOILER,HOT WATER TANK,TANKLESS WATER HEATER,DUCTLESS AIR CONDITIONER,ROOF TOP UNIT,ALL KIND OF FILTER AND ... ________________________________________ FURNACE,AIR CONDITIONER,AIR CONDITIONING,AIR CONDITION,BOILER,HOT WATER TANK,TANKLESS WATER HEATER,DUCTLESS AIR CONDITIONER,ROOF TOP UNIT,FIRE PLACE REPAIR,ALL KIND OF FILTER and Gas Fireplace Services & Repairs Toronto ... _______________________________________ AMERICAN STANDARS , TRANE,CARRIER,GOODMAN,KEEPRITE,NAVIEN,RINAE,COOLMAN,LENNOX,ARMSTRONG,Lennox, Amana, American Standard, Rheem, Rinnai,Napoleon, Noritz,White Rodgers,Honeywell,Oil or Electirc to Gas conversion., Indoor Air Quality testing. Heating, cooling, furnace, gas fireplace, electric fireplace, air conditioner, A/C, indoor air quality, boiler, hot water tank, tankless water heater, duct cleaning, ductless air conditioner, heat pump, custom duct work, humidifier, thermostats, HRV, ERV, hepa filter, indoor air quality, filters, gas line installation, in floor heating, electronic air cleaner, gas stove, service, maintenance, repair, fix furnace, residential, commercial cooling.

    Get in touch
    • Best of Awards 2026
    • Best of Newly Listed 2025

    This family business has been around for over three decades, selling, installing, and providing services. We believe in delivering excellence and our core values centered around Integrity and respect which have been part of our company’s success since our founding in 1996. We carry most major brands but mainly deal with Lennox and we also deal with Kenmore, Goodman, York and Carrier. We specialize in Residential and commercial establishments in the GTA . Our products include packaged rooftop units, split systems, Indoor air quality systems, condensing units, fireplaces, pool heaters, Hot water tanks/Tankless and related equipments.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    Hairoun Mechanical Services provides reliable residential and light-commercial HVAC maintenance, diagnostics, and repair services throughout Hamilton and the Greater Toronto Area (GTA). Licensed & Insured Professional Credentials: • TSSA Registered Heating Fuels Contractor — License #FS-R-53845 • Certified G2 Gas Technician • Ontario College Diploma in Heating, Refrigeration and Air Conditioning from Humber College • Fully Insured with Comprehensive Commercial Liability Coverage With over 6 years of hands-on field experience, we are deeply committed to quality workmanship, honest communication, and dependable service. We specialize in precision troubleshooting, meaning we focus on accurate diagnostic work and repair services rather than trying to push unnecessary equipment installations. Our Core Specialized Services Include: • Boiler & Hydronic Systems: Comprehensive maintenance, troubleshooting, and repairs for high-efficiency boilers (including Navien, Rinnai, and NTI equipment) and radiator heating loops. • Furnace Services: Prompt troubleshooting, safety safety-checks, and repair work for residential forced-air heating systems. • Tankless Water Heaters: Specialized seasonal maintenance, system diagnostics, and deep descaling procedures. • Air Conditioning & Heat Pumps: Full seasonal tune-ups, operational diagnostics, and repair services for central units and ductless mini-split systems. • Gas Line & Fireplace Work: Expert safety verifications, gas valve replacements, leak detections, and gas fireplace maintenance. • Commercial Mechanical Equipment: Specialized maintenance, belt/motor testing, coil washing, and diagnostics for light-commercial Rooftop Units (RTUs) and Makeup Air Units (MAUs). • Fan Coils: Reliable diagnostic and component maintenance service. At Hairoun Mechanical Services, we believe in arriving prepared with top-tier, calibrated digital diagnostic gear. We take pride in explaining technical issues clearly without confusing jargon, offering practical solutions tailored exactly to your budget, and providing absolute transparency from the initial assessment through to job completion. Whether you need seasonal HVAC preventative maintenance, help diagnosing an active heating or cooling issue, or reliable subcontractor support, we are here to deliver top-tier trade professional results. Serving Hamilton and the GTA. Contact Hairoun Mechanical Services today to discuss your HVAC needs and arrange an appointment!

