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Lazzaro Gas HVAC

HVAC contractor in Whitby, ON.

In Lazzaro Gas HVAC's own words

Lazzaro Gas HVAC is a trusted HVAC contractor serving Whitby, Oshawa, Ajax, Pickering, Bowmanville, Courtice, and the GTA. We provide residential HVAC and commercial HVAC services including furnaces, air conditioning, heaters and generators, gas ranges, fireplaces, tank and tankless water heaters, air filtration and humidification, rooftop HVAC units, and advanced air filtration systems. Our team also offers seasonal maintenance and HVAC retrofits to improve efficiency and performance. With a focus on customer satisfaction, quality workmanship, and reliable service, Lazzaro Gas HVAC keeps homes and businesses comfortable year round.

Trade
HVAC contractor
Business address
6 Michelle Ct, Whitby, ON L1N 6Z1, Canada
Telephone
(289) 356-2920
Website
lazzarogashvac.ca
Hours
  • Monday9:00 am - 7:00 pm
  • Tuesday9:00 am - 7:00 pm
  • Wednesday9:00 am - 6:30 pm
  • Thursday8:30 am - 6:30 pm
  • Friday9:00 am - 5:30 pm
  • Saturday9:00 am - 5:00 pm
  • SundayClosed

From the business's Google listing, checked Oct 2026

Register
ON register

Recorded as supplied and as found in public sources. This register makes no credential or quality claim about any business; check license status with the provincial licensing body.

Google Reviews

5.0 (174)

  • Great and honest service. I would absolutely recommend them. Reliable and dependable. Professional and polite!!

    Paul M.

  • Great guy and fast service. Hired another plumber originally who's price was outrageous more than double. Glad I've found someone trustworthy!

    Jimmy O.

  • Thank goodness for Lazzaro Gas. We were told a gas line may need to be replaced, so we booked 3 companies to check this. Two said the pipe would have to be replaced at a huge cost, and Lazzaro Gas came out, dug further, and cleared everything with our gas company. We are so thankful there are honest companies that don't take advantage of regular people like us. Thank you. Highly recommend.

    diane R.

  • Gabe was very easy to deal with, he understood what we wanted, worked with us on our schedule. When we were ready he was there with short notice and got the work done! Thank you Gabe!

    ReayCottageLiving 1.

  • Great service, very honest and helpful!

    Pancho A.

  • Such a pleasure to deal with! Came 1 day to disconnect the gas line (old gas dryer) and returned later to reconnect the gas line to the new dryer. Gabe went above and beyond what he was hired to do. We truly appreciated his help and expertise. Do not hesitate to contact Lazzaro Gas for your HVAC and gas needs, he will confidently see you through this quickly and professionally.

    Peggy P.

  • I needed a repair for my older natural gas pool heater. The Lazzaro team fit me into their schedule quickly and made the repair with no hassle. They were very transparent on their pricing. Would recommend.

    Troy W.

  • Gabe did an amazing job, on our pool, when we had an emergency repair. He came the same day and we highly recommend his services.

    Shannon S.

  • Great job, great price. Thanks Gabe!

    Mich W.

  • Lazarro was a huge help with our pool heater! He came out as quickly as possible and had it fixed in less than an hour. He even took the time to look over our whole setup and gave us some great tips for keeping everything running smoothly.

    Joshua M.

  • Called Lazzaro Gas to adapt my barbecue line from half inch to three eighths for a new grill. Dave answered my text almost immediately, was clear about the work and honest about the price, and gave me an exact arrival time rather than a vague window. The tech was efficient, respectful, and in and out. Excellent service all around.

    David B.

  • Contacted Gabe as I was having a with my hot water tank. Within 4hrs Lou was at my door and fixed the issue/problem and conducted himself very professionally. I would contact Gabe again, and highly recommend him.

    Mark B.

  • Have used this service for a few years now for both my AC and Heat when something goes wrong, and always is dependable and gives great service(and advice as well!). Worth the money. EDIT/UPDATE 8/7/26 Because google reviews doesn't allow multiple reviews: As mentioned before used their services before. Now my water heater 'died' and I had no hot water. So I gave them a call near the END of their working hours, and they still helped me out, and walked me through some trouble shooting as well. Got my hot water restored, and everything is great. I can't recommend Lazzaro Gas HVAC enough. Give them a call. They'll help you out. 5 Star business.

    Andrew C.

  • After Enbridge shut off our gas due to a leak, we needed someone to fix the problem quickly. Gabe and his team responded promptly, identified the source of the leak, and completed the repair professionally and efficiently. They explained everything clearly, worked safely, and made sure the issue was fully resolved so we could get our gas service restored. Their workmanship and professionalism made a stressful situation much easier. I would definitely recommend them to anyone needing repairs or emergency service.

    Elise L.

