Reliable Comfort for Your Home

Premium Carrier Air Conditioners

Certified, Warrantied & 5-Star Rated

Stay cool with a reliable, energy-efficient Carrier Air Conditioner. Enjoy premium comfort, backed by our 5-star installation and up to 10-year warranties.

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Our Service Area
GTA & Southern Ontario Installation: Full-service local installation in Toronto, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Aurora, Newmarket, Oakville, Burlington, Milton, Oshawa, Whitby, Ajax, and Pickering
Canada-Wide Shipping: We securely ship genuine Carrier AC units and heat pumps to any province or territory across Canada
Reliable, everyday cooling with legendary Carrier durability.

Carrier Comfort™ Series

  • High-Efficiency Cooling: Up to 16 SEER2 ratings to keep your summer utility bills low.

  • Whisper-Quiet Performance: Sound-dampening shell ensures smooth, quiet operation.

  • Eco-Friendly Refrigerant: Uses next-generation Puron Advance™ for a smaller carbon footprint.

  • 10-Year Parts Warranty: Complete peace of mind with long-term manufacturer coverage.

The Carrier Comfort™ Series is Carrier’s entry-level line, designed to provide reliable, everyday cooling and legendary durability at an affordable price point. It features high-efficiency cooling (up to 16 SEER2) to keep summer electricity bills low and a specialized sound-dampening shell for whisper-quiet performance. When installed by 4Most Energy, it comes backed by a 10-year manufacturer parts warranty plus our expert installation coverage.

The HVAC industry is transitioning to next-generation, eco-friendly refrigerants to meet new environmental regulations. Older models use R-410A, while new models use Puron Advance™ (R-454B), which reduces global warming potential by roughly 78%. Because R-454B has a different safety classification (A2L), these systems require advanced factory-installed mitigation controls, such as automatic leak detection sensors and dissipation boards. Due to these additional safety components and advanced engineering, the equipment price for the new R-454B models is higher than older R-410A units. However, they offer better future-proofing, higher efficiency, and a much smaller carbon footprint.

In most cases, yes! You can typically keep your existing furnace, but you will need to replace your indoor evaporator coil (the part sitting right above your furnace). Because next-generation R-454B systems operate with new safety requirements, they cannot use older R-410A coils. 4Most Energy installs specialized mitigation controls to seamlessly connect your new AC components to your existing furnace blower. However, since older blowers can sometimes impact your new AC's maximum efficiency, it's highly recommended to have our team evaluate your current setup.

Higher efficiency, whisper-quiet durability, and advanced humidity control.

Carrier Performance™ Series

  • Higher Efficiency Cooling: Up to 17 SEER2 ratings for maximum summer electricity savings.

  • Next-Generation Gas: Uses advanced, eco-friendly Puron Advance™ refrigerant to meet the newest environmental standards.

  • Premium Durability: Heavy-gauge galvanized steel cabinet protects against Ontario’s harshest weather.

  • Ultra-Quiet Comfort: Specialized sound blankets drastically reduce operational noise.

  • Unbeatable Protection: Complete peace of mind with a 10-year manufacturer parts warranty and lifetime compressor coverage.

The Carrier Performance™ Series is designed to step up your home's comfort with higher efficiency and advanced humidity control. Reaching up to 17 SEER2, it delivers maximum summer electricity savings compared to entry-level models. It operates on the new, eco-friendly Puron Advance™ (R-454B) refrigerant and features specialized sound blankets that drastically reduce operational noise for ultra-quiet cooling throughout your home. 1 2

Absolutely. While all Carrier units are built tough, the Performance Series steps up the durability with a stronger, heavy-gauge galvanized steel cabinet that offers enhanced corrosion resistance. At 4Most Energy, we highly recommend this rugged exterior because it is specifically engineered to better protect the internal components against Southern Ontario’s extreme weather fluctuations, ensuring reliable, rust-free operation year after year.

This series offers unbeatable protection for your investment. When installed by the fully certified and insured professionals at 4Most Energy, your new Performance Series AC includes a standard 10-year manufacturer parts warranty AND an exclusive lifetime compressor coverage (upon registration). This is backed by our expert base installation labour warranty, giving you ultimate, long-term peace of mind.

Complete year-round comfort with high-efficiency cooling and cold-climate heating.

Carrier Crossover Heat Pump

  • Up to $2,000 in Rebates: Government-qualified system that puts money directly back into your pocket.

  • 10-Year Peace of Mind Warranty: Outstanding long-term security covering parts for a full decade.

  • Massive Utility Savings: High-efficiency engineering to dramatically lower your monthly energy bills year-round.

  • Super Ultra-Quiet: Advanced noise-reduction technology ensures whisper-soft operation inside and out.

  • Premium Extras Included: Comes complete with an Ecobee Smart Thermostat and a heavy-duty outdoor snow stand.

  • Decent & Reliable Technology: Built by the world's leading HVAC brand for ultimate long-term reliability and high quality.

The Carrier Crossover Heat Pump is a high-efficiency system engineered to provide both ultra-quiet summer cooling and cold-climate winter heating. Because it is highly energy-efficient, it drastically lowers your monthly utility bills year-round. Plus, it is a government-qualified system, making you eligible for up to $2,000 in rebates that put money directly back into your pocket

Yes — in many homes, replacing an old AC with a heat pump is one of the smartest upgrades you can make. You still get high-efficiency cooling in summer, but you also gain an efficient heating source for spring, fall, and much of the winter. In a crossover system, the heat pump can work with your existing or new furnace, giving you the benefit of electric heating during milder conditions and gas backup only when needed. That means better year-round value from the equipment you’re installing, instead of replacing your AC with another cooling-only system.

Yes. The Carrier 38MURA high-heat system is designed for cold-weather performance and can operate in heating mode down to -30°C. That makes it a strong option for homeowners in Toronto, the GTA, and across Ontario who want a cold-climate heat pump that can handle real winter conditions while reducing reliance on traditional heating sources.

Yes. One of the biggest advantages of this crossover system is that it can often be paired with an existing properly sized gas furnace to create a dual-fuel hybrid heating system. In this setup, the heat pump handles efficient daily heating and cooling, while the furnace supports the home during extreme cold, high-demand recovery, or when gas becomes the better heating source.

If your home is currently heated by natural gas (Enbridge), you are eligible to receive a rebate of $500 per ton for a qualifying cold-climate air source heat pump, up to a maximum of $2,000. Here is how the savings break down based on the size of the system required for your home:

  • 2-Ton Heat Pump: $1,000 Rebate

  • 2.5-Ton Heat Pump: $1,250 Rebate

  • 3-Ton Heat Pump: $1,500 Rebate

  • 4-Ton & 5-Ton Heat Pumps: $2,000 Rebate (Maximum Cap)

(Note: Homes heated by electricity, oil, or propane are eligible for even higher tiers, up to $7,500!

Peace Of Mind Warranty & Protection

Unbeatable Carrier Protection

Your investment is safe with us. Every Carrier system installed by 4Most Energy comes with industry-leading protection so you can stay cool with total peace of mind:

UP TO 10 YEAR

Labour Warranty available

10 YEAR

Manufacturer Parts Warranty (upon registration)

1-Year

Base Installation Labour Warranty included standard

Why Install the Carrier with 4Most Energy?

15+ Years of Expertise

Factory-trained Carrier technicians with over 15 years of experience and full expertise in the 59TP6 two-stage system.

Premium Installation Materials

High-quality materials for safe, efficient performance in Ontario’s harsh winters

Comprehensive After-Sales Support

From InteliSense™ remote diagnostics to genuine Carrier parts, we keep your home heated during cold

Guaranteed Satisfaction

Backed by a 100% customer satisfaction warranty and a 30-day return policy

Transparent Pricing

No hidden fees or surprise charges—just clear, upfront pricing

Fully Certified & Insured

TSSA-certified and fully insured technicians for your peace of mind

Carrier Parts Availability

We stock essential Carrier parts to ensure rapid repair and maintenance..

Need AC Repairs?

Our Repair Services

Is your air conditioner giving you trouble? Our certified technicians are here to help. You can count on us for quick and effective repairs. Whether you’re facing an urgent issue or need routine maintenance, we’ve got you covered 24/7. Schedule your appointment today!

Frequently Asked Questions

4Most Energy provides full-service, professional local installation across the Greater Toronto Area (GTA) and Southern Ontario, including Toronto, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Aurora, Newmarket, Oakville, Burlington, Milton, Oshawa, Whitby, Ajax, and Pickering.

Not in Ontario? We also offer Canada-wide shipping, securely delivering genuine Carrier AC units and heat pumps to homeowners in any province or territory across the country.

 A standard AC installation typically ranges from $600 to $1,200, with the higher end reserved for more difficult scenarios, complex routing, or required modifications to your existing ductwork.

To get a fast and accurate rough estimate, the best method is to contact our team and send over a few quick pictures of your existing setup. If needed, 4Most Energy also offers a completely free, no-obligation on-site visit to evaluate your home and provide you with a 100% accurate quote, the best equipment options, and the most competitive pricing.

Your investment is backed by industry-leading protection. Every standard installation automatically includes a 10-year manufacturer parts warranty (upon registration) and our 1-year base installation labour warranty. For ultimate long-term security, premium systems feature an exclusive lifetime compressor coverage, and extended labor warranties up to 10 years are available.

We have a specialized, dedicated service department exclusively built to handle maintenance and repairs 24/7. If you experience an urgent issue or system breakdown, we guarantee an emergency response time of less than 12 hours. For all non-urgent service requests, we guarantee a response in less than 24 hours. Because we are a fully certified, local TSSA contractor, our factory-trained technicians use authentic Carrier replacement parts to fix issues fast and efficiently.

 To protect your 10-year warranty and keep your system running efficiently, we recommend changing your indoor air filters regularly (every 1 to 3 months) and scheduling professional annual maintenance. 4Most Energy offers priority maintenance scheduling with the earliest available appointments. Be sure to ask our advisors about our customizable maintenance plans to keep your system performing at peak condition year-round.

We accept bank transfers and credit card payments, and we provide highly flexible options to make home comfort affordable for any budget:

  • 0% Interest Financing: Available for up to 3 months on most equipment. During special promotional periods, we also offer extended 0% interest terms for 6, 12, or 18 months on select products.

  • Long-Term Financing: We offer low-payment plans stretching up to 180 months featuring highly competitive interest rates—typically lower than what standard banks or personal lines of credit can offer.

  • Rental Programs: For complete hassle-free ownership, we offer competitive rental plans that come with full protection and ongoing service included.

We do both! While local GTA and Southern Ontario homeowners highly benefit from our full turn-key professional installation, we also cater to DIYers and out-of-province clients by offering equipment-only purchases with secure shipping directly to your doorstep anywhere in Canada.

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  • 4.9 Excellent rating Last 12 months
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  • Responds to customer reviews 74% response rate within 48 hours
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Mahvash Madani profile picture
Mahvash Madani
2 days ago
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I had a great experience with 4Most Energy. They provided all the i formation I needed and clearly explained the different options available which made it easy to make an informed decision. Their pricing was reasonable and competitive, and I really appreciate their responsiveness and flexibility in accommodating my needs. The installation team was professional, efficient, and did a great job.Overall, the entire process was smooth and stress-free. I am very happy with the service and would highly recommend them for anyone looking for reliable HVAC services.
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H Lau profile picture
H Lau
11 days ago
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Harini profile picture
Harini
17 days ago
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+0
We had a great experience with Rey and his team during our new Rinnai boiler installation. The technicians did an amazing job and worked efficiently. The technician Sam was knowledgeable, professional, and respectful throughout the installation. He took the time to answer all my questions and made sure everything was properly checked before finishing the job. They arrived on time and completed the boiler installation on schedule. We are very happy with the service and would definitely recommend them to anyone looking for reliable and professional HVAC service. Thanks.
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Vip C. profile picture
Vip C.
17 days ago
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+0
Excellent service and very reasonable pricing for a new AC installation. The team arrived right on time, provided a smooth and professional installation, and there were absolutely no hidden costs. Communication was transparent, proactive, and consistent throughout the entire process. Highly recommend them to anyone looking for reliable and honest HVAC service.
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kevin liu
20 days ago
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Brian Johnston profile picture
Brian Johnston
22 days ago
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+1
I was very pleased with the competitive pricing I got specifically from 4most energy. I contacted many companies to get their best quote. Sometimes there are even daughter or sister companies that will give you better quotes than the parent companies. It's best to check around for the identical product with installation from many companies. I was also pleased with the installers. They did have to cut away some insulation to install the Rinnai RX199 on the outside wall the house. Not sure if they should have tried replacing that insulation afterwards, but won't complain about the job they did because I think I got the best price on the market after getting quotes from about a dozen companies.
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Joseph Spitale profile picture
Joseph Spitale
37 days ago
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We recently had a Navien Combi boiler installed by 4Most Energy and had a great experience from start to finish. Rey was our sales representative and Sam was our technician, and both were excellent to work with. They arrived on time, the installation was fast and efficient, and everyone was friendly and professional throughout the process. Sam did a great job with the installation, and everything is working perfectly. We’re also very happy with the Navien Combi boiler itself. Overall, we couldn’t be happier with the service, the installation, and the product. We would definitely recommend 4Most Energy.
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Da big_Guy profile picture
Da big_Guy
38 days ago
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Rey, Ben and Amad thank you very much for the amazing work on my hot water tank purchase and installation. You a have a loyal customer fir life. I will make sure my family and friends use your service. Zoran.
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Marvin Harrison profile picture
Marvin Harrison
40 days ago
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+2
I contacted 4Most Energy to replace my 14 year old AC unit. Their intake process was smooth. They provided a reasonable quote the same day. The installation of the new AC unit was scheduled and the service provided by Farzad and his associate was completed within a reasonable time. They did a great job on the installation, hauled away the old equipment, and left the job site (both indoors and outdoors) in good condition. I would not hesitate to recommend 4Most Energy for your heating and cooling needs.
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Rodney BROWN profile picture
Rodney BROWN
40 days ago
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Scheduling was quick and easy. The team showed up on time, were quick and efficient and did an overall good job!
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Jag Jasani profile picture
Jag Jasani
41 days ago
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+0
Great job Rey, Sam and team! My tankless water heater was broken for two months and after getting the run around from Enercare and Reliance, I decided on purchasing a Navien from 4Most Energy and they did a great job explaining the process and installing it the next day. Thank you for the top notch service!
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Maryam Badakhshi profile picture
Maryam Badakhshi
48 days ago
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Hamid installed a new heater for us. We had a great experience. He and the team were professional and the work was done in a day. We really appreciate their promptness. We’d definitely recommend Hamid.
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Chris Luc profile picture
Chris Luc
51 days ago
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Great job by Hamid. Thanks
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Adrian Cann profile picture
Adrian Cann
53 days ago
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Great service, great price, great technicians, big job but the work was executed with perfection!!!
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Charles Hawkes profile picture
Charles Hawkes
57 days ago
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Arrived promptly, installed new water heater in a professional manner, checked the installation for any gas or water leaks, cleaned up the work site. Very satisfied with the service and pricing. Strongly recommend 4MostEnergy.