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    Skyline Mechanical Contracting provides HVAC installation and repair for homes and businesses across the GTA air conditioning, furnace installs, and ductwork. With years of hands-on experience on residential and commercial projects, we deliver honest assessments, clear quotes, and reliable, on-time work. Licensed and insured. Whether it's a new AC before summer or a furnace repair before winter, we get it done right the first time.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    We are your expert hvac service provider offering the following: 1. Furnace repair, maintenance and installation 2. AC repair, maintenance and installation 3. Water heater/tankless water heater repair and installation 4. BBQ gas lines installation 5. Pool Heater repair 6. Water softener service and installation 7. Boiler service, maintenance and installation For more information, please do not hesitate to contact us.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    Scarborough-based HVAC and refrigeration experts serving all of Ontario with affordable, reliable service.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    At Energy Wave Solutions, we provide reliable hydronic heating and cooling services, plumbing, and complete system installations across the GTA. With certified G2 licensing from TSSA and licensed plumbing expertise, we ensure your home comfort systems run safely and efficiently year-round. What sets us apart? As a company, we bring together specialized and licensed teams in HVAC, electrical, and plumbing, ready to solve your needs quickly and professionally. From hydronic systems and in-floor heating to furnaces, air conditioners, and plumbing repairs, our experts deliver results you can count on. Beyond installation and repair, we also provide consultation and system design for HVAC, electrical, and plumbing projects. Whether you’re planning a new build, upgrading your comfort systems, or optimizing for energy efficiency, we guide you with tailored solutions that fit your space and budget. Our promise is simple: honest pricing, fast response times, and lasting results. Contact us today for a free quote and experience the difference of working with a contractor who truly cares about your comfort and peace of mind.

    Get in touch
  • Water Heater Repair Specialist in Oshawa
    • Best of Awards 2026

    We are a company that will work with you to achieve your goals, nothing is too small or to big, we’ve have designed to completion of projects We’ve hung picture frame and mirrors. We are a team from design to a selected trades and meticulous taste. Thirty years of experience in construction, ready to deliver. Custom is our standard.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    Moral Maintenance Corp can help you with your install or replace water supply and drainage, unclog drain , install or repair faucets, repair toilet or toilet flush, install or repair bathroom fixtures, stop leakage, build or renovate well, clean or maintain septic tank or grease trap, install, replace or repair sewer main, install or replace drainage system, install or repair water heaters & install or replace garbage disposal request in Toronto and its surrounding cities. They’re at your disposal to listen and assist you in all your projects. Get in touch with Moral Maintenance Corp now to discuss your needs and arrange a quote.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    Avita HVAC is a TSSA-certified G1/G2 Gas Technician and fully insured, incorporated company serving the GTA. With over 15 years of international expertise in mechanical trades, we specialize in high-quality heating and gas solutions. Core Competencies Experience: Our lead technician brings advanced knowledge in system design, blueprint reading, and flawless project execution—ensuring we tackle complex jobs that others can't. Services: Installation, repair, and annual maintenance for Furnaces, Tankless Water Heaters, A/C units, and gas piping. We work on all major residential and light commercial brands. Skills: Expertise in advanced diagnostics, high-efficiency equipment, and strict adherence to the Ontario Gas Code. Why Choose Avita HVAC? We offer a unique combination of extensive experience and local, reliable service. We guarantee transparent, up-front pricing and prioritize your family’s safety. We proudly service Toronto (North York, Etobicoke, Scarborough), Vaughan, Richmond Hill, Mississauga, and Markham. Contact us today for safe, expert service and a free quote!

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    InnoGreen Solutions operates as an Ontario-based residential mechanical and building science partner, providing whole-home infrastructure upgrades across the Greater Toronto Area, Golden Horseshoe, Niagara Region, and Cottage Country. Engineered specifically for the demands of the Canadian climate, the firm manages the multi-disciplinary requirements of modern residential properties—spanning high-efficiency climate control, domestic water systems, building envelope optimization, and energy program administration. The company’s technical scope encompasses the installation of cold-climate heat pumps, high-efficiency gas furnaces, central air conditioning, multi-zone ductless mini-splits, tankless water heaters, hybrid heat pump tanks, whole-home water filtration, blown-in attic insulation, and precision air-sealing. Rather than relying on guesswork, InnoGreen Solutions utilizes an assessment-first methodology to evaluate a property's true thermal load, pairing clear, itemized proposals with seamless navigation of energy advisor assessments, provincial rebates, and financing options. TSSA contractor - 313D - 2M Liability Insurance - WSIB - All technicians G or G2 certified. Background Checked.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    PK Heating & Cooling Inc. is a trusted HVAC company serving Toronto and the Greater Toronto Area since 2010. We specialize in the installation, maintenance, and repair of furnaces, air conditioners, boilers, water heaters, tankless systems, and custom ductwork for both residential and commercial clients. Fully licensed and TSSA certified, we are committed to delivering high-quality workmanship and exceptional customer service. Our services come with a 10-year parts and 1-year labor warranty, ensuring peace of mind for our clients. Whether it's a new installation or routine maintenance, we're here to keep your indoor environment comfortable year-round.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    A have worked in construction/renovations for over 10years,Am flexible i can work anywhere in the GTA.Am a hardworking with strong organizational skills. Ready to work with the team and achieve company goal.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    R.M.S HEATING&COOLING. Owner of company, with approximately 40 years of experience, specializes in the installation and systematic setup of heating and cooling systems. We are ready to providing services the fields of ,furnace, hot water tank, tankless hot water, boiler, air handler unit, heat pumps unit, rooftop unit, gas piping, fireplace, commercial unit heater. WE OFFER 1 YEAR LABOUR GARANTEE AND MANUFACTURER PART GARANTEE Due to our experience and in-depth knowledge of equipment procurement, we can compare different brands and offer you the best service at the most reasonable price, tailored to your specific needs. Give us a try—you won’t regret it! Our experience is our winning advantage.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    Installation, maintenance, and repair of HVAC equipment including furnaces, air conditioners, and ventilation systems. Running gas lines and performing leak testing to ensure safety and compliance with codes. Fabrication and installation of ductwork systems to ensure proper airflow and system performance.

    Get in touch
  • Water Heater Repair Specialist in Oshawa

    Hi, I'm Brentt. 👋 Nice to meet you. Hey my name is Brentt. Just here to offer my expertise and second opinions on these specific services -HVAC -A/C repairs and install -Furnace repairs and install -Fireplace repairs

    Get in touch

5

Top rated Water Heater Repair Specialists

Our Water Heater Repair Specialists in Oshawa, are rated 5 out of 5 based on 3 reviews from homeowners like you.

Quality screening

Easily find verified local pros. Just post your job to get quotes from pros near you across Canada.

What services are available for hot water heater repair in Oshawa?

Water heater professionals in Oshawa can help with everything from routine maintenance to full system replacements. In case of a breakdown, we recommend having the contact information for a pro who provides emergency services on hand so you can get in touch right away.

Here are some of the most common services carried out by pros who offer water heater repair in Oshawa:

  • Water heater replacement: Swapping out old or failing units
  • Water heater repairs: Fixing leaks, faulty thermostats, or heating elements
  • Water heater installation: Setting up new tank or tankless water heaters
  • Emergency services: Responding to sudden failures, leaks, or loss of hot water that can't wait for a scheduled appointment

A good pro will be able to recommend which service you need. No matter your water heater needs, it’s easy to find someone who can help in Oshawa. Just post your project on HomeStars now, and available water heater repair pros in your area can reach out!

What are the average costs of water heater repair in Oshawa?

Hot water heater repair costs depend on several factors, including the type of unit, the nature of the problem, and your home's existing plumbing and electrical or gas setup.

Minor fixes such as a thermostat or heating element replacement generally range from $150 to $350, while more involved work such as a gas valve replacement or leak repair can run $300 to $750 or more. In some cases, additional costs such as parts, emergency call-out fees, or follow-on work to connected systems can also add to the overall total.

Typical costs for common water heater repair services in Oshawa:

  • Water heater replacement costs: $1,000 to $3,500, with labour alone typically running $450 to $600 for a standard tank
  • Water heater repairs: minor repairs typically run $150 to $350; more involved work can range from $300 to $750 or more
  • Emergency services: after-hours or same-day call-outs typically add a premium on top of standard repair rates, with call-out fees generally ranging from $50 to $200

If instead you are interested in water heater installation services in Oshawa, you can also check out our guide on water heater installation costs.

HomeStars tip: To ensure you get the most accurate costs for Oshawa, make sure to get everything written down in an itemized quote. This avoids misunderstandings and supports transparency and clear communication for both you and the contractor.

How to get services for water heater repairs in Oshawa with HomeStars

Finding a pro who can help you with your water heater repair needs in Oshawa can be challenging, but it doesn’t have to be. HomeStars allows you to skip the cold-calling and endless searching by connecting you with available contractors in Oshawa who can help with water heater repairs, replacement, and more.

Just follow these simple steps:

  1. Start by posting your project. Provide a clear description of your water heater repair needs and, if possible, include photos to get precise quotes.
  2. Receive offers from available pros, review work history, and read customer feedback for water heater repairs in Oshawa.
  3. Connect with water heater repair pros in Oshawa to discuss your project, request and compare quotes, and ask any questions.
  4. Hire the right pro to get the job done and leave a review based on your experience.

HomeStars tip: Once your project is done, make sure to leave a review. Our review system ensures that pros are rewarded for good work and held accountable for any problems.

Pros on HomeStars undergo checks at registration – such as ID documents, company details, and certifications for regulated jobs and skill assessments – allowing you to hire with confidence.

Extra peace of mind with the HomeStars Confidence Program

The HomeStars Confidence Program is designed to give you added confidence when hiring through our platform. If your job qualifies under the Program and we determine that a claim meets the Program requirements, HomeStars may cover what you owe the Pro on an eligible job with a quote of up to CAD $10,000, in line with our terms and conditions.

FAQ: Common questions about water heater repair services in Oshawa

How do I know if my water heater needs to be repaired or replaced in Oshawa?

As a general rule, if your unit is under 10 years old and the issue is isolated to a single component, a repair is usually the more cost-effective option. If your unit is older, leaking from the tank itself, or has needed multiple repairs in a short period, replacement is likely the better long-term choice for your Oshawa home.

How long does a water heater repair take in Oshawa?

In Oshawa, most standard repairs, such as replacing a thermostat, heating element, or pressure relief valve, can be completed within one to two hours. More involved work, such as a gas valve replacement or leak repair, may take longer depending on the complexity and accessibility of the unit.

Can I use my water heater while it's being repaired in Oshawa?

In most cases, a professional will need to shut off the unit to carry out repairs safely. Your pro will let you know what to expect before work begins, including how long you can expect to be without hot water.

What are the most common signs that a water heater needs repair in Oshawa?

The most common indicators include inconsistent water temperature, discoloured or rust-tinged water, unusual noises such as rumbling or popping, and visible leaks around the unit.

If you notice any of these in your Oshawa home, it's worth having a professional take a look before the issue gets worse. Post your job on HomeStars to connect with local water heater repair pros in Oshawa today.

What warranty coverage should I expect for hot water heater repairs in Oshawa?

Warranty coverage in Oshawa varies depending on the unit, the part being replaced, and the professional carrying out the work. Most manufacturers offer parts warranties ranging from one to several years, while labour warranties are typically provided separately by the pro.

It's worth confirming both before work begins so you know what's covered if an issue comes up again.

Do I need a permit for water heater repairs in Oshawa?

Minor repairs such as replacing a thermostat or heating element generally do not require a permit in Oshawa. However, work involving gas lines, electrical connections, or venting modifications may be subject to local permit requirements. If you're unsure, the professionals on HomeStars are familiar with local code requirements and can advise you on what applies to your specific repair.

Other pros in Oshawa

Cities