  • Highly recommended HVAC contractor. Gabe has replaced my furnace and just recently my AC. Jobs very well done. By mistake, I transferred overpayment and he immediately let me know of my mistake. A very honest person running his business with integrity.

    Arlington S.

  • Very helpful and informational on getting the process started for gas meter hook up

    ty H.

  • A/C broke down and Gabe came by on a Sunday to fix the problem. He was knowledgeable and took the time to explain the issue and options for resolution. I would certainly reach out again for any future HVAC needs!

    Pax

  • We cannot thank you enough. We had a fairly poor experience with another company. Lazzaro Gas was awesome. They responded punctually, explained our pool heater issues thoroughly. Attentive and great attention to detail. Would highly recommend!

    Shiona R.

  • Gabe came by and moved a gas line for me. Professional job all around

    Brian H.

  • Got great and quick service to set up my new gas drier. The guys cleaned up and also fixed the venting!

    Margaret B.

  • Excellent experience from start to finish. Gabe was professional, friendly, and completed the installation in less than 24 hours from my call. Our older home required some piping modifications, which Gabe handled seamlessly. The water heater itself is clearly higher quality than what you’d find at big box stores. Highly recommend.

    Laura T.

  • Gabe installed my AC and furnace and did an excellent job. He was professional, knowledgeable, and made sure everything was done right. The system runs great and the whole process was smooth. Highly recommend Gabe for any HVAC work.

    sharan B.

  • Very fast and efficient service.

    Guylaine E.

  • Gabe Lazzaro and his crew at Lazzaro Gas are fantastic. He knows his stuff and he doesn't try to up-sell you on equipment you don't need. Trustworthy, honest and great workmanship is what you get from him. He and his crew work fast and efficiently. Excellent experience. Highly recommend them. Thanks again Gabe. Job well done.

    Peter C.

  • Reliance shut off our gas and during a yearly “furnace protection plan” visit and said we need a new furnace. Their quote was high and came with the usual predatory practices and high pressure sales tactics. I got Lazzaro gas’ information from a family member and had Gabriel come and test the furnace. He explained everything clearly and where the Reliance techs were correct and were incorrect. We went with the new install with Gabe and are very happy. Furnace works great and most importantly we feel like we have an HVAC contractor we can trust and depend upon. I will continue to use him and recommend him to anyone who asks.

    Blag A.

  • We had a gas leak and Enbridge shut off our main valve late yesterday evening. It was pretty stressful, but Gabe and team came through for us right away. They arrived today, quickly found the issue, and fixed everything efficiently. The team is professional, knowledgeable, and very reassuring throughout. They also installed our new water heater last fall, and we had a great experience then too. Definitely a company we trust and would recommend!

    Abhaya P.

  • Gabe and the crew replaced our broken 20‑year‑old furnace and made the whole process easy and stress‑free. They were friendly, professional, and clearly knew their stuff. We were back to a warm, comfortable home in no time—highly recommend!

    Rene B.

  • Excellent work, very kind and professional would highly recommend to anyone looking for a reliable HVAC technician!!!! - LaMarca Team

    La I.

About Lazzaro Gas HVAC

Air conditioning and gas work in Whitby

Lazzaro Gas HVAC names air conditioning among its core work in Whitby. The company also describes residential and commercial HVAC work, including installation, repair, seasonal maintenance, heat pumps, indoor air quality systems, and commercial HVAC equipment.

Its broader service range includes furnaces, heaters, generators, gas ranges, fireplaces, water heaters, rooftop units, filtration, humidification, and HVAC retrofits. The company says annual maintenance is required to keep manufacturer parts warranties valid.

Equipment warranties and maintenance terms

For Keeprite and Navien installations, Lazzaro Gas HVAC says it includes a two-year labour warranty. It also describes a one-year labour warranty for other equipment and says it registers equipment for a 10-year parts warranty.

Whitby’s 1981-2010 Environment Canada normals show a mean temperature of 8.1 degrees Celsius, with an average high of 12.1 degrees Celsius and average low of 4.1 degrees Celsius. Those figures provide the local temperature baseline alongside the company’s furnace, heat pump, air-conditioning, and maintenance work.

Rating, reviews, and business hours

Lazzaro Gas HVAC has a 5.0 rating based on 174 reviews. Reviewers most often mention fast scheduling, clear pricing, professional conduct, gas-line work, pool-heater repairs, and help with water-heater issues.

Hours run from an earliest opening of 8:30 am to a latest closing of 7:00 pm Monday through Saturday, with Sunday closed. Reviewers also describe work completed on short notice and communication around appointment timing.

Services, brands and warranty details come from the company's own website. Ratings, hours and reviews come from Google. Town figures come from Statistics Canada and Environment Canada.

More HVAC contractors in Whitby

About Whitby

Population138,501 (2021)
Average yearly snowfall41.6 inches

Sources: Statistics Canada, 2021 Census. Environment and Climate Change Canada, Canadian Climate Normals 1981-2